Quote:
Originally Posted by lutach
I think I read somewhere people were having trouble with it when it rolls backwards it would cog a bit to go forward again.
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This is somewhat inherent in the sensorless strategy - I can assure you that the Tekin controller suffers significantly less cogging than most - particularly with a neu motor, which many other controllers will hardly run or run poorly IMO.
I have the R1Pro in the new emaxx here - only a little testing so far, but it handles the 7xl motor geared for low-mid 40mph pretty easily so far. It is too cold outside to make any real life temperature assessments, and I haven't been through all the programming settings/results yet, but so far it is a nice controller with a small footprint that works as smooth as any other sensorless controller on the market - smoother than most in fact. The current limit feature alone puts it in a class all its own as well, by allowing you to tame the low end power a bit (without current limit, the emaxx almost did a complete back flip from a rolling start - accident on my part! - with full current limit, it will wheelie over from a standstill and keeps the front end down once it is moving - still accerates like mad, though - just tames it enough to keep the front end mostly on the ground. I am excited to get more testing done on these, and the 1/8 version of this controller should be superb. Tekin is putting sensor capability on their brushless controllers at the moment - this will be beneficial for high rollout applications (4 cell on road, for example, where any sensorless system would have a similar struggle on startup), and will be the best way to run a Novak motor. I wouldn't hesitate to suggest the R1Pro for anyone looking to get one - the small footprint and high current carrying capacity (36 high quality FETS vs. 18 or 24 in many others) make this controller ideal for many applications. :)
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