Thanks for the info Pcomm. No one had a brought their JS-2 at the last Danville meetup in March. Troy said he was going to bring his up so he could show me a thing or two with it. I'll probably get the motors from ETO, or Bob. Anyway I did my speed runs to figure out where the JS-2 sits as far as scalle speed. just for kicks I also did it with my Taigen M4A3 to see how close it was to scale speed out of the box as well.

On Brets (TheBennyB) advise i went to the following link which breaks it down very nicely to figure out scale speed.
http://www.bayareatankers.org/

Here are the results of the five speed runs

JS-2
10.93
10.65
11.48
11.21
10.98
With an average speed of 11.05. Now the motors have not been broken in yet. Also all runs were done on a 2s 2200 compact lipo.

Based on the calculation on the referenced site my stock JS-2 clocks in at roughly 24-25MPH scale speed with the actual speed of a JS-2 (according to wikipedia anyway) as 23MPH. This would put the tank within a 2MPH variance.

Now once the motors are broken in I expect to see a change in this number. Also since i was doing the time trial myself there is room for error on the times listed.

The Taigen Sherman ran on the following times.
12.70
12.46
12.33
12.20
12.08
Average time of 12.35. The actual speed (again from wikipedia) is 21MPH. With a 12.35 the Taigen Sherman has a scale speed of 21-22MPH.

So all in all the JS-2 runs a little fast for scale speed but it could just have been a number of variables that caused me to reach a speed of 24-25MPH.

If you think I messed up on this somehow please let m know.

Bill