Hi everyone!

I am a double sided happy as a bit frustrated user of my Radwagon 4 bicycle purchased in 2022.
Since i am living in Belgium and saw in the same year the European branch of RadPower making a retreat, i am trying to get a hold on the idea to collect the essential electronic spare parts of RW4 to extend the lifespan of my bike when the supply will stop. This will likely happen in the near future when the last warranties will expire in Europe. Because of the massive work and reliability ( outside of some minor points with a battery problem ) it performed already, i found the idea to store some essentials compelling enough to buy from time to time achievable parts. So far I already detained throttle and rear wheel motor hub set already. Anything besides the mechanical parts that seem to be generic to be replaced. Is there any advice if i should continue to purchase definitely some parts from the manufacture RP itself? I had my eye on my last wish list adding a controller and display to be safe. I hope somebody can raise some enlighted answers what ether the idea itself is more sustainable than the bike itself or that i can keep working around the iron frame with generic gear from other companies.
Thank you for your help!!

I have a radwagon 4 for sale. This bike was purchased this year. It's practically new, I rode it once for a couple blocks to check it out. I want a fat tire cruiser or maybe mountain style electric bike and would trade for the right bike. I'm in the bay area California.

Hello, I have the same problem and in Germany as well.
 My Radwagon4 no longer has any thrust. The starting assistant does not work either. When I push the wheel backwards and activate the starting assist again and again, the wheel "brakes" because of the slight, jerky support.
Have you already found the problem or a workaround?

Hi everyone,
I bough my radwagon 5 in sept 2025, I've done 700km on it.
This week, I was riding with my kids and the electric assistance stop working. First, was still working, but no electric force was coming from pedaling. Then, the trottle also stoped working. The only way to get back the PAS was to turn off and turn on the power. I felt that when I braked the PAS was droping or stoping. At the end of the ride, I got a brake sensor error that appear for few sec.

I charged the battery, and the day after the PAS worked correctly for a 5 km. But then in the afternoon I experienced the same problem. I had to pedal very hard to get any force (100W) from the motor.

Anybody have had this problem ? Any idea what it could be ? Thanks!

Just got my Radster Trail a few weeks ago and love it. It replaces my 2018 RadCity. But, my Canadian Radster Trail motor cuts out at 32k (class 2). I miss the speed. My City could get up over 40kph. Is there a way to disable or hack the speed limiter? 

Thank you, crorris!  Your top link's product worked: https://www.amazon.com/dp/B07WNTFMCB?ref=ppx_yo2ov_dt_b_fed_asin_title It's a little loose but so far hasn't popped out while riding.  I used a cable tie to keep it handy per the photo.

  I like it.  Would have been really nice to see Belt drive rather then chain for the price.

how much better is this radster compared to my city 5 plus? also how does the radster road compare to a Velotric Discover 2? THanks

I have enjoyed this bike a lot for sure. I only changed the tires for Schwalbe E Marathon plus and changed the seatpost for a nice comfy ride...but now I want a new bike. I'm trying to decide between a Radster Road and a Velotric Discover 2. Anyone here has a first hand experience with either one?
thanks
E

Quote from: Ddaybc on April 17, 2022, 04:47:10 PMUnfortunately the wattage remained the same for a low effort as well as for a maximum effort

That's the nature of a cadence sensor vs a torque sensor.