Before I smash it up........

[Andy68]

  I'm sure it wasn't this frustrating 30 years ago.............  Why the feck am I getting a mega tight and slack spot in the chain?? Everything seems nice & smooth until I fit the chain then it seems to end up running like a bag of nails................

[sid1972]

new chain?

what crank set up are you using?

whats the alignment look like?

[hunterdubber]

Chain device pressed the pin in too tight and you haven't flexxed it side ways to free it ?

Bent Chain ring ?

And poor alignment Chainring bent it towards crank arm where the bolt that fixes it to the arm

Wrong top hat washer

[BENDYCAT ELEVENTEEN]

one thing that drives me mad every single ride is a slack then tight chain as you turn the crank  

this to take  into account

chain has a tight link or split link not running smooth over the freewheel

chain ring in not in center by a couple of mills and throwing it out

freewheel is not centred and has a couple of mill to one side throwing it off

one piece crank is slightly off in line when bb nuts ar done up - screw thread throwing it out as the turning circle dips on one end


i just don't know what it is and it drive me mad as F'ing well

cheers B  

[Andy68]

Cheers chaps........I'll check alignment etc 2moz when I've calmed down and have another look. '83 GT, Sugino 1 piece crank, mirage disc and Pete's Precision sprocket, Ukai with Dicta freewheel and Izumi chain. Must say the chain looks mega close to the seat stay too...........

[mattfx81]

Ive had chainrings that were badly machined do this to me twice.

Matt

[BENDYCAT ELEVENTEEN]

I think we all get it happen at some point setting up a bike and it bugs the hell out of yer  

but know one has found out what it is yet and how to solve it  

best to have a coffee or beer and come back later when yer off the boil  

[oldschoolfool]

best to have a coffee or beer and come back later when yer off the boil  
[/quote]

x2 ,works every time 

[Andy68]

Could do with going home now and having a little fettle with it outside in the sun rather than sat here working my fingers to the bone!!   

[ED209]

SMASH IT.....SMASH IT NOOOOOW

[The VW Doc]

Are you using one of those 90's Boi-pace chainwheels??

Nor much help - I'll get my coat!

[Andy68]

May smash it all up apart from the the lurrrvely Elina combo!!! 

As for the chainwheel it's prob oval now after 30 yrs!!! Did ya sell me a 'dog' Pete???