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Thanks for the picture PedalUma. That's a great solution. I have pieces of rubber hose cut up and stuffed in there. A bit ugly it is. I'll take it apart (again) and grease it as you suggest. What grease do you recommend?

Well, I put the 34/42 front chain rings on the Tongsheng and after jury rigging the front derailleur I got it to reliably shift between the two chainrings. The bike is now within my acceptable range of performance, which ain't much from my experience with a 36v TSDZ2b! But don't she look...

No! You can change the rear sprocket, but the ratio inside the hub is fixed.

I have my son's Pace 500 sitting in my bike shed and would like to do the same thing to it, so let us know what works. I put a Rockshox Paragon on my Trek 7.2 that has a BBS02. Couldn't be happier except the $250. You would want to remove your existing fork and measure the steer tube diameters...

Yay! Sometimes I build something elegant. Don't know if the boat cradle counts, but at 30 years it has stood the test of time (outside of replacing some rotten wood and rusted screws.)

250 watts maximum power? Maybe for a race of slow ebikes, but my 500 watt Grin hub motor pulls 1500 watts peak power. There's nominal power, and there's peak power. If a 250 watt rated motor could only pull 250 watts that would truly suck.

Sure! Here's a couple of pictures. The bunks are 1x6's, everything else is 1x or 2x4's. All held together with deck screws.

Oh, I have no idea other than it was advertised for the motor, a 34/42. I await its arrival, and will post pictures of the install (though it may be lost at sea for all I know.) I like the speed on the flats with the stock 42, but the motor needs a lower range to go up the steeper hills that I...

Thanks for the suggestions EMGX. I did watch the Park Tool video, and also followed the manf. install instructions. The shifter does its full travel and the hub's ratio changes through out, but for me I need a lower "gear". I have a double sprocket chainwheel ordered, and that should fix my...

Version 3. I put handle bars with more rise on them. Went on my longest bike ride with it to date and the bike handles really well. The rear roller brake is suboptimal at the moment. The Nuvinci 360 hub is great, though is doesn't have enough gear ratio. I absolutely need that 2 sprocket...

Epic bike story from the mechanical side of things. Great that you got it all together without disaster. :)

Off hand, the gear profile. Someone already mentioned a problem. The pictures of your motor's gears doesn't look good. The black goo looks to be made of iron and grease.

Maybe see if it's magnetic goo.

I put the other electric stuff on the bike today. Below is the throttle test: Ready to roll, take one: On the first ride the connectors pulled out of battery power. Damned suspension! Second try: I got a brief surge of motor power on my first attempt. I fixed the power supply problem...

I was just talking to a friend last night who has worked on building an repairing electric vehicles for years. I said we should go into business and offer repairs for all those inexpensive DTC ebikes. Seems to me there will be a lot of demand for it. He wouldn't bite, saying it's not worth his...

More like an afternoon, but I took some me time and put a motor on a bike that I have been piecing together from free stuff: The bike, a Rocky Mountain Fanatik, came without wheels, chain, or rear derailleur. The rear wheel is now an unused Nuvinci 360 hub in a new eyeleted 24 inch rim (I did...

I would play the pickleball but I broke my right collar bone 30+ years ago. It's still broken, the cause a 20+ mph bicycle wreck. I could try lefty, but that would be a steep learning curve.

I put a 500w direct-drive rear hub motor on the bike below. It will pull almost 1500w, and do 30 plus mph on the throttle. It's torque sensing so pedaling as an ebike feels like riding a regular bike. On steep hills you do need some leg power to keep speed. I bought the wheel, controller, and...

There is a podcast from someone with some expertise with batteries. He said that with temperature changes a battery "breathes". What he means is air is pushed out of the battery case when the temperature rises and is sucked in when the ambient temperature falls. So the battery will tend to...

Not obese, but i wouldn't build an ebike without a throttle. It's a very useful tool to have at hand.