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dannybrear

Crank Damage Help (pics)

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Just removed crankcase of MH349 to see damage of crank,

The end of crank has been all chewed up (See pics) Now the bike is just a field bike at moment and it ran o.k but what will happen if i continue to run the bike like this? I know i shouldnt but at the moment i can't track a crank down and its a budget bike for messing around on whilst i get more time/money to sort it out properly or upgrade to another bike

HPIM0230.jpg

Cheers

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Hard to see whats going on there with that end on view. Has the end of the crank been cut off? Don't see a centre hole there now.

I expect sometime in the distant past someone has tried to get the pinion off, and they are incredibly difficult to remove, and mangled it in the process. Was there a nut on the crank that side?

Wayne...

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There is no hole there there now, The end of crank is missing but its not been cut looks like it has snapped off with the balance weight,

Different pic not sure if its any better,

HPIM0232.jpg

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How long have you been riding it ?.

Did you strip it because something broke?

If the answer is it was running fine and you cant see any broken bits in the cases,and it is a buget bike put it back together and dont woory till it does break.

That is probably what the last guy did,hence no bits in the cases.

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Put a dab of arc weld to stop the sprocket moving but only a dab which you can easily grind off to remove when/if you get another crank. The bike will be rev'ier as its missing one of the weights but it should be OK to use

Dave

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Cheers for the reply's :thumbup: I have not ridden the bike just listened to it running reving etc, Previous owner said he ran it for a while until he realized there was a problem. There is no other damage in there so i will give it a go

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