Wheel Offset

Author
Discussion

itsallyellow

Original Poster:

3,692 posts

227 months

Monday 10th November 2008
quotequote all
What effect on handling does increasing the offset have on the front wheels.

Will having a greater offset on the front cause instability??

Mike

jellison

12,803 posts

284 months

Tuesday 11th November 2008
quotequote all
itsallyellow said:
What effect on handling does increasing the offset have on the front wheels.

Will having a greater offset on the front cause instability??

Mike
Can't see it making much - if any difference, if presumably you are talking less that 5 or 10mm spaced each side.

Any increase on the front, I'd do on the back too to keep the reallative tarck approc in balance.

lanan

814 posts

235 months

Tuesday 11th November 2008
quotequote all
If depends if you are talking of increasing wheel offset but maintaining original track...or effectively narrowing or widening track, as you might do either adding or removing wheel spacers.

Graham

jellison

12,803 posts

284 months

Tuesday 11th November 2008
quotequote all
lanan said:
If depends if you are talking of increasing wheel offset but maintaining original track...or effectively narrowing or widening track, as you might do either adding or removing wheel spacers.

Graham
True - but by how much are we actually talking about?

itsallyellow

Original Poster:

3,692 posts

227 months

Tuesday 11th November 2008
quotequote all
Maybe an extra 64mm further out.

Mike

teamHOLDENracing

5,090 posts

274 months

Tuesday 11th November 2008
quotequote all
Are you saying that you are considering increasing the track by 64mm each side by using wheels with a different offest to the originals?

itsallyellow

Original Poster:

3,692 posts

227 months

Tuesday 11th November 2008
quotequote all
Sort of Andy. Just trying to get peoples views on this. I think it would make the front unstable.

Mike

Graham

16,369 posts

291 months

Tuesday 11th November 2008
quotequote all
I dont know about stability but I'd have though an extra 64mm offset would put a huge strain on the hubs and the rest of the front suspension

jellison

12,803 posts

284 months

Tuesday 11th November 2008
quotequote all
5 inches wider - that sounds NUTS

lanan

814 posts

235 months

Tuesday 11th November 2008
quotequote all
Are you also known as Carlos Fandango....65MM..yikes

Edited by lanan on Tuesday 11th November 21:51

jellison

12,803 posts

284 months

Wednesday 12th November 2008
quotequote all
Yellow - you need to check on the hub manufacturer at the front and the TVR made one a the back, but sound like way too much to me.

If t is ok are you going to have big bubble arches?

itsallyellow

Original Poster:

3,692 posts

227 months

Wednesday 12th November 2008
quotequote all
Not sure what im doing yet. May not change too much at all in the end. See how the winter goes.

Mike

teamHOLDENracing

5,090 posts

274 months

Wednesday 12th November 2008
quotequote all
Mike - the other things I could have suggested last night were rose jointing the suspension and a sequential box. As we discussed, widening the track should be done via the wishbones, not wheel offset as it could destroy wheel bearings and/or end in catastrophic hub failure. Which is never nice.

jellison

12,803 posts

284 months

Wednesday 12th November 2008
quotequote all
Damn I was going to say that about the widening of the wishbones!

Seem a bit excessive as only the end of the cars first year, and have to get longer driveshafts and mod the steering arms.

What did they do on the GT2 and RollCentre cars with the bubbly arches (love those).

teamHOLDENracing

5,090 posts

274 months

Wednesday 12th November 2008
quotequote all
The other thing I'd suggest would be to bung someone like Phil Keen a few quid to go testing with you. If he's 2 seconds a lap quicker than you then you don't need to spend money on the car...

jellison

12,803 posts

284 months

Wednesday 12th November 2008
quotequote all
teamHOLDENracing said:
The other thing I'd suggest would be to bung someone like Phil Keen a few quid to go testing with you. If he's 2 seconds a lap quicker than you then you don't need to spend money on the car...
No one want to find out there are not as fast as they think they are - have you done this Andy?

teamHOLDENracing

5,090 posts

274 months

Wednesday 12th November 2008
quotequote all
Not yet - but only because we've just completed the build and taken the car out once for a shakedown. Its absolutely the next item on the to do list. Why wouldn't you do it?

I'm fortunate to have access to a couple of seriously good engineers and I've taken their advice on using someone who is the best they have worked with for giving feedback on cars. Its a happy coincidence that I know him anyway.

Lets face it, I'm not the most experienced driver in the world and I've had 30 minutes of seat time in the whole of 2008. I can't drive a car and tell the difference between 0.5mm of toe in/out. But I know a man who can.

Worst case scenario you find out there are 'x' seconds a lap already in the car that you're not taking advantage of. No expensive upgrades required, you work on your driving instead. Or he helps you find a number of problems with the car that you weren't aware of. Or you find you are just as good as him. None of these are bad outcomes are they?

jellison

12,803 posts

284 months

Wednesday 12th November 2008
quotequote all
teamHOLDENracing said:
Not yet - but only because we've just completed the build and taken the car out once for a shakedown. Its absolutely the next item on the to do list. Why wouldn't you do it?

I'm fortunate to have access to a couple of seriously good engineers and I've taken their advice on using someone who is the best they have worked with for giving feedback on cars. Its a happy coincidence that I know him anyway.

Lets face it, I'm not the most experienced driver in the world and I've had 30 minutes of seat time in the whole of 2008. I can't drive a car and tell the difference between 0.5mm of toe in/out. But I know a man who can.

Worst case scenario you find out there are 'x' seconds a lap already in the car that you're not taking advantage of. No expensive upgrades required, you work on your driving instead. Or he helps you find a number of problems with the car that you weren't aware of. Or you find you are just as good as him. None of these are bad outcomes are they?
Good points. 30 min on 08 ouch - hope 09 goes well.

Is he the lad that works for RG?

teamHOLDENracing

5,090 posts

274 months

Wednesday 12th November 2008
quotequote all
Not anymore. He's a very, very talented driver.

I could have done some racing in 08 - after all I also had Lee Caroline's Tuscan - but decided I would focus 100% on getting the Sagaris finished. Hence no track time.

jellison

12,803 posts

284 months

Wednesday 12th November 2008
quotequote all
teamHOLDENracing said:
Not anymore. He's a very, very talented driver.

I could have done some racing in 08 - after all I also had Lee Caroline's Tuscan - but decided I would focus 100% on getting the Sagaris finished. Hence no track time.
Have you still got it now or moved it on. Loverly, wonder how many full house ones sitting in sheds (Phil J needs to get his one out!).

I did see the lad leave in a massive sideways lauch from a huge car event in Cobham a few years back in the RG Green Sag. Nice skills.

Mate now owns the car (obviously it had a new engine before he bought it as there ex-demo car!) - the one in their video ads (now has a special one off exhaust on it, all the way from the head to the back boxes - sounds MENTAL).