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Still getting regular use out of these, really appreciate them! I notice that the "rollout" on the nitro RC calculator doesn't seem to be returning a value, would it be possible to implement that?

Thanks again for making these, I use them regularly! I have an idea for another electric calculator: theoretical acceleration. Given the motor's KV rating, saturation current, and the vehicle's weight, you could calculate the maximum theoretical acceleration an RC should be capable of. You'd...

Transmission ratio is redundant in this case, that's what you're entering with the pinion/spur values. Some vehicles (like the Revo I believe) have an additional gearbox between the clutch/spur pair and the pinion/diff gear pair. You can use the values you entered above with a transmission ratio...

The calculator assumes perfect conditions - that the motor isn't over-geared, that the battery voltage won't sag below 3.7V, etc, and it just works out how fast the wheels would turn. Weight, torque, etc, doesn't need to be simulated to determine theoretical max speed, just the max RPM the...

I think may have misunderstood "ballooning diameter" - it works now at least. Thanks for adding it!

Nice! I think it may need a minor tweak; I'm getting 75mph from my setup which should read 50mph: 32,500 rpm, 23/39 transmission, 13/38 differential, 65mm tires For a 1.7 transmission x 2.92 differential = 4.96 final drive ratio which are correctly assessed, but then the rollout reads 2.43...

Very nice! I've been using this calculator which is similar but makes you figure out the final drive ratio yourself. You could extend it to cover nitros just by adding to the instructions: "Motor KV / RPM for nitros" and: "Battery voltage: set to 1 for nitro engines"