Correct pinion?
I am building an AE B4.1 kit. I know the RTR typically runs a 81T spur with 21T pinion gear.
The Castle motor I am going to use recommends from 12-18T pinion with a 87T spur gear.
When I look at the Team Associated and A Main Hobbies sites, this smaller pinion is not available. Why would I not want to run a similar setup as the RTR B4.1? I know the motors are a bit different (my kit will have a 4600kv motor while the RTR has a 3800kv).
I am thinking a 21 or 22T pinion with the 81T should be a good place to start...?
If not buying the Team Associated brand pinion, what other manufacturers can I use? I see by looking at other pictures of other makes, the teeth appear different.