Ausmini
It is currently Fri Aug 15, 2025 4:00 pm

All times are UTC + 10 hours




Post new topic Reply to topic  [ 12 posts ] 
Author Message
PostPosted: Wed Jan 20, 2010 3:02 pm 
Offline
848cc
848cc

Joined: Tue Dec 11, 2007 7:49 pm
Posts: 194
Location: Gawler SA
hi all,
just wanted some coments on my wheel alignment, car has rose jointed adj LCA's, tie rods, and adj rear brackets. Wheels are 10x6 with the oldschool dunlop R's (S tread pattern). Car is hillclimb/m'khana/maybe some mallala. No road.

I was thinking this:
front: Neg 2.5 camber, 2mm toe out, not sure on caster
rear: 1deg neg camber, 1mm toe out.

was thinking maybe more toe out (4mm and 2mm) and have no idea about caster.

all sugestions welcome, even non racers :)

Thanks in advance,
Jeff

_________________
1974 1150cc Leyland Mini S racer,
1975 No motor Leyland Mini "ute"
1991 IPRA Honda Integra (in the build)
1995 Land Rover Discovery 300Tdi

CAMS Scrutineer


Last edited by DA9jeff on Wed Jan 20, 2010 9:55 pm, edited 1 time in total.

Top
 Profile  
 
 Post subject:
PostPosted: Wed Jan 20, 2010 4:04 pm 
Offline
848cc
848cc
User avatar

Joined: Mon Jul 21, 2008 3:34 pm
Posts: 346
Location: Brisbane
Where are you based?

Best to speak to the likes of GR or Ken Neilson depending on where you are & what tyres you are using. They will give you good starting points.

_________________
1964 Nb Race Car - big bore short stroke & lots of revs - Sold
1969 Mk2 Cooper S - First Car


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jan 20, 2010 4:06 pm 
Offline
1360cc
1360cc
User avatar

Joined: Sat May 08, 2004 9:01 pm
Posts: 6844
Location: Cairns, Nrth QLD
Or wait for Steve (justminis) to come along!

_________________
Image
http://www.youtube.com/user/Hanras


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jan 20, 2010 4:30 pm 
Offline
848cc
848cc

Joined: Sun Mar 29, 2009 7:14 pm
Posts: 226
Location: Brisbane
Quote:
Front Suspension Settings: toe-out 1/8" overall, castor positive 2.5 degrees, camber 1/4 degree negative.

Rear Suspension Settings: toe-in 1/16" either side, camber 1/8 degree negative.

these are specs from this article: http://miniownersclub.com.au/index.php? ... 3&Itemid=2

for a road car but found by the author to be "very good", maybe you can start with them and work from there?


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jan 20, 2010 5:25 pm 
Offline
Supercharged
User avatar

Joined: Mon Oct 13, 2008 3:09 pm
Posts: 1246
Location: Adelaide
give jason armstrong a call,

Dave Armstrong Motors
7 Acrylon Rd, Salisbury, SA 5106

ph: 82581509


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jan 20, 2010 6:01 pm 
Offline
848cc
848cc
User avatar

Joined: Tue Apr 19, 2005 1:19 pm
Posts: 338
Location: Adelaide
For Motorkhanna's hillclimb's and Mallala all require different settings.
For khanna's typically require a similar set up for the road,
Castor 2-3 degrees maybe less
1-1.5 Degree Neg Camber
1mm Toe out Front
2-3mm Toe In Rear
0-0.5 neg camber rear

Hillclimb
Castor 5+ derees
Camber 2 Neg derees
1mm toe out Front
2-3mm Toe in Rear
1 degree Camber Neg Rear

Mallala
Castor 6+ Degrees
Camber 2.5-3 Neg Camber
1mm Toe out Front
1.5-2 Toe in Rear
2 Degrees Neg rear

these settings are only a rough guide car and tyre condition will require changes

_________________
4efte powered Clubman
supercharged 998 race car


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jan 20, 2010 6:03 pm 
Offline
1275cc
1275cc
User avatar

Joined: Fri Oct 01, 2004 4:07 pm
Posts: 4682
Location: sunbury victoria
start with a basic setup and then drive the car and feel what its doing.. its no good asking what another person does with there car as they arent you.. feel what all 4 wheels are doing and make tweeks etc to it

go to a track to test this though, doing a hillclimb or motorkhana wont tell you half as much as what a good solid track session does. push the limits, find the issues, fix them! :wink:

_________________
Potato


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jan 20, 2010 9:18 pm 
Offline
848cc
848cc

Joined: Tue Dec 11, 2007 7:49 pm
Posts: 194
Location: Gawler SA
well thats the point, innit? :)

I just need something to take to the wheel alignment place to get it in the ball park, then just tune as i see fit from there. I can do tyre pyro's and camber and toe is easy enough to do manually.

Thanks for the replies, im surprised that no-one reccomends rear toe out? i assume minis are tail happy enough.

Im in the awkward situation of tuning the car from 1000kms away, while my dad and brother run it. in about 4 months ill be able to tune it person.

Thanks,
Jeff

_________________
1974 1150cc Leyland Mini S racer,
1975 No motor Leyland Mini "ute"
1991 IPRA Honda Integra (in the build)
1995 Land Rover Discovery 300Tdi

CAMS Scrutineer


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jan 20, 2010 9:31 pm 
Offline
This space for rent
User avatar

Joined: Thu Feb 08, 2007 12:40 pm
Posts: 5455
Location: Melbourne
I was going to mention the rear toe out, but you requested feedback from racers only :roll: ;)

I had toe out on my roadie for a while until I got it properly aligned, it was twitchy. On tarmac it was fine, just tended to lift-off-oversteer a bit more than normal.. but on dirt it was downright scary, wanting to swap ends with the slightest provocation.

I'd point the rears straight ahead if you want a bit of rear lift-off attitude, otherwise stick with a little toe-in.

_________________
Simon

The adventures of an owner builder in the Tallarook Ranges

Image


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jan 20, 2010 9:57 pm 
Offline
848cc
848cc

Joined: Tue Dec 11, 2007 7:49 pm
Posts: 194
Location: Gawler SA
sgc: OP edited :D

i do love lift off oversteer, its how FWD's (IMO) go quick.

anymore for anymore?

_________________
1974 1150cc Leyland Mini S racer,
1975 No motor Leyland Mini "ute"
1991 IPRA Honda Integra (in the build)
1995 Land Rover Discovery 300Tdi

CAMS Scrutineer


Top
 Profile  
 
 Post subject:
PostPosted: Wed Jan 20, 2010 10:31 pm 
Offline
848cc
848cc
User avatar

Joined: Mon Jul 21, 2008 3:34 pm
Posts: 346
Location: Brisbane
Again - talk to an expert who would point you in the right direction in regards to tyres, driver style & racing class. There are heaps out there. Use Yelow Pages for your local Mini guru as a start point.

I used my local guru for a starting point in type pressure at the start of last season (went well with his advice) and then adjusted to what I thought felt good - lower, and then lower again etc (not so well)...

Anyway, went slower and stuffed my tyres. I know there is a lesson to be learnt there somewhere :wink:

Trust the guru... After talking to him after the event he said something like "You did WHAT!" :twisted:

Looking for new A032R's.... Anyone?

LOL or is that crying in my beer..........

Kuzzy

_________________
1964 Nb Race Car - big bore short stroke & lots of revs - Sold
1969 Mk2 Cooper S - First Car


Top
 Profile  
 
 Post subject:
PostPosted: Thu Jan 21, 2010 7:59 am 
Offline
THIS SPACE FOR RENT
User avatar

Joined: Wed Jun 09, 2004 3:35 pm
Posts: 11847
Let's keep this place organised, shall we?

http://www.ausmini.com/forums/viewtopic.php?t=25470

_________________
Image


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 12 posts ] 

All times are UTC + 10 hours


Who is online

Users browsing this forum: No registered users and 283 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  

© 2016 Ausmini. All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.