Umm probably not since I think free coasters only come in single speed only but I'm not sure. (and they're probably bmx size too)
If you really wanted to have a "free coaster", you can set up a neutral gear, basically taking out like 3 gears in your hub and putting in a spacer, so when you're riding backwards, switch in to neutral and you won't have to pedal. I'd place it near the smallest cog or right beside it.
typically you need to buy a new hub for this and I am pretty sure they are all single speed.
I know I have an article on this though somewhere.. I am pretty sure it was in MBA in 04 or 05, but I flipped through the tables of contents quickly and couldn't find it.
Basically the idea was to take off your smallest cog, and replace it with a spacer. Than put a slightly bigger washer on the outside to keep the chain from falling off. I have no idea how they got it to lock on. But you can than shift into that gear when you want to free coaster something, and shift out when your done. They said it works good, and some pro was using that method than, but it sounds sketchy to me.
Umm probably not since I think free coasters only come in single speed only but I'm not sure. (and they're probably bmx size too)
If you really wanted to have a "free coaster", you can set up a neutral gear, basically taking out like 3 gears in your hub and putting in a spacer, so when you're riding backwards, switch in to neutral and you won't have to pedal. I'd place it near the smallest cog or right beside it.
thats pretty much what i was going to say, buy some plastic pipe (I've never done it, but I;ve seen it done, maybe some PVC would be cheap if you could find the right diameter ) and replace the lowest cogs on your cassette so you can shift down into neutral, cheapest upgrade ever, just a little work cutting pipe ect, and if you don't like it, just put the cogs back on.
you can convert old 3speed sturmey archer aw hubs to turn them into freecoasters, but they aren't real strong. google it. you dont get to keep your gears though, like everyone else has said, freecoasters mean singlespeed, and the only current MTB freecoaster is the KHE geisha hub.
Derailleurs don't like rollbacks. Most people's derailleurs will run just fine going forward and then just completely junk out as soon as they start into rollbacks.
But generally, if you're doing enough rollbacks to jam up your derailer you should probably buy a nicer derailer or go singlespeed anyways.
Ive tried the spacer idea on my buddies bike, it was fun, but not really all that practical, you can try it, but i can say you'll probably get fed up with it in a few weeks.
My best advice would be to go singlespeed and learn to roll back properly, or buy a better derailer. If you jump onto a freecoaster you tend to do more harm to your fakies then good. Id go into detail on it, but you should really learn the proper way beefore getting a coaster.
yes u can but buts its not technically free coaster its the "aaron chase neutral gear" SCI makes it im pretty sure and all it is, is a ruber or plastic spacer that takes up one sprocket in ur cassete and we u roll up to a fakie u shift into that gear then it acts like a free coaster