Rear brake with 25mm wide wheels
Alchilds
Posts: 4
Got some new wheels that are 25mm wide. The rear brake a fsa gossimer doesn't open wide enough to use. Do I need a new brake? If so what ones will work with 25mm. Thanks in advance
0
Comments
-
They all work with tyres wider than 25mm.
Try adjusting the brake cable tension.
If that sounds complicated, take it to a local bike shop and pay them to do it for you.The above may be fact, or fiction, I may be serious, I may be jesting.
I am not sure. You have no chance.Veronese68 wrote:PB is the most sensible person on here.0 -
I think he means the rims are 25mm wide.0
-
I think he means the rims are 25mm wide.
Yes its the rim width. Lbs couldn't sort it. He couldn't set the cable tension without the pads touching the rim. He said the caliper didn't open wide enough.
I think some sram brakes are OK for wider rims just not sure what ones.0 -
My DA9000 and Sram Red 22 brake calipers work with 23mm wide rims. i think they could handle 25mm rims just fine. Any of the latest Shimano 5800/6800/9000 brakes or Sram Red22 or Force22 brakes should work i think.0
-
I think he means the rims are 25mm wide.
Yes its the rim width. Lbs couldn't sort it. He couldn't set the cable tension without the pads touching the rim. He said the caliper didn't open wide enough.
Doesn't make any sense. The majority of rims being released these days are 23mm wide upwards and going off what your LBS is saying, you wouldn't even be able to set your brakes to work properly with those as you wouldn't even have 1mm of clearance on either side.
If you undo the 5mm allen bolt clamping the inner brake cable, the caliper should spring open much, much wider than 25mm unless it's very badly seized! :?0 -
I think he means the rims are 25mm wide.
Yes its the rim width. Lbs couldn't sort it. He couldn't set the cable tension without the pads touching the rim. He said the caliper didn't open wide enough.
Doesn't make any sense. The majority of rims being released these days are 23mm wide upwards and going off what your LBS is saying, you wouldn't even be able to set your brakes to work properly with those as you wouldn't even have 1mm of clearance on either side.
If you undo the 5mm allen bolt clamping the inner brake cable, the caliper should spring open much, much wider than 25mm unless it's very badly seized! :?
That's what I thought but that's what happens. To get tension of the cable the pads stop the rear wheel from turning. My temp fix was to grind 3mm off each pad! Just want to buy a brake that fits. Think a sram rival or above should be OK as they have clearance for a 28mm tyre was hoping someone could confirm that's fine with a 25mm rim.0 -
trim the pads, i.e. file down as if part worn, like the swissstop black prince evo.Colnago Addict!0
-
I think he means the rims are 25mm wide.
Yes its the rim width. Lbs couldn't sort it. He couldn't set the cable tension without the pads touching the rim. He said the caliper didn't open wide enough.
Doesn't make any sense. The majority of rims being released these days are 23mm wide upwards and going off what your LBS is saying, you wouldn't even be able to set your brakes to work properly with those as you wouldn't even have 1mm of clearance on either side.
If you undo the 5mm allen bolt clamping the inner brake cable, the caliper should spring open much, much wider than 25mm unless it's very badly seized! :?
It might not make any sense but the same happend to me 3 weeks ago when fitting my new 25mm wide rims!
FSA brakes on my Wilier, Wheelsmith Aero 50 wheels.
Calipers opened as wide as they will go with the pads fitted and the brake cable completely disconected.
Still not wide enough!
I got round it by removing the blocks and swapping the block washers for some much thinner. That gave me 3mm of extra room (1.5mm each side). The wheels now fit ok but only just!0 -
I had issues with dura ace 7800 with this. You can just get enough width at the blocks for a 25mm rim (and I mean only just, barely any cable tension) but the pads can't be set straight against the rim. It ends up with just the top edge of the pads touching the wheel. The latest Shimano groupsets seem fine though - 9000/6800.0
-
New fangled stuff.I think he means the rims are 25mm wide.
I am glad that I am a traditional kind of guy.The above may be fact, or fiction, I may be serious, I may be jesting.
I am not sure. You have no chance.Veronese68 wrote:PB is the most sensible person on here.0
