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Replacement Chainring/Crankset

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Replacement Chainring/Crankset

Old 03-09-18, 09:34 PM
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Hatchet
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Replacement Chainring/Crankset

Hi all - I am overhauling my late 90's GT Tequesta for my son to use. It still has the original Exage crankset (similar to what is here: Shimano Exage triple 170mm 26/36/46 crankset New) installed on it. The chain rings are pretty worn and I'd like to replace them because when I apply any kind of pressure when pedaling, the chain skips off the teeth. I guess this is a result of putting a new chain (a SRAM PC 830 eight speed chain) on worn chain rings.

I've never purchased chain rings/cranksets online so don't know exactly what to look for in terms of specifications, etc. So my question is - how to I make sure I get something that fits correctly? I'd be happy to replace the cranks as well as the rings at the same time, if the price was right.

Also - if anyone has recommendations, that'd be great. My son will mostly be using the bike to get back and forth to school and running around with his friends on the weekends, so a mid- to low-end crankset would be fine.

Thanks!
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Last edited by Hatchet; 03-10-18 at 03:05 PM.
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Old 03-09-18, 09:50 PM
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I'd stick to the same tooth count just to make it easier. Also I'd get something Shimano from the same era if you want to keep the bike close to stock. There are a lot of used ones out there. Maybe even here in our classifieds section. Also check Craigslist. You most likely have a square taper crank.
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Old 03-10-18, 10:04 AM
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you have to know your bcd

https://www.bikeman.com/bicycle-repa...-chainring-bcd

I would also replace the cassette and chain at the same time, I see that you installed a new one but just to be sure i would probably replace it any way

that way everything is new and fits
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Old 03-10-18, 04:35 PM
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Originally Posted by Hatchet View Post
Hi all - I am overhauling my late 90's GT Tequesta for my son to use. It still has the original Exage crankset (similar to what is here: Shimano Exage triple 170mm 26/36/46 crankset New) installed on it. The chain rings are pretty worn and I'd like to replace them because when I apply any kind of pressure when pedaling, the chain skips off the teeth. I guess this is a result of putting a new chain (a SRAM PC 830 eight speed chain) on worn chain rings.

I've never purchased chain rings/cranksets online so don't know exactly what to look for in terms of specifications, etc. So my question is - how to I make sure I get something that fits correctly? I'd be happy to replace the cranks as well as the rings at the same time, if the price was right.

Also - if anyone has recommendations, that'd be great. My son will mostly be using the bike to get back and forth to school and running around with his friends on the weekends, so a mid- to low-end crankset would be fine.

Thanks!
I was going to say it could be hard to find all of those chainrings in the 5-bolt pattern you need, and if you do, they would cost more than a new crankset...... but then I looked at your link.

If Boulder Bicycle still has those for sale, $49 is worth it just for the rings.
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Old 03-16-18, 12:14 PM
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That's a great deal for the Exage crankset. One can see from the picture those rings are worn out. Be ready to replace the bottom bracket also as it may be worn out.
+1 to replacing the cassette/freewheel on the bike also.
You will need some special tools to do this work if you aren't already aware of this.
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Old 03-19-18, 10:55 AM
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Hatchet
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Originally Posted by grubetown View Post
That's a great deal for the Exage crankset. One can see from the picture those rings are worn out. Be ready to replace the bottom bracket also as it may be worn out.
+1 to replacing the cassette/freewheel on the bike also.
You will need some special tools to do this work if you aren't already aware of this.
Thanks. I replaced the chain rings, cassette and chain all at the same time. The BB had no play and turned as smooth as butter, so I will wait to replace that.
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Old 03-23-18, 11:59 PM
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Originally Posted by Hatchet View Post
Thanks. I replaced the chain rings, cassette and chain all at the same time. The BB had no play and turned as smooth as butter, so I will wait to replace that.
My mechanic said bottom brackets are like light bulbs. You only replace when they go bad.
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