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Post by ellpee on Nov 15, 2018 10:21:36 GMT -6
My 2012 Magnum trike, which finally has about 2500 miles on it, is showing signs of brake grabbing, mainly from the rear brakes but a bit from the front too. Stops fine, even in hard braking mode, but it grabs intermittently before finally taking hold. Not a real sharp lock-the-wheels grab, just feels like the rotors are thicker in some areas than in others, which seems implausible at that low mileage. I'm generally okay with pulling the wheels and checking what's up, can't be that different from my truck brakes which I've done a couple times. but any suggestions on what I should suspect first and how I should go about checking it?
Oh yeah, there's a bit of a squeak associated with the grabbing, too, not a nasty metal-to-metal sound but just a little eek-eek-eek until the grabbing stops.
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Post by cyborg on Nov 16, 2018 7:43:58 GMT -6
It could be a varying thickness problem,( I doubt it because of the very low miles) but this condition usually happens at much higher mileage,,a soft spot on the swept area of the disc gets scooped out,,,it's more likely a slight warp in the disc
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Post by ellpee on Nov 16, 2018 9:22:20 GMT -6
So, cure? New discs, or get discs turned, or just live with it until it gets worse? Or other? This will likely be my December project. Hoping for all I'm worth that I won't need any new IceBear-specific parts, not fun or cheap to have to order anything from them.
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Post by cyborg on Nov 19, 2018 9:26:50 GMT -6
Have them turned
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Post by ellpee on Nov 19, 2018 9:34:44 GMT -6
10-4
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Post by bandito2 on Dec 3, 2018 21:48:47 GMT -6
Hmmm... late to this post... But I was just thinking, what if the disc was not actually warped nor thinner in a spot or 2 but rather mounted at an ever so slight angle?; like it might be if something were under say 1 or 2 of the disc mounting points actually causing the disc to be tilted... just a thought. (slight warp was my first thought as well)
Any comments on the plausibility of that theory?
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Post by cyborg on Dec 4, 2018 8:30:47 GMT -6
Hmmm... late to this post... But I was just thinking, what if the disc was not actually warped nor thinner in a spot or 2 but rather mounted at an ever so slight angle?; like it might be if something were under say 1 or 2 of the disc mounting points actually causing the disc to be tilted... just a thought. (slight warp was my first thought as well) Any comments on the plausibility of that theory? Good point bandito,,I've never have seen it myself but it's not out of the realm of reason that the hub is machined incorrectly,,but my money is on a slightly warped disc,,,had that happen on a bmw no less 3 times in a row same bike,,finally went with an aftermarket rotor,,I got tired of tearing the bike apart to change it,,, |
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