jammincrtjames

iTrader: (2)

Guys,

What gearing options are you guys running at the local tracks? Nexus, PT, Coopers etc. I want to buy some pinions and or spurs. I see a lot of you guys with lots of gearing choices. Can you recommend a few options?

Thanks.

Im running an Mi2

Rfury

iTrader: (6)

Brushed or Brushless?

jammincrtjames

iTrader: (2)

novak 13.5 brushless

Rfury

iTrader: (6)

Most of us run between 4.5 and 5.0 final drive ratio.

I run 4.9 most of the time.

jammincrtjames

iTrader: (2)

no offense fury. that means nothing to me. Im an idoit with drive ratio etc. I have never had a TC car before. Can you elaborate? What size spur and pinion do you run. How do I calculate drive ratio? I gotta learn this somehow.

HD-F1

iTrader: (22)

I don't know what spur ya got but I would pick up something in the 116 to 128 range and pinions from 25 to 35 ( 64 pitch). That should give you a good gear selection.

HD-F1

iTrader: (22)

To figure out final drive....... spur/pinion then X internal gear ratio


125/25=5
5X2.0=10

Final drive= 10.0

Rfury

iTrader: (6)

No problem.

Final drive is calculated like so... Spur/pinion x car's transmission ratio.

I don't know the numbers for your car.

I run a 96 spur and 47 pinion.

ShaunMac

The MI2 has two transmission ratios to choose from

1.8 with 20T layshaft pulleys(low)

2.1 with 17T layshaft pulleys(high)

Depending on which pulley you choose you will need different pinion and spur to achieve the same FDR. You might ask around in the Schumacher thread and see what people are running with the 13.5.

HD-F1

iTrader: (22)

Thats why we keep you around big mac

Rfury

iTrader: (6)

Chris Cooper (Budman)said he ran between a 4.8 and a 5.0. I have no idea what pullies he was using though.

waltuo

iTrader: (2)

With the 20T layshaft, you could get a 4.9 FDR with a 104T spur, and a 38T pinion. With the 17T layout, you could get a 4.9 FDR with a 102T spur and a 43T pinion.

waltuo

iTrader: (2)

Also, your rollout using the above mentioned gearing would be 40.1761 with the 20T layshaft and 39.7319 with the 17T layshaft.

waltuo

iTrader: (2)

NOTE: Those rollout measurements are in mm.

HD-F1

iTrader: (22)

And BAM! Just like that the great gear delima is solved. Gotta love the georgia boyz.