Can you put a freewheel on a track hub?
Use the freewheel side if your hub has it. If it is truly fixed/fixed it will have stepped threads for a lockring both sides. In that case, a typical track cog is about 8mm thick whereas a freewheel is about twice that, so only half your threads would be engaged. You may just want a new wheel designed for freewheelin.
Can you convert a freewheel to single speed?
The better way to convert a cassette Freehub ® is to remove the 7-, 8- or 9-speed cassette and replace it with a single sprocket. You will also need a bunch of spacer washers to hold the single sprocket in place. You can often get a suitable number of spacers by taking apart a couple of discarded, worn-out cassettes.
Can you put a fixed cog on a freewheel hub?
This issue has been discussed extensively…but the short form is that some people do it even though it could be potentially unsafe. Those who do put the fixed cog on freewheel threads would be advised to use loctite on the threads.
Can a 5 speed hub be converted to a 7 speed freewheel?
5-Speed to 6- or 7-Speed Hubs originally intended for 5-speed freewheels can be converted to use 6- or 7-speed freewheels. You will generally need to add a few spacer washers to the right side of the axle, building it up far enought that the cone locknut can reach the frame dropout through the wider freewheel body.
What kind of sprocket does a Shimano freewheel use?
Modern 5-and 6-speed freewheels have a 5.5 mm sprocket spacing and work with Shimano 5-and 6-speed indexed shifters. 7-speed freewheels — and old SunTour Ultra freewheels — have a 5 mm sprocket-to-sprocket spacing that works with Shimano 7- or 8-speed click shifters and rear derailers — see table of sprocket spacings.
When did freewheels move to 8 speed clusters?
In the early 1990s, the industry moved to 8-speed clusters with 130 mm spacing. 8-speeds were available in both freewheel and cassette hubs. As with the move from 4- to 5-speed, and from 5-speed to 6-speed, this required adding spacers to the right-hand end of the axle to keep the chain from rubbing on the frame.
How do you check the thread pitch on a freewheel?
You may check the thread pitch of a freewheel by threading an ISO left bottom-bracket cup into it (not a right cup, which is left-threaded). The cup will go in easily if the thread pitch is the same — but do have a freewheel extractor tool handy so you can unscrew the cup.