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I think the stock display USB port is rated for 0.5 amps (at 5 volts). You may have overdrawn it. Unplug anything from the USB port, then try completely discharging the bike by removing the battery and then pressing the power-on button (display might flash for a moment), then remount the...

Because it would get stolen within a week?

I see what looks like a thumb throttle on the right handlebar, and they claim electric-only riding. The range numbers are more than a tad optimistic for a 48V 12.2AHr battery, 90-110km? The photo of the display near the bottom of the page clearly is powered by a 36v battery. Included electric...

Since bolton mentions the controller being successfully used to drive a radcity stock DD motor, I would assume it can be programmed for another DD motor. The parameters you would have to figure out are P1 and P2, as described here: There's also C2, if a sine wave controller is necessary. The...

We're re-creating the soviet experience: they pretend to pay us and we pretend to work. The bright young MBAs who turn honest jobs into gig work collect their bonus and promotion and depart the scene before the chickens come to roost. Regardless, as a biker who is frequently near fedex and UPS...

Good call. The rad city rear dropout width is 135mm, the radrover (geared hub motor) is 170mm. Source, radpower website (for each bike scroll down to "geometry" section).

Most likely a short. Drawing down voltage via a short circuit causes all sorts of weird things to happen in unrelated places. It's the devil to figure out in cars.

Last bits of info. These numbers come from when my battery was new, 800 miles or less. My daily commute is 5 miles each way on pavement with one 400 foot up and down hill each way. On PAS 4 or 5 I got the advertised 25 mile minimum. I don't use PAS 4 enough to break that out. PAS 3, got 35...

Cold temperature is a factor, too. I see less range when the temps are below 50 degrees, but haven't done that enough to quantify it. Got no info on high temp (80+ degrees) usage, save the professor from Nova Scotia's advice that discharging the battery at higher temps tends to shorten the...

Another cheaper and easier option might be to find someone in the US who has already done the bolton controller upgrade, and buy their stock used radpower controller (and likely display) from them*. Given all the people saying that the radpower bafang 750w geared hub motor is really an...

The watt display is telling you your instantaneous power consumption. 1 watt is 1 amp of electricity at 1 volt. So on your nominally 48v battery, if you're drawing 350 watts (PAS 3) you're pulling 7.3 amps from the battery. If you ride nonstop at PAS3 for an hour, you will drain your battery by...

Try jiggling the electrical wire coming out of each brake lever. After that, try disconnecting and reconnecting the big connector plug just in front of the head tube (take your battery off first, and power up the bike to discharge any remaining voltage in the system). When reconnecting, do it in...

My guess is that the new controller might somewhat work with the stock radpower display, but would be limited to the numbers sent by that display, which is capped at 40 kph and 750 w, and has radpower's unmodifiable PAS power settings, which kind of defeats the purpose of doing the upgrade. The...

It doesn't work that way. When you the consumer with health insurance get significantly injured on your $1200 ebike and incur 10s to 100s of thousands in medical bills, your health insurer's loss recovery specialists are going to look to get some of that back. From someone, they don't care who...

Test ride it gingerly at first. Spin the wheels, do you see any wobble? Eyeball the tires, see any bulges? Ride the bike, test the brakes together. Then test them independently at speed. Do the pedals and cranks feel straight? (then shift in and out of every gear and see if they go...

Radrover with the bolton ebikes controller&display upgrade. If you're intending to throttle frequently, also spring for the bolton thumb throttle upgrade, since the stock twist throttle is fatigueing to the wrist after a few minutes unless you're applying full power all the time. Please note...

Be advised that parts are in extremely short supply, and we don't know when that will change. You can buy from the best company in the world, but if they have to choose between selling you a part or sacrificing a $4500 complete bike sale, well... You can improve your odds of getting parts and...

Bike weight is probably your biggest consideration here. While you don't think about it when maneuvering your 25-30lb unpowered bike through doorways, elevators, and in and out of cars (or onto racks), when it's a 69lb ebike you feel it. I'm 5'10" and in reasonable shape, and the tightness in...

I frequently get chased down by road bikers when I'm doing 23-25 mph on my commute home for the day (on 300w). As a part time road biker myself, I have respect for folks who have the energy and motivation near the end of their ride to sustain that speed, to put the evil fatty ebike behind them...

In my experience (referring to 2019 stock radrover) the motor doesn't try to restrict speed, it just shuts off at 24.7 mph and then you experience the usual motor magnet drag. I've hit 31 mph on a hill with the bike powered on at PAS3. On the flat I could get up to 28 mph before the pedal...