Short Stack Gearing/1:10 Touring cars
#2
It really varies from track to track, depending on size. Are you running a fan on the car? I haven't run 17.5 in a while but in USGT 21.5t at our local track I'm geared at 3.04 FDR.
#6
I would go down to 20-30 degrees on something like a 3.5-3.7 fdr.
If you are not adjusting timing along with gearing, you are leaving a lot left on the table.
#7
I been running a Mach 3 17.5 in TC. Started with 48* timing at around 4.0 gearing on a track that is about 78x40
Last edited by imprsme; 10-01-2016 at 04:43 PM.
#8
Key thing here is short stack which just loves RPM. Crank up the timing and see how low you can gear it. It makes all its power on the top end so you pretty much want to keep it there. If your buds are running 3.7 then I'd start around 4.5 and go down from there. The lower the gear the higher the RPM and the more power off the corners.
#10
FWIW when I've run 17.5 at Leisure with Trinity or Motiv motors (never had a Reedy) I was always in the low 3's which seems typical on that track. If they are running the full back straight I would think you would need to be in the 3.2 or lower range.
And out there you generally won't see any more heat in the motor when you gear it up like that because it's running where it want to be, not over revving.
And out there you generally won't see any more heat in the motor when you gear it up like that because it's running where it want to be, not over revving.