Originally Posted by j.d.roost
We had a discussion at the track last night about tires/wheels.Big problem is 103 rubber is spendy,and 104 rubber does not work very good on a cold ungrippy (is that a word
) outdoor track.We ran foams for the big Jackson race last night and while I qualified good my 103 was total junk for the main (after grip came up). Just about un-drivable, too much steering and was hooking bad. Now, I think some practice time will get me adjusted to different track conditions, I also think taking the"foam tire dance" out of the equation will make everyone more consistent from week to week.
Also,trying to find a "spec" rubber tire for the class is just about impossible.
The f104 might actually be the odd man out assuming
the soon to be released top f1 car is going to be using 109/103 style tires/wheels/offset.
I know tamiya was going for scale looks (and the cars look fantastic) but it
sort of tossed a wrench into the mix of the f1 world.
Going foam tire shopping..
For me the key to gettin the F103 to work (on foams) is no longer about the rear end.
Only so much can be done til you gotta say WTF.
I've fought this car from day 1 trying to get the rear to stick.
I've used all the tricks that came from the top F1 racers around, yeh, So Cal has just a few F1 champs loitering around not to mention this forum and the guys lending tips thru posts and pms (thanks, you know who you are!).
My car was WAY better thru their help and ALMOST pretty good somtimes.
Medium foams in the front are still too grippy most of the time and that is the firmest Tamiya foam I've found.
1 pair of the kit front foams that I was led to thru this forum didn't steer at all, as I was told it wouldn't.
Also tried TRG firm front foams with the same results.
Felt that I needed something in between medium and firm compounds.
I did the superglue dots on the Tamiya mediums and it worked great at Tamiya Aliso Viejo and at WCRC, (yeh, I'm in So Cal.) UNTIL the superglue wore off, then it was back to loose/junk again.
It wore on the outside front wheel (right front on our left hand sweeper and opposite...).
The car was still very good in the turns where the tire with the glue was the outside wheel.
I cut tiny slits in the tire and put glue drops "into" the tire so the glue wouldn't wear off the surface.
This is my favorite set of front tires, yielding great results last weekend at WCRC (I did have the advantage tho, I was running the F103 w/foams while others had F103 w/rubber or F104 w/foam or rubber).
It has settled down my car at Tamiya's track as well.
Forgot to mention, the tire wear on the front foams is almost non existant, no coning of the outside edges.
Also made a pair with a little less glue for the rare occasion that it might need just a touch more steering.
So, where is the compound in between the Tamiya medium and TRG hard?