shine2000

the brake pads are v brakes,this pair

the are fairly new about 2 months.but i noticed when i brake the front brakes with the bike still i get this "sponge sound echo"kind of like box spring making noise i guess.i think its on one side of the front brakepads because when i hold the lever down the front edge of the brakepad goes way further down than the other 3 brakepads.

the solutions i have tried are...
cleaning the rims with soap and water and sanding the brakepad with sandpaper and then cleaning it with rubbing alcohol.
i made sure the brakepad was toe in was correct,i can say it is because the other 3 make no sounds.

Andrew R Stewart 

Those pads look great!

Spongy feel can be from the pads not contacting the rim flat, evenly and fully. If the pads have toe in (more is worse) the arm/pad flex with increased lever pull. So a soft feel results with little difference between no pad/rim contact and increasing contact. Not sure what sponge noise means, but a common cause of pad/rim noise (other then squeal) is bits of rim or grime embedded in the pad's surface.

If the brake pad initially contacts the rim well but with increasing lever pull the pad seems to "travel" down the rim's track then the pad/arm/pivot relationship isn't best. The pad is positioned so that the arm has traveled over center and the pad is now arcing down with arm swing/ If the pad is angled down when initial has been made then this further "ramps" the pad down the brake trach towards the spokes.

Pads can and do wear, sometimes unevenly due to bad rim contact alignment and/or more rubbing. Maybe one rim side has more grime on it. Maybe chain lube and the collected grime. I've seen pads wear down past "standards" in only a few days of really wet or sloppy conditions and lots of use.

Since pads are so low cost relative to not stopping well() I suggest replacing them if in doubt. Today's pads are so thin that not too much thickness loss equals worn out. Without actual photos of the pads "in situ" I can't really say much more. Andy

EdwinHeadwind

Put a drop or two of Tri-Flow on the brake spring at points of contact.

fietsbob

the MA leverage may not be something you are used to ..

2 finger brake levers feel firmer than if using a 4 finger lever..





..

Lazyass

You aren't supposed to toe-in v brakes. The pads are asymmetrical, meaning longer at the rear. The squeek sound you're hearing is from the springs or some other metal to metal contact so lube them as posted above.

tyrion

This sounds like a problem. Something is setup or adjusted incorrectly, but I can't tell what it is. FWIW it's easier to get it setup correctly with the tire off the rim so you can easily see how the pads contact the rim. You want symmetry here - similar open gap on both sides, contacting the rim at roughly the same time and point.

p.s. I do toe in v-brakes, especially if the brake pads are the longer ones like the pictured Jagwires.

Also: are the brake pad spacers set up consistently? You'll notice there's a fatter spacer and a thinner spacer on the brake pad bolt. You can put the fat ones on the inside or the outside of the arm connection to get the best fit, but be consistent.

shine2000

yes the spacers are correct to my knowledge.also i just put some dry lube on the brake noddle in the upper part of it on the edge and it solved half my problem of now it could just be i need new brakes maybe?

EdwinHeadwind

That sounds like a twenty-dollar solution to a ten-cent problem, as my dad used to say, but you'd be sure to solve the issue. Personally, I'd ditch the Jagwire pads for some Kool-Stops first.