J Trials 31 Posted August 31, 2008 Report Share Posted August 31, 2008 Alright, tired of falling on my butt! I'm running a Maggie with a smooth rims. Used Rock pads and hated em' cause they didn't work when they got wet. Using Tango pads today. And worked crappy in both wet and dry. Alright, here's the deal. My dad won't let me grind my rims for some reason. I've got a knife and cut notches all around my rim. That didn't work very well. Could I use a mechanical engraver to make the rim more of a rough surface so the pads would work better? Essentially the only reason anybody grinds is to make the rim rough right? So help me out here! Quote Link to comment Share on other sites More sharing options...
Muel Posted August 31, 2008 Report Share Posted August 31, 2008 You could get some pads for a smooth rim, rock pads are best on a harsh grind. Quote Link to comment Share on other sites More sharing options...
txt2007 Posted August 31, 2008 Report Share Posted August 31, 2008 if your not allowed to grind it, tar up! Quote Link to comment Share on other sites More sharing options...
Jason222 Posted August 31, 2008 Report Share Posted August 31, 2008 My dad won't let me grind my rims for some reason.Do it anyway.You can use a knife if you want, put a slice every 5mm in the rim, it takes a long time, but it works. But if you put too many, it'll rape your brake pads. Quote Link to comment Share on other sites More sharing options...
J Trials 31 Posted August 31, 2008 Author Report Share Posted August 31, 2008 You could get some pads for a smooth rim, rock pads are best on a harsh grind.Had Krytonites not Sapphires. Can't use tar cause I don't have any way to get it. And Jason, already done that knife thing. It worked better, but not good enough to keep from slipping. Quote Link to comment Share on other sites More sharing options...
ogre Posted August 31, 2008 Report Share Posted August 31, 2008 don't be a pussy. grind your rim, explain it's the norm for trials and it's dangerous for you not to. Quote Link to comment Share on other sites More sharing options...
J Trials 31 Posted August 31, 2008 Author Report Share Posted August 31, 2008 don't be a pussy. grind your rim, explain it's the norm for trials and it's dangerous for you not to.Yep, done told him that a thousand times. Thinking about taking that mechanical engraver to it. Anybody think that is a good or bad idea? Quote Link to comment Share on other sites More sharing options...
EchoSam Posted August 31, 2008 Report Share Posted August 31, 2008 Or buy some rock pad greens which work mint on smooth and in the wet Quote Link to comment Share on other sites More sharing options...
Skoze Posted August 31, 2008 Report Share Posted August 31, 2008 As soon as there was a slight spot of moisture in the air, mine went on strike.Good in the dry though...Grind or get a rear disc hehe. Quote Link to comment Share on other sites More sharing options...
J Trials 31 Posted August 31, 2008 Author Report Share Posted August 31, 2008 Or buy some rock pad greens which work mint on smooth and in the wet That's what I was using before. How do they work mint in the wet? Couldn't get mine to hold at all! Quote Link to comment Share on other sites More sharing options...
EchoSam Posted August 31, 2008 Report Share Posted August 31, 2008 That's what I was using before. How do they work mint in the wet? Couldn't get mine to hold at all!I only used them for a few days as they were not myne. But i used tar everyday not much though.I remember using them in the rain one night the sound chnaged but performance did'nt.You could try plaz or coust on smooth they work well Quote Link to comment Share on other sites More sharing options...
J Trials 31 Posted August 31, 2008 Author Report Share Posted August 31, 2008 Yeah, but anything works with tar. Anybody else can confirm Cousts or plaz work good on a smooth rim in wet or dry? Quote Link to comment Share on other sites More sharing options...
forteh Posted August 31, 2008 Report Share Posted August 31, 2008 Yeah, but anything works with tar. Anybody else can confirm Cousts or plaz work good on a smooth rim in wet or dry?Ive got coustsinks on an SD7 on the front with a mavic xc717 rim, the sidewall is as it comes from mavic (machined smooth) and the brake is astonishing in the dry without tar, ask danny kearns. It doesnt work in the wet though, also not too sure on how it would work on the back with a maggie and smooth rim, your best bet is to just buy a rim from tarty and get them to pre-grind it and plead ignorance when it turns up Quote Link to comment Share on other sites More sharing options...
EchoSam Posted August 31, 2008 Report Share Posted August 31, 2008 (edited) Yeah, but anything works with tarTar doesnt make every brake good sometimes it cant make it slip or just make the pads stick to the rim which is annoying.To be honest your need a grind for the winter if you want to ride as most pads will take a certain amount of rain and then they will just slip on a smooth rim. Edited August 31, 2008 by ToMhIlL131 Quote Link to comment Share on other sites More sharing options...
Jason222 Posted August 31, 2008 Report Share Posted August 31, 2008 Had Krytonites not Sapphires. Can't use tar cause I don't have any way to get it. And Jason, already done that knife thing. It worked better, but not good enough to keep from slipping.PM me with your address, pay for the shipping, and I'll send you a bunch of tar. Quote Link to comment Share on other sites More sharing options...
J Trials 31 Posted August 31, 2008 Author Report Share Posted August 31, 2008 I'll take you up on that as long as shipping isn't too bad. Quote Link to comment Share on other sites More sharing options...
Simpson Posted August 31, 2008 Report Share Posted August 31, 2008 If you just grind your rim whats your daddy going to do? glue the sidewall back on?Seriously its the only option, tar = gash and dangerousmachining = pricey and pointless as a grind will work better"stanley kniving every 5mm "or so"" = f**king pointless and lots of cut fingers and no difference in braking performanceOnce you have a grind just wack on any decent trials pads and whey Quote Link to comment Share on other sites More sharing options...
J Trials 31 Posted August 31, 2008 Author Report Share Posted August 31, 2008 No, it's not machining. Just using a hand engraver to cut into the rim. How is tar dangerous and gash? Quote Link to comment Share on other sites More sharing options...
forteh Posted September 1, 2008 Report Share Posted September 1, 2008 No, it's not machining. Just using a hand engraver to cut into the rim. How is tar dangerous and gash?Get it wet and it turns to oil....Unless you have a HUGE bit on the engraver then it will take you forever to get a decent result, also chances are it may not be rough enough. Quote Link to comment Share on other sites More sharing options...
G-baby158 Posted September 1, 2008 Report Share Posted September 1, 2008 GRIND YOUR RIM!My dad wouldn't let me grind my rim at first, he said it would eat my side wall and would be to weak.I let him have ago on my bike before i grinded it, then grinded it with out him knowing and then showed him when i had done it and told him to have another go and he said it worked 10 times better. Quote Link to comment Share on other sites More sharing options...
JonMack Posted September 1, 2008 Report Share Posted September 1, 2008 Why not just grind it while he's not at home? You're not going to find a brake pad that works perfectly on a smooth rim, in both the wet and dry. Quote Link to comment Share on other sites More sharing options...
greenmeansgo Posted September 1, 2008 Report Share Posted September 1, 2008 What's the reason you're not allowed? I'm guessing it's some combination of your dad being worried about your safety when using the angle grinder (slipping, shards of aluminium going in your eyes etc), or your safety from riding with what he perceives to be weakened rims. Or maybe it just sounds like lunacy taking power tools to your expensive bike (and it did feel kinda wrong grinding my new rim the other day).You'll have much sharper braking with a grind (I did my rims for the first time the other day), which will make your riding safer. You're not taking much material off the rim with a grind, you're just roughening the surface a bit, so it won't affect the strength appreciably. Wear gloves and safety specs/ sunnies when using the grinder. There - all your safety issues covered!Sometimes though you just have to accept that the answer's no when you're a teenager living at home with your parents - in which case check the pad review thread Quote Link to comment Share on other sites More sharing options...
N Roach Posted September 1, 2008 Report Share Posted September 1, 2008 (edited) Dry + Smooth Rim + Plazmatic CRM pads + Monty Brake Spray = Excellent Hold Edited September 1, 2008 by Nathan Coward Quote Link to comment Share on other sites More sharing options...
Jason222 Posted September 1, 2008 Report Share Posted September 1, 2008 (edited) See if you have any friends that own angle grinders, and do it at their place. lol! Get a shitty rim to test on first, so you get used to it, and then grind away!Tar is good in moderation, but it doesn't work in the wet. Edited September 1, 2008 by Jason222 Quote Link to comment Share on other sites More sharing options...
Oli P Posted September 3, 2008 Report Share Posted September 3, 2008 (edited) Try getting some very rough sand paper and rub at a angle to the rim for it to work best, 90 degrees is best but takes most time. This should be the same as a light grind from a grinder. Edited September 3, 2008 by raptor169 Quote Link to comment Share on other sites More sharing options...
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