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tonker
Original Poster
43,748 posts
117 months
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Right, the Tiger's doing well, but the rear brake has started to 'chatter' at low speeds (8mph or less) as you come to a stop - when you use it at higher speeds it's smooth.
By chatter, I mean you can feel it as if the ABS is pulsing. It still seems to stop as it should. The front brake feels smooth and normal.The bike is a 61 plate and has done 5.5K - surely the pad can't be worn out and it's pad on disc yet (though I do use the rear brake a fair bit). I haven't had time to get down and see what state the pad is in - the Nissin calipers don't show you a lot of pad on first glance.... and I can't see any stones stuck in it and the disc doesn't look like it's scored to hell.
Is it a duff ABS sensor, is it a worn pad, more to the point, is it something I can leave for another 3 weeks till it's serviced ?
Ta as always
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Fleegle
10,634 posts
45 months
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Is it the pad not returning due to a sticky piston? How dirty is caliper?
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tonker
Original Poster
43,748 posts
117 months
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Fleegle said: Is it the pad not returning due to a sticky piston? How dirty is caliper? bike is clean. Caliper is also clean - well the visible bits are (it did get jetwashed and a bit of a rinse at the weekend).
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Fleegle
10,634 posts
45 months
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Does it actually feel like the ABS pulsing? If so it could be dodgy management or even a slightly warped disc
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LoonR1
12,431 posts
46 months
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That's today's lesson learned. I didn't know bikes had rear brakes.
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toxgobbler
2,284 posts
60 months
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LoonR1 said: That's today's lesson learned. I didn't know bikes had rear brakes. 
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tonker
Original Poster
43,748 posts
117 months
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you have one of those scooter things, yes, twist and go - so just one brake at the front meaning you can ride it in heels ?
does it feel like the ABS - yes, it feels as if the pedal is 'going up and down slightly', similar to when I kicked the ABS in on mud and the same as you get in a car, when you rely on the brakes to save you when you dive into a corner far far too quickly...
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Silver993tt
8,084 posts
108 months
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LoonR1 said: That's today's lesson learned. I didn't know bikes had rear brakes. funny isn't it that even Moto GP bikes have a rear brake and they're there for a reason - to be used.
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GTIR
19,072 posts
135 months
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I had a similar thing with my kids in the back seat of my car chattering away.
I found a good book shuts them up. Shades of gray is a good start.
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Speed addicted
1,860 posts
96 months
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It could just be deposits on the disc, do you take it for a spin to dry them off after washing it?
Try doing a couple of fairly hard stops from 50 just using the rear and seee if it clears up.
Don't you get a warning light when the ABS is triggered?
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Reardy Mister
11,039 posts
91 months
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Have you changed your footwear to something that reduces your feel and are therefore mashing the brake and locking it, without realising?
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Hooli
21,167 posts
69 months
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tonker said: you have one of those scooter things, yes, twist and go - so just one brake at the front meaning you can ride it in heels ? 
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Carl-H
750 posts
75 months
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I don't know much at all about bike ABS, but I'm sure cars are designed not to use ABS below 5-10mph (for in snow I believe). Maybe this is something similar where something's broke? Meaning the ABS is pulsing below the set speed?
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LoonR1
12,431 posts
46 months
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Silver993tt said: Funny isn't it that even Moto GP bikes have a rear brake and they're there for a reason - to be used. Didn't John Hopkins say that the rear brake should be painted red and marked for emergency use only? The rear on my bike isn't worth having, it does f  k all.
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sc0tt
7,415 posts
70 months
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LoonR1 said: Didn't John Hopkins say that the rear brake should be painted red and marked for emergency use only? The rear on my bike isn't worth having, it does f k all. Only ever used mine once, came in waaaaaay to hot on a roundabout. Glad its there.
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Reardy Mister
11,039 posts
91 months
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LoonR1 said: Silver993tt said: Funny isn't it that even Moto GP bikes have a rear brake and they're there for a reason - to be used. Didn't John Hopkins say that the rear brake should be painted red and marked for emergency use only? The rear on my bike isn't worth having, it does f k all. Same. I use it occasionally to level the bike when braking with a pillion on or to lean on in a tight u-turn, but thats about it.
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Hooli
21,167 posts
69 months
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Reardy Mister said: LoonR1 said: Silver993tt said: Funny isn't it that even Moto GP bikes have a rear brake and they're there for a reason - to be used. Didn't John Hopkins say that the rear brake should be painted red and marked for emergency use only? The rear on my bike isn't worth having, it does f k all. Same. I use it occasionally to level the bike when braking with a pillion on or to lean on in a tight u-turn, but thats about it. Bet ya ride sports bikes. It's much more useful on other styles of bike which still have weight over the rear when braking. /age old can of worms
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tonker
Original Poster
43,748 posts
117 months
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Speed addicted said: Don't you get a warning light when the ABS is triggered? Nope. I'll give it a whack on the way home.... See if I can get it to cut in. the other times I've had it on, I haven't had time to be looking at the instruments !
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Ray Luxury-Yacht
6,367 posts
85 months
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Hooli said: Reardy Mister said: LoonR1 said: Silver993tt said: Funny isn't it that even Moto GP bikes have a rear brake and they're there for a reason - to be used. Didn't John Hopkins say that the rear brake should be painted red and marked for emergency use only? The rear on my bike isn't worth having, it does f k all. Same. I use it occasionally to level the bike when braking with a pillion on or to lean on in a tight u-turn, but thats about it. Bet ya ride sports bikes. It's much more useful on other styles of bike which still have weight over the rear when braking. /age old can of worms  There's a quote from - if I remember correctly - Wayne Rainey in one of Keith Code's books, which says 'I occasionally use the rear brake when I pull into the pit garage...' Some do, some don't. When I was racing, I never did, but then again, I never ended up winning any BSB or WSB titles either, lol! Interestingly, Mick Doohan had his thumb operated rear brake fitted after his busted leg disaster at Assen in '93, and he used to talk about how useful it was to control wheelspin? And so, the argument rages on.....
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tonker
Original Poster
43,748 posts
117 months
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and the answer is, "worn out pad" - almost metal on metal.... I suppose I probably do make a lot of use of the rear brake, rather than the front in ordinary riding.... I tend to just use that to slow more gradually than grabbing at the front one..... so maybe I have just worn it out - what with it being a quarter of a ton of bike with a pot-bellied silverback on it.
I think I might have to take a bit more interest in that and check it rather more closely in future !
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