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That's right. The 175 is actually the motor that Tongxin recommends for a 24" wheel, so may do a bit more than 15mph in a 26" and, as you say, would climb well but have low top speed in a smaller wheel. FYI - these are Tongxin's range of motor speeds and suggested wheel sizes, with the UK/EU...

Are Powerpoles waterproof enough for using in an exposed position like on the forks? I use them already for connecting battery to motor, and I have some in the garage, so that would be an easy option. Frank

Thanks John and John, I'll look into Polevolt; I don't suppose you (John-Aldby) know what the Cytronex one is called by any chance? Frank

Those numbers are right, and, assuming you use a half-decent bike as a starting point, you would get a bike which was lighter and has better performance and riding qualities than most whole packages available. Someone really on a tight budget could, of course, shave costs a bit further...

I want to fit a connector to enable easy removal of the motor wheel on my Tongxin bike. The sensorless Tongxin motor makes this an easy thing to do, as there are only three, rather than eight, wires. There are a few options, but I wondered what others might have used, what worked well and...

I second you on those two, Beeps. One more I would add is forum member JohnP, who has become the first reliable and reasonably priced UK seller of Tongxin motors, which I am sure are currently occupying the spare time of quite a few forum members who are making them up into bikes!

Looks very good, and sounds like you are getting good performance from it! I think you are wise to leave the controller in the open. Mine and others experience has shown that the main risk is over-heating, not getting wet. They do get quite warm and need as much air flow as possible to stop...

I'm not sure where the current state of knowledge has reached regarding motors for folders but, in case it's not been mentioned before, Tongxin appears to have made a narrow motor for folder forks. I got a Christmas email from Diana Lin at Tongxin which mentioned that "we have developed new...

I agree with your point about 'glazed' pads. When I replaced mine after a only a thousand miles or so, they were a long way from worn out, but weren't working effectively. The surface was very shiny and, well, glazed! The bike hadn't been used much since August which may have been a factor...

Any decent brake cables will do the job. I'm sure those would be fine, or you could probably get cheaper ones if you wanted. Main thing that you need is some proper cable cutters to make a clean cut of the cables. The only other pitfall would be to get gear cables by mistake, as brake cable...

I've no doubt the Agattu is the better all-round package (including price), but the Gazelle came out first, when there were no other crank-drive bikes around - other than second hand Lafrees which were being bidded up to £900 on eBay! Hence I believe it, not the Agattu, did the most to provide...

I'd go for the Cytronex. The first successful application of the Tongxin motor to a mass-produced bike, with no reliability issues noted. Also the best-looking electric bike, and a bike which targets a new segment - fit cyclists who want a bit of help on hills. In second place would be the...

Well done - I'm sure you've got a great bike. Sounds like you're getting good performance. Look forward to seeing the pictures. What's the issue with V-brakes? I've been wondering if it would be straightforward to replace cantis with Vs. Sounds like your stem might be seized up. Worst...

They are expensive. I'm sure that manufacturers get bulk discounts but I suspect they still pay a fair bit for them because they are a good product and there is only really one competitor, Campagnolo. I wouldn't be surprised to find out that Shimano made more money than all of the major...

You need to get a second hand Raleigh Arena from eBay! I got one when I was about 13 and have fond memories of it. I see them now and again and think about buying one purely for sentimental reasons - they do come up. I don't think that is the best option though. It depends what type of...

Mine are both about a year old. I'm planning to sell the Wisper and will then just have my Tongxin kit bike. That kit is in a bike which is just over 7 years old. It's a decent quality bike so I would expect it to last for another 20 years or more, as long as I look after it! Of course...

Bob, You seem to be putting together a formidable fleet of electric bikes; I look forward to seeing more of this one being revealed!

I've just replaced the pads on my Wisper front disc brake. I have the original Promax front brake. As others have posted, it's not the best brake around but I've always found it to be effective, when properly adjusted. It's the only bike I've ever had with a disc brake so I needed to do a...

Yes, interesting! Those compound roundabouts always cause a bit of a laugh. It's interesting that there is more than one legal route through them. I'm only glad that the people who designed them didn't have responsibiltiy for the big London gyratories such as Hammersmith, Hanger lane or Hyde...

If you go through Jeremy's long thread on his Tongxin kit you'll see he made a wonderful looking enclosure for his Ping battery on his recumbent.