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Hi ElevenAD. That particular torque sensor just became available on GBK last month and I did buy it, $119 with shipping. Up until last month (or late Oct.) the torque was not available anywhere. Anna at GBK actually ordered it for stock from Bafang after I and one or two others asked her if...

greenbikekit.com

In case anyone is looking for hard to find Ultra parts (like the torque sensor or the plastic side cover that hides the motor mount nuts and electrical connectors) a company called GBK (Green Bike KIt) has them and many other parts for the Ultra motor. You deal with a woman named Anna Lee who...

Here is an update on my torque sensor problem. In October I found a company "Green Bike Kit" (GBK), that said they would look into getting the torque sensors for the Bafang Ultra motor. In late Oct. they (Anna) got back to me and said they now have them. I ordered it and received it in early...

Hi bobgren. As BlackHand noted if the error code 21 indicates "speed sensor", that hopefully is your problem. If the little disc attached to your spokes moved out of position the speed sensor will not read your wheel turning, so check that first. Or the speed sensor itself could have gone bad...

Check out Tannus Armour for a different type of tire liner.

I have an Addmotor P7 550 rear hub (750W) and a m2s Ultra Fat mid drive. I got the rear hub bike first and the mid drive about seven months later in Sept. of 2018. Both bikes have the gear shift motor cut-off switch and throttles. I like the rear hub bike much better than the mid drive. The...

I did talk to m2s early last week and they said they were going to try to find some info on the problem I was having. At that time I was trying to determine if it was definitely the torque sensor or possibly the controller. Since then I have determined it is definitely the torque sensor. I...

I saw that. It would be helpful if I could find a torque sensor.

That is kind of what I have learned about the Ultra parts availability. My bike is the m2s Ultra Fat, 2 years old. I have to say I have never been happy with it's power (or lack there of). I compare this bike to my 750 watt rear hub bike, the rear hub Addmotor P7 550 is much peppier. Thanks...

Does anyone know where to buy a torque sensor for the Bafang Ultra motor. I cannot find one anywhere.

Does anyone have any idea where to get a torque sensor for the Bafang Ultra motor. I have searched everywhere and cannot find that particular part . My pedal assist suddenly quit on my 2 year old mid drive m2s Ultra Fat. The brake motor cut-off switches and shifter motor cut-off switch...

Sic Puppy, if you have not seen these yet you might check out Tannus Armour. They have what looks like a fantastic tire liner which is now available for fat tire bikes.

Congratulations Bobcat.

I am glad you are finding the problems. I put the Mr. Tuffy tire liners in and have not had a leak since. We have goatheads around here. I used Slime first and while that helped it is not as good as Mr. Tuffy since the liners actually keep things from getting to the tubes. There is a newer...

Hi Bobcat. If you have power from the battery (48 volts or whatever your battery is) you might also try to determine if you can read the 48 volts from the battery to the various components (for instance is 48 volts even getting to the motor, check it at the motor connector near the motor) also...

Hi Bobcat. You might try, if you have not already done so, checking all of the wiring at the controller and all of the connection points of the wires from the controller to the display and even ohm out the wiring to see if there is a break somewhere. As far as getting any satisfaction from...

Thanks for all your replies. Very good information. I may still get a drone (I am looking at the Mavic 2 Pro) but maybe will not fly it while I am riding. I live in a rural area so at least I can take it somewhere while on my bike, and that may be the extent of my drone and bike combination.

Has anyone attempted to use a drone while biking, like having the drone follow you (if it has that option). A special bracket would be required to hold the controller on the handlebar and it would not be very safe or practical to use a drone if there are people around, but out in the boonies or...

I have two of the Sena R1 helmets. My friend and I use them and they are excellent. The speaking sound is very good and if your want to listen to FM radio the sound is not bad, not great, but not too bad. The helmet receives phone calls and it is easy to hear the caller.