Double H Sintered PADS

[Seaking]

I just changed out my rear brake disc this morning.. the previous 2 owners had gone metal on metal on the pads a few times, mostly because the inner pad wears out twice as fast as the outter one and yes, *I* even got caught like that on a road trip. I checked my pads and thought I had tons left.. but the inner pad wore out and I too found myself metal on metal on the inner rear disc. wow.. Bummer. Every time I had changed pads, I found the inner one tons thinner than the outside one.. Many of you had observed the same thing here. When I bought the bike, it was 2 years old, 20,000 miles on it and the rear disc was quite worn.. but wasn't something I really took notice of, the mechs told me "meh, seen worse but it's OK"..

 

So I replaced the rear brake disc because it needed to be and mostly because I found a new one at a price you simply couldn't sneeze at.. I also replaced all the pads with the Double H Sintered pads from EBC.

 

Last summer, when I replaced the rear pads, I did so with Double H Sintered pads.. I asked the shop to keep the pads for me for later examination.

 

What was surprising is that there is no way to tell which was the inner and which was the outer pad, after 15 to 20,000 miles on them.. And I'm a heavy rear brake user because of the courses I do and the style of riding I do.. Well.. how about that.. And the pads were not even half used up yet.. But they were the same equal thickness.. Hmm how about that??? To me this is interesting. There is enough pad left to have finished off the summer on them easily..

 

What I will be monitoring this summer is how much brake disc material gets eaten up by the Double H pads. Someone had mentioned to me that you will sacrifice premature wear of the disc for using those pads. But you also get better braking (wow, I found that out on the way home today!)

 

I have my shop note book of what and when I've done anything to the bike so I'll be able to keep a better record as to how much wear and tear is offered on the disc because of these pads.

 

Based on what I observed on the first set of pads off this bike, I think I made the right choice..

 

However, your mileage and opinion may differ.. I'm not saying this is the absolute best route to take but it seems right to me based on what I saw and experienced..

 

I'll let you know if this worked out or not later this summer.. Field reports and such etc

[Sylvester]

I use EBC double H sintered pads and I can tell the inner rear wears more than the outer. I change the two around at every oil change to keep them wearing even.

 

[Seaking]

I use EBC double H sintered pads and I can tell the inner rear wears more than the outer. I change the two around at every oil change to keep them wearing even.

 

See, that's odd how it wore unevenly on yours but evenly on mine.. but all previous OEM pads were uneven.. strange.. "knock on wood" it remains the same.

 

Have you noticed above normal wear on your discs by using the Double H pads?

[Sylvester]

I have always used EBC double H pads.

 

[Seaking]

I have always used EBC double H pads.

 

 

What's the long term prognosis? Do they tend to eat down the discs prematurely?

[skydoc_17]

There may be some confusion here as to the statement that HH sintered pads will decrease the life of brake rotors on Second Gen. RSV's and RSTD's. The First Gen. VR's had brake rotors that were made from an alloy that was MUCH SOFTER than the Stainless Steel Alloy the Second Gen. Rotors are made from. Because some of the stock rotors are no longer available from Yamaha for the First Gens. any more, using HH Sintered pads increased brake performance but shortened the life span of the First Gen. stock rotor significantly. Since the Second Gen. rotors are made from a tougher alloy, You will get more miles from the rotor before it becomes to thin to pass inspection but any time you have two friction surfaces coming together, you are going to have wear. When you increase the abrasive content of the brake pad, (better stopping power) you decrease the life of the rotor. If this increased stopping power means the difference between stopping one foot behind a car in front of me or going thru the back windshield, I will deal with the thin rotor when the time comes.

I have one more comment to make about uneven brake pad wear, there is NOTHING inside a brake caliper that retracts the pistons after you apply the brake. If you have uneven brake pad wear then the pistons on that side of the brake caliper are sticking and leave the brake pad in contact with the rotor. PERIOD. This kind of neglect causes more damage to brake rotors than any HH Sintered pads ever will. After all, you RSV owners along with that high tech. Cassette deck, are running a rear caliper technology that was designed over 25 years ago! (two piece caliper body) and every other decent sport bike on the planet has gone to the one piece, multiple piston, progressive brake calipers.

Sad, but TRUE!

Earl

[Condor]

There may be some confusion here as to the statement that HH sintered pads will decrease the life of brake rotors on Second Gen. RSV's and RSTD's. Earl

 

One of the reasons that the 2ndGen's have uneven wear is they don't have caliper pistons on the inside. The calipers are a two piston set up on the same side.... No sticky pistons like we get on 1stGens....

[skydoc_17]

Hey Jack,

You are correct that the FRONT brake calipers are two piston calipers on the Second Gen. bikes, (who's Idea was THAT!) but if you take a closer look on your new to you Second Gen. you will find that you have a two piece, 4 piston caliper on the rear of your scoot that is basically identical to the two piece, 4 piston caliper on your First Gen. VR. This is the caliper that Seaking was talking about in his post and this is why I said that the rear brake caliper on a Second Gen. was 25 year old technology, because it is. I'm sure you have been so busy riding your new scoot (as would I) to investigate this and it would only be a matter of time before you would discover this for yourself.

Earl

[1BigDog]

Yep. 4 pistons on rear. Just rebuilt my rear caliper. Fronts are two piston floating design.

[Condor]

I'm sure you have been so busy riding your new scoot (as would I) to investigate this and it would only be a matter of time before you would discover this for yourself.

Earl

 

Yeah... Of course you're right Earl. Open mouth, insert foot..... DOH!! I didn't realize the 2ndGens were so old fashioned.... Maybe that's why they lock up so often. Old 1stGen technology is too much for a 2ndGen to handle....

[Dave77459]

Last summer, when I replaced the rear pads, I did so with Double H Sintered pads.. I asked the shop to keep the pads for me for later examination.

I used EBC sintered pads on my Suzuki and love them. Thanks for reminding me to get these for my RSTD, because it'll need them this summer.

 

But... are you having the shop change your pads? Say it ain't so!

 

Dave

[Seaking]

Since the Second Gen. rotors are made from a tougher alloy, You will get more miles from the rotor before it becomes to thin to pass inspection but any time you have two friction surfaces coming together, you are going to have wear. When you increase the abrasive content of the brake pad, (better stopping power) you decrease the life of the rotor. If this increased stopping power means the difference between stopping one foot behind a car in front of me or going thru the back windshield, I will deal with the thin rotor when the time comes.

clipped

are running a rear caliper technology that was designed over 25 years ago! (two piece caliper body) and every other decent sport bike on the planet has gone to the one piece, multiple piston, progressive brake calipers.

Sad, but TRUE!

Earl

 

I like that first statement.. expensive as discs are, I think it would be a long time before they need to be changed.. mine needed changing due to the previous owners' metal on metal contact for too long.

 

But your second statement scares me.. 25 yr old technology on a new bike? I thought I had Yamaha, not a HD?