Ultegra and a 38t small ring??
12-19-10, 07:48 AM
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Ultegra and a 38t small ring??
Looking forward to next season and some of the stage races in the Northeast, like Tour of Catskills and GMSR. My wife and I are both running 53x39's and will have an 11x28 for those races.
Had thought about swapping out the 39t for a 38t, but from what I can see Shimano doesn't make one. I see that FSA has a 38t, but how would this affect shifting??
I know we'll both need that little bit extra for the climbs in those races...
Oops...Should have mentioned, Ultegra 6700
Had thought about swapping out the 39t for a 38t, but from what I can see Shimano doesn't make one. I see that FSA has a 38t, but how would this affect shifting??
I know we'll both need that little bit extra for the climbs in those races...
Oops...Should have mentioned, Ultegra 6700
12-19-10, 07:54 AM
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Change cassette:
https://www.google.com/products/catal...ed=0CB4Q8gIwAQ#
https://www.google.com/products/catal...ed=0CB4Q8gIwAQ#
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Fred "The Real Fred"
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12-19-10, 07:55 AM
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Are you sure the 38 from FSA has a 130BCD?
I'm pretty sure it's a 110BCD for a MTB.
With a 130 BCD crankset the smallest you can go is 39. If you want to go lower you need to go to a compact crank. Then you are running 50/34. You may also have to change you front derailluer but, at the very least you will need to adjust it.
I'm pretty sure it's a 110BCD for a MTB.
With a 130 BCD crankset the smallest you can go is 39. If you want to go lower you need to go to a compact crank. Then you are running 50/34. You may also have to change you front derailluer but, at the very least you will need to adjust it.
12-19-10, 07:56 AM
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Change cassette:
https://www.google.com/products/catal...ed=0CB4Q8gIwAQ#
https://www.google.com/products/catal...ed=0CB4Q8gIwAQ#
12-19-10, 08:02 AM
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I believe the RD6700 is limited to 28t...
And yes the FSA 38t is 130BCD...
And yes the FSA 38t is 130BCD...
12-19-10, 08:04 AM
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Works on my 105 road bike with out changing the chain>
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12-19-10, 08:07 AM
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That looks like a long cage 105...
12-19-10, 08:10 AM
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I've got a short cage Ultegra...
12-19-10, 08:14 AM
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The FSA chainring might be the least expensive option. It won't give you a lot and shifting will suffer.
12-19-10, 08:20 AM
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I might also mention that 53 vs 38 is still less of a jump than 50 vs 34. I doubt you will notice much of a difference in your front derailleur shifting.
12-19-10, 08:30 AM
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the point is that you can use whatever crank you have. SRAM also makes 38T chainrings. A bunch of companies do.
however, I think the gains (gains of negative speed?
) are going to be hardly noticeable. As much as I hate to agree with 10wheels, you just won't see much of a difference by only reducing the front ring by one tooth.
however, I think the gains (gains of negative speed?
) are going to be hardly noticeable. As much as I hate to agree with 10wheels, you just won't see much of a difference by only reducing the front ring by one tooth.
12-19-10, 08:37 AM
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the point is that you can use whatever crank you have. SRAM also makes 38T chainrings. A bunch of companies do.
however, I think the gains (gains of negative speed?) are going to be hardly noticeable. As much as I hate to agree with 10wheels, you just won't see much of a difference by only reducing the front ring by one tooth.
https://farm6.static.flickr.com/5202/...65eb5215_b.jpg
however, I think the gains (gains of negative speed?
) are going to be hardly noticeable. As much as I hate to agree with 10wheels, you just won't see much of a difference by only reducing the front ring by one tooth.https://farm6.static.flickr.com/5202/...65eb5215_b.jpg
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12-19-10, 08:46 AM
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Yea Grumpy...I went to Sheldon's site and saw the difference was pretty minor...I guess any way we slice it we shall be suffering 
Unless we went compact, which is not going happen at this point...
Unless we went compact, which is not going happen at this point...
12-19-10, 08:49 AM
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hahaha win...Me, nah...I'll be happy just to finish...
12-19-10, 08:52 AM
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I know some riders who have done both of those events. I haven't done either.
As I recall one of the guys in the ToC was using 53/39 and 11/28. He was fairly competitive but did not podium. I doubt the difference was in the gearing.
I do know a guy who has won the GMSR a few times in the Masters. I don't know what his gearing was, but am assuming he used his standard crankset, since I see him on it anyway and there's a crit.
As I recall one of the guys in the ToC was using 53/39 and 11/28. He was fairly competitive but did not podium. I doubt the difference was in the gearing.
I do know a guy who has won the GMSR a few times in the Masters. I don't know what his gearing was, but am assuming he used his standard crankset, since I see him on it anyway and there's a crit.
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