TonyD.

iTrader: (41)

change to the spool and it will shorten up the rear so the wheels fit inside of the body.

gwc

iTrader: (1)

Doing that will also drastically change the handling characteristics.

TonyD.

iTrader: (41)

yes it will make it handle better in and out of corners.

gwc

iTrader: (1)

Wider Track Width: Both front and rear. The wider the car, the less lateral weight transfer and the less traction rolling you will have. In High bite conditions, you want to run wider. An added benefit of the wider rear is that it will put more leverage on the side springs making them act softer.

TonyD.

iTrader: (41)

trust me you will get better cornering with a spool.

rcracersb

iTrader: (67)

Hey guys, I’ve been racing gt12 on rubber for awhile. We run 1s,usgt motor,sjt, fixed gearing... anyways we’re looking at splitting the class by doing a fixed gear class and open gear class and using the fixed gearing more like a sportsman/ newer drivers.. I’m looking for a good place to start gearing wise. Thanks

gwc

iTrader: (1)

That depends mostly on the track & motor, we run on a black CRC carpet medium size track 21.5 motor rollout of 82.7 to 86.4
Tire dia. (41) x pinion (45-47) x 3.14 / 70 (spur) = rollout (your performance may vary) 😅

old_dude

iTrader: (1)

We use that same USGT spec motor on the rubber tires. This will sound crazy but my current gearing is 63 pinion, 67 spur. The track is 90 x 40.

gwc

iTrader: (1)

121.0 rollout = mind blown🤯

BullFrog

iTrader: (4)

come to the Fla. with open motors, open gears and foam tires. .We'll be glad to help you on the gearing for our outdoor and one indoor (carpet Black)

rcracersb

iTrader: (67)

im in black carpet with usgt motor. Track is like 40x60. One long straight rest is pretty technical but fast

gwc

iTrader: (1)

Lived in FL from 1959 to 1973 it was a great place to grow up back then.

gwc

iTrader: (1)

Friulimotosport

Is that ball diff or spool?

dangdude

Hi, what is a fixed gearing class? Does everyone need to run the same tooth pinion & spur?