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BrianG · 03.26.2010, 03:23 PM

Like was said, the kv is way too low for 5s; only ~13000rpm. That setup would work if you were geared for around 10-15mph, but to get 35mph, you probably have a really high rollout ratio (geared tall) and the ESC is having a hard time to get the motor to spin fast enough to get a good rpm reading. Also, you are no doubt pulling quite a bit of current on start due to the tall gearing. You either need a higher kv motor, or run a different ESC and 10s (and then gear down to keep your 35mph speed).

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BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	03.26.2010, 03:23 PM Like was said, the kv is way too low for 5s; only ~13000rpm. That setup would work if you were geared for around 10-15mph, but to get 35mph, you probably have a really high rollout ratio (geared tall) and the ESC is having a hard time to get the motor to spin fast enough to get a good rpm reading. Also, you are no doubt pulling quite a bit of current on start due to the tall gearing. You either need a higher kv motor, or run a different ESC and 10s (and then gear down to keep your 35mph speed).