How much brake drag is too much? - SV650.org

Fallout · 08-03-14, 01:48 PM

Does anyone have a rule of thumb on when brake drag is too much? I've just put a new rear disc on the tiger and it's not easy to spin the wheel freely. Probably does a quarter revolution with a good tug. I've also checked the temp after a minute of riding, stopping with no rear brake and the disc is too hot to touch.

I know really its too much, so will need to look at it more. I think the slider pins aren't letting the calliper slide enough (needs a good overhaul soon) but still would be interested in peoples' thoughts on how you gauge it.

Doinitmyway · 08-03-14, 04:41 PM

Any drag from the brake is too much. The wheel should spin freely and stop on its own. If it drags the disc will heat up, and eventually the caliper and then the fluid. When the fluid expands then you will have bigger problems!

Did you push the pads/pistons back in the caliper? I use a medium size (clean) pry bar to push them back in carefully. Always worth taking the pads out and smearing a bit of copaslip where needed when playing with a caliper.

Chris

08-03-14, 04:58 PM

My explorer was doing the same recently, bit of surface rust was the culprit in my case, the wheel should spin freely, take it for a longer ride and check what it's like.

08-03-14, 01:48 PM	#1
Fallout Member Mega Poster Join Date: Jan 2012 Location: Basingstoke Posts: 2,983	How much brake drag is too much? Does anyone have a rule of thumb on when brake drag is too much? I've just put a new rear disc on the tiger and it's not easy to spin the wheel freely. Probably does a quarter revolution with a good tug. I've also checked the temp after a minute of riding, stopping with no rear brake and the disc is too hot to touch. I know really its too much, so will need to look at it more. I think the slider pins aren't letting the calliper slide enough (needs a good overhaul soon) but still would be interested in peoples' thoughts on how you gauge it. __________________ MotoGoLoco - You knows it The Shed - Suzuki GSX-R 750 K1 \| Triumph Tiger 1050 K6 Fallout Bikes (VLogs, Tutorials, Bike Vids) Fallout Breakbeat (My Music)

08-03-14, 04:41 PM	#2
Doinitmyway Member Join Date: Jun 2009 Location: Nr Southend-on-Sea, Essex Posts: 154	Re: How much brake drag is too much? Any drag from the brake is too much. The wheel should spin freely and stop on its own. If it drags the disc will heat up, and eventually the caliper and then the fluid. When the fluid expands then you will have bigger problems! Did you push the pads/pistons back in the caliper? I use a medium size (clean) pry bar to push them back in carefully. Always worth taking the pads out and smearing a bit of copaslip where needed when playing with a caliper. Chris __________________ 10 GSX650F 95 BMW Funduro 89 FZR250R (x2) 92 RG80 (x2!) 89 AR125 - 89 RG125 75 CB200

08-03-14, 04:58 PM	#3
Specialone Guest Posts: n/a	Re: How much brake drag is too much? My explorer was doing the same recently, bit of surface rust was the culprit in my case, the wheel should spin freely, take it for a longer ride and check what it's like.

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