Jamie East Posted July 6, 2008 Report Share Posted July 6, 2008 Hi just brought a rear try all rim, however i didnt get one with brushed sidewalls, (Stupid me!) and the braking surface is painted/anodised and is basically crap! The braking surface is also at a slight angle, making setting up the brakes a total pain in the ass. Wanted to know if the rim is the same as the one with brushed sidewalls, and if so would it be possible to grind the rim so that the braking surface is straight/ parallel to the frame? Any help appreciated Jamie Quote Link to comment Share on other sites More sharing options...
Luke Rainbird Posted July 6, 2008 Report Share Posted July 6, 2008 You'll be fine to grind it Quote Link to comment Share on other sites More sharing options...
PaRtZ Posted July 6, 2008 Report Share Posted July 6, 2008 err call me stupid but I thought they were exactly the same just one was pre brushed before sale? Didn't realise there was a disc only/non grindable version Anyway the answer is yes, I had one for my hydroxx dual disc and now that I've gone back to magura I slapped a grind on its ass and its fine I just left the wheel in the frame and ground it till it was harsh as a dead baby joke Quote Link to comment Share on other sites More sharing options...
Jamie East Posted July 6, 2008 Author Report Share Posted July 6, 2008 Thanks, Yeah stupid me! Ofcourse they're the same, i was just a bit confused about the angle of the sidewall, but that can be ground flat. I would grind it myself, but don't trust myself! Know its a pretty basic thing to do, but i've never done it before and it's a new rim. I'd cry if i broke it! Any grinders out there? Or advice? (Already looked at the Wiki) Thanks. Quote Link to comment Share on other sites More sharing options...
PaRtZ Posted July 6, 2008 Report Share Posted July 6, 2008 The only way you can "Break" it is by grinding straight through it....so...don't do that I personally think the equipment is part of getting a good grind, not just technique. Ive found expensive discs to work well with my grinder Quote Link to comment Share on other sites More sharing options...
eskimo Posted July 6, 2008 Report Share Posted July 6, 2008 Get an old rim from somewhere and practise on that. Wilko's sell grinders for £15 and metal cutting discs for £2 i think. The metal cutting disc will give a sharper grind. If you want just a bit of ruff surface, use a stone disc and grind while spinning the wheel. This should give an even ruff surface to use. Quote Link to comment Share on other sites More sharing options...
Jamie East Posted July 6, 2008 Author Report Share Posted July 6, 2008 Thanks for the advice, i tryed on my front rim just now, its not perfect, but think im getting the hang of it. Although the pads im using at the moment are absolute shite! One is a swiss-stop and the other a cheap plastic imitation! Dont know why there different! Any advice on pads? Was thinking of getting CNC backing ones, anyone have any pads they want to sell? Cant afford new ones! Jamie Quote Link to comment Share on other sites More sharing options...
16 years later Posted July 6, 2008 Report Share Posted July 6, 2008 did you take the tyre off Quote Link to comment Share on other sites More sharing options...
Jamie East Posted July 6, 2008 Author Report Share Posted July 6, 2008 did you take the tyre off Yeah i took it off. Its just an old worn tyre. Quote Link to comment Share on other sites More sharing options...
spartan Posted July 6, 2008 Report Share Posted July 6, 2008 Yeah man grinding take a bit of balls to do the first time but seriously you have to be like an gigantic retard to break i new rim grinding it. Like push really really hard while holding the grinder in the same place while cutting the rim with a bandsaw to really destroy it. Quote Link to comment Share on other sites More sharing options...
Ali C Posted July 6, 2008 Report Share Posted July 6, 2008 as said, yes you can grind it, but don't expect to get it parallel with the frame, you would almost deffo go though the top of the rim making it useless. Quote Link to comment Share on other sites More sharing options...
eskimo Posted July 7, 2008 Report Share Posted July 7, 2008 That looks fine. You did a good job it seems. Buy some Plazmatic CRVs. They are also good on a smooth rim. If it turns out your not happy with the grind, file and sand it down back to smooth. Also wash the excess off when done. Quote Link to comment Share on other sites More sharing options...
Jason222 Posted July 11, 2008 Report Share Posted July 11, 2008 Is it just me, or is there a few different kinds of try-all rims around? When I compared mine to James Barton's Try-all (white) rim, his sidewalls were much taller than mine (kinda looked like a dob rim?) and the part in the center that protrudes out, didn't stick out as far on his rim? His also held a grind much better than mine! WTF! Quote Link to comment Share on other sites More sharing options...
PaRtZ Posted July 11, 2008 Report Share Posted July 11, 2008 Is it just me, or is there a few different kinds of try-all rims around? When I compared mine to James Barton's Try-all (white) rim, his sidewalls were much taller than mine (kinda looked like a dob rim?) and the part in the center that protrudes out, didn't stick out as far on his rim? His also held a grind much better than mine! WTF!well assuming that all metal material is perfect and there is no impurities (which is bollocks, as there is usually a TINY amount of impurities but so little no point discussing)... Yes between the years, koxx have tweaked the rim geometry. EG My front rim is from way back in the day...about...err...2004 maybe? And its probaly a smidge taller than other front koxx rims out thereIm pretty certain width has also changed on the rear koxx rims over the years too. Although I may be wrong. Quote Link to comment Share on other sites More sharing options...
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