View Single Post
Old 01-27-17 | 11:57 AM
  #14  
rm -rf's Avatar
rm -rf
don't try this at home.
20 Anniversary
 
Joined: Jan 2006
Posts: 6,220
Likes: 704
From: N. KY
I'd try this!
12-13-14-15-16-17-19-22-25-28-32.

Here's the Mike Sherman Gear Calculator link for this setup. All the settings are stored in the URL, so you can make changes, click Bookmark Gear Set, then save the page as a bookmark.
And all the charts update on the fly as you change cogs, cadence, or tire size.

It has bigger gaps in the 14-18 mph range, but the 34 chainring covers these very well.

17-19:
the 11-28 has 17B 19E 21D
the 12-25 has 17C 18D 19F 21B

I'll be interesting to see if the shifting is noticeably any worse.

A cassette can't line up the teeth all the way around, anyway. There has to be sections where they are optimal and others where the chain won't hit the next cog smoothly. Maybe the tooth shapes are modified on certain portions of the circle to improve this? I've never heard of any discussion of the cassette tooth designs.

I'm guessing that the shifting will be decent, and being in the middle of the cog set might help, too. See the example cassette photo attached.
Attached Images
File Type: jpg
17 19 22.JPG (88.5 KB, 189 views)
File Type: jpg
6800a.jpg (91.5 KB, 185 views)

Last edited by rm -rf; 01-27-17 at 12:18 PM.
rm -rf is offline  
Reply