lewis
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| posted on 1/3/13 at 06:48 PM |
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Geometry setup indy
Can anyone tell me the correct geometry figures for a standard MK indy? Also steering toe angle so I can get it all set up properly,they will need
these figures.
Cheers lewis.
I am a driving god!..........sort of
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whitestu
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| posted on 1/3/13 at 06:59 PM |
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Not sure there is a single correct set of figures.
From memory mine are:
Toe 0.5 degrees front and rear (rear is as it comes from the factory)
Caster 6.5 degrees, via modified top bones. Had about 5 degree as standard.
Camber front 0.5 degree, rear 0 degrees
Mushroom with hole to front.
Stu
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designer
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| posted on 1/3/13 at 07:00 PM |
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Don't MK give you these??
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bi22le
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| posted on 1/3/13 at 07:08 PM |
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use the search. this question gets asked about once a month!
dont mean to come across harsh, its not meant like that. i just find that searching for mainstream info normally answers your question and provides
other nuggets of info associated with it.
[Edited on 1/3/13 by bi22le]
Track days ARE the best thing since sliced bread, until I get a supercharger that is!
Please read my ring story:
http://www.locostbuilders.co.uk/forum/13/viewthread.php?tid=139152&page=1
Me doing a sub 56sec lap around Brands Indy. I need a geo set up! http://www.youtube.com/watch?v=EHksfvIGB3I
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nick205
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| posted on 1/3/13 at 07:26 PM |
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The MK Indy rear toe is non-adjustable with the standard wishbones. In my own experience the rear toe, as built, was positive one side and negative
the other and by differing amounts. The general consensus seems to be that IRS cars should have rear toe in to improve cornering grip.
I adjusted mine to give both sides the same degree of positive toe in by fitting shim washers between the rear hub carrier and rear upright. This was
only measured static with the ride height already set. The difference was very noticeable on the road on tighter bends and roundabouts.
Might be worth checking what extent your setup people will go to and maybe obtaining some shim washers before you start.
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Not Anumber
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| posted on 1/3/13 at 08:23 PM |
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Ideally it would be great to have some static web pages alongside the forum for setting out information like this that gets asked frequently.
Yes, the answers can always be found by using the search facility but often this means wading through lots of posts and having to piece it together
from several threads or posts. Add to that all the instances where information is given in a post then challenged by someone else and promptly goes
off topic so there is no clear defineable answer in the thred for someone to later find in a search. It could be done with stickys but adding a
sticky for every bit of established information isnt feasible.
For new builders and those looking to dip their toes in the water I imagine this can be quite confusing.
Is there a reason this type of information hasn't been collected together and put on some webpages ?
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lewis
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| posted on 1/3/13 at 08:46 PM |
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quote:
Originally posted by Not Anumber
Ideally it would be great to have some static web pages alongside the forum for setting out information like this that gets asked frequently.
Yes, the answers can always be found by using the search facility but often this means wading through lots of posts and having to piece it together
from several threads or posts. Add to that all the instances where information is given in a post then challenged by someone else and promptly goes
off topic so there is no clear defineable answer in the thred for someone to later find in a search. It could be done with stickys but adding a
sticky for every bit of established information isnt feasible.
For new builders and those looking to dip their toes in the water I imagine this can be quite confusing.
Is there a reason this type of information hasn't been collected together and put on some webpages ?
This :-s search brings up so much irrelevant misleading stuff,this is a forum to ask questions is it not??
I am a driving god!..........sort of
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Custardpants
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| posted on 6/3/13 at 11:51 PM |
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I'd recommend front toe of close to 0 for track use, and smooth Tarmac. Harder work on more uneven roads, but much better turn in.
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40inches
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| posted on 7/3/13 at 07:51 AM |
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I copied this from a post by Snoopy, many years ago, he should know/have known:
"basic setup
tracking 0-1degree toe
camber 1 degree in all round
mushroom inserts offset hole to front
tyre pressures 17 -18 p.s.i
damper settings around 7 clicks
ride height personaly about 4 inch
[Edited on 26/4/06 by snoopy]
Ride height front 110mm
rear 130mm
Damper settings 6 clicks from full anti-clockwise
Tyre pressures 17 p.s.i"
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lewis
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| posted on 7/3/13 at 08:31 AM |
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Thanks for the helpful replys guys.
I am a driving god!..........sort of
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britishtrident
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| posted on 7/3/13 at 08:43 AM |
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Be very careful with the rear toe setting --- the rear must have some toe-in 0.2 to 0.3 degrees is enough
At the front 0 to 0.20 degrees ie. aim for just a smidgen of toe.
0 degrees of toe gives minimum tyre wear in straight line running.
Some toe-in gives straight line stability but on the front makes the car more reluctant to turn in.
Toe-out on the rear just makes the car unstable.
For track use you need more negative camber, but it increases tyre wear in road use.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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SeanStone
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| posted on 7/3/13 at 08:53 AM |
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I'll second toe in at the rear.
Under acceleration the rears start to toe out, which as mentioned, will make it unstable
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