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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  Before I smash it up........
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Author Topic: Before I smash it up........  (Read 1238 times)

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Offline Andy68

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Before I smash it up........
« on: April 05, 2011, 10:59 PM »
 :uglystupid2: I'm sure it wasn't this frustrating 30 years ago.............  :tickedoff: 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

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Re: Before I smash it up........
« Reply #1 on: April 05, 2011, 11:03 PM »
new chain?

what crank set up are you using?

whats the alignment look like?

Offline hunterdubber

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Re: Before I smash it up........
« Reply #2 on: April 05, 2011, 11:10 PM »
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

Offline BENDYCAT ELEVENTEEN

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Re: Before I smash it up........
« Reply #3 on: April 05, 2011, 11:16 PM »
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  ;)
The Devil is away on business, I'm having to step in for him - How can I make your day Hell !!!

Offline Andy68

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Re: Before I smash it up........
« Reply #4 on: April 05, 2011, 11:18 PM »
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...........

Offline mattfx81

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Re: Before I smash it up........
« Reply #5 on: April 05, 2011, 11:27 PM »
Ive had chainrings that were badly machined do this to me twice.

Matt

Offline BENDYCAT ELEVENTEEN

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Re: Before I smash it up........
« Reply #6 on: April 05, 2011, 11:28 PM »
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  :knuppel2:

best to have a coffee or beer and come back later when yer off the boil  ;D
The Devil is away on business, I'm having to step in for him - How can I make your day Hell !!!

oldschoolfool

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Re: Before I smash it up........
« Reply #7 on: April 06, 2011, 11:43 AM »


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

x2 ,works every time  :daumenhoch:

Offline Andy68

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Re: Before I smash it up........
« Reply #8 on: April 06, 2011, 12:15 PM »
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!!  ::)  8)

Offline ED209

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Re: Before I smash it up........
« Reply #9 on: April 06, 2011, 12:48 PM »
SMASH IT.....SMASH IT NOOOOOW
"Do not go gentle into that good night,
Old age should burn and rave at close of day;
Rage, rage against the dying of the light."

Dylan Thomas

WANTED : Victor DX 9/16 spindle or pedal

The VW Doc

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Re: Before I smash it up........
« Reply #10 on: April 06, 2011, 01:05 PM »
Are you using one of those 90's Boi-pace chainwheels??

Nor much help - I'll get my coat!

Offline Andy68

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Re: Before I smash it up........
« Reply #11 on: April 06, 2011, 02:46 PM »
May smash it all up apart from the the lurrrvely Elina combo!!!  :2funny:

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

RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  Before I smash it up........
 

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