RADBMX.CO.UK
Technical & Reference Section => Tech and Restoration => Topic started by: muttley on May 18, 2007, 09:25 AM
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Basically when i ride forwards its like me chain is going tight, clicks then goes slack >:( quite annoying really.
What i have done to rectify:
1. Checked the alignment of me sproket with freewheel, various positions but no joy.
2. Wheel position
3. Double checking sproket position on spindle, but its spot on.
4. Chain is only a couple of months old 4 jeri half link.
5. Various slackness on the chain
Only leaves the freewheel wich is oddyssey, could it be dodgy in someway?
HELP!!!!!
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1st try another sprocket
check bb is in square
have you bet your rear triangle fatty lol
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Its a new frame so i shouldnt have bent it yet :LolLolLolLol:
Funny you should mention the BB coz there was a slight issue getting the bearings in (its mid BB) and one of them is ever so slightly out, but doesnt hinder spindle performance.
Sprocket is new too, will try another one though, bloody annoying i can tell you.
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never trust a sprocket to me spot on
they can be offset or warped kinda
on the whole they are usualy ok but not always.
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Will try another one just to be sure cheers Harris. ;)
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have you got the tophat on the sprocket mutts
as that sometimes makes em move
hence the slack and tight
and if its a cassette cog my clicks a tad lol
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Yeah the top hat is on, i always double check that wich is why i am really confused over the tight slack thing :(
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Sounds like you have checked most things. What about run out on the chain ring or perhaps a problem with the rear wheel bearing. That would show up as movement on the wheel though.
Might be worth checking the chain for tight links or even badly formed teeth on the chainring or sprocket.
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Agree with chubs, I had the exact same souding problem as you and it was because the chain was too thin for the freewheel. (It looks fine, but was a fraction too narrow.)
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heve yer riden ramps lately , might have banged front sproket on a coping n damaged the chain halflinks nip on front sproket n create tight spot !!!!!! well mine did
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Yeah riding ramps regular and have caught it a few times, took a couple of links out of chain when new bike was put together and re-checked it for stiff links, didnt really check for damge though, will check chain too :)
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a couple of things....
when you go over the volcano, you were sometimes hitting your chainring... maybe it is slightly bent...
i had a similar problem at epic last year. it turned out that the bearings in the hub were knackered, and that made the sprocket fairly loose...
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I had the same problem at Epic last year too........turned out it was just me that was knackered!!! :LolLolLolLol:
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loosen the chainring bolt (the one holdin it to the crank) tighten the cranks up then retighten the sprocket bolt, if this dont fix it take the chain off and file the edges of the teeth of the chainwheel, you might have a slight burr on there, I have had this before and it took me an age to work out, also check the chain line, I find that drive side bb spacers are normally too wide, and replace them with the thin washers from Flight cranks or similar to get a straight line
hope this helps?
:) DINGO :)
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Are you running tuffs ??
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top hat washer (spacer) sits just in side your sprocket/where it gos over your spindle, you only need to have a little bit of play for that to happen ross i had it recently tight then slack chubbs knows what i mean cause he told me what it was on mine
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did you get it sorted muttley ,what was the prob in the end ???
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Erm hmmm, ......ok look i built the bike up quick when i got the frame a couple of weeks ago and took my time over the parts that need the care and attention and well to cut a long story short...............i had me chain on upside down
MOVE ON NOTHING TO SEE HERE.
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:LolLolLolLol:
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:LolLolLolLol:
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What sort of chain is that then ? When I was a lad chains were chains must be some new fangled modern thing I have never seen. Whats wrong with a nice DID or Izumi ? ;)
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:-[ I have just seen the pictures, what will they think of next ;D
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And who fixed it for you eh? ;) ;D
Down the bike shop for you and get yourself a decent chain, none of this 4jeri shit.
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Stuck a shadow chain on, OH MY WORD!!!!! The difference is unreal, its sooooo smooth and runs true.
Highly recommended.
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do you have to have a max size sprocket for em to fit?
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Basically when i ride forwards its like me chain is going tight, clicks then goes slack >:( quite annoying really.
What i have done to rectify:
1. Checked the alignment of me sproket with freewheel, various positions but no joy.
2. Wheel position
3. Double checking sproket position on spindle, but its spot on.
4. Chain is only a couple of months old 4 jeri half link.
5. Various slackness on the chain
Only leaves the freewheel wich is oddyssey, could it be dodgy in someway?
HELP!!!!!
its nowt to do with me mate .... :shocked:......lol
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ffs... and you build rear wheel drive saxo's.... i aint friggin buying one
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do you have to have a max size sprocket for em to fit?
The new Shadow chain can go down to a 9 tooth sprocket quite happily.