Clawz114 Posted August 25, 2006 Report Share Posted August 25, 2006 Ok, i know you can buy bmx hubs which allow you to fakie (ride backwards) without pedaling backwards...i dont know how this works but anyway. Here is what i was thinking.On a bike which has a front freewheel and a fixed rear when you coast along without pedaling the chain will move around and the cranks will stay still right. When you fakie, the cranks will pedal backwards.On a bike with a rear cassette the same principal will happen except it will be on the rear instead of the front obviously.I was thinking, what happens if you put a front freewheel on a bike which has a cassette hub? Surely this means that the rear cassette and the front freewheel will both lock when you move forwards but when you move backwards the rear cassette will spin freely and so will the front freewheel allowing you to fakie without pedaling?Anyone know if this works? My mate has a front freewheel so im going to give it a go soon and see if it works.Clawz Quote Link to comment Share on other sites More sharing options...
Mark W Posted August 25, 2006 Report Share Posted August 25, 2006 Nope, it'll be just the same. One will engage basically turning it into a fixed sprocket, then the other will be moved to engage, I think? Not to mention you'll be pretty much raping the engagement of both, seeing as you'll have to kick, engage the freewheel, then take up the slack in the chain and then engage the freehub, which would feel really, really shit. Quote Link to comment Share on other sites More sharing options...
PaRtZ Posted August 26, 2006 Report Share Posted August 26, 2006 Nope, it'll be just the same. One will engage basically turning it into a fixed sprocket, then the other will be moved to engage, I think? Not to mention you'll be pretty much raping the engagement of both, seeing as you'll have to kick, engage the freewheel, then take up the slack in the chain and then engage the freehub, which would feel really, really shit.I know his is completely off topic, but Why has your welsh dragon birdie got a hat on? I've never seen any welsh flag where the dragon has got a hat on I know you get alot of stick for your avatar mark but you know..... Quote Link to comment Share on other sites More sharing options...
clockwork Posted August 26, 2006 Report Share Posted August 26, 2006 dunno what ur on about really... but you can do this thing (if you have a cassette) where instead of running all 8 gears you can take out two cogs and replace them with spacers. then when you want to fakie you change down or up into the space (kinda neutral). I have never tried this myself and it is probably easier said than done. Quote Link to comment Share on other sites More sharing options...
poopipe Posted August 26, 2006 Report Share Posted August 26, 2006 erit won't work - it'll do exactly what mark said. Neither the cassette nor the freewheel will allow you to coast backwards and unless you're extremely lucky it'll take twice as long to get an engagement.if you really want to do it you'll have to get yourself a freecoaster - personally i wouldn't advise it on a trials bike.I had one on my bmx years ago and found that forward engagements can a little unpredictable (ie. it misses cos it hasn't locked itself in time) and every once in a while it'll get upset and turn into a back pedal brake.both these things are ok (ish) on a bmx but you don't want either happening just as you're setting up for a gap really. Quote Link to comment Share on other sites More sharing options...
adamtrials Posted August 26, 2006 Report Share Posted August 26, 2006 Incidentally does anyone have a link explaining how freecoaster hubs work?I saw some guy riding backwards without pedalling on a bmx at the bike show years ago,it's intrigued me how they work since, I guess it's some kind of centrifugal system? Quote Link to comment Share on other sites More sharing options...
poopipe Posted August 26, 2006 Report Share Posted August 26, 2006 old school suntour freecoasterer, this is about as good as i've been able to find.basically there's a big lump of metal that moves up and down a threaded bit in the hub. this big lump locks against the hubshell when pedalling forward and rolls back into the dead space in the hub when coasting or rolling backwards. the hub on that particular page is originally intended to be a back pedal brake (coasterbrake) but by putting a washer the between the lump and the non drive side you can stop the hub locking up when you back pedal and get yourself a freecoaster.I assume they all still work pretty much the same way these days - with the notable exception of these ones , which are expensive. Quote Link to comment Share on other sites More sharing options...
Michael Hardman Posted August 26, 2006 Report Share Posted August 26, 2006 You have to set enough slack ofr the hub to disengage and that means you loss engagement when it comes to pedalling again.Freecoasters don't have a place in trials, you'll die using one. Quote Link to comment Share on other sites More sharing options...
adamtrials Posted August 26, 2006 Report Share Posted August 26, 2006 old school suntour freecoasterer, this is about as good as i've been able to find.Thanks for that, didnt expect them to work like that. Quote Link to comment Share on other sites More sharing options...
Mark W Posted August 26, 2006 Report Share Posted August 26, 2006 I know his is completely off topic, but Why has your welsh dragon birdie got a hat on? I've never seen any welsh flag where the dragon has got a hat on I know you get alot of stick for your avatar mark but you know..... 'cos it's the Artistbirdie.gif that I've pretty much always had in some way, shape or form, but tinted red and placed one the backdrop of the Welsh flag. If you notice, the Welsh dragon also doesn't have: A beak, a pallette, etc. I think there may well be something on the G-sport site about it, but if not there's this thread on the House of 'tards, aka Bikeguide.org. Quote Link to comment Share on other sites More sharing options...
eskimo Posted August 26, 2006 Report Share Posted August 26, 2006 Have a look at the new(ish) KHE street freecoaster. Same priciple but slightly different working. Also has a setting where you can change the engagement on it. Quote Link to comment Share on other sites More sharing options...
nickyw Posted August 26, 2006 Report Share Posted August 26, 2006 Didnt danny use one in the febuary brain-child film's newcastle ride vid?I really thought is he useing a freecoaster on his stock at the time. Quote Link to comment Share on other sites More sharing options...
Mark W Posted August 26, 2006 Report Share Posted August 26, 2006 You can alter the slack on all of them, it's just that the spring mechanism on the KHE one actually...well...works, I guess? It's supposed to be more reliable than the spring 'n' shim mechanism of the others, apparently. Quote Link to comment Share on other sites More sharing options...
Onza Kieron Posted August 27, 2006 Report Share Posted August 27, 2006 Didnt danny use one in the febuary brain-child film's newcastle ride vid?I really thought is he useing a freecoaster on his stock at the time. I noticed that, I dunno though, where he does a 180 off that lil wall and goes backwards then just stops pedalling, maybe snapped chain? or setup so he doesnt need a chain at that peticular point for the recording. Quote Link to comment Share on other sites More sharing options...
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