Skip to content
Aussieveedubbers

irs trailing arms question..

0 likes
Share Share on Facebook Share on X Share on Reddit

cnfabo Custom Title Time!

1,353 posts · joined Apr 2008 ·

#780289
when you circuit racing guys changed your bugs to irs did you swap the trailing arms from left to right so when you lowered the car you wouldnt get excessive camber???

im about to start the conversion in 1 and a half weeks...

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#780354
Whats excessive camber?
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

johny rotten Officially Full-On Dubber

366 posts · joined Apr 2004 ·

#780402
neg camber can be helpful

fastnuf Slammed & Awesome Dubber

86 posts · joined Jan 2005 ·

#780414
We only changed them from semi-auto to manual. The car not the trailing arms.
White Knuckle Racing Team.

cnfabo Custom Title Time!

1,353 posts · joined Apr 2008 ·

#780426
well, im thinking that 1.5-2 degrees will be good, but no more.thats what i have been reading the circuit guys like on rear. i have propably 3 with my swing axle setup now..and the car will be as low when the irs gear goes on....

Joel Now containing 100\% E-Wang

9,368 posts · joined Feb 2006 ·

#780429
you cant compare camber of a lowered swinger to IRS

you gotta go pretty bloody low with an IRS before camber becomes and issue

mine was on the bumpstops and only had 2.5 degrees

you wouldnt go anywhere near that low if your hitting the track

mactaylor Custom Title Time!

1,005 posts · joined Aug 2007 ·

#780486
1.5 with the arms level!
EVERLAST CONCRETE TANKS
1800 552 123

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#780549
What are the guy's driving that say 1.5 - 2 deg neg??

IMO u should dial in more neg than that. You want to set it up to be adjustable too.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

cnfabo Custom Title Time!

1,353 posts · joined Apr 2008 ·

#780591
beetles.....articles,like on aircooled.net by greg ward or a old one buy jeff unwin and others...1.5-2 deg for the rear and 2-4.5 for the front...

adjustable,aaarrrr,,,i have the double spring plates so how am i supposed to do that....

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#780647
Hi

Too much neg and you really cutdown the tyre contact patch under brakes.

You can adjust the camber on the IRS rear ends by adjusting the angle of the spring plates to trailing arm, I'm not talking about the ride height.

For example, if you had the car jacked up and you backed off the spring plate to trailing arm bolts and let trailing arm drop down, that would give you more neg camber, if you put a jack under the lower shock mount lifted the trailing arm with a jack, this would cause positive camber.

A guy in the UK was making adjustable inner bushes to adjust camber I believe.

Steve

cnfabo Custom Title Time!

1,353 posts · joined Apr 2008 ·

#780707
thanks for that steve...

STIDUB Over it.

1,497 posts · joined Jun 2008 ·

#780721
i thought spring plates could only do toe adjustment? (forward & back in the slotted bolt holes)

so camber is an deflection from straight from the plate to arm?

whats the inner bolt washer bits for then?
Volkswagen Drivers Club of Queensland - member 🙂

STIDUB - yep its still a work in progress

Vwdcq club car racing/ and crashing while my bug isn't finished.

The above are personal views, no more, no less

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#780738
Hi

There is enough slop built into the bolts to allow the camber adjustment, there's not a lot of adjustment.

I always nip my bolts up and then put a jack under the shock mount to ensure maximum positive camber on a lowered car.

Steve

This photo of my sons 944 rear end should help explain what I'm getting at.

1 attachment · Log in to view

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 ·

#780839
1303Steve wrote:For example, if you had the car jacked up and you backed off the spring plate to trailing arm bolts and let trailing arm drop down, that would give you more neg camber, if you put a jack under the lower shock mount lifted the trailing arm with a jack, this would cause positive camber.


Steve
I thought it would be the other way around.
Lift the trailing arm in relation to the spring plate
gives more negative camber.

Do you have any links to the inboard bolt for camber adjustment Steve?
westi wrote:That's mad Alan.

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#780848
Hi Dave

I was always told that was the way to get as much positive camber as possible on lowered car by my VW mentor when I was a youngtser.

Below is a photo of the camber bolt, it has a sway bar link on it and the Porsche toe in tool.

Steve

3 attachments · Log in to view

cnfabo Custom Title Time!

1,353 posts · joined Apr 2008 ·

#780964
now im lost...................what the????

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#780974
Hi

Sorry, Dave and I high-jacked your thread. I was responding to Daves question about 944 stuff.

Steve

cnfabo Custom Title Time!

1,353 posts · joined Apr 2008 ·

#781001
i was talking about the bolt, what the?? wouldnt even know where that goes... i seen the one vassys using, and cant figure out how that works either...

is there any pics on AVD of how much clearencing of the frame horns needs to be done for the axles...

mactaylor Custom Title Time!

1,005 posts · joined Aug 2007 ·

#781033
i bought some spring plate bolts off matt they are handy for toe changes not much use for camber change as all they do is bend the spring plate, really need inner trailing arm adjustable bolts.
EVERLAST CONCRETE TANKS
1800 552 123

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#781056
Don't rush in guy's....I have something you'll like, but still in the R&D stage atm. I'm hoping, combined with the 944 style spring-plate eccentric which is still available (while stocks last), we will have unsurpassed adjustability in camber and toe.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#781119
Thanks for the link Dave, that's a cool way of doimg it. I had been discussing with a someome in the know about making the eccrentric style adjustment in the pivot box, he already has an adjustable pivot box for use in a splitty irs conversion, and after using them, I rekon the idea is great.
I do like the offset bolt deal though, as it can be fitted to any irs car.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

cb john Wolfsburg Wizard

470 posts · joined Jun 2007 ·

#781150
😂😂

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#781152
cb john wrote:😂😂
Don't tell me you've had the call already John?
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

cb john Wolfsburg Wizard

470 posts · joined Jun 2007 ·

#781161
I'm making them for a couple of years...I mean splitty pivot boxes..

STIDUB Over it.

1,497 posts · joined Jun 2008 ·

#781245
DB, any chance you would like to make up some of those if theres enough demand?

or does anyone have some already, how much difference does it make? (pics would be awesome)
Volkswagen Drivers Club of Queensland - member 🙂

STIDUB - yep its still a work in progress

Vwdcq club car racing/ and crashing while my bug isn't finished.

The above are personal views, no more, no less