Question about freewheels, cogs and flip flop hubs

[laura*]

Isn't the freewheel aspect pretty much covered by the flip-flop hub itself? I kind of assumed it was built in.

If the hub was like a modern freehub, then yes the freewheel aspect would be built in. However, that's not the case.

Both sides of the flip flop hub accept thread-on parts - the fixed gear and reverse threaded lock ring on one side, and a freewheel on the other.

These days, there isn't much choice when it comes to single speed freewheels. You probably have to take whatever brand your LBS has. Be aware that there are at least two thread standards: the regular one, and a smaller one that is generally for BMX bikes.

I just looked at a QBP (major bike parts distributor) catalog. You have three brands to choose from: ACS, Dicta, and Shimano. With ACS and Shimano, you have a choice of a brown finish or a chromed finish, and of compatibility with single speed or multi speed chains. Dicta's come in brown and use 3/32" multi speed chain.

[westtexas]

If the hub was like a modern freehub, then yes the freewheel aspect would be built in. However, that's not the case.

Well, the wheels are brand new, and therefore should be a modern freehub, I am hoping. Only the frame is from the 1970s.

I'm just afraid to stick the cog on the free side and go for a spin and end up crashing, haha.

[laura*]

Well, the wheels are brand new, and therefore should be a modern freehub, I am hoping.

Some online research implies that your wheelset uses relabeled "Formula" brand hubs. Their flip flop hubs have threads at both ends and no built in freewheel mechanism. A track (fixie) cog and a lockring go on the end with a small step in the threading. A single speed freewheel goes on the other end.

(I'd've posted a link, but couldn't find a definitive link to Formula products!)

It isn't a big deal 'cause single speed freewheels are cheap!

[westtexas]

Thanks Laura! I went to the LBS yesterday and had the guy explain it to me too in very small words with lots of drawings and his own fixie. After fiddling around with the cog at home, I realized it may be a "flip flop" hub but it's not got a built in freewheel. But you are right, it's a cheap part, so no biggy. Went ahead and ordered all the other stuff I needed too while I was at it. Hopefully I can get this thing together soon enough!

Thanks a million