t16turbotone
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| posted on 20/4/10 at 12:19 PM |
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still suffering with wheelspin...tyres??
hi folks, still suffering with wheelspin prblems, ime using proxes at the moment, are these tryes any good? will i benefit from 888s? What impact do
you think rear suspension set up will have on this problem? thanx for any help
tony
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mookaloid
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| posted on 20/4/10 at 12:22 PM |
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proxes are decent tyres. R888's are better in the dry but worse in the wet.
I would suggest a little more control with the right foot 
"That thing you're thinking - it wont be that."
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deezee
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| posted on 20/4/10 at 12:24 PM |
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Proxies are ultimately cheap tyres with a good grip pattern and standard compound rubber. They just happen to look flash. Try some Eagle F1s.
Also if you put an Eagle F1 next to a Toyo T1R you'll actually notice an Eagle F1 has something like 8mm more road contact on its width!
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TimC
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| posted on 20/4/10 at 12:27 PM |
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Have you tried softening off the back end?
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mookaloid
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| posted on 20/4/10 at 12:27 PM |
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Are you using a live axle or independent rear?
"That thing you're thinking - it wont be that."
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t16turbotone
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| posted on 20/4/10 at 12:31 PM |
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thanx for the replies guys, i have tried softning back end with little or no difference, de dion axle with sierra lsd diff,
i am using lt77 gearbox and i wonder if gearing is to high as well
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russbost
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| posted on 20/4/10 at 12:35 PM |
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engines at the wrong end! What can you expect with such a fundamental design flaw!!!
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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mookaloid
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| posted on 20/4/10 at 12:36 PM |
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a taller diff might help. if you are using a 3.92 ratio, changing to a 3.62 might help. I can't remember how to work it out but it's to do
with the torque transmitted to the wheels.
Someone will be along with the theory of that, but you can prove it with a balsa model and elastic bands if I recall
"That thing you're thinking - it wont be that."
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t16turbotone
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| posted on 20/4/10 at 12:41 PM |
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ime using a 3.62 at te moment, was thinking about 3.38. I was just looking at axle ratio on rover sd1 2000 (where a version of my engine and lt77 was
fitted) and its 3.14??
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40inches
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| posted on 20/4/10 at 01:24 PM |
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What tyre pressures are you running? How old are the tyres?
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coozer
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| posted on 20/4/10 at 01:32 PM |
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I have Yoko Prada's on mine and run them at 14psi. (Going up to 16 soon)
Wheelspin is not a problem most of the time just hard fast acceleration.
Had a scary moment a while ago with a Sierra Cosworth alongside... red line in first, no problem, quick shift to second and it lit up like the
proverbial christmas tree and had me snaking up the road more than Sid after being prodded with a Sid prod!
1972 V8 Jago
1980 Z750
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t16turbotone
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| posted on 20/4/10 at 01:37 PM |
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tyres are 1000 miles old, and ime runing 16psi
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mookaloid
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| posted on 20/4/10 at 04:15 PM |
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quote:
Originally posted by t16turbotone
ime using a 3.62 at te moment, was thinking about 3.38. I was just looking at axle ratio on rover sd1 2000 (where a version of my engine and lt77 was
fitted) and its 3.14??
That might be a clue 
"That thing you're thinking - it wont be that."
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flak monkey
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| posted on 20/4/10 at 04:22 PM |
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What width rears are you running?
I will be changing to 225 or 235 rears shortly, just for the added straight line grip. The fronts will be staying at 185 or 195 though.
The T1-R shouldnt have any more grip than the crappy Nakangs I have fitted as IIRC the treadwear rating is about the same and the tread pattern not
all that dissimilar. The only benefit may be the softer side walls.
There are other options than the R888 though - Kumho do some pretty good tyres at a little less ££.
Sera
http://www.motosera.com
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t16turbotone
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| posted on 20/4/10 at 05:22 PM |
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running 195/r15/50 all round at the moment, maybe 215 are in order
thanx
tony
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Frosty
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| posted on 20/4/10 at 05:56 PM |
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You must remember that most of the tyre grip is generated by weight being on top of it, and not the width of the tyre.
You might well find that moving up in tyre width will not help at all with straight line grip.
You will get to a point where there is too much torque for such a light car, and so your right foot is the best way of controlling it all.
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Xtreme Kermit
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| posted on 20/4/10 at 07:49 PM |
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My new boots
Toyo R1R - supposed to be near as good as 888 in the dry and much better in the wet.
All I know is I'm taking it easy at the mo and they still knock the socks off my old Yoko A539s
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