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Any reason why double comes w/ 53 and triple w/ 52 ?(9 posts)

Any reason why double comes w/ 53 and triple w/ 52 ?PeterRider
Jun 11, 2002 11:46 AM
... regarding shimano stuff (I don't know about campagnolo)

I was just wondering, is it for better shifting ?

Thanks,

Pierre
variesDougSloan
Jun 11, 2002 12:21 PM
Dura Ace triple and Record triples come with a 53. Some doubles come with either.

I think the idea behind using a 53 on a triple is that you likely are using a 12 tooth small cog in the back, and might want slightly higher gearing than the 52 provides.

I've found that because of terrain, the more you need low gears the more you need high gears. If everything were flat, a single speed would suffice.

Doug
yeah,the dad
Jun 11, 2002 12:51 PM
My special hill riding cassette is 11,12,13,14,23,25,27,30,34. Some guys don't like it because it lacks a 16 tooth cog. They think that it has too big of a gap in the middle.
I can see why they think thats too big...collinsc
Jun 11, 2002 2:36 PM
thats nearly a whole cassettes worth of gap between the 14 and the 23
I would change that cassetteLC
Jun 12, 2002 12:42 PM
Not just the 16; the 15,16,17,19,and 21 which is exactly where most spend over 90% of the time. If you really need a 34, then I would customize it and make a 12,14,15,17,19,21,23,27,34. At the very least take out the 11 or 12 and add a 17 or 19.
Due to teeth capacity of the deraileur (22 max) 52-30 (nm)Paul
Jun 12, 2002 3:48 AM
Are you sure?laffeaux
Jun 12, 2002 10:26 AM
Maybe the 22 max on the deraileur is because the cranks are 52-30. I'm sure Shimano could desing a 23 max deraileur if they cared too.
Yes, that's the spec on the Ultegra triple, 22 max.Paul
Jun 12, 2002 10:51 AM
When i first got my Dura Ace 9 speed, the spec on the rear der. was 26 even though at the time they made only a 12-25. Then they came out with a 12-27, and the rear der. would handle it. Based on this, they probably allow a fudge factor. But, with Shimano, that's all you get. Now, would the front der. work with a 53-30? Don't know.
It does on the D/A Triple 53/39/30 nmLen J
Jun 12, 2002 5:44 PM