Have some LMT questions...

[jordan...]

ok, so i've been crunching numbers in the calculator. I've been using 51/20 as a benchmark gearing (have no idea what pinions to consider with this one):

Enter Front/Rear Differential Gear Ratio (?): UE 1/8 scale
Enter Transmission Gear Ratio: E-maxx 2nd gear
Enter Spur Gear tooth count (?): 51
Enter Pinion Gear tooth count: 20
Enter total battery voltage: 22.2v
Enter kv rating of brushless motor 1867 (Lehner 1950/7)
Enter tire diameter in inches: 5.8

Total Motor Speed (?):41447.4 RPM
Theoretical Vehicle Speed (?): 49.23 mph (79.09 km/h)

not too shabby!! but then i tried with 51/25 gearing:

Enter Front/Rear Differential Gear Ratio (?): UE 1/8 scale
Enter Transmission Gear Ratio: E-maxx 2nd gear
Enter Spur Gear tooth count (?): 51
Enter Pinion Gear tooth count: 25
Enter total battery voltage: 22.2v
Enter kv rating of brushless motor 1867 (Lehner 1950/7)
Enter tire diameter in inches: 5.8

Total Motor Speed (?):41447.4 RPM
Theoretical Vehicle Speed (?): 61.54 mph (98.86 km/h)

thats more like it with tyre ballooning it pushes the 'theoretical' speed way over 60

Is it weird that the motor rpm did not change with the change of the gearing? Would it be alright to run that gearing, no warnings came up on the calculator, but would it be harmful to the motor or ESC? (probably going to run a MMM). I'm guessing some cooling issues might be experienced, and maybe a total lack of bottom end

thanks alot
jordan