I just picked up a set of Speedline mags with Hoosier slicks for a stellar price. I know that you are supposed to run some sort of spacer at least on the rears so that the tire clears the frame. I test fitted them today and though it is tight there seems to be enough room on the inside between the frame and the tire, but I guess time and a little track duty will tell.
My question is the fact that I seem to have enough room without spacers due to the fact that I am running Eliseparts alloy belled rotors? How much thicker are the alloy bells compaired to the stock bits?
Anyone out there know?
As I understand it, in theory you’re meant to run 3mm spacers to correct the Speedline’s off-set (to the std Rimstocks) and stop the slick’s inside rubbing against the chassis (obviously a bad thing). However, some have pointed out that this may push the wheel off the hub’s spigot (also a bad thing). Although there are no reported failures that I know of due to that, or rear tyre blow-outs come to think of it.
So you may want to take the wheels off after your first hard track session and see if there’s any rubbing.
Hope that helps. Anybody else got thoughts?
Ian
Thank’s Ian,
That’s basicaly what I was going to do. I’m actually going to the track today
What I was really wondering was how much the alloy bells are helping me in respect to obtaining the proper offset. If I have a set of spacers made the additional thickness of the alloy bells will have to be taken into consideration. The problem is I don’t know the thickness of the original one piece rotors.
Yep, just go without and check for rubbing at the end of the first session.
Mine were close to the handbrake (parking brake) cable shroud when on the jacks, but moved clear when back on the ground.
Alex.
The problem is I don’t know the thickness of the original one piece rotors.
if you can wait a few hours, I’ll check an old set when I get home…
Yep, just go without and check for rubbing at the end of the first session.
would something like engineers blue help in showing any contact - i think there could be some light contact without any real evidence showing, especially if your chassis is clean!
OK measurements are:
Standard S1 Lotus one-piece discs are 11mm
Eliseparts S1 ali belled are 12mm - made up of flange on disc of 5.4mm and flange on bell 6.6mm
So Eliseparts give an extra 1.0mm spacing over standard
Thanks Steve,
I hammered her hard on Tuesday with a field of 25 cars (all S2’s except one other S1).
No rubbing and the other S1 and I were lapping the field all day!
Might have been all the hair care products that those blokes haul around in their boots.