Bike Forums - View Single Post - largest spread for fr derailer?

08-27-11 | 08:33 PM

#5

Medic Zero

Senior Member

Joined: Apr 2011

Posts: 2,285

Likes: 1

From: Kherson, Ukraine

Bikes: Old steel GT's, for touring and commuting

Quote:

Originally Posted by sstorkel

Most triple derailleurs are spec'd for a 22-tooth spread, most doubles a 16-tooth spread. Honestly, for a touring bike I think you'd be fine with a 26/38/48 trekking crank. If you're spinning out of the 48-11 combo (41mph @ 120rpm), it's time to relax and coast IMHO...

I'm finding it difficult to research what would be compatible with my set up (indexed 9 speed mountain, 1" steel tubing) but so far have come across the FD-R453 which appears to be spec'd at 24 tooth spread.

I'm thinking you are right about the 48, I didn't realize I was going quite that fast, I had noticed that no cars were catching up to me on one of my descents during my commute!

So, what about 48-36-24 ? Does that make sense?

Thanks again!

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