Colnago CLX - SRAM Force AXS flat mount caliper issue.
11-26-21, 06:37 PM
#1
It's carbon dontcha know.
Thread Starter
Colnago CLX - SRAM Force AXS flat mount caliper issue.
Discovered a problem with the front and rear calipers on my wife's road bike, Colnago CLX disc and SRAM Force AXS setup. The bike is 160mm front, 140mm rear rotors, flat mount calipers.
The calipers seem to be a little too "high". I discovered the pads are wearing dangerously with a lip, so the pads can end up touching above the level of the rotor. Front and rear seem to have the same issue.
Rear caliper is mounted directly on the chainstay, no adapter.
Front caliper has the 160mm adapter in the correct orientation.
Anyone got any useful suggestions?
The calipers seem to be a little too "high". I discovered the pads are wearing dangerously with a lip, so the pads can end up touching above the level of the rotor. Front and rear seem to have the same issue.
Rear caliper is mounted directly on the chainstay, no adapter.
Front caliper has the 160mm adapter in the correct orientation.
Anyone got any useful suggestions?
11-26-21, 06:40 PM
#2
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That's messed up. I'd be wanting to contact my local Colnago dealer or the US distributor.
11-28-21, 08:30 AM
#3
Senior Member
That's more than a little off, it's way off. Be sure that there is no spacer under the rear caliper. If not, there's not much that can be done to lower a caliper. Up front, there's more chance of a fix with the adapter.
It could be that the frame was made for 160mm minimum at the rear. There are some frames made that way. If so, then the front might need a 180mm rotor or the adapter flipped and the rear just needs a 160mm rotor.
I have force axs mechanical brake levers with Juin-Tech GT four piston calipers. They are made for 160mm rotors. I recently installed a 160/140 adapter on the front and run a 180mm rotor on the front.
It could be that the frame was made for 160mm minimum at the rear. There are some frames made that way. If so, then the front might need a 180mm rotor or the adapter flipped and the rear just needs a 160mm rotor.
I have force axs mechanical brake levers with Juin-Tech GT four piston calipers. They are made for 160mm rotors. I recently installed a 160/140 adapter on the front and run a 180mm rotor on the front.
11-28-21, 10:04 AM
#4
It's carbon dontcha know.
Thread Starter
That's more than a little off, it's way off. Be sure that there is no spacer under the rear caliper. If not, there's not much that can be done to lower a caliper. Up front, there's more chance of a fix with the adapter.
It could be that the frame was made for 160mm minimum at the rear. There are some frames made that way. If so, then the front might need a 180mm rotor or the adapter flipped and the rear just needs a 160mm rotor.
I have force axs mechanical brake levers with Juin-Tech GT four piston calipers. They are made for 160mm rotors. I recently installed a 160/140 adapter on the front and run a 180mm rotor on the front.
It could be that the frame was made for 160mm minimum at the rear. There are some frames made that way. If so, then the front might need a 180mm rotor or the adapter flipped and the rear just needs a 160mm rotor.
I have force axs mechanical brake levers with Juin-Tech GT four piston calipers. They are made for 160mm rotors. I recently installed a 160/140 adapter on the front and run a 180mm rotor on the front.
On the front I guess I could flip the adapter to the 140mm setting and then try to use some washers to space it out slightly somehow.
I think first though I'm going to have to try and get it to a Colnago dealer, it's out of warranty though so no idea what they might suggest.
11-28-21, 04:33 PM
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How short was the warranty period? Also the UCI standard for road disc brakes is 160 front/ 140 rear so it would make sense that is what Colnago does.
11-28-21, 06:00 PM
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If you get no help from Colnago, you can always cut/grind/shave off the part of the pad that's not making contact with the rotor. Should be an easy job.
11-29-21, 07:37 AM
#7
Senior Member
Another thought is to check the pads to be sure that they are the correct model. There are many different models. Look at the back side to see if there are marks left by the pistons. If those marks aren't centered, you need a pad with a longer mounting arm, to lower the pad.
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11-29-21, 07:12 PM
#8
It's carbon dontcha know.
Thread Starter
Those were the pads that came with the brakes - when the groupset was new in boxes. The replacement correct model of pads also sit too high.
Tried fitting a 160mm rotor in the rear, definitely no go, nicked the seat stay trying to fit the wheel in place
Tried fitting a 160mm rotor in the rear, definitely no go, nicked the seat stay trying to fit the wheel in place
11-30-21, 03:10 PM
#9
Senior Member
I've got no other suggestions. That's tight if a 160mm rotor won't fit. My Cinelli superstar has ample room.
You might still check out the Swiss stop website. You can print true size images of every brake pad.
You might still check out the Swiss stop website. You can print true size images of every brake pad.
