Freshman Rider
Currently Offline
Posts: 59 
Likes: 2
Joined: Jul 15, 2014 1:13:42 GMT -5
|
Post by scotttx on Aug 17, 2014 9:26:49 GMT -5
strange problem with my front brakes and thought I'd ask before tearing them apart. At first they're hard to squeeze, hard hard hard and then all of the sudden EASY! I dropped it on a dirt road the other day cause they locked up on me.
I planned on starting with the easy part, checking the pads and caliper pins. Then its the master cylinder. its a wildfire 150 and I think it has the pseudo anti-lock brake thingy on there also.
|
|
|
|
Post by shalomdawg on Aug 17, 2014 12:58:03 GMT -5
howdy, i'm just gonna say howdy since i know actually zilch. that does sound like further down the line however than the master cylinder unless it is a mechanical linkage to the master cylinder.
lotsa miles and smiles to ya
ken
|
|
Freshman Rider
Currently Offline
Posts: 59
Likes: 2
Joined: Jul 15, 2014 1:13:42 GMT -5
|
Post by scotttx on Aug 17, 2014 14:40:06 GMT -5
the more reading I'm doing about brakes it seems like what I'm seeing is the chinese abs going into action. that is completely stupid, you're in an emergency braking situation, you clamp down hard on the brakes and all the sudden you have no pressure your instinct is to squeeze even harder!
|
|
|
|
Post by geh3333 on Aug 17, 2014 21:11:30 GMT -5
I would swap the whole system out for a normal front caliper without abs. There are even many cars that have come out with an abs system that has been terrible " like the 1996 dodge stratus " . And many others . People have tried to stop at stop signs and the brakes have just started jumping even though the road was clear of all debri and no speeding involved . " I've seen them in action" Some tend to be way to sensitive .
|
|
|
|
Post by pmatulew on Aug 18, 2014 5:45:11 GMT -5
Dirt road? I live there too.
Brake problems? Let me count the ways....
Check the brake lever for proper lubrication. The hinge pin and the lobe where it contacts the master cylinder piston. The chrome levers tend to wear on the back side and may need to be smoothed off. Check the master cylinder. When was the last time you changed the fluid? Brake fluid absorbs water over time and becomes corrosive. Check the brake pads to make sure they're not jammed somehow. That's less likely on a bike than a car, but you never know. Then check the pistons in the caliper. You should be able to push them back in the bores with your thumbs. They get crudded up on the outside from dirt and get crudded up on the inside from corrosion of the aluminum and galvanic action between the aluminum and the steel pistons. If they won't move freely then it's time to rebuild or replace the caliper assembly.
|
|
Freshman Rider
Currently Offline
Posts: 59
Likes: 2
Joined: Jul 15, 2014 1:13:42 GMT -5
|
Post by scotttx on Aug 18, 2014 11:01:46 GMT -5
so in other words, everything! I just bought it a week or so ago (only 500 miles on it) and I've been going over it top to bottom. this was just a test drive after lots and lots of work. I sure would like to ditch that abs though. if its as simple as taking it off and plugging the hydraulic line directly to the brake consider it done.
|
|
|
|
Post by geh3333 on Aug 18, 2014 21:01:25 GMT -5
Can you take a pic of the caliper ?
|
|
|
|
Post by alleyoop on Aug 18, 2014 21:44:26 GMT -5
They are not ABS, it is the CYLINDER that limits the amount of fluid it allows to pass. All it is is a valve that works on pressure. You can take the Cylinder off(ABS) and connect the brake hose where the cylinder was screwed into. You will have to get a connector to replace the cylinder. On some they have a cap on the bottom and taking the cap off is a allen screw if you turn it clockwise it doesn't turn much maybe a full or less of a turn but it allows full pressure to flow. Alleyoop   |
|
|
|
Post by geh3333 on Aug 18, 2014 21:54:32 GMT -5
That's the abs ? Lol. I'm guessing we all have fake abs . Lol never had a problem with mine . If he does this won't they possibly lock up on him ?
|
|
|
|
Post by alleyoop on Aug 18, 2014 22:01:25 GMT -5
Any brakes will lock up on you if you crank on them if they are not abs, so you have to use them as just a regular brake and not crank on them. If someone doesn't think they can handle it leave it alone. Remember they only came out with these not to long ago so there are plenty of scoots without this already.
Alleyoop
|
|
|
|
Post by geh3333 on Aug 18, 2014 22:06:40 GMT -5
My front brakes have never even came close to locking up , I've had my front wheel slightly slide going around a turn with gravel " of course no front brakes applied in the turn " Ive jammed on them pretty hard a few times . I'd think there would be a better chance of this happening " only makes sense "
|
|
Freshman Rider
Currently Offline
Posts: 59
Likes: 2
Joined: Jul 15, 2014 1:13:42 GMT -5
|
Post by scotttx on Aug 18, 2014 22:23:18 GMT -5
from what I've seen working on this bike I dont think I'd trust them to get abs right (even fake). some of the half assery I've found is just comical.
|
|
Sophomore Rider
Currently Offline
Posts: 117
Likes: 9
Joined: Apr 5, 2013 0:43:47 GMT -5
|
Post by bvance554 on Aug 18, 2014 23:13:06 GMT -5
I do not have 'ABS' and I have never come close to locking up the front brakes. Do as Alley said and remove the valve and hook your brake line directly to the calliper.
|
|
|
|
Post by geh3333 on Aug 19, 2014 1:10:10 GMT -5
U can always just try it ,something is obviously wrong with your front brakes they shouldn't act like that . Just be careful at first until u see how they feel and react without that valve . If what alley says is true " which I have no reason to suspect otherwise " then the brakes will react much quicker and possibly stronger then before .
|
|
|
|
Post by pmatulew on Aug 19, 2014 5:40:34 GMT -5
Yup, fake ABS. Real ABS requires a gear wheel or a magnetic toner ring and a wheel speed sensor and and a computer controlled master cylinder that has the capability to release the brake fluid pressure fifty times a second if it senses the wheel not turning the same speed as the other. None of which you're going to find on scooters at this price point.
Keep it simple. Pull that s!@# off there and connect the brake line direct. Then go through the rest of the checks to see whats' up. No reason for nearly new brakes to behave as you describe.
|
|
..BAD TO THE BONE..
