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I went on my bike Q128C 201rpm/36V version with 48V battery on strong winds 2 weeks ago. Motor has no problem whatsoever to maintain a 30kph+ speed. With or without human assistance. Drains battery though.

tried it yesterday on flat terrain with one bridge ramp. On flat it cruises nicely at 35km/h. top was 37.9 (GPS) On the ramp there was no noticeable reduction in speed. On the GPS track it shows before the ramp 36 kph, on the ramp 34.7 kph. As the pas sensor does not work I used the throttle...

here it is. Actually pretty straightforward job. Only work other than just bolting on: spoking rear wheel. Shortening cables to fit frame. Making a bracket for the LCD Creating enough space for the pas sensor (which still doesn't work) frame is newly powder coated all new cables, brakepads...

would be the same as pedal back when on the left side and i tried that.

I'll check with bmsb. maybe a replacement controller and/or pas sensor will do the trick :)

tried back pedal and magnets outside... no succes.

disk is on the left side with the magnets facing towards sensor. Sensor (red plastic part) is only a few mm away from the magnets.

I finished putting together a q128c motor with a s09 sinewave controller and LCD3 display. Sofar I have the motor running on the throttle but it does not react at all to the pas sensor. Am I doing something wrong in the settingss? Like the C1 parameter for power assist sensor? This has all these...

This evening I took apart the mtb. Needs new shift and brake cables, chain, tires, brakepads. Frame goes to the powder coater tomorrow. I just realized that my vintage 6 speed Deore XT cassette is fixated with thread insite the smallest sprocket. The motor cassette hub does not have this thread...

aren't you guys metric yet? so about 39 kph then :)

After spending evenings and evenings of reading the internet I just ordered a Q128C, 201rpm, 36V and the 09bottle 48V, 11.4Ah with 20A sinewave controller kit from BMS battery. I hope this will give me the best balance of hillclimbing torque hills and flatland speed. I initially selected the...

I found this forum when looking for information about building a pedelec. The information on the internet is overwhelming :) Anyway, I have an old skool mtb I want to convert and the whole process is learning and building is probably as fun as riding the bike.