craigjames Posted July 27, 2006 Report Share Posted July 27, 2006 right ok, i'm running heatsink blues, on a maggy with evo adapters on a d521 rim. clean everything up rim, pads etc. pistons lubed and movin fine. but after about 2 minuts of the brake bein set up pretty damn well and screamin like a banshee it goes all quiet and the grab and the bite go. i take the pads out and there covered in blacl/silver dust. surely this cant be rim dust as i cleaned it all down and its only literally 2 minutes after that it stops workin.the brake works amazin whilst its screeching but as soon as it stops the brakes a great big pile of poohelp!! is there anything that im probably doing wrong, should the pads be covered in this dust after such a short period?cheerscraig Quote Link to comment Share on other sites More sharing options...
mat hudson Posted July 27, 2006 Report Share Posted July 27, 2006 is it black on the rim too? i used to get it from riding wet natty. Quote Link to comment Share on other sites More sharing options...
craigjames Posted July 27, 2006 Author Report Share Posted July 27, 2006 (edited) is it black on the rim too? i used to get it from riding wet natty.nope completely clean rim before and after, that whats confusing me?!!!i'm a fair weather rider, mainly because i can't get the damn brake to work for more than 5 minutes! Edited July 27, 2006 by curly_freak Quote Link to comment Share on other sites More sharing options...
mat hudson Posted July 27, 2006 Report Share Posted July 27, 2006 when in doubt.............. smother it in tar. Quote Link to comment Share on other sites More sharing options...
craigjames Posted July 27, 2006 Author Report Share Posted July 27, 2006 hmmmm could do i spose, that or a grind, but thats really a last chance thing, would prefer to keep the old rim smooth, but hey maybe thats me.anyone else have any ideas? Quote Link to comment Share on other sites More sharing options...
Krisboats Posted July 27, 2006 Report Share Posted July 27, 2006 Dont use white spirits to clean the rim Use something like mr sheen, makes the rim much better for braking on. But the heatsink blues are really much better on a grind. Quote Link to comment Share on other sites More sharing options...
craigjames Posted July 27, 2006 Author Report Share Posted July 27, 2006 i used one of my dads ge greasers which he said left no residue.maybe i will have to put i grind on it then, hmm not too confident about it though, have to practice on a old wheel firstjust noticed that master cylinder istn coming out properly, its lubed and cleaned, its omces out several times and retracts as normal and then just stays out, dont think this would help but i think the main problem is the pads...? Quote Link to comment Share on other sites More sharing options...
downhill_rob2@hotmail.com Posted July 27, 2006 Report Share Posted July 27, 2006 just noticed that master cylinder istn coming out properly, its lubed and cleaned, its omces out several times and retracts as normal and then just stays out, dont think this would help but i think the main problem is the pads...?Nah, that will be the TPA most likly.Turn the TPA right off, and then take brake off the bike.Get pads off of the maggy, put angle grinder facing upwards on the floor, and just "touch" the angle grinder with the surface of the pad. do this intill the whole surface of the pad is shiny.Now get your rim, and put a nice light grind on it See what happens to your brake then If you have never had/used a grind, i can GUARANTEE you, it will be AMAZING. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 27, 2006 Report Share Posted July 27, 2006 Light grind and clean pads is the way to go for best performance...The only way you'll get a good brake for any amount of time with a totally smooth rim is to clean it all the time unfortunately - the pads pick up bits of rim (that's the grey stuff on your pads) quite easily. Quote Link to comment Share on other sites More sharing options...
Peace Posted July 28, 2006 Report Share Posted July 28, 2006 grrrrrrrrrrrrrrrrrrrrrrrrrriiiiiiiinnnnnnnddddddd Quote Link to comment Share on other sites More sharing options...
bonzojim Posted July 28, 2006 Report Share Posted July 28, 2006 hi, i agree give it a light grind and it should sort it out, no need for loads of tar.i use a light grind and yellow plaz pads no probs. Quote Link to comment Share on other sites More sharing options...
liam-pantera Posted July 29, 2006 Report Share Posted July 29, 2006 I dont agree the problem is your pads , some heat sinks are defective and have a horrible sticky glue inside wich appears to be black it makes your brake stick and u lose power the best way to get rid of this is by using a softer pad i would say use a spanish fly pad and tar or some monty pads and tar. Last resort but a awsome brake is to put a light grind on sand till almost smooth and use zoo pads its the best brake ever i swear to god good luck mate . Quote Link to comment Share on other sites More sharing options...
Mark W Posted July 29, 2006 Report Share Posted July 29, 2006 I dunno, I just found my Heatsink blues to be pretty turd no matter what I did. That was for the 3 1/2 hours I got out of them before they wore down 3mm out of the 5mm I had, anyway. Quote Link to comment Share on other sites More sharing options...
Heatsink Posted July 29, 2006 Report Share Posted July 29, 2006 Hi,I hope you find a way to eliminate the black gunk that's reducing the grip of your pads. I never did myself back in the days before Heatsink Pads. The continual need to clean the smooth rims was eliminated once I started grinding my rims.Replying to your message Mark, I've got to the bottom of this problem now. The way I was degreasing the earlier pads for glueing (including the free extra slim pads I sent you back in the day) meant some were exposed to the degreaser for a unnecessary long period and that weakened them - it's powerful stuff!In the very rare instances that you have defective pads, my customer care is the same as always; simply get in touch via email and I'll replace the pads. I hope that this gives you peace of mind!SteveI dunno, I just found my Heatsink blues to be pretty turd no matter what I did. That was for the 3 1/2 hours I got out of them before they wore down 3mm out of the 5mm I had, anyway. Quote Link to comment Share on other sites More sharing options...
Mark W Posted July 29, 2006 Report Share Posted July 29, 2006 Ah, fair enough Steve Quote Link to comment Share on other sites More sharing options...
craigjames Posted July 31, 2006 Author Report Share Posted July 31, 2006 cheers for you help guys think i mite have to give a grind ago, as im sick of cleaning the rim and then rubbin the pads clean with wet and dry all the time. mite get some heatsink reds and switch the blues to the front.bit scared on the grinding front its a good job ive got lots of old wheels from my downhilling days.cheers very muchcraig Quote Link to comment Share on other sites More sharing options...
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