So it shouldn't be a problem running a regular old 150mm wheels then? I was looking at this HD set up cause I had planned on getting a ported cylinder and high compression head kit for the 60cc 2 stroke and doing some hot rodding on this engine since this is a weekend toy and not a commuter for me. I was a little concerned regular bicycle hubs might not handle the power or the speeds they would be pushed to.
These hubs, threaded for freewheel cluster are not a good option for a shift kit build (IMHO and I have not tried it and don't even have a running bike yet!), and here's why:
because they are freewheel hubs.
They are not freehubs. There is no cassette.
There is a freewheel cluster or single freewheel sprocket.
A multi-speed freewheel cluster
overhangs the bearings that the hub runs on. It isn't supported by its own pair of bearings as a freehub is. That means if you run the multi-speed cluster there's all this weird freaky bending force on the freewheel itself, trying to break it to bits,
and a horrible increased force on the main bearings and hub axle which causes bearing failures and bent axles.
It's a horrible system and it's why Shimano techs invented their version of the cassette freehub forty years ago for (puny earthling) human powered bicycles and it's still in use today.
These "HD" wheels are not for shift kit use (IMHO and all that)
Cassette hubs started with only two bearings, some still have only two bearings but the right hand bearing is out near the dropout, making for much better reliability, and now
they can have four or even five sealed bearings along the length of the axle. I would choose something with at least four bearings.
Why is this "HD" hub a huge step backwards in technology?
And what's with the narrow no-name rims anyway?
Oops seems Frankenstein got there first, while I was off doing other things and editing my post to make it more opinionated haha.