| [ Total Views: 1519 | Total Replies: 25 | Thread Id: 83811 ] |
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 cnfabo
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| posted on May 22nd, 2010 at 06:58 PM |
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irs trailing arms question..
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...
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 matberry
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| posted on May 22nd, 2010 at 10:02 PM |
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Whats excessive camber?
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johny rotten
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| posted on May 23rd, 2010 at 07:49 AM |
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neg camber can be helpful
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fastnuf
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| posted on May 23rd, 2010 at 09:15 AM |
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We only changed them from semi-auto to manual. The car not the trailing arms.
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cnfabo
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| posted on May 23rd, 2010 at 11:02 AM |
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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....
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Joel
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| posted on May 23rd, 2010 at 11:12 AM |
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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
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mactaylor
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| posted on May 23rd, 2010 at 05:14 PM |
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1.5 with the arms level!
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matberry
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| posted on May 23rd, 2010 at 08:52 PM |
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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.
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cnfabo
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| posted on May 24th, 2010 at 07:13 AM |
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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....
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1303Steve
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| posted on May 24th, 2010 at 03:18 PM |
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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
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cnfabo
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| posted on May 24th, 2010 at 06:35 PM |
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thanks for that steve...
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STIDUB
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| posted on May 24th, 2010 at 07:04 PM |
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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?
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1303Steve
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| posted on May 24th, 2010 at 07:53 PM |
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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.
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dangerous
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| posted on May 25th, 2010 at 07:47 AM |
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| Quote: | Originally
posted by 1303Steve
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
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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?
| Quote: | Originally
posted by westi
That's mad Alan.
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1303Steve
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| posted on May 25th, 2010 at 08:55 AM |
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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
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cnfabo
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| posted on May 25th, 2010 at 08:43 PM |
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now im lost...................what the????
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1303Steve
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| posted on May 25th, 2010 at 09:47 PM |
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Hi
Sorry, Dave and I high-jacked your thread. I was responding to Daves question about 944 stuff.
Steve
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cnfabo
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| posted on May 25th, 2010 at 10:47 PM |
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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...
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mactaylor
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| posted on May 26th, 2010 at 02:18 AM |
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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.
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matberry
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| posted on May 26th, 2010 at 09:19 AM |
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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.
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OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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dangerous
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| posted on May 26th, 2010 at 01:59 PM |
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You can use the hellbug/daimo mod to adjust the toe,(a slight variation of what Steve has posted above),
and these (or a copy),for camber AND toe.
http://cal-look.no/lounge/index.php/topic,12609.0.html
...and some more:
http://cal-look.no/lounge/index.php/topic,8770.0.html
| Quote: | Originally
posted by westi
That's mad Alan.
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matberry
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| posted on May 26th, 2010 at 04:13 PM |
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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.
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cb john
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| posted on May 26th, 2010 at 06:38 PM |
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matberry
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| posted on May 26th, 2010 at 06:54 PM |
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| Quote: | Originally
posted by cb john
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Don't tell me you've had the call already John?
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
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cb john
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| posted on May 26th, 2010 at 07:22 PM |
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I'm making them for a couple of years...I mean splitty pivot boxes..
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STIDUB
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| posted on May 26th, 2010 at 11:41 PM |
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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)
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