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Since my knee isn't well enough to do any long rides I spent some time installing the Qiroll on my old steel frame bike that has a lot of room for easy installation on the seatstays. This 4"/10cm self closing door hinge works excellently well. Even better than the self closing gate hinge that I...

Instead of a star nut I've used a compression plug on an aluminum steerer tube. Easy to install and some other potential advantages over a star nut.

16g wire soldered on the tiny MR30 connector posts, it's a tight fit.

Bike with Qiroll that I'm hoping to do an overnight trip with in a few days. Bold talk given that I'm just starting to walk without a cane and still having significant knee pain. A man has to dream.

I hope that you can get this latest problem sorted out and Qiroll gives you good product support. Maybe the tiny motor and bearings aren't adequate for demands placed on them, your extensive short and long term experience seems to be indicating that might be the case. I'd be more tempted to...

Knee bad biking, worse walking. There are some steep trails here, some can be strenuous going up, painful down. Did several a couple weeks ago with family visiting, was fine untill a couple days after they left then it hit me.

I'm not aware of a performance difference but I've been mostly riding with only the default "electronic clutch" setting rather than the two higher settings actuated with the button control. There is a decent boost with only electronic clutch and I don't even have to pedal at low speed with that...

The stock battery to motor wire is 24" 18g with 3 separate wires which can be cumbersome so I soldered up my own with thicker 16g 3 conductor cable.

Without the spring hinge a "clutch" to retract the motor wouldn't work. I might still do that with the spring hinge on the bike it was on previously with the Qiroll located beneath the chainstays - which is the only place it will fit on that bike, with or without using a spring hinge.

Qiroll has come through for you in the past, keep us updated. Here's my Qiroll on its current bike. I like this convenient location on the seatstays best but not enough room for the spring hinge that I was hoping to use. Belt sander friction layer still holding up and not slipping on the...

Thanks for posting the images. Disappointing how poorly the controller enclosure is sealed other than the potting. Is the burned out appearing divot a capacitor location? Let us know what Qiroll's response is.

Here's the Qiroll with the spring hinge on a different bike with Tannus airless tires. It seems to work well so far. If I keep it on this bike I'll use this to retract the motor up off of the tire.

Sorry to hear that you can't send it back to Qiroll for inspection/repair. I'm interested in what you do to diagnose and hopefully repair it, keep us posted (with now 83,000 thread views I'm sure it isn't only me who'd like to know).

I hope not but it sounds like it might be an internal electrical fault. If that's the case the motor unit doesn't appear to be serviceable but you'll have to get advice from Qiroll to know for sure. No consolation I'm sure, but the service you got from the motor still seems impressive given...

I put it on my old '80s vintage mountain bike with Continental ride tour tires. The spring hinge allows the motor to be in contact with the tire while providing constant pressure even with some runout that this tire has. I'll come up with something to retract the motor when not in use. This...

Glad that you received what you ordered. It looks like Qiroll switch went to USB micro rather than your previous Pro with the magnetic connection. So I assume that you weren't provided another S1 switch as Jason had promised and the S1 switch with the magnetic connector interface has now been...

You can buy 1" x 180" roll for $13.73 on Amazon if you don't need that 60' roll. FWIW I tried it riding on mostly wet paved paths and the grit layer quickly came off leaving it smooth and result in slipping. Maybe I didn't use it with the motor pressing hard enough on the tire but I thought I...

It also seems to work as well on the inside of the seat stays.

I couldn't quite figure out what kinhsang fabricated up but I like the idea of spring loading the Qiroll instead of fixed tension as stock. Gboost makes a friction drive with spring tension which you can see on their website. From what I can see on the product image the tension spring doesn't...

I'm not smart enough to figure out exactly what you did to make the spring compress the Qiroll against the tire. It looks like the spring hinge pushes the plastic conduit pipe against the roller thereby pushing the roller against the tire (and requiring the roller fixing screws be loosened to...