Recent content by drsolly

I like the lightness, I like the torque in low. I'm in low gear about 95% of the time, because I'm riding over rough ground and wouldn't go much over 10 mph anyway. And because I'm geocaching, I'm stopping every few hundred meters. The lightness is a plus because it's easier to lift over...

I'm rooting for XiongDa. It's my favourite motor, right now, and I'd like the company to succeed.

In low gear, 12s is giving me 12 mph

I've tried red led voltmeters, yellow and green. The red is most visible in sunlight, but in bright sunlight, I can't read it. But then I found these...

In low gear, it's slightly less torque than a 500w motor (but only slightly), and in high gear it's slightly less speed (but only slightly). My use of the bike doesn't need speed, going over rough ground I'm very happy with 10 mph (and this will do 12). On tarmac, if I'm heading back to the car...

A Haro 26 inch folder, front and back suspension

I took the bike out on a rough ride today; about 10 miles over very rough terrain, and lots of stopping and starting. I was in low gear the whole day, except for a short time when I was on tarmac. The autoshift worked fine then. I think it shifts up at about 11mph, down at about 8. Maybe someone...

My experience of this is that sometimes the autoshift works nicely, sometimes it hunts. I'm not too bothered, because I've been expecting to do manual shifting anyway. I'm planning to take the bike out tomorrow for some rough riding, I'll see how that feels. I've also seen the lockup (can't...

I ride mostly on grass (and bramble, and thistle, and hawthorn) and I don't get punctures. Here's why: http://blog.drsolly.com/2014/03/puncture-resistance.html I carry a puncture repair kit, which includes a spare inner tube. It makes me feel more secure :-) I too always replace inner tubes...

20a at 36v is 720w, so that's about the same as my 15a at 50v I'm aware of the possibility of damaging the motor. But A) I have a temperature sensor stuck to it, and in my run yesterday, that reached 36C B) I'm geocaching. That means short runs of maybe 300 to 500 meters, interlaced with...

Yes, I can and do. But the Xiongda controller is limited to 15 amps, and I'd like to try running it with a bit more. The fact that I'm likely to not use the autoshifter, means that any controller that lets the bike go full speed in reverse, would suit the motor. I'd rather not modify the shunt...

I took the bike out for a test run. It's powered by 12s of Lipo. The summary of my testing, is that it's the bike I plan to take out when I next go out geocaching. Which means I'm happy with it. In low gear, the top speed was 12mph, in top gear it was 20 on the level. That's pretty good for a...

I've laced mine into a 26 inch wheel, 1-cross, 213mm spokes. Truing the wheel (well, somewhat true. True enough.) wasn't hard. I've done a couple of blog posts on this: http://blog.drsolly.com/2014/08/rebuilding-bike2.html http://blog.drsolly.com/2014/08/finishing-off-bike2.html The weight of...

I just did this using a screw jack.

Another good one: https://pbs.twimg.com/media/BujcB_zIcAEmsbv.png