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Torsen repl for VC   Message List  
Reply | Forward Message #40038 of 43429 |
Re: Torsen repl for VC

Mark is correct, of course -- isn't he always?

Let me say that on more than one occassion when my Subi overpowered a
stock rear axle, I have done exactly what Mark describes: I drove
around for days while awaiting parts, driving Fente, a 1990 front-
wheel-drive Vanagon (Adventurewagen, actually!)with 100% torque to
the front, through the slush-o-matic (an only medium-aggressive VC).
Repairs returned her to her current status: a "SSAW," that is,
a "SyncroSubieAdventureWagen."

Vr, Milt


--- In Syncro@yahoogroups.com, "Ken" <unclekenz@...> wrote:
>
>
> Gday Mark,
>
> Yes I've often wondered too what's fact and fiction about torque
> potential at each wheel of a syncro, depending on any scenario.
>
> For example, a stock standard syncro with a rear wheel spinning,
> wouldn't the torque be 100% thereabouts at the front wheels? Then by
> extension, one back and also one front wheel spinning at the same
time,
> that means no torque anywhere.
>
> Then in my case when the front solid shaft is coupled, wouldn't the
> torque potential at each wheel change in say two different
scenarios,
> first with no wheel spinning and then the other, one rear wheel
> spinning.
>
> Or is it simply that torque isn't split, meaning 100% torque
potential
> is available everywhere that wheel sets are gripping?
>
> Or is this also just more conjecture? Perhaps there is a known
> authoritative source on all this?
>
> Cheers.
>
> Ken
>
>
> --- In Syncro@yahoogroups.com, Mark Drillock <drillock@> wrote:
> >
> > I wonder where this 50% notion comes from. There is nothing
limiting
> > torque to the front wheels of the Syncro to only 50%.
> >
> > You can drive around with no rear axles installed and still get
normal
> > performance from the vehicle on dry paved roads. Nearly 100% of
torque
> > is available at the front wheels even with a VC. If it wasn't the
> > vehicle would be crippled with the rear axles out.
> >
> > 100/100 is closer to the bias of a Syncro, not 50/50.
> >
> > Mark
> >
> >
> >
> > bouldersyncro wrote:
> > > .........
> > >
> > > In the Syncro the front axle only gets some range (let's say 5%
to
> > > 45%) of the torque. and it's not really that variable, more
on/off,
> > > but never more than 50% (minus VC slip) of the power ever
reaches
> the
> > > front wheels. With a Torsen you could get upwards of 80% going
> > > forward. Brilliant!
> > > ............
> > >
> >
>





Mon Jan 12, 2009 7:37 pm

warbucks57
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Message #40038 of 43429 |
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Talked at length to Peloquins yesterday...Town is flooded in and nothing better to do...He is still working on it and thinks he has all the pre prototype bugs...
aatransaxle
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Jan 9, 2009
5:52 pm

Daryl, That is great to hear. I am assuuming that the 75/25 figure you mention is what the bias ratio will be, e.g. 3:1? That would be awesome. Instant...
bouldersyncro
Offline Send Email
Jan 9, 2009
9:34 pm

I have driven my Syncro with no rear driveshafts installed. It drove pretty much normally, which indicates a near, if not total, transfer of torque to the...
Larry Hamm
patlar06
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Jan 10, 2009
6:14 am

Actually Larry you are right. I have just now realized that if the VC is replaced with a Torsen it does not really solve the lack of a traditional center...
bouldersyncro
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Jan 10, 2009
7:23 am

Daryl, That is great to hear. I am assuuming that the 75/25 figure you mention is what the bias ratio will be, e.g. 3:1? That would be awesome. Instant...
bouldersyncro
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Jan 9, 2009
9:43 pm

All I can hope for is that he doesn't go the way of Boston Bob any time soon........
Kim Brennan
kbrennanwv
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Jan 9, 2009
10:29 pm

75% rear and 25% front at all times is one choice..The planetary does a 2:1 ratio in normal mode and the guts can be "ramped" for different ratio's with the...
aatransaxle
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Jan 10, 2009
12:36 am

Hmmm. Well here is what I've gleaned from the Audi newgroups and a day in a Hummer H1, so it is not a full on technical understanding. On an Audi (and I...
bouldersyncro
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Jan 10, 2009
11:53 am

What I have in front was sold as a LSD, not a "Peloquin". So I surely hope it is in fact a LSD. :) After the LSD was added to mine, I could definitely feel a...
Kim Brennan
kbrennanwv
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Jan 10, 2009
4:08 pm

My apologies folks, I see now that a Torsen replacing the VC will not act as a Torsen would in a vehicle with a traditional center differential. Silly me....
bouldersyncro
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Jan 10, 2009
5:08 pm

I wonder where this 50% notion comes from. There is nothing limiting torque to the front wheels of the Syncro to only 50%. You can drive around with no rear...
Mark Drillock
noway98765
Offline Send Email
Jan 10, 2009
10:44 pm

Gday Mark, Yes I've often wondered too what's fact and fiction about torque potential at each wheel of a syncro, depending on any scenario. For example, a...
Ken
unclekenz
Offline Send Email
Jan 12, 2009
10:39 am

Right, Ken, with a stock Syncro we have nearly full torque available in front and rear depending on conditions. The exact situation varies with use of the...
Mark Drillock
noway98765
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Jan 12, 2009
8:16 pm

Gday Mark, Sorry Mark. I was deliberately trying to get down to the root fundamentals on this without diflocks being involved, they only muddy the waters even...
Ken
unclekenz
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Jan 12, 2009
10:49 pm

Mr Reed, I Recieved the sway links,please email me, my apologies to the group,didnt know any other way to find Mr. Reed. Thanks Burley ... From: Ken...
burl beveridge
burleymotors...
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Jan 13, 2009
12:27 am

Mark is correct, of course -- isn't he always? Let me say that on more than one occassion when my Subi overpowered a stock rear axle, I have done exactly what...
Milton H. Bank, II
warbucks57
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Jan 12, 2009
9:20 pm

Kim...You have a Peloquin LSD...I just call them an LSD for convenience sake .A Torque biasing limited slip diff built/designed by Gary Peloquin... ...He is...
aatransaxle
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Jan 10, 2009
5:49 pm

Hey, I put the smilie there for a reason. For me the device is what I wanted. At the time it wasn't possible (parts, and monetarily) for me to put a locking...
Kim Brennan
kbrennanwv
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Jan 10, 2009
8:03 pm

yeah, I'm wondering what is meant by 'preloaded' too. on a Subaru WRX Sti .........the front-rear torque bias is fully adjustable from 100 % rear, 0 % front,...
Scott Daniel - Turbo...
turbovan2001
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Jan 10, 2009
10:44 pm

Wonder how the STi's control their bias.. When we used to run a Subie RS 2.5 for rally fun, we used a "Koz" japaneese diff. It was perfect for beating the...
aatransaxle
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Jan 11, 2009
2:27 am

When I picked up my Syncro in Charleston, SC, I drove it to Atlanta, GA. While I was adjusting the brakes, I discovered that the ring and pinon were totally...
VW68pu87syncro@...
jcdjparsons
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Jan 20, 2009
6:18 am
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