Jackk-08 Posted May 6, 2009 Report Share Posted May 6, 2009 I want to change my rear wheel set up because I have a cassette setup and i want a single speed setup. I tried getting the cassette off but whoever put it on the wheel before I bought it didnt put it on with 40nM and is quite hard to get off so I've decided to buy a new back wheel setup but I have aquestion:What is the difference between a fixed and a free hub?If you have a fixed hub do you need a front freewheel whereas a free hub you can have a normal front sprocket is that how it works?Any other advice you have about this change I would be happy to hear Thank you Quote Link to comment Share on other sites More sharing options...
psycholist Posted May 6, 2009 Report Share Posted May 6, 2009 (edited) A 'fixed' type hub just has threads for a sprocket or a freewheel to screw onto on the side of the hub, so it should be very cheap and simple. For track bikes with a fixed gear where the sprocket is loaded backwards to slow down, there should be a smaller diameter thread for a lockring to stop the sprocket loosening. With a front freewheel or a rear freewheel for trials use the hub will never be loaded that way, so you just need the standard thread. If you want a front freewheel get a threaded fixed sprocket and screw it onto the hub, if you want a rear freewheel, screw a freewheel on instead. Rear freewheels will force you to use a bigger front sprocket to get the right gear, but it does mean you can use Middleburn cranks (Which have never failed on me unlike every other crank I've used) - I'd recommend a 22:18 ratio (Assuming a 26" wheel bike) if you're going rear freewheel or an 18:15 ratio if you're running the freewheel on the front (The freewheel is an 18 tooth in both cases)...As for getting the old cassette off, just put more torque on the lockring and it'll unscrew... Edited May 6, 2009 by psycholist Quote Link to comment Share on other sites More sharing options...
TTian Posted May 6, 2009 Report Share Posted May 6, 2009 hi, if u have a freewheel with BB, then u certainly dont need a free rear hub. (technically you bike wouldnt move at al if u had both free ) and vice versa.usually u put fixed rear hub on a mod.hope and echo hubs are recommended. Quote Link to comment Share on other sites More sharing options...
psycholist Posted May 6, 2009 Report Share Posted May 6, 2009 I wouldn't go near any Echo rear hub with a freewheel mechanism - A friend of mine has killed two of them in the past year riding it once a week... If you're after a fixed rear hub, I've been running one of these Echo hubs for a year and a half and it's still flawless: http://www.tartybikes.co.uk/product.php?pr...;category_id=21 - It also solves the problem of having to fit a separate tensioner if you're running vertical dropouts. Quote Link to comment Share on other sites More sharing options...
Jackk-08 Posted May 6, 2009 Author Report Share Posted May 6, 2009 I was thinking about that one. Thanks Quote Link to comment Share on other sites More sharing options...
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