[stephenc]

My son has been given a Shimano ultegra but the threads on the right crank are knackered and I’m going around in circles trying to find the correct extraction tool and a new crank with pedal.

I’m now wondering if it’s worth the effort as it seems to be quite an old bile. Can anyone identify it please? Does it have any value? Would it be worthwhile getting the pedal welded to the crank rather than messing about with it trying to locate parts?

I’ve posted an image of it under my account.

Thanks, Stephenc

Topic

[Anonymous]

Looks like Ultegra 6600 10

Looks like Ultegra 6600 10 speed so about 13 -14 years. But it looks in v good condition so save the fuss and get a HeliCoil put in by your local bike shop.

[pockstone]

Or, save yourself some bother

Or, save yourself some bother and do what kevjj suggested!

[pockstone]

Well, it looks quite a nice

Well, it looks quite a nice bike, certainly as a freebie. If it’s specced with Ultegra (of whatever vintage) it’s probably of reasonable quality.

Did you take the pedal off, or was it already off when you got the bike?

Welding won’t be an option as the crank is alloy and the pedal spindle most likely steel. You could try bonding it with araldite or similar, but that will mean getting the pedal screwed into the  crank anyway. It’s hard to see how badly and to what depth the thread is damaged.

My first step would be to clean out the threads, (pedal and crank) thoroughly and try screwing (very carefully!) the pedal spindle into the crank from the other side. Make sure the pedal thread is OK before doing that. Use grease and see how far it will go. It may be that the crank thread is only knackered to a certain depth and you may be able to recut the thread using the harder steel thread of the pedal. If you can screw it all the way in, you should be able to screw it back in on the correct side. (Some pedal spindles don’t quite go all the way into the crank. Use a bolt with the same thread to finish off the last millimetre or two.) If that works, some threadlock will keep it secure. Make sure you put the pedals that you want on the bike. It might be a one time fix.

Alternatively, take it to a bike shop who should have a suitable tap and might be able to recut the thread.

Take care, I find pedals are quite tricky to screw into cranks at the best of times.

[stephenc]

Thanks kevvjj, any way to
Thanks kevvjj, any way to tell its age please?

[Anonymous]

That crank is easily fixed
That crank is easily fixed with a HeliCoil. Just take to to your local bike shop and they will fix it. Then you can use any pedal you like. Just for you information, the bike is a Specialized Allez Comp with Shimano Ultegra drivetrain.

[stephenc]

This is the bike.

This is the bike.

[stephenc]

OK apologies, I’m trying to

OK apologies, I’m trying to upload a larger image but the site seems to be preventing me from doing so.

Anyway, I’ve since found out that it’s a Shimano ultegra allez comp. Would it be worthwhile getting the pedal welded to the crank rather than messing about with it trying to locate parts? I’m in the UK (N.Ireland)

[David9694]

All we get picture-wise is

All we get picture-wise is a10mm thumbnail. 

[Author]

Replies