HJS Posted August 9, 2011 Report Share Posted August 9, 2011 Hi everyone, I was just wondering how and what the best way to grind a rim is? I currently use tar on my rims, but its a pain having to keep putting more on, so i was thinking of grinding my rim. I was also wondering what the best pads would be because i currently have the standard Magura HS33 pads and i have a feeling they will wear down very quickly with a grind. Thank you very much, Harry Quote Link to comment Share on other sites More sharing options...
DeVal Posted August 9, 2011 Report Share Posted August 9, 2011 chekc out the video guides on tartybikes.com they do a good job of explaining grinding and give a small demo! Quote Link to comment Share on other sites More sharing options...
forteh Posted August 9, 2011 Report Share Posted August 9, 2011 As above, check out the tartybikes videos for technique. I personally use (and rate very highly) heatsink yellows on a light/medium grind; I use the grinder at a shallow angle, about 20-30° away from the rim and use very little pressure to give a light grind. I use 1mm thick metal cutting disks but always use one with a fresh square edge, once it start to wear the ability to give a sharp grind diminishes. Quote Link to comment Share on other sites More sharing options...
Maxx Posted August 9, 2011 Report Share Posted August 9, 2011 As above, check out the tartybikes videos for technique. I personally use (and rate very highly) heatsink yellows on a light/medium grind; I use the grinder at a shallow angle, about 20-30° away from the rim and use very little pressure to give a light grind. I use 1mm thick metal cutting disks but always use one with a fresh square edge, once it start to wear the ability to give a sharp grind diminishes. 1mm ! I'm scared when I use 2.5mm so 1mm ... Quote Link to comment Share on other sites More sharing options...
piperfraz Posted August 9, 2011 Report Share Posted August 9, 2011 It's been said already. Watch the guide on tartys website. Make sure you wear goggles Quote Link to comment Share on other sites More sharing options...
forteh Posted August 9, 2011 Report Share Posted August 9, 2011 1mm ! I'm scared when I use 2.5mm so 1mm ... Thats why I never put any significant force into the grinder, flexes more than enough without! Make sure you wear goggles Absolutley +1 Quote Link to comment Share on other sites More sharing options...
Maxx Posted August 9, 2011 Report Share Posted August 9, 2011 and how many grind last one of your disc ? Quote Link to comment Share on other sites More sharing options...
forteh Posted August 9, 2011 Report Share Posted August 9, 2011 and how many grind last one of your disc ? I can get about 3 grinds from a disk before its too worn to give a sharp grind, fortunately my rim holds grinds really well so its not that bad Quote Link to comment Share on other sites More sharing options...
Maxx Posted August 9, 2011 Report Share Posted August 9, 2011 And in term of flex, if you put X forces on the disc to break it (whent it don't turn), does the disc require the same X forces to be broken when it turns ? (sorry if I don't explain very good ...) Because what scared me is that the disc breaks more easily when he turns. Quote Link to comment Share on other sites More sharing options...
weebryan Posted August 10, 2011 Report Share Posted August 10, 2011 Buy a variable speed grinder and turn the speed down this helps too, you can or i got a cheap one from halfords Quote Link to comment Share on other sites More sharing options...
forteh Posted August 10, 2011 Report Share Posted August 10, 2011 And in term of flex, if you put X forces on the disc to break it (whent it don't turn), does the disc require the same X forces to be broken when it turns ? (sorry if I don't explain very good ...) Because what scared me is that the disc breaks more easily when he turns. The disk itself doesnt break (well of course it can shatter if you put too much force through it) but the edge wears out and stops giving a nice sharp grind after a while. The sharp, square edge of the disk is what gives a sharp grind. Quote Link to comment Share on other sites More sharing options...
HJS Posted August 14, 2011 Author Report Share Posted August 14, 2011 Thank you, i will give it a look Quote Link to comment Share on other sites More sharing options...
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