Sourcing heavy duty freewheel

[CuriousJojo100]

So I finally finished my full suspension cruiser build! By using the rear end from a mountain bike I now have the option of using a 3 piece crank. I want to use the frame as a Jackshaft but I can’t find a freewheel front crank. Does anyone have a link?

 

[Sidewinder Jerry]

Here's the strongest one out there. Then all you need is the adaptors for it.

E-Bike Freewheels – White Industries

www.whiteind.com

Maybe you want to try something like this.


View: https://youtu.be/tVweIvS81rg?si=vk_VOzkRbUr-DkBY

 

[cloakedvillain]

What about this? Freewheel crank on the original bottom bracket and a three piece has two multi chain ring set ups. That way the engine power never goes through the pawls of the freewheel on the crank.

The old shimano Front Freewheels came in two options, a one piece crank and a 3 piece crankset. The one piece crank ought to fit but you can order the correct cup and cone bearings if not because there are two old standards for one piece cranks: one had 24tpi, the other had 28tpi but both completely incompatible. If yoy end up going for a three piece crank you would need to purchase an adapter that presses into the bb shell like the original cup and cone except it has the correct threads.

https://www.ebay.com/itm/276757581965

Vintage Shimano FF SHIMANO Schwinn Crankset Crank 1978 | eBay

Vintage Shimano FF SHIMANO Schwinn Crankset Crank 1978. Condition is Used. Shipped with USPS Ground Advantage.

www.ebay.com

NOS New Vintage Schwinn Shimano FF System Sprocket Positron Suburban | eBay

New NOS never used Schwinn Shimano FF crank system. Positron freewheel sprocket. Dirty from being in storage for decades. Sold as is pictured.

www.ebay.com

Shun Alloy 104 PCD 4-Arm Freewheeling Cranks

We stock this for tandems (although there may well be other applications), this can only be used on tandems with hub gears and straight through drive, allows the rider (front or rear or both) to independently freewheel. Requires a very long bottom bracket, when fitted to a Thorn Raven Twin...

www.sjscycles.co.uk

https://internationalsurreyco.com/product/crank-double/

Proper gearing will get funny and really depends on your rear cogset and desired use. It looks like you are going for off road and hills but I just don't know.