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Welcome to the forum. Can't find weight for the first one. The second one weighs 21kgs incl battery so if you want it to be truly portable (carry it any distance) that is a big no no. My Brompton (36v both of those are 24v) weighs 13kgs plus 2kgs for the bag with battery. For me that would be...

To be honest if I could only have one it would be the eBompton. Not quite as smooth and comfortable as the Moulton, but better for all round use and portability. Regards Jerry

As I said earlier in my post the original chain pusher, cable and control lever on the handle bars can be removed as its no single speed as you say. Modifying the single speed chain tensioner will be a challenge. I will re-emphasie though, that you are going to need some form of anti rotation...

No problem. I would not be interested in importing and selling these motors given that others have tried and never made it worth while in terms of returns. These motors have to be treated with care and if abused in any way fail. Sometimes they just fail for the heck of it anyway! I am...

Yes that is the one I had on my three speed hub before I went to the two speed derailleur. Its made for one and three speed Bromptons. Here they are at Brilliant Bikes The real challenge though is going to be modifying it to go over the larger drive motor shaft and the larger wheel nut...

I am pretty sure he won't be able to fold the bike without the chain coming off if he does not have the chain tensioner fitted. Even the single speed has one though it is different than the derailleur chain pusher on which the rollers can move laterally. Come kind of anti rotation washer/torque...

Wurly, I didn't need any rings I was just wondering if you had ever fixed one. I did a long post on here with pictures from a guy in Australia or New Zealand I forget which. Tongxin sent him a couple of rings and a special tool to fit them. Tongxin have offered to send me a few spare rings...

Damn, so now you're giving them away free :p Regards Jerry

So do you fix the broken rings, have parts etc ? I have tended to have a few spare Tongxins for backup but have not yet had one fail (fingers crossed) ? I can disassemble them and had to when I first got a couple and they were for the roller brake fitting. Had to modify the case and shorten...

Guys it pretty easy to order these yourself. I don't really want to order more than two at a time. I have provided all the details in the thread where I showed you that these people are reliable. Just email sales@h9.com.cn. The person I deal with is called Cici. Very helpful and provides a...

Yes that's the beauty of the 83mm Tongxin. Regards Jerry

I tried all the tricks, washing liquid, talcolm powder, cable ties etc etc. The smaller wheel size compounds the problem over standard size wheels. I bet its hard to fit them to CR18 20" rims but on the 16" ones its almost impossible. Can be done obviously, but requires a lot of technique. The...

Yes that is expensive. You could have four Tongxin kits for that albeit with out batteries. PS Got that wrong nearer seven or eight. And as NRG says Duty/VAT is always an unknown. I am ordering another two Tongxin kits which will bring my spares to 5 :D Quite a few but I may end up building...

Yes NRG one of the reasons I changed rims. However like I said with practice it does get easier. Despite that its easy to damage the wire bead when getting the tire off. This then leads to more punctures caused by the damaged/exposed wire bead rubbing the tube. Big Apples are even bigger and...

Yes (all tires are hard to fit) see my link I just added to my post above. All Brompton rims are 28h. I got some blank ones which a friend redrilled with 36h for me. Look on youtube there are some links about getting tires onto rims. Its ALL about technique! Often the smaller the rim (i.e...

When you first try to fit any tire to those rims its a nightmare! The smaller the rim the harder it is. Time and lots of practice is required. I actually changed and use Brompton rims that are drilled with 36 holes now as its much easier to fit tires to them. The rim well is very shallow on the...

Ade, What were you doing when it broke ? Are they steel or Aluminum ? It is often necessary to use washers to space the forks. The gap can be close. I think My Brompton is about a business card gap (1-2mm) between the fork side and the motor housing. Here is another build that uses...

I don't understand that surely the joining piece is not that thick ? I will go check the clearance on mine. Kojak tires may give you more clearance as they are thinner, not as much puncture protection though. I have been running Kojaks on mine for 10 months and had one puncture on my daily...

Agreed the big advantage in a DIY battery is you know how it was built and therefore as you say it becomes serviceable. Obviously not for the average consumer but a big advantage if you are doing conversions yourself for family and friends. I still wonder how many people are carrying...

Do you have a picture of the part I am sure you could source one from somewhere ? Welcome to the forum BTW. Regards Jerry