Hello all. I'm a new member. Just joined for this issue. I searched this thread (service and repair), but couldn't find anything similar. Maybe because I am mis-diagnosing the problem?

I have a Rad City 3 (2019). Great bike (heavy beast ). 1800 km. Lately, I've been having what I think are electrical problems. I've contacted Rad with the issue, but only bots have answered so far.

When I'm trying to bike  in  the power assist mode, I think the bike is trying to regenerate power into the battery. This leads to the pedals being intermittently slowed down, and then allowed to operate normally. which makes a very difficult ride. Sometimes the charging is seconds, other times dozens of seconds or even minutes. Good thing is the battery stays charged 

The regeneration is stopped if I turn the throttle. So now, whenever I want to bike, I have to keep the throttle engaged. it doesn't have to be much, but since it is on the same handlebar as the gear shifter it is annoying.

I don't know if this is a cable problem, or a controller problem, or perhaps a problem with the brake calipers themselves. I think the problem first occurred during a ride, right after braking. I was wondering if this was a known problem for any of you.

Thanks!

Gordon