Cranksets
07-25-24 | 12:30 PM
#26
Senior Member
Joined: Dec 2005
Posts: 18,774
Likes: 11,502
The challenge is to get the same gear ratio. A max cog of 26t, which most RDs should be able to handle, with a 30t small front ring equals 31 gear inches. To get that with a 38t ring means going to a cassette/freewheel with a 34t max cog, which means a long cage RD with lots of wrap capabilities and perhaps new shifters. A compact double with 50/34t rings with a 26t max cog gives a low of 35 gear inches, but to get that with a 38t ring, you’d need a 30t max cog on the rear, beyond the capacity of many “classic” RDs.
07-25-24 | 12:55 PM
#27
Senior Member
Joined: Dec 2005
Posts: 18,774
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Thanks for the photo and explanation about the 30 tooth ring on 110 BCD spider..... I'm sorry to say I still don't understand exactly how it's done. Probably need to see one apart or partially fitted.
Really, I'm asking because I wondered if it's something that could be "bodged" up at home.... Asking for a friend🤔
Really, I'm asking because I wondered if it's something that could be "bodged" up at home.... Asking for a friend🤔
07-29-24 | 05:45 PM
#28
Thread Starter
Newbie
Joined: Jul 2024
Posts: 7
Likes: 1
From: Calgary, Alberta
Bikes: T-Lab Titanium, Rossin Strada Professional
Thanks for all the info. I like the Velo Orange and White Industry cranksets. I think I'm going to go with a modern 11 or 12 speed set up (my Ultegra 11 speed fits fine). I would like a nice crank to set it all off. The frame should be re-painted by the end of the week and I intend to build it up from there.
07-29-24 | 06:21 PM
#29
Senior Member
Joined: Apr 2011
Posts: 12,650
Likes: 4,792
