Grinding Technique

[Duncy H]

I know you see a lot of these threads but I cant find exactly what I'm after from searching through. I can't get my brake to hold very well, or not enough for the way I ride. Anyway I think it is because of my grinding technique because it does not seem to be particulary sharp when I do it and goes blunt easily.

brake spec:

Echo team frame with built in booster,

08 magura

zoo lever

Phat pads

Trialteh 2 bolt booster

Tensile mounts

Try all rim

Now as I run phat pads ill need a deep harsh grind to get the best performance, but I cant get it. I have just a cheapo angle grinder from halfords with one of the thinner cutting discs. Could it be a bit worn or are there better ones?

Any help would be much apreciated.

Oh and if any of you have noticed ive said i have a broken wrist it should not effect it too much as i have a bit of flexibility.

[Mat Smith!!]

Grind it the opposite way and at more of a steep angle, re bleed and set up square, try taking the booster off aswell, sometimes improves the brake, leave the pads to bed in for a day or 2, without moving it no matter how bad it is .

[Ali C]

hmm, I never personally found that compound to have great hold, they have bags of bite and noise, but not hold hence why I am not running it even though I have a small basket full of the pad compound.

[Dave Anscombe]

I Use a 4 mm thick cutting disc......gives a deep harsh grind with little effort.......keep the booster on .Booster means less flex thus giving more hold in the brake

Grind at 90 degrees pushin to the rim and brush at the same time set pads up square to the rim give them time to bed in

Phat pads do hold well mine do

Dave x

[Ben John-Hynes]

A few months ago I was running a booster on my zoo, the brake was shit. I then took the booster off and my brake is just stupidly good. Seriously, give it a go!!

[hdmackay]

Using a booster usually increases the hold but decreases the bite.

[Duncy H]

I Use a 4 mm thick cutting disc......gives a deep harsh grind with little effort.......keep the booster on .Booster means less flex thus giving more hold in the brake

Grind at 90 degrees pushin to the rim and brush at the same time set pads up square to the rim give them time to bed in

Phat pads do hold well mine do

Dave x

What do you mean by brushing it? Do you press on hard?

A few months ago I was running a booster on my zoo, the brake was shit. I then took the booster off and my brake is just stupidly good. Seriously, give it a go!!

I ran it without a booster for ages but its been much better since I put the booster on.

[forteh]

When Im grinding I dont put any force into it, just use the weight of the grinder itself; this gives a lighter grind and will make your rim last longer.

To get a harsh grind use the wheel perpendicular (90 degrees from the rim) and sweep round in 6-8" sweeps. To get a lighter grind, tip the grinder towards the direction to travel (I use about 45 degees) and sweep the same way.

AliC explained that medium/light grinds are better than harsh because once a grind has gone blunt you have to regrind it again anyways, this means with a harsh grind youre cutting out alot of the material and you will get less grinds from your rim; with a lighter grind you dont have to take so much off the rim to achieve a sharp grind again

[Krisboats]

http://www.trials-forum.co.uk/forum/index....aded&start=