Decouplers

[charmansmith (Harry Mann)]

<Any one with enough time and engineering knowledge could easily
produce the missing parts to create thier own decoupler. >

Sorry, but absolutely not true... have you looked at the original
drawings????

The complex machining (including grinding operations) interspersed
with heat treatments of a couple of parts is not something many
engineering shops could tackle, let alone an individual.

Easily, definitely not, it took an Austrian group living near the
Graz SDP factory over a year to get all the parts made for a batch of
three, that's with the original drawings and German speakers who each
took on a particular task; fortunately one of them worked in company
that had made similar complex parts previously.

That's why the real things are so expensive and that's presumably why
Tom Lengyal's design takes a roundabout route using an exisiting part
(broached sleeve) which is then modified.

Regards

Clive

[syncroaussie (Steve)]

--- In Syncro_T3_Australia@yahoogroups.com, "Harry Mann" <clive.harman-
smith@n...> wrote:

> Sorry, but absolutely not true... have you looked at the original
> drawings????

Hello,

No, not the drawings. I've inspected the internals of the output housing.

<Any one with enough time and engineering knowledge could easily

> produce the missing parts to create thier own decoupler. >
>

Please note, "enough time and engineering knowledge" If one had the correct
knowledge and the time it could be done with comparative 'ease' !!!!!

Unfortunately, I suspect that the majority of people with the requisite knowledge,
time and money to sink into such a project, could think of a million other things to do
.


Steve

[evm614]

I know that a group order was placed some time ago to purchase
decouplers from Berndt Jaegar in Germany. I decided to withdraw from
that group purchase due to the fact that there was some conjecture
regarding non-diff lock ex Telstra models as there were no vacume
lines for the decoupler to work with.Nor were there any on-dash knobs
to activate the diff locks and hence the decoupler.

It was therefore the belief that this would make the installation of
the decoupler impossible or ineffective and a waste of time and money.
I have since heard some news that this might not be necessarily so.
Has anyone out there fitted a decoupler to a non locking
syncro and is it successfull and all that you desire.

Has the problem been resolved and what measures were initiated to
overcome and bypass the percieved problem. If these problems have
been nutted out I'm interested to know are there any decouplers out
there to be sold.?
Regards
Michael.

[syncroaustralia]

Michael,

The function of the decoupler is independent of the diff lock. The
kits we got from Bernd Jaeger in Germany came with everything,
including the dash switch - which is actually a vacuum valve - and
the vacuum reservoir that actuates the engage/disengage. To install
this kit on a Syncro without an existing diff lock differs in only
one aspect - you have to run a vacuum pickup from the induction
manifold to the supplied vacuum reservoir. The switch (vacuum
valve) can be mounted anywhere on the dash that is convenient or you
could buy the little sub-panel and fit it in the original place.

Les

--- In Syncro_T3_Australia@yahoogroups.com, "evm614" <mrphoto@i...>
wrote:

> I know that a group order was placed some time ago to purchase
> decouplers from Berndt Jaegar in Germany. I decided to withdraw

from

> that group purchase due to the fact that there was some conjecture
> regarding non-diff lock ex Telstra models as there were no vacume
> lines for the decoupler to work with.Nor were there any on-dash

knobs

> to activate the diff locks and hence the decoupler.
>
> It was therefore the belief that this would make the installation

of

> the decoupler impossible or ineffective and a waste of time and

money.

> I have since heard some news that this might not be necessarily so.
> Has anyone out there fitted a decoupler to a non locking
> syncro and is it successfull and all that you desire.
>
> Has the problem been resolved and what measures were initiated to
> overcome and bypass the percieved problem. If these problems have
> been nutted out I'm interested to know are there any decouplers out
> there to be sold.?
> Regards
> Michael.

[nickbellau]

Yes I installed a decoupler on my ex Telecom syncro and I thoroughly recommend it. Mine was made in USA and came complete with knob and vacuum lines (Genuine VW) and a vacuum reservoir made out of pvc pipe with brass fittings. Looks industrial but works well. Knob mounted on dash. Uses existing wiring loom to activate light.

 

 

Nick.


*******************************************
Nicholas Bellgrove
Lecturer - Photography
TAFE SA
Croydon Campus
Goodall Avenue
Croydon Park SA 5008
Australia
Ph +61 8 8204 0993
Fx +61 8 8345 4534
*******************************************

>>>mrphoto@iprimus.com.au 06/03/05 12:23 pm >>>

I know that a group order was placed some time ago to purchase
decouplers from Berndt Jaegar in Germany. I decided to withdraw from
that group purchase due to the fact that there was some conjecture
regarding non-diff lock ex Telstra models as there were no vacume
lines for the decoupler to work with.Nor were there any on-dash knobs
to activate the diff locks and hence the decoupler.

It was therefore the belief that this would make the installation of
the decoupler impossible or ineffective and a waste of time and money.
I have since heard some news that this might not be necessarily so.
Has anyone out there fitted a decoupler to a non locking
syncro and is it successfull and all that you desire.

Has the problem been resolved and what measures were initiated to
overcome and bypass the  percieved problem. If these problems have
been nutted out I'm interested to know are there any decouplers out
there to be sold.?
Regards
Michael.

[system]

Nick,

How much did your decoupler cost? And what were the difficulties & time factors involved? What was the name of the company that you purchased them from and were there any problems in installation? You mentioned that the existing wiring loom is used – where arte these wires located and how did you know they were meant for the decoupler originally?

Your answers and advice for all of the stupid questions above would be much appreciated.

 

Regards,

 

Scott

Terrigal NSW

 

---

From: Syncro_T3_Australia@yahoogroups.com [mailto: Syncro_T3_Australia@yahoogroups.com ] On Behalf Of Nick Bellgrove
Sent: Monday, 6 June 2005 11:00 AM
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: [Syncro_T3_Australia] Decouplers

 

Yes I installed a decoupler on my ex Telecom syncro and I thoroughly recommend it. Mine was made in USA and came complete with knob and vacuum lines (Genuine VW) and a vacuum reservoir made out of pvc pipe with brass fittings. Looks industrial but works well. Knob mounted on dash. Uses existing wiring loom to activate light.

 

 

Nick.


*******************************************
Nicholas Bellgrove
Lecturer - Photography
TAFE SA
Croydon Campus
Goodall Avenue
Croydon Park SA 5008
Australia
Ph +61 8 8204 0993
Fx +61 8 8345 4534
*******************************************

>>>mrphoto@iprimus.com.au 06/03/05 12:23 pm >>>

I know that a group order was placed some time ago to purchase
decouplers from Berndt Jaegar in Germany . I decided to withdraw from
that group purchase due to the fact that there was some conjecture
regarding non-diff lock ex Telstra models as there were no vacume
lines for the decoupler to work with.Nor were there any on-dash knobs
to activate the diff locks and hence the decoupler.

It was therefore the belief that this would make the installation of
the decoupler impossible or ineffective and a waste of time and money.
I have since heard some news that this might not be necessarily so.
Has anyone out there fitted a decoupler to a non locking
syncro and is it successfull and all that you desire.

Has the problem been resolved and what measures were initiated to
overcome and bypass the  percieved problem. If these problems have
been nutted out I'm interested to know are there any decouplers out
there to be sold.?
Regards
Michael.

 

[nickbellau]

Installed it over 18 months ago, not cheap, but there was an arrangement to exchange nose cone and get back a deposit, US $995-00 + US $250  if keeping nose cone. Manufactured by guy call Tom Legnel (something like that) email name Talmal... (sorry couldnt find address. Look up / ask on US syncro site on Yahoo groups. Not sure if he still makes them. Very good unit. No problems, first class machining and components. Different in manufacture to some units as does not have a needle bearing  where two shafts meet, as in some units,  but not a major concern to me as minimal movement in difference between shaft speeds. Still cannot be towed with front wheels fixed.Easy to install, no machining, 3 to 4 hour job from memory, quite straght forward. Good person to deal with, took about 2-3 weeks to arrive after payment. Had non genuine vacuum reservoir but works well. Came with detailed instructions on how to wire up light using existing decoupler loom. All syncros have this loom tucked away above nose cone and finishing in dash. Could have installed separate light next to switch but liked the idea of seeing something in the instrument cluster so I installed an additional LED in the spare spot under the turn indicators/highbeam/temp LED'S. Looks great. I may still have instructions if needed. Very comprehensive.

 

Nick.


*******************************************
Nicholas Bellgrove
Lecturer - Photography
TAFE SA
Croydon Campus
Goodall Avenue
Croydon Park SA 5008
Australia
Ph +61 8 8204 0993
Fx +61 8 8345 4534
*******************************************

>>>spitcher@boydens.com.au 06/06/05 3:18 pm >>>

Nick,

How much did your decoupler cost? And what were the difficulties & time factors involved? What was the name of the company that you purchased them from and were there any problems in installation? You mentioned that the existing wiring loom is used – where arte these wires located and how did you know they were meant for the decoupler originally?

Your answers and advice for all of the stupid questions above would be much appreciated.

 

Regards,

 

Scott

Terrigal NSW

 

---

From: Syncro_T3_Australia@yahoogroups.com  [mailto: Syncro_T3_Australia@yahoogroups.com ] On Behalf Of Nick Bellgrove
Sent: Monday, 6 June 2005 11:00 AM
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: [Syncro_T3_Australia] Decouplers

 

Yes I installed a decoupler on my ex Telecom syncro and I thoroughly recommend it. Mine was made in USA  and came complete with knob and vacuum lines (Genuine VW) and a vacuum reservoir made out of pvc pipe with brass fittings. Looks industrial but works well. Knob mounted on dash. Uses existing wiring loom to activate light.

 

 

Nick.


*******************************************
Nicholas Bellgrove
Lecturer - Photography
TAFE SA
Croydon Campus
Goodall Avenue
Croydon Park SA 5008
Australia
Ph +61 8 8204 0993
Fx +61 8 8345 4534
*******************************************

>>>mrphoto@iprimus.com.au 06/03/05 12:23 pm >>>

I know that a group order was placed some time ago to purchase
decouplers from Berndt Jaegar in Germany . I decided to withdraw from
that group purchase due to the fact that there was some conjecture
regarding non-diff lock ex Telstra models as there were no vacume
lines for the decoupler to work with.Nor were there any on-dash knobs
to activate the diff locks and hence the decoupler.

It was therefore the belief that this would make the installation of
the decoupler impossible or ineffective and a waste of time and money.
I have since heard some news that this might not be necessarily so.
Has anyone out there fitted a decoupler to a non locking
syncro and is it successfull and all that you desire.

Has the problem been resolved and what measures were initiated to
overcome and bypass the  percieved problem. If these problems have
been nutted out I'm interested to know are there any decouplers out
there to be sold.?
Regards
Michael.

 

[larchase (Larry Chase)]

Nick,

Did you get the contact info for Tom Legnel?

If not I'll dig it up for you.

larry chase
roadhaus.com
- - -

On Mon Jun 6 2:18 , 'Nick Bellgrove' <nick.bellgrove@dmit.sa.edu.au> sent:

> Installed it over 18 months ago, not cheap, but there was an arrangement to exchange nose

cone and get back a deposit, US $995-00 + US $250 if keeping nose cone. Manufactured by guy call Tom
Legnel (something like that) email name Talmal... (sorry couldnt find address. Look up / ask on US
syncro site on Yahoo groups. Not sure if he still makes them. Very good unit. No problems, first class
machining and components. Different in manufacture to some units as does not have a needle
bearing where two shafts meet, as in some units, but not a major concern to me as minimal movement
in difference between shaft speeds. Still cannot be towed with front wheels fixed.Easy to install, no
machining, 3 to 4 hour job from memory, quite straght forward. Good person to deal with, took about 2-
3 weeks to arrive after payment. Had non genuine vacuum reservoir but works well. Came with detailed
instructions on how to wire up light using existing decoupler loom. All syncros have this loom tucked
away above nose cone and finishing in dash. Could have installed separate light next to switch but
liked the idea of seeing something in the instrument cluster so I installed an additional LED in the
spare spot under the turn indicators/highbeam/temp LED'S. Looks great. I may still have instructions
if needed. Very comprehensive.

[system]

Nick,

Thanks for the info. Is the decoupler actually a decoupler if it does not allow the car to be towed with the front wheels fixed? Seems to imply that there is still some connection to the centre driveshaft with the unit in the decoupled mode. If using it regularly do your front tyres still wear on the outside edge at all?

Further info would be greatly appreciated.

Regards,

Scott

 

---

From: Syncro_T3_Australia@yahoogroups.com [mailto: Syncro_T3_Australia@yahoogroups.com ] On Behalf Of Nick Bellgrove
Sent: Monday, 6 June 2005 5:19 PM
To: Syncro_T3_Australia@yahoogroups.com
Subject: RE: [Syncro_T3_Australia] Decouplers

 

Installed it over 18 months ago, not cheap, but there was an arrangement to exchange nose cone and get back a deposit, US $995-00 + US $250  if keeping nose cone. Manufactured by guy call Tom Legnel (something like that) email name Talmal... (sorry couldnt find address. Look up / ask on US syncro site on Yahoo groups. Not sure if he still makes them. Very good unit. No problems, first class machining and components. Different in manufacture to some units as does not have a needle bearing  where two shafts meet, as in some units,  but not a major concern to me as minimal movement in difference between shaft speeds. Still cannot be towed with front wheels fixed.Easy to install, no machining, 3 to 4 hour job from memory, quite straght forward. Good person to deal with, took about 2-3 weeks to arrive after payment. Had non genuine vacuum reservoir but works well. Came with detailed instructions on how to wire up light using existing decoupler loom. All syncros have this loom tucked away above nose cone and finishing in dash. Could have installed separate light next to switch but liked the idea of seeing something in the instrument cluster so I installed an additional LED in the spare spot under the turn indicators/highbeam/temp LED'S. Looks great. I may still have instructions if needed. Very comprehensive.

 

Nick.


*******************************************
Nicholas Bellgrove
Lecturer - Photography
TAFE SA
Croydon Campus
Goodall Avenue
Croydon Park SA 5008
Australia
Ph +61 8 8204 0993
Fx +61 8 8345 4534
*******************************************

>>>spitcher@boydens.com.au 06/06/05 3:18 pm >>>

Nick,

How much did your decoupler cost? And what were the difficulties & time factors involved? What was the name of the company that you purchased them from and were there any problems in installation? You mentioned that the existing wiring loom is used – where arte these wires located and how did you know they were meant for the decoupler originally?

Your answers and advice for all of the stupid questions above would be much appreciated.

 

Regards,

 

Scott

Terrigal NSW

 

---

From: Syncro_T3_Australia@yahoogroups.com [mailto: Syncro_T3_Australia@yahoogroups.com ] On Behalf Of Nick Bellgrove
Sent: Monday, 6 June 2005 11:00 AM
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: [Syncro_T3_Australia] Decouplers

 

Yes I installed a decoupler on my ex Telecom syncro and I thoroughly recommend it. Mine was made in USA  and came complete with knob and vacuum lines (Genuine VW) and a vacuum reservoir made out of pvc pipe with brass fittings. Looks industrial but works well. Knob mounted on dash. Uses existing wiring loom to activate light.

 

 

Nick.


*******************************************
Nicholas Bellgrove
Lecturer - Photography
TAFE SA
Croydon Campus
Goodall Avenue
Croydon Park SA 5008
Australia
Ph +61 8 8204 0993
Fx +61 8 8345 4534
*******************************************

>>>mrphoto@iprimus.com.au 06/03/05 12:23 pm >>>

I know that a group order was placed some time ago to purchase
decouplers from Berndt Jaegar in Germany . I decided to withdraw from
that group purchase due to the fact that there was some conjecture
regarding non-diff lock ex Telstra models as there were no vacume
lines for the decoupler to work with.Nor were there any on-dash knobs
to activate the diff locks and hence the decoupler.

It was therefore the belief that this would make the installation of
the decoupler impossible or ineffective and a waste of time and money.
I have since heard some news that this might not be necessarily so.
Has anyone out there fitted a decoupler to a non locking
syncro and is it successfull and all that you desire.

Has the problem been resolved and what measures were initiated to
overcome and bypass the  percieved problem. If these problems have
been nutted out I'm interested to know are there any decouplers out
there to be sold.?
Regards
Michael.

 

 

[system]

Larry,

If Nick doesn't want it I certainly am interested. Please just post it on this forum.

Thanking you in advance.

Regards,
Scott

-----Original Message-----
From: Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of Larry Chase
Sent: Tuesday, 7 June 2005 6:01 AM
To: Syncro_T3_Australia@yahoogroups.com
Subject: RE: [Syncro_T3_Australia] Decouplers

Nick,



Did you get the contact info for Tom Legnel?



If not I'll dig it up for you.



larry chase

roadhaus.com

- - -



On Mon Jun 6 2:18 , 'Nick Bellgrove' <nick.bellgrove@dmit.sa.edu.au> sent:

> Installed it over 18 months ago, not cheap, but there was an arrangement to exchange nose

cone and get back a deposit, US $995-00 + US $250 if keeping nose cone. Manufactured by guy call Tom

Legnel (something like that) email name Talmal... (sorry couldnt find address. Look up / ask on US

syncro site on Yahoo groups. Not sure if he still makes them. Very good unit. No problems, first class

machining and components. Different in manufacture to some units as does not have a needle

bearing where two shafts meet, as in some units, but not a major concern to me as minimal movement

in difference between shaft speeds. Still cannot be towed with front wheels fixed.Easy to install, no

machining, 3 to 4 hour job from memory, quite straght forward. Good person to deal with, took about 2-

3 weeks to arrive after payment. Had non genuine vacuum reservoir but works well. Came with detailed

instructions on how to wire up light using existing decoupler loom. All syncros have this loom tucked

away above nose cone and finishing in dash. Could have installed separate light next to switch but

liked the idea of seeing something in the instrument cluster so I installed an additional LED in the

spare spot under the turn indicators/highbeam/temp LED'S. Looks great. I may still have instructions

if needed. Very comprehensive.







Yahoo! Groups Links

[nickbellau]

Larry

 

Could not find contact details for Tom, could you please look them up for us ?

 

Thanks,

 

 

 

Nick.

*******************************************
Nicholas Bellgrove
Lecturer - Photography
TAFE SA
Croydon Campus
Goodall Avenue
Croydon Park SA 5008
Australia
Ph +61 8 8204 0993
Fx +61 8 8345 4534
*******************************************

>>>roadguy@roadhaus.com 06/07/05 5:31 am >>>

Nick,

Did you get the contact info for Tom Legnel?

If not I'll dig it up for you.

larry chase
roadhaus.com
- - -

On Mon Jun  6  2:18 , 'Nick Bellgrove' <nick.bellgrove@dmit.sa.edu.au> sent:

>         Installed it over 18 months ago, not cheap, but there was an arrangement to exchange nose

cone and get back a deposit, US $995-00 + US $250 if keeping nose cone. Manufactured by guy call Tom
Legnel (something like that) email name Talmal... (sorry couldnt find address. Look up / ask on US
syncro site on Yahoo groups. Not sure if he still makes them. Very good unit. No problems, first class
machining and components. Different in manufacture to some units as does not have a needle
bearing where two shafts meet, as in some units, but not a major concern to me as minimal movement
in difference between shaft speeds. Still cannot be towed with front wheels fixed.Easy to install, no
machining, 3 to 4 hour job from memory, quite straght forward. Good person to deal with, took about 2-
3 weeks to arrive after payment. Had non genuine vacuum reservoir but works well. Came with detailed
instructions on how to wire up light using existing decoupler loom. All syncros have this loom tucked
away above nose cone and finishing in dash. Could have installed separate light next to switch but
liked the idea of seeing something in the instrument cluster so I installed an additional LED in the
spare spot under the turn indicators/highbeam/temp LED'S. Looks great. I may still have instructions
if needed. Very comprehensive.

[nickbellau]

Yes it does decouple/disconnect the the front two wheels via a sliding sleeve in the nosecone/output shaft at the front of the gearbox. The output shaft in a standard gearbox is connected to the drive shaft in the nosecone via a fixed sleeve over the splines of both shafts. In a decoupler, this sleeve is pushed to one end of the driveshaft  to disengage it from the gearbox shaft thus decoupling them.  The two shafts are alligned by  one end (with a type of pointed cone end,  fitting into the resessed end of the other, and surrounded by the sleeve. It is a metal on metal contact. ) When the shaft is decoupled these two surfaces are able to turn at different speeds when going aroung corners. As this difference is very minimal, the surfaces are surrounded by gearbox oil and thre is little/no pressure between them it is not a concern. As mentioned previously, the only problem would be if you fixed the front wheels when towing the vehicle,  then the difference between the two shafts would become extreme (one stationary and one fixed) which could cause excessive wear over long distances. The reason for this design I believe was to make it simple to manufacture and install. There is no additional machining required (unlike some of the other decouplers I looked at). You just have to remove the nosecone and sleeve, and replace it with the new unit. I am not sure how different each maufacturers units are but this one seemed to be tested and only one of the few available at the time.

 

Hope this makes sense.

[evm614]

Hi Nick
Thanks for this info. Is your ex Telstra model like my model in that it comes without the rear diff lock? IF so, then does that mean that my model syncro also has the necessary wire looming to install the decoupler. Once again thanks for the info.
Kindest Regards
Michael

Nick Bellgrove wrote:

Yes I installed a decoupler on my ex Telecom syncro and I thoroughly recommend it. Mine was made in USA and came complete with knob and vacuum lines (Genuine VW) and a vacuum reservoir made out of pvc pipe with brass fittings. Looks industrial but works well. Knob mounted on dash. Uses existing wiring loom to activate light.

 

 

Nick.


*******************************************
Nicholas Bellgrove
Lecturer - Photography
TAFE SA
Croydon Campus
Goodall Avenue
Croydon Park SA 5008
Australia
Ph +61 8 8204 0993
Fx +61 8 8345 4534
*******************************************

>>>mrphoto@iprimus.com.au 06/03/05 12:23 pm >>>
I know that a group order was placed some time ago to purchase
decouplers from Berndt Jaegar in Germany. I decided to withdraw from
that group purchase due to the fact that there was some conjecture
regarding non-diff lock ex Telstra models as there were no vacume
lines for the decoupler to work with.Nor were there any on-dash knobs
to activate the diff locks and hence the decoupler.

It was therefore the belief that this would make the installation of
the decoupler impossible or ineffective and a waste of time and money.
I have since heard some news that this might not be necess arily so.
Has anyone out there fitted a decoupler to a non locking
syncro and is it successfull and all that you desire.

Has the problem been resolved and what measures were initiated to
overcome and bypass the  percieved problem. If these problems have
been nutted out I'm interested to know are there any decouplers out
there to be sold.?
Regards
Michael.

[yurikorlowsky]

The original design of the decoupler by Styer-Puch incorporates a needle
bearing between the two shafts which eliminates friction when there is
differential in speeds. With this design there would be no problems
towing (with front wheels lifted). These types of decoupler are
available from Germany, Canada and South Africa.

I have posed a diagram in the File folder called decouple.jpg

Yurik
Syncro 16"
Perth WA


Nick Bellgrove wrote:

> Yes it does decouple/disconnect the the front two wheels via a sliding
> sleeve in the nosecone/output shaft at the front of the gearbox. The
> output shaft in a standard gearbox is connected to the drive shaft in
> the nosecone via a fixed sleeve over the splines of both shafts. In a
> decoupler, this sleeve is pushed to one end of the driveshaft to
> disengage it from the gearbox shaft thus decoupling them. The two
> shafts are alligned by one end (with a type of pointed cone end,
> fitting into the resessed end of the other, and surrounded by the
> sleeve. It is a metal on metal contact. ) When the shaft is decoupled
> these two surfaces are able to turn at different speeds when going
> aroung corners. As this difference is very minimal, the surfaces are
> surrounded by gearbox oil and thre is little/no pressure between them
> it is not a concern. As mentioned previously, the only problem would
> be if you fixed the front wheels when towing the vehicle, then the
> difference between the two shafts would become extreme (one stationary
> and one fixed) which could cause excessive wear over long distances.
> The reason for this design I believe was to make it simple to
> manufacture and install. There is no additional machining required
> (unlike some of the other decouplers I looked at). You just have to
> remove the nosecone and sleeve, and replace it with the new unit. I am
> not sure how different each maufacturers units are but this one seemed
> to be tested and only one of the few available at the time.
>
> Hope this makes sense.
>
> ------------------------------------------------------------------------
> *Yahoo! Groups Links*
>
> * To visit your group on the web, go to:
> http://groups.yahoo.com/group/Syncro_T3_Australia/
>
> * To unsubscribe from this group, send an email to:
> Syncro_T3_Australia-unsubscribe@yahoogroups.com
> <mailto:Syncro_T3_Australia-unsubscribe@yahoogroups.com?subject=Unsubscribe>
>
> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> Service <http://docs.yahoo.com/info/terms/>.
>
>

[nickbellau]

Mt syncro does not have any difflocks but the wiring loom is there for front and back difflocks and the decoupler.


*******************************************
Nicholas Bellgrove
Lecturer - Photography
TAFE SA
Croydon Campus
Goodall Avenue
Croydon Park SA 5008
Australia
Ph +61 8 8204 0993
Fx +61 8 8345 4534
*******************************************

>>>mrphoto@iprimus.com.au 06/07/05 11:19 am >>>

Hi Nick
Thanks for this info. Is your ex Telstra model like my model in that it comes without the rear diff lock? IF so, then does that mean that my model syncro also has the necessary wire looming to install the decoupler. Once again thanks for the info.
Kindest Regards
Michael

Nick Bellgrove wrote:

Yes I installed a decoupler on my ex Telecom syncro and I thoroughly recommend it. Mine was made in USA and came complete with knob and vacuum lines (Genuine VW) and a vacuum reservoir made out of pvc pipe with brass fittings. Looks industrial but works well. Knob mounted on dash. Uses existing wiring loom to activate light.

 

 

Nick.


*******************************************
Nicholas Bellgrove
Lecturer - Photography
TAFE SA
Croydon Campus
Goodall Avenue
Croydon Park SA 5008
Australia
Ph +61 8 8204 0993
Fx +61 8 8345 4534
*******************************************

>>>mrphoto@iprimus.com.au 06/03/05 12:23 pm >>>
I know that a group order was placed some time ago to purchase
decouplers from Berndt Jaegar in Germany. I decided to withdraw from
that group purchase due to the fact that there was some conjecture
regarding non-diff lock ex Telstra models as there were no vacume
lines for the decoupler to work with.Nor were there any on-dash knobs
to activate the diff locks and hence the decoupler.

It was therefore the belief that this would make the installation of
the decoupler impossible or ineffective and a waste of time and money.
I have since heard some news that this might not be necess arily so.
Has anyone out there fitted a decoupler to a non locking
syncro and is it successfull and all that you desire.

Has the problem been resolved and what measures were initiated to
overcome and bypass the  percieved problem. If these problems have
been nutted out I'm interested to know are there any decouplers out
there to be sold.?
Regards
Michael.

[evm614]

thanks nick.

Nick Bellgrove wrote:

Mt syncro does not have any difflocks but the wiring loom is there for front and back difflocks and the decoupler.


*******************************************
Nicholas Bellgrove
Lecturer - Photography
TAFE SA
Croydon Campus
Goodall Avenue
Croydon Park SA 5008
Australia
Ph +61 8 8204 0993
Fx +61 8 8345 4534
*******************************************

>>>mrphoto@iprimus.com.au 06/07/05 11:19 am >>>
Hi Nick
Thanks for this info. Is your ex Telstra model like my model in that it comes without the rear diff lock? IF so, then does that mean that my model syncro also has the necessary wire looming to install the decoupler. Once again thanks for the info.
Kindest Regards
Michael

Nick Bellgrove wrote:

Yes I installed a decoupler on my ex Telecom syncro and I thoroughly recommend it. Mine was made in USA and came complete with knob and vacuum lines (Genuine VW) and a vacuum reservoir made out of pvc pipe with brass fittings. Looks industrial but works well. Knob mounted on dash. Uses existing wiring loom to activate light.

 

 

Nick.


*******************************************
Nicholas Bellgrove
Lecturer - Photography
TAFE SA
Croydon Campus
Goodall Avenue
Croydon Park SA 5008
Australia
Ph +61 8 8204 0993
Fx +61 8 8345 4534
*******************************************

>>>mrphoto@iprimus.com.au 06/03/05 12:23 pm >>>
I know that a group order was placed some time ago to purchase
decouplers from Berndt Jaegar in Germany. I decided to withdraw from
that group purchase due to the fact tha t there was some conjecture
regarding non-diff lock ex Telstra models as there were no vacume
lines for the decoupler to work with.Nor were there any on-dash knobs
to activate the diff locks and hence the decoupler.

It was therefore the belief that this would make the installation of
the decoupler impossible or ineffective and a waste of time and money.
I have since heard some news that this might not be necess arily so.
Has anyone out there fitted a decoupler to a non locking
syncro and is it successfull and all that you desire.

Has the problem been resolved and what measures were initiated to
overcome and bypass the  percieved problem. If these problems have
been nutted out I'm interested to know are there any decouplers out
there to be sold.?
Regards
Michael.

[system]

Thanks for the info Nick. Its all now clear as mud! I one of the people who actually needs to see it work to properly understand it but you have done an admirable job trying to explain the system.

Regards,

Scott

 

---

From: Syncro_T3_Australia@yahoogroups.com [mailto: Syncro_T3_Australia@yahoogroups.com ] On Behalf Of Nick Bellgrove
Sent: Tuesday, 7 June 2005 10:35 AM
To: Syncro_T3_Australia@yahoogroups.com
Subject: RE: [Syncro_T3_Australia] Decouplers

 

Yes it does decouple/disconnect the the front two wheels via a sliding sleeve in the nosecone/output shaft at the front of the gearbox. The output shaft in a standard gearbox is connected to the drive shaft in the nosecone via a fixed sleeve over the splines of both shafts. In a decoupler, this sleeve is pushed to one end of the driveshaft  to disengage it from the gearbox shaft thus decoupling them.  The two shafts are alligned by  one end (with a type of pointed cone end,  fitting into the resessed end of the other, and surrounded by the sleeve. It is a metal on metal contact. ) When the shaft is decoupled these two surfaces are able to turn at different speeds when going aroung corners. As this difference is very minimal, the surfaces are surrounded by gearbox oil and thre is little/no pressure between them it is not a concern. As mentioned previously, the only problem would be if you fixed the front wheels when towing the vehicle,  then the difference between the two shafts would become extreme (one stationary and one fixed) which could cause excessive wear over long distances. The reason for this design I believe was to make it simple to manufacture and install. There is no additional machining required (unlike some of the other decouplers I looked at). You just have to remove the nosecone and sleeve, and replace it with the new unit. I am not sure how different each maufacturers units are but this one seemed to be tested and only one of the few available at the time.

 

Hope this makes sense.

 

[syncroaustralia]

The description given by Nick is technically accurate (thanks Nick)
as is the diagram posted by Yurik (thanks Yurik).

The decoupler is in the front extension housing of the gearbox and
is lubricated by the gearbox oil. The decoupler that we purchased
from Bernd Jaeger in Germany has the needle rooler bearing in the
extension shaft and is thus capable of running at any speed
differential. The practical effect is that the vehicle can be
towed, with the decoupler in the disengaged position, with four
wheels on the ground, front wheels on the ground or rear wheels on
the ground.

There is little price difference between the bearing and non bearing
version, so it is prudent to go for the bearing version.

The Bernd Jaeger kit is complete with every last piece for an
install.

As I said in a recent posting, the addition of a decoupler is
independent of diff locks.

Les

[larchase (Larry Chase)]

Volks,

This is the email address I have for Tom Legnel.

talmal@aol.com

BTW ... he is very respected up this way.

larry chase
roadhaus.com

On Mon Jun 6 18:51 , 'Nick Bellgrove' <nick.bellgrove@dmit.sa.edu.au> sent:

>
>Could not find contact details for Tom, could you please look them up for us ?
>
> Thanks,

> Nick.

[francesca.coles]

Hi All,

I should first say Merry Christmas, as we're so nearly there!

I realise many of you might be otherwise occupied on Christmas Eve, but if there's anyone
who could advise me sometime on purchasing a decoupler, that would be grand. I should
say that I've done enough research (including mining past posts on this forum) to know
that the decoupler issue is a vexed one. Les has also given me his informed $2 worth -
thanks again for that.

You don't need to either talk me in or out of getting one, but I'd appreciate pointers about
where to buy one. (Incidentally, the issue is an aggressive VC in our recently purchased
1991 Sunliner camper (130K on the clock), which had done damage to the transaxle.
Fortunately, it was an honest sale, and the ex-owner saw good to contribute to the repair
bill - how's that for Christmas spirit!) I see it can indeed be a steep learning curve owning
a Syncro, but we are loving our new bus with shiny new gearbox and looking forward to
taking the kids up to Dargo in it after Christmas. For the moment we are rolling in 2WD,
minus the tail shaft, but I'm sure we can still go places.

I've seen the Bernd Jaeger decouplers, the Busman's ones, but also one from Syncro
Services in Germany which appear to be considerably cheaper. The Syncro Hospital in SA
have one too, but apparently we will have to get the nose cone machined here ourselves
and I'm not sure what that involves. And then there are the American ones... Obviously,
the cheaper the better, so long as it's reliable and durable.

Your thoughts appreciated,

Francesca.