Ridstar Q20 Aftermarket S866 LCD 

This is a great video! I like the Q20 design, and it's cool to know there's options for the display.

Many thanks

I got the same contoller because mine quit working like yours. Put new controller on bike drives good but speedo doesn't work and have e10 code. All settings set to same settings you put on your new controller any ideas why same bike as yours

Which brand of s866 did you buy?

With P07 what should i set it to with my 48V arrow bike 500W

Thanks for the great review. Do you happen to know if the s866 will work with the dual motor q20 pro?

I just got it to fix mine how long was your cord mine doesn't look long anuff

Does it have a 52v option?

I got the same display for my ridstar after my display went out too, but the pin colors didn’t line up. It’s the same display in the description you posted. Also, I had to change the wiring to the proper order, then I’m stuck with a e-10 error, lights work, but throttle does nothing. I can’t access p10-p20 either

hello, my back tire is flat, can you make a video demonstrating how to fix flat tires on the q20?

Hi. When I hold down the minus button the wheel moves. But it caps the speed at 6km/h. Is there anyway to adjust this

@sagarevstore4524 when im riding at 30km/h for example ... if i stop pushing throtle for a couple of seconds- like when you see a car geting close from ahead temporarily-and after a second or two start to push it again the vehicle jerks badly ....you push the throtle but for the vehicle its like you pushe onto the brakes ..jerks and you have to decrease alot of speed to get acceleration agaon

have a question about the s866 lcd is it rain proof and i have a 52 volt battery should i use 48 or 60 volt setting.

Do you think there would be a problem running a 52volt with the s866?

does this display come in color screen, not just black and white? thanks in advance

What is maximum speed with this controller?

Hi Sir. My q20 is dead after 20 miles.... I think the controller is fried? I guess it is under warrsnty but seems like huge hastle to send back, etc... would you recommend trying to ordet a new controller and swap? Thanks a lot🎉

What's the name of this electric bike ?