Left peddle arm is wobbly. Can anyone help??

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Just bought a brand new bike 1 day ago and ive only been on it for an hour and the left peddle arm has went wobbly? Does anybody know how to fix this?
 

Mburton1993

Über Member
Location
Stalybridge
Have you tried tightening the bolt?
 

lazybloke

Considering a new username
Location
Leafy Surrey
I'd email the shop immediately and keep any responses.Likely they'd fix it immediately, and that'll be the end of the matter.

But if the problem recurred, and they became less helpful, you would at least have some evidence that the issue was there from Day 1. COuld be useful for future dispute resolution.
 

rogerzilla

Legendary Member
If the crank is ridden for more than a few miles when loose, you need a new crank as the taper will be ruined.

It's always the left one that loosens worst.
 

Jameshow

Veteran
If the crank is ridden for more than a few miles when loose, you need a new crank as the taper will be ruined.

It's always the left one that loosens worst.

If it's a cheap bike a good wallop with a club hammer on the crank with the other crank in a block of wood will probably set the crank on firm? Then do the bolt up.
 

Ajax Bay

Guru
Location
East Devon
It matters not. The info will be useful to others, even if ja97 never reads it.
Well not really. A search for this problem will not bring up this thread, unless the searcher happens to choose "wobbly" as the search word. And the perfectly good advice (above) is not rocket engineering: "brand new bike" = communicate with (or take to) seller/shop if you don't have a clue.
We don't even know whether this is square taper. All we can guess is that this bloke is in his twenties.
 
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Drago

Legendary Member
Take it back to the shop.

However, dont simply let them tighten the bolt/nut. It the crank is loose on the shaft the socket area is laible to have been damaged and it will inevitable come loose in short order. A new crank arm or even a new bicycle isrequired.
 
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