General Discussion Triathlon Talk » Bike re-build question Rss Feed  
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2016-09-22 11:19 AM


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Subject: Bike re-build question
Hey all,
I am looking at purchasing a new frame to ride on next year, but just want to move all my current equipment over from my current bike. Is this as simple as buying the frame and then moving everything over, or are there specifics you have to look for to ensure compatibility? The one thing I thought about was the bottom bracket where the crank feeds through, but maybe that's not a big issue with converters and such. Can you all give me a crash course on what I need to look out for?

Thanks so much!


2016-09-22 2:06 PM
in reply to: linkslefty

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Elite
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Subject: RE: Bike re-build question

Here is an article on types of bottom brackets.  https://learn.performancebike.com/bikes/advice/buyers-guides/bike-parts-and-components/understanding-bottom-brackets-and-cranksets and the cranks that are compatible with each type.

 

The other issue is the type of derailleur hanger for the front. It can be clamp or braze on.  For clamp on, the clamp must match the seat tube diameter.  Here is an article about that

http://www.sheldonbrown.com/front-derailers.html

 

 

2016-09-22 2:15 PM
in reply to: linkslefty

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Master
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Kailua, Hawaii
Subject: RE: Bike re-build question
Well not sure what bike / components you have now and what frame you are looking to transition to.

I just did this recently, and mostly everything was able to transfer to the other frame fairly easily.

The only things that had to be replaced, was the chain and the cables / housings for the brakes and derailleurs.

Mainly you need to make sure the bottom bracket is compatible with your crankset. There are different types such as the BBright, BB30, BB90, and 68mm Threaded (common). So you would want to match what you have optimally.

http://www.parktool.com/blog/repair-help/bottom-bracket-standards-1...

Your steering setup should transfer over, although you probably will need a different stem, also the stack will most likely need adjustment.

Brakes may work ok on the new frame, but depends if the frame is for standard side pull brakes or whatever you have. The mounting pins may need replacing since the frame thickness might be different.

Derailleurs, front derailleur most likely has a mount, and so does the rear derailleur. So those should transfer over.

The main issue after getting the parts over, is to (1) cut the housings, (2) run the cables for brakes and derailleurs, (3) alignment of derailleurs, and (4) brakes.

Then you'll have to adjust the bike for proper fit.
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