P-DUB

I can assure you that the temp ratings by tire #'s are well off. With TakeOff and RP's you must look at them as compound #'s with lowest # being soft.

Here in Florida we see track temps in average of 120 to 150deg and CS27's and RP36's work really good

rayhuang

iTrader: (5)

hey all,

Its been a lng time since I ran rubber tires. So I got a TA05 and ran it on rubber tires on ozite tonight. Very lo grip night beause of a new layout and low turnout on sedans too. I must say I struggled to find adequate steering and i think traction compound played a HUGE roll n that as I chnaged tires, springs, ride height, camber links and always with pretty much the same results. All I had for traction compounds was TQ red (HORRIBLE), Pargaon FXII-still not good and finally I tried Paragon ground effects. The ebst results were with Pargon GE, but still hardly locked in. High speed steering wasnt bad-it was the high speed into 180s deg corners where car was SO lazy with no rotation, but in very tight corners-car was loose!!! So both pushing and snap oversteer. I could deal with the oversteer somewhat with better throttle control and a more open line.

Anyone sugggest the best traction additive for carpet racing for starters.
The fast lap in stock sedan foam tires was a 14.4 and i ran a 16.3 as my best-but I ran the low 16's pretty consistently in the Main-where-as the 14.4 fast lap oon fomas faded to low 15s by mid to late race. So maybe I wasnt too far out to lunch???

OH-I also ran Tamiya F430 body-not a Mazda 6 or Ride type bodies.
Thanks,
Ray

AdrianM

iTrader: (4)

What tires Ray?

rayhuang

iTrader: (5)

Every tire had no air gap and firm nserts (Yok firm or HPI Green).

Best balanced combo: CS32 front and yok 138g back (Scuffed frm running twice on concrete).

Worst-but ran on TQ red:
Yok 138g front and back. new.

Pushy in high speeed, but very loose low speed:
Tamiya type A's.

I ran the CS32 and yok 138g the most with all three types of traction compound.

Nexus

iTrader: (42)

Ray...can't give great advice but I can say that at IRP the rubber tire class is only 1 sec slower then foams.

On average the fastest guys are about 1 sec off.....1.5 on average.

Just run CS27 specs tire class and be done :P

AdrianM

iTrader: (4)

Ray - The lack of air gap and hard inserts are killing you. Back in the day before foams took over in the US we would run Sorex 28R fronts and 24R rears with Yok firm thin inserts. That would yeild tons of air gap and a very fast tire. However...it would only be good for ~3 runs before the rubber got so tacky the car would start rolling over.

I would say Take Off RP30GL front and rear would be better. They have good air gap, the rubber is more acted upon by Paragon GFX so the traction is really good but they dont seem to have the built up tackyness problem of Sorex and Pit tires.

g12314

iTrader: (6)

Ray,

From your post, you mentioned LOW grip ozite.

I would start with CS27's, and potentially go to CS22's if grip is really low (or something similar from the other tire makers)

Jimmy

rayhuang

iTrader: (5)

Thank you everyone. I thought that the issue was tires and traction compound because I made signicant changes to the car and the car never felt any different!! That told me that I was beating my head on a wall.

Shane Reinink

iTrader: (96)

Ray - our old carpet was very low traction and we were always searching for grip. What worked the best was cs-22's or even 20's from Pit Shimizo or Sorex work best, all the way around (i also ran hpi med or soft inserts), also the paragon ge still worked the best imo. Your tire selection in my opinion was killing you as you were running to hard a compound with to firm of inserts. hope this helps.

Essnowyt

rayhuang - If you were running a Tamiya F430 body I would start there. that body is a look and go fast in the real world. However, our touring cars are under completely different types of stress. I would suggest you try a real touring car body first. The nose of each real touring car body is shaped better for front down force. Most importantly you need the rear wing from a real touring car body for the rear down force. With the conditions you talk about, low traction ozite, a high down force body is needed. Try a Mazda 6 or a Stratus 3.0 AP. Remember the F430 is a replica of a car that goes 180+mph. Our little touring cars go like 30. Never even close to speeds that would call for low down force.
Just something else to think about.
Snowy.

Charlie O

Are RP30's the same compound/temp/adhesion as take off 27's

vabroom

Do any of you guys balance your tires. Is it worth the trouble?

Our cars may only be going 30 mph by multiply that by 10 and its 300 scale mph! I don't know if this any factor at all.

josh69162

iTrader: (3)

So other than the temp ratings you guys gave (which seem 100% subjective...), does Sorex have a website with temp ratings?
-Josh

trf racer

the way i see it,wether running indoors or out,numbers on tyres cannot b related to track temp.
1bc track surface,if surface really abrasive,ur not gonna run something like cs22 even if the track is 10 degrees c!
2,track surface is always constantly changing outdoors.

in the uk,we have a cool track no more then 35 degrees c.so we use cs22 all the time.
if i was racing in the hot wether like u in the usa,id just use a cs27 or rp30.
on carpet,if no control tyre,id use a cs22 with jb yellow thin inserts on pro line wheels,best combo.

rayhuang

iTrader: (5)

Hello,

A new question for the rubber tire dummy!!

Whats an equivalent insert to the one that comes in the CS27 handout tire?

Also-I have some HPI green and orange inserts-but they seem to filll the rims/tires with no airgap. Whats an insert like the green, but thinner? I am running Tamiya dish rims and Taliya type a med narrow tires.

Thanks,
Ray