Build a wheel hub with freewheel gears on both sides?

[Alaskavan]

This hub fit on my trike with 7 gears on the right side freewheel and a single sprocket on the left side freewheel. I didn't have room for the brake:

http://www.bicycle-engines.com/freewheel-sprocket-axle-wbrake-p-297.html

 

[ibdennyak]

This hub fit on my trike with 7 gears on the right side freewheel and a single sprocket on the left side freewheel. I didn't have room for the brake:

http://www.bicycle-engines.com/freewheel-sprocket-axle-wbrake-p-297.html

Just curious Van, how has the hub and wheel held up long term.....ie bearings etc?

 

[StreetPlanes]

Bicycle mechanics please help:

Is it possible to build a wheel hub with freewheel gears/sprockets on both sides using readily available parts?

Ideally the gears would be 44t on the left and 15t on the right, and both would freewheel when coasting.

I have heard of a hub called a fixed gear flip flop hub, which has a freewheel on one side and a fixed gear on the other. Maybe one of these hubs could be built with a freewheel gear on each side, both freewheeling in the same direction?

Staton Inc has the very item you're looking for in stock. I've bought and built several using their dual freewheel hubs. Not cheap but good products.

 

[Alaskavan]

Hi Denny. I have burned up one set of bearings. Keep in mind that I often ride 30+ miles at a stretch at 40mph+. I switched the bad bearings for the set in the spare hub I bought. I also bought a set of SKF bearings for the next time I need to replace them.
Van

 

[happycheapskate]

Does using a dual freewheel hub with the 36 or 44 motor cog, allow for very consistent chain tension? I would think this should be a major improvement over the rag joint, esp if using no tensioner.

I put half links in my chain recently and didn't quite put enough chain tension on, and the chain skipped off this morning. I am glad I installed a few washers on the left side of the axle, which gave the chain a place to fall instead of tangling with the spokes or cog. I rode it 30 miles today and all is well, so I guess I have to just run the chain as reasonably tight as possible considering the run out of the cog rotation.

 

[ElementX]

This hub fit on my trike with 7 gears on the right side freewheel and a single sprocket on the left side freewheel. I didn't have room for the brake:

http://www.bicycle-engines.com/freewheel-sprocket-axle-wbrake-p-297.html

Alaskavan, did you have any issues threading that 7 speed onto the hub?

I just received this hub and it doesn't appear that any of my multi-speed freewheels will screw onto the right drive side. They thread-on maybe 2 turns, then wont go any further by hand.

 

[happycheapskate]

Element X. Most freewheels sold in USA have the same thread, but there are a few different threadings. Its possible you have an incompatible thread, but more likely that the threads are dirty on one of the items, or that the threads are cut poorly on the hub. Check with a bike shop, but I bet you can grease it and put it on there. (it won't seize/corrode and will be easier to remove some day when you need to work on your hub/re lace the wheel)

 

[Goat Herder]

Fine threads being the case get some brake clean and an old tooth brush. Clean it good. Just a tiny bit of buggering on those fine treads can ruin your day! Do grease it up good! A bike shop might be a good Idea!

I have buggered fine threads as a mechanic its a night mare..

 

[ElementX]

Thanks for the responses guys. I will give it another try with your suggestions.

At the moment, I am thinking that the threads on the hub are possibly too deep (or is it that they're too tall?) because I've tried 4 different freewheels on it. 1 was brand new, and all 4 fit fine on other hubs.

 

[loquin]

You sure it's a left-hand thread?