[Shotimes] R-1 bf goodrich

[Donald Mallinson]

Don,

I have tried R-1 autocross tires, and they are just not 
designed to have superb traction in a straight line!  May be 
better than cheap H rated winter tires, but not by a lot.

You need to get a dedicated drag radial, and decide which 
size if any will work.  Most tires available, that I have 
seen, will be either way too big, or too small.

Probably better to go bigger (tall) than shorter.

I have found that launch rpm of about 2500 works better for 
me.  A little bog has been better than going up in smoke.

Best launch is to slip the clutch at the limit of traction 
to keep the engine from bogging, but then you need to own a 
clutch factory and have a few mechanics on retainer so you 
don't get worn out from replacing the clutch every other event!

Remember Bobbym Brannon using slicks?  And busting trannys!

Don Mallinson

don d wrote:

> I am drag racing my Sr 72 and tried some burn outs at 3000 rpms and no traction at all.
> 
> I have kuhmo autocross tires on it now but do have a set of 205 16 bf goodrich R1 auto cross tires on slicers.
> 
> I am thinking of taking the R1's off the rims and reversing the tread.
> 
> I have heard that alot of 1/4 milers do this with the R1's.
> 
> Like to get the list's input.
> 
> Also ... on a side note ... The Sr 72 weighs about 2816 now.
> 
> was right at 2900 pds. What i did is replaced the steel hood with a cinncy cowl hood. Removed the windsheild wiper motor, wiper arms and assembly.
> 
> I have gutted the rear doors by cutting the inner skin out .. removing all tracks ... and putting in plexiglass.
> 
> Also took the small rear triangle windows out and replaced with plexiglass.
> 
> I am going to probably remove the rear window too with plexigalss .. not sure  but if i do, that will get me below 2800 pds.
> 
> That would put me around 2790 +/-
> 
> Now .. what else to remove ????? :)
> 
> dond
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