Hi, What a great idea this forum is. I'm glad to have stumbled across it whilst desperately seeking to find parts to fix my bike. I've got a Trek that I bought c1994 and my caring partner decided that it would be nice to change the pedals, you know, get rid of the old plasticy ones for a model with greater grip for extra safety and all that. Unfortunately he wasn't aware of his brute strength and ruined the thread, so, now I can't have pedals at all. I use my bike every day to ride to work and it works totally fine, minus the pedals! Anyway, the crankshaft is a Shimano Altus c50 and I understand that these are no longer readily available as they're considered to be vintage and I can't get something to replace it without adaptors which, by the time I pay for that I could buy a new bike. Does anyone have something like this laying around that they're willing to part with? Anyone know of a good place to look for vintage bike parts? I've tried all over the internet with no luck. I love my bike and it has served me well - I'd rather fix it than send it into landfill.
Well, the temporary fix of my pedal-less bike has given up the ghost already. My dad's mate did some welding just to try but doubted the joining of 2 different alloys so didn't think it would last long, and it didn't. Oh well.
If you're still willing to help, please let me know what details you need to check whether you have something suitable for my bike. You may need to step me through what you mean by things like square taper bottom. I can send photos if that will help.
My Trek is a mountain bike and the number on the inside of the crankshaft is 170. At this stage the side that is totally buggered is the non-drive side (the side without the chain) but as the weld didn't hold for long on this side, I'm suspicious of the other one holding for too long. So probably both sides would be best.
Enjoy the long weekend.
Mike Brisco is a member here. Put a message on his page, he has a yard full of bikes which he and other volunteers renovate and donate to refugee and similar organisations, he may well be able to help, an offer of a cash donation might be a nice gesture.
There are a few Adelaide businesses which repair and sell second-hand bikes. On my side of town, there's a shop in Prospect and another at the Port Markets. You could ask what cranks they've got on the bikes they are stripping for parts.
(BTW, I feel your pain. I've just spend $40 on a new cassette and chain for a 7-speed mountain bike, would very much like to find some new chainrings.)
At "Bikes for Refugees" we have spare cranks and chain-rings, most secondhand, a few new. Send a few more details - photo is good - we can look through the spares box, and if nothing there, can see if there is one, on one of our bikes.
If all you want is a crank with tapered square hole - should be easy. If you want something looking similar - we need to see how many arms (3 or 5); locations of bolts attaching the rings onto the arms; length of crank. Those vary a lot.
Kerri followed up with me this morning. I'm fairly confident that she had a square tapered crankset with riveted chainrings. I have something similar for her but if you have a decent MTB crankset with swappable chainrings I'd be keen to hear about it!