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Post by airnerd on May 12, 2007 8:43:55 GMT -5
Hello...i have the sqeakiest brakes on my 150.
I have front and rear disk brakes.
Has anyone got a fix for this horible squeaking???
Thanks, Nerdie
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Post by fulltimerart on May 12, 2007 17:42:13 GMT -5
 Stop at your local auto parts house and get a small container of "disc brake anti squeal". Its a thick blue liquid that you put on the pad backing plates after removing them, let it dry and re-install them. Usuall shuts them right up. Art
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Post by jackthefuzz on May 12, 2007 21:43:32 GMT -5
yup and if that doesnt work, get a bigger hammer LOL, seriously anti squeel will work
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Post by Dennis D on May 13, 2007 8:35:46 GMT -5
Yours might be worse than most since you had to leave it outside tied to a tree all winter long. ;D
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Post by airnerd on May 13, 2007 22:31:31 GMT -5
ahha Dennis...i found a lonly garage with just a mower in it..she cammped out there..but yes now is back tied to the tree lOLOLOL
Also she has 1200 miles on her now and wont start at my freinds house (so acctuallt she found another garage to camp out in for a bit)
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Post by fulltimerart on May 14, 2007 18:24:15 GMT -5
Ah-So. Old Chinese proverb--"squeaky brakes cause no start" Or something like that. Art
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Post by airnerd on May 14, 2007 22:37:32 GMT -5
huhu silly
it started right up...must have been flooded or bad gas? it now misses on takeoff and some in accelerateing..it stalled a few times on take off and has been kinda hard to start sometimes???
any moere suggestions as i serch this place
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Post by swampsniper on May 14, 2007 23:02:12 GMT -5
Stop at your local auto parts house and get a small container of "disc brake anti squeal". Its a thick blue liquid that you put on the pad backing plates after removing them, let it dry and re-install them. Usuall shuts them right up. Art It shut mine up, but it has stopped working, after about 1500 miles. When I do it again I want to try stoning the back of the pads, to make sure they are dead flat. |
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Post by Dennis D on May 15, 2007 8:54:57 GMT -5
What spark plug is in it? Original chinese? If so, you might try putting in an NGK CR7HSA or CR7HIX plug.
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Post by airnerd on May 15, 2007 18:27:15 GMT -5
Dennis, YES it is the Chinaspark...im looking into the plug soon..crappy weather here.
oh btw when i get the spark plug i will also buy some brake quiet, LOL
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Post by airnerd on May 16, 2007 21:09:42 GMT -5
Well i bought some spray on the disk stuff and WHO HOO it werked! well for about 60 miles then some squeekage
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Post by swampsniper on May 16, 2007 22:43:53 GMT -5
Well i bought some spray on the disk stuff and WHO HOO it werked! well for about 60 miles then some squeekage I may try lapping the back of the pads flat this weekend, and see if that helps. My front brake squeals so bad some times that little kids on the sidewalk scream. |
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Post by kozinator on May 23, 2007 13:35:45 GMT -5
Hey Airnerd,
As for your scoot runnin bad, I don't know if this will help with your problem, but I had a similar problem that started last fall. I tried all kinds of things to get the scooter runnin' right and nothing seemed to work. I replaced all the fuel and vacuum lines with better quality lines. I even installed an electric fuel pump thinking I was having a fuel flow problem. The last thing I did was to put a brand new NGK spark plug in and I installed a brand new Bando CDI and coil, and voila, she now runs great!
BTW, I've had a brake squeeling problem as well. Everything I've done only works temporarily. I guess I'll try swampsniper's suggestion and grind the back of the pads flat. Can't hurt!
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Post by airnerd on May 23, 2007 17:58:11 GMT -5
Thanks K...its running MUCH better now.
1500 chinometers and the spark plug was white at the end.
Yea the squeakyness comes back after riding for a while now...I think i glazed them over the first few stop when i got it.
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Post by fulltimerart on May 23, 2007 20:09:32 GMT -5
If the pads are glazed, take a piece of 80 grit sandpaper and lay it on a flat surface and rough up the pad on it a little, you can also rough up the rotor to get rid of any shineness on it- just hold the sandpaper against the rotor and spin the wheel . Also make sure there is no road dust or grit in the cooling holes in the rotor. Art
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Post by beaugator on May 27, 2007 9:03:13 GMT -5
Roughing up the pads with the 80 grit is OK and usually all it takes... don't do the rotor that way, use brake cleaner and scotchbrite! If that doesn't work, take it off and have it bead blasted. Costs about $10 most places that do it. If the pads are glazed, take a piece of 80 grit sandpaper and lay it on a flat surface and rough up the pad on it a little, you can also rough up the rotor to get rid of any shineness on it- just hold the sandpaper against the rotor and spin the wheel . Also make sure there is no road dust or grit in the cooling holes in the rotor. Art |
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Post by tortoise on Dec 12, 2007 22:20:17 GMT -5
Almost nine dollars for a little 2-ounce spray can at NAPA Auto Parts, but Squeak Relief worked as advertised . . although time will tell for how long. Related article . . Silencing Disc Brake SquealNAPA# BK 7652631  |
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Post by loudest143 on Dec 14, 2007 10:28:39 GMT -5
Great thanks for the anti squeal blue goo stuff. I will be using that during my spring tuneup session... BTW, my front disc brakes seem to rub... Specifically, when I pull the lever, it doesn't seem to release quickly and fully. I removed the brake assembly from the bike to test this, and sure enough, it seems that it will not return to what I would think is an "original" non-friction causing position. Is this a symtom of the cheap chinafluid or just a simple adjustment? The friction makes that sucker sing like a bird at speed. And by bird I mean friggin loud squeaking noise.
Loudest143
*Squeaky McSqueakerton
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Post by swampsniper on Dec 14, 2007 10:38:41 GMT -5
There is no return mechanism on disc brakes, some very light contact is normal. Your pistons may be binding if you are getting interference.
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Post by scooterollie on Dec 14, 2007 12:54:48 GMT -5
Like Swamp said, a little drag when spinning the wheel while off the ground is normal. Many disc brakes also make a squealing noise when applied to stop the vehicle. This has plagued disc brakes since they were invented. Pad formulation and various anti-squeal shims and coatings have been used, with some degree of success, to reduce or stop this phenomena.
Any noise from the disc brakes at speed is abnormal, especially as you describe it. If you have an excessive amount of drag then either there is a blockage or malfunction somewhere that is preventing release of brake pressure when you let go of the lever. The problem could be in the caliper, brake hose (de-lamination of a flap of rubber inside the hose that acts like a one-way valve) or master cylinder.
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Post by rverr on Dec 14, 2007 18:37:37 GMT -5
8-)Had the same brake squeal on our LONGBO 150 tryed all the ''FIXES'' listed finally removed the ANTILOCK valve[ this is not emissions related is it?'' no more squeal or draging brakes . works for me. KEEP ON SCOOTIN!!!
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Post by motomech on Feb 27, 2008 1:18:50 GMT -5
I really don't like the automotive Disc Quiet type products for motorcycle brk.s. It makes cleaning the inside of the caliper during the next pad install, a real PITA.
I prefer a good quality water-resistent grease(Bel Ray, because it's pretty). Apply it to the piston/pad contact area, the sides of the pads where the ride in the caliper and the pins. Obviously, one doesn't want to get it on the pad surface.
The only area of the pad that should be taken to grinder, is the sides for a little clean up.
I know it sounds counter intuitive to use grease on brakes, but the caliper doesn't get hot enough to melt the grease and it just congeals.
Brk. squeal is a function of the pads vibrating in the caliper and the Disc Quiet glue or congealed grease dampens and seals this interface.
Motomech in Costa Rica
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Post by voyager250cc on Mar 3, 2008 3:31:41 GMT -5
Hey Airnerd, Ate] in the )OLDEN) days a trick which worked on brake pads was to cut a piece out of a tin can and put it between the pad and piston,changed the resonate frequency or somethink |
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Post by boldastard on Mar 3, 2008 10:11:51 GMT -5
Don't know how applicable this is to scoots, but grinding or filing a slight chamfer into the leading and trailing edges of the pads has proved to be a pretty effective squeal-stopper for most of the cars I've owned. Probably is most relevant when dealing with new pads with sharp, squared-off edges, but may be worth investigating. Anyhow, here's a link to an automotive website dealing with squeaky brakes: www.aa1car.com/library/2004/bf80426.htmRegards, BA |
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Post by scooterollie on Mar 3, 2008 21:14:08 GMT -5
As voyager said, use of a shim was common practice. Paper thin brass sheets cut to pad size work well. So does baldastard's suggestion. Some disc brakes just plain squeak, some don't.
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Post by tortoise on Mar 29, 2008 14:58:12 GMT -5
Almost nine dollars for a little 2-ounce spray can at NAPA Auto Parts, but Squeak Relief worked as advertised . . although time will tell for how long. The initial application lasted around 3 months on a 50cc that is used year around several times a week for local errands. Spraying a little on a foam brush, and re-applying it to the disc while spinning the wheel worked out very well.   |
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Post by dtwscooter on Apr 25, 2008 14:11:40 GMT -5
Tortoise, so the spray goes directly on the disc? Does that affect braking performance?
Btw, I thought your scooter was silver in color? I read your write up and the accompanying pictures..,
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Post by tortoise on Apr 25, 2008 16:17:08 GMT -5
so the spray goes directly on the disc? Does that affect braking performance? I thought your scooter was silver in color? Yes . . the purpose is to fill in surface irregularities. I believe SqueakRelief does affect scooter braking performance slightly, especially just after application. I have owned the red 50 since September 2005, and the silver 150 since April 2007.  |
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Stop at your local auto parts house and get a small container of "disc brake anti squeal". Its a thick blue liquid that you put on the pad backing plates after removing them, let it dry and re-install them. Usuall shuts them right up. Art
