BMX - chain play

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ascend
11-07-08, 04:09 AM
First time with 25/9 gearing -- how much play should I be aiming for in the chain?

I'm finding it hits the chain stay when I land if I set to what I'm used to, but it concerns me that setting it much tighter is gonna wear those tiny little sprockets out super fast.

abowler10154
11-07-08, 04:22 AM
Well, destroyed chain stays vs. worn down sprocket. What would you rather have.
pc_1453
11-07-08, 05:13 AM
I'd keep it kinda loose and buy a lizard skin for the stays.

FuzzyRyder
11-07-08, 03:39 PM
no, keep it nice and snug, not overtight though.
fuzzbox
11-07-08, 04:08 PM
You should be able to move the chain up (with your fingers) about half an inch or so
ascend
11-07-08, 05:10 PM
is that half an inch each way (so an inch of movement in total), or half an inch movement in total (so a quarter inch each way)?
FuzzyRyder
11-07-08, 05:14 PM
no more then a half inch, id say even snugger. You want the cranks to spin nice and easy but the chain not lose.
pc_1453
11-08-08, 10:51 AM
that's what I meant by kinda loose. do you have those little wheel supports that go at the back of the stays? if you do, keep it about that tight, maybe a little tighter if you don't