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  #1  
Old 09-17-2024, 11:45 AM
tv_vt tv_vt is offline
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DA rim brake clearance - 9100 better?

Is there any difference in tire clearance between Dura Ace models, starting with, say, the 7900 version up to the last 9100 model? My frame is not the limiting factor, the brake caliper is.
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  #2  
Old 09-17-2024, 12:47 PM
Big Dan Big Dan is offline
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Not sure about the Shimano, but the newer SRAM Force calipers have great room.

https://forums.thepaceline.net/showt...es#post3249872

Last edited by Big Dan; 09-17-2024 at 04:44 PM.
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  #3  
Old 09-17-2024, 01:20 PM
Wunder Wunder is offline
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9100s are rated larger than 7900. Best clearance I think may actually be 5700 (105 ten speed). Where exactly are you limited today?
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  #4  
Old 09-17-2024, 09:14 PM
tv_vt tv_vt is offline
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7900 calipers- there is part of a large return spring that sits a little low in the rear caliper that rubs against the tire (32mm).
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  #5  
Old 09-17-2024, 09:36 PM
calumf50 calumf50 is offline
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https://forums.thepaceline.net/showt...ght=pull+ratio
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  #6  
Old 09-18-2024, 12:05 AM
Mr.Appa Mr.Appa is online now
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Quote:
Originally Posted by tv_vt View Post
Is there any difference in tire clearance between Dura Ace models, starting with, say, the 7900 version up to the last 9100 model? My frame is not the limiting factor, the brake caliper is.
On my Ritchey Logic I was able to smoosh some 33mm measured tires into the 7900 brakes with pretty decent clearance. The 9100 brakes, due to the double pivot, did not have as much clearance. The spring still gets a wee bit close to the tire in this photo, but I did a little reconfiguring to adjust the spring out the way.
Attached Images
File Type: jpg DA7900_1.JPG (101.4 KB, 79 views)
File Type: jpg DA9100_1.jpg (109.3 KB, 79 views)
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