steve@banbury-trials Posted May 29, 2007 Report Share Posted May 29, 2007 well , im stumped i've grinded my rims several times whilst running onza citrus and rock pad green and it's work well untill i've invested in rock pads blues .i've given them a month of use and they seem to be getting worse even after a fresh grind ( med / light ) the rim i'm running is a try-all just incase this makes a difference.so what are your ideas to why im getting crap performance ?and how i can sort the problem?steve Quote Link to comment Share on other sites More sharing options...
hugh_b Posted May 29, 2007 Report Share Posted May 29, 2007 new grinding disk? My grind isnt really even sharp or harsh with my rock blue but they grab, hold and screech good. I really dont understand that, only thing i can thing is your grinding disk is dead but this doesnt normally make a difference. The pads havent got anything on them have they? How's the brake set up, are the pads sitting well on the rim or have you moved the break since you wore the pads in? -Hugh Quote Link to comment Share on other sites More sharing options...
Fishy Posted May 29, 2007 Report Share Posted May 29, 2007 Do you adjust your pads a lot? Quote Link to comment Share on other sites More sharing options...
steve@banbury-trials Posted May 29, 2007 Author Report Share Posted May 29, 2007 the pads are pretty clean and so is the rim ,i give them both a wash the other day .i set up my pads once and they are square to the rim.i'll give the rim another grind tomorrow if i find the time with a new grinding disk and i'll report back.steve Quote Link to comment Share on other sites More sharing options...
Fishy Posted May 29, 2007 Report Share Posted May 29, 2007 Might be contamination of the actual pad. My koxx browns did this and they went so shit, it was unreal. Quote Link to comment Share on other sites More sharing options...
Ewannnn Posted May 29, 2007 Report Share Posted May 29, 2007 Could of grinded your rim too many times? happened to me beforei wondered why my brake was crap as i had grinded it about 15 times and it got worse each time i grinded itgot a new rim and has been working well ever since Quote Link to comment Share on other sites More sharing options...
Krisboats Posted May 29, 2007 Report Share Posted May 29, 2007 Could of grinded your rim too many times? happened to me beforei wondered why my brake was crap as i had grinded it about 15 times and it got worse each time i grinded itgot a new rim and has been working well ever since The metal doesn't change the deeper you go into it, so grinding it more wont make a difference I'd say get a new griding disc, its pretty hard to mess a grind up using a brand new disc... change the disc over to use a fresh side at the same time as you flip your wheel over to grind the other side. Hold it between 45-90 degrees (i find 80'ish works best for me) then skim along the rim in strokes pressing firmly each time (my grinder actually changes pitch as it slows down slightly so i know its all going to be roughly as deep). You want to cover about 5-6 inches in each stroke... going quick enough to leave larger spaced grooves as apposed to closer grooves. Go round the rim skimming from left to right while going round the rim in a CLOCKWISE direction on each side.Should be wicked after that.In fact, should i make a decent tutorial video on how to grind a rim? Might help people out a bit. Quote Link to comment Share on other sites More sharing options...
tom 20 Posted May 29, 2007 Report Share Posted May 29, 2007 Should be wicked after that.In fact, should i make a decent tutorial video on how to grind a rim? Might help people out a bit.Could do, would answer quite a few peoples problems. Quote Link to comment Share on other sites More sharing options...
*PHIL* Posted May 29, 2007 Report Share Posted May 29, 2007 In fact, should i make a decent tutorial video on how to grind a rim? Might help people out a bit.Do It... Please Quote Link to comment Share on other sites More sharing options...
Rossi Posted May 29, 2007 Report Share Posted May 29, 2007 new grinding/cutting disc f'sho! when you've done one side of the rim, flip the grindin disc over. sand your pads down so theyre straight n flat, and glaze is removed. Main thing is to absolutely give your rim some serious grindage, don't be a wuss. then set brake up properly. Quote Link to comment Share on other sites More sharing options...
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