Replacement rim brakes for wife rims
03-23-23, 10:27 AM
#1
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Replacement rim brakes for wide rims
I have a 2012 BMC SLR01 Team Machine that came with 23mm tires and old school narrow rims, 17mm internal. I've since picked up new wheels with 25mm tires and 19 mm rims. The original brakes just barely clear, but with no ability to open up wider.
Can anyone suggest a high-end rim brake that would work with SRAM Red levers and accommodate the wider rims?
Can anyone suggest a high-end rim brake that would work with SRAM Red levers and accommodate the wider rims?
Last edited by marathon marke; 03-23-23 at 11:47 AM.
03-23-23, 10:44 AM
#2
Thread derailleur
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Sounds like Red brakes, too, although those always looked to me like they opened wide.
My 9000-series Dura-Ace open wide to accommodate my 20mm rims and 28mm tires. Plenty of room for up to 32's.
These work flawlessly and stop on a dime.
My 9000-series Dura-Ace open wide to accommodate my 20mm rims and 28mm tires. Plenty of room for up to 32's.
These work flawlessly and stop on a dime.
03-23-23, 11:38 AM
#3
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Thanks for the suggestion on the DA. So do they still allow you to open them up further if needed?
03-23-23, 12:20 PM
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I have a 2012 BMC SLR01 Team Machine that came with 23mm tires and old school narrow rims, 17mm internal. I've since picked up new wheels with 25mm tires and 19 mm rims. The original brakes just barely clear, but with no ability to open up wider.
Can anyone suggest a high-end rim brake that would work with SRAM Red levers and accommodate the wider rims?
Can anyone suggest a high-end rim brake that would work with SRAM Red levers and accommodate the wider rims?
19 mm is more like a touring or gravel rim (I know wide is trendy). Can you find some slimmer brake blocks that will allow your current brakes to reach? Or just replace the spherical washers (if fitted) with something narrower?
03-23-23, 01:40 PM
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With so many migrating to disc brakes, you can find DA brakes in excellent condition all day long on eBay.
7800, 7900, 9100 all fit about the same.
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03-23-23, 07:18 PM
#6
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17 mm internal isn't narrow, old school rims were 13-14 mm with tyres 18 - 25 mm (I still have some I use with 28 mm tyres).
19 mm is more like a touring or gravel rim (I know wide is trendy). Can you find some slimmer brake blocks that will allow your current brakes to reach? Or just replace the spherical washers (if fitted) with something narrower?
19 mm is more like a touring or gravel rim (I know wide is trendy). Can you find some slimmer brake blocks that will allow your current brakes to reach? Or just replace the spherical washers (if fitted) with something narrower?
That's not a bad idea about the spherical washers. They are pretty thin already, but I might try to file down the flat sides. Thanks for the idea!
03-23-23, 08:14 PM
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Clark W. Griswold
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Thinner pads or different sets of washers is a great idea. If you do want to upgrade and I do mean really upgrade, eeBrakes from Cane Creek are the way to go. A totally modern rim brake with little weight and loads of power. I have two sets and love them dearly for all my road rim brake bikes it is tough to beat them (except on price).
03-24-23, 08:13 AM
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You can get rid of the spherical washers if you custom fit wedge washers with the necessary angle filed into them. It can be fiddly getting the orientation right when tightening them, but not something you have to do often.
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03-24-23, 08:22 AM
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Thinner pads or different sets of washers is a great idea. If you do want to upgrade and I do mean really upgrade, eeBrakes from Cane Creek are the way to go. A totally modern rim brake with little weight and loads of power. I have two sets and love them dearly for all my road rim brake bikes it is tough to beat them (except on price).
03-24-23, 08:33 AM
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Clark W. Griswold
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Yeah they aren't cheap but they also aren't cheap. I remember first getting them and being like surely these boxes are empty and Cane Creek scammed me but no they were in there just so light. Also they are some of the best rim brakes I think I have ever used or seen.
03-26-23, 08:32 AM
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Swissstop sells pads of various compounds to address exactly that. I believe their name for low profile pads is EVO. Also, check that there are no plain washers inside the arms in your current setup. It seems from my investigation of various brakes' diagrams that only the spherical washer is needed inside the arm.
oldschoolbike
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03-26-23, 09:28 AM
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I have a 2012 BMC SLR01 Team Machine that came with 23mm tires and old school narrow rims, 17mm internal. I've since picked up new wheels with 25mm tires and 19 mm rims. The original brakes just barely clear, but with no ability to open up wider.
Can anyone suggest a high-end rim brake that would work with SRAM Red levers and accommodate the wider rims?
Can anyone suggest a high-end rim brake that would work with SRAM Red levers and accommodate the wider rims?
03-26-23, 01:59 PM
#13
Senior Member
Someone mentioned thinner washers. The Koolstop pads I use and most others come with two different thickness of cup washers. Just check that you're using the thin ones between the arm and pad.
I also use the slightly thinner V brake pads rather than the road bike pads. That gives me a little more clearance and also better seating to the rims since I'm running 28's on 24mm rims.
I also use the slightly thinner V brake pads rather than the road bike pads. That gives me a little more clearance and also better seating to the rims since I'm running 28's on 24mm rims.
03-26-23, 03:40 PM
#14
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When you say there is "no ability to open up wider," do you mean that when you removed the cable from the brake, it still wouldn't open? Did you then attempt to open it wider with your hands? It seems highly unlikely that the brake won't open wide enough for this rim that is 2 mm wider. If removing the cable didn't allow the brake to open but you can open it with your hands, then it needs cleaning and lubrication to restore its original range of motion. And if when you removed the cable the brake sprang open, you just need to adjust the cable attachment.
