RDV Posted May 7, 2012 Report Share Posted May 7, 2012 So I picked up my first proper trials bike a few weeks ago, the Onza Pro. The rear brake was shocking and the front wasn't to good either, it just had standard cable disks on. There were a few other things I wanted looking at, so I took it to my local bike shop and said about upgrading to Maggies. I picked the bike up and the performance is awful, the rear rim doesnt hold very well at all, I can even turn the wheel while the brake is locked on. The mechanic was kinda like "well that's all in can do I'm afraid" so I'm in no better position than when i started but my wallet is a lot lighter lol. I can't run a booster as I have the fitting kit on too. What else do you Mod guys use? I'm 6ft 1 and probably a little over weight. Sorry for the waffle & thanks a bunch for any help Quote Link to comment Share on other sites More sharing options...
dann2707 Posted May 7, 2012 Report Share Posted May 7, 2012 What brake pads are you using on the hs33? Quote Link to comment Share on other sites More sharing options...
stunt man t Posted May 7, 2012 Report Share Posted May 7, 2012 itll have standard black magura pads so change them and grind the rim Quote Link to comment Share on other sites More sharing options...
brad1995 Posted May 7, 2012 Report Share Posted May 7, 2012 I would say get some new pads such as TNN LGM's, although most pads on tartys would be better than the standard maggy blacks http://www.tartybikes.co.uk/hs33_brake_pads/c4.html Also i would recommend grinding your rim to roughen it up to help the brake pads hold on the rim http://www.tartybikes.co.uk/media/guides/maintenance_rim_grinding/m2.html Quote Link to comment Share on other sites More sharing options...
RDV Posted May 7, 2012 Author Report Share Posted May 7, 2012 (edited) It's the pads that come standard, yes they are black. So I won't need to worry about getting a refund and figuring something else out then? What pads do you recommend and how do I go about this rim grinding malarkey then? Thanks Edit: only just seen your above post, as I'm on my phone atm. Thanks a lot dude ! Really appreciate it. Edited May 7, 2012 by RDV Quote Link to comment Share on other sites More sharing options...
isitafox Posted May 7, 2012 Report Share Posted May 7, 2012 If your running the evo mounts the rear will flex like f**k as well which won't help things Quote Link to comment Share on other sites More sharing options...
ogre Posted May 7, 2012 Report Share Posted May 7, 2012 you want proper 4bolt mounts not the shity adapter things.... Quote Link to comment Share on other sites More sharing options...
Cap Posted May 7, 2012 Report Share Posted May 7, 2012 Onza pro has 4 bolt mounts on the rear so he wouldn't be able to run the evo 2 mounts. New pads and a grind should improve them. Quote Link to comment Share on other sites More sharing options...
trials owns Posted May 7, 2012 Report Share Posted May 7, 2012 Firstly check the rim hasn't got oil and such making it slip, give it a very good clean with just water and let it to dry, also take the pads of and give them alittle sand down to fresh things up a little... Quote Link to comment Share on other sites More sharing options...
JD™ Posted May 7, 2012 Report Share Posted May 7, 2012 Everyone seems to be glossing over the fact that, no matter how bad standard pads are, he should still be able to lock his wheel with them! As well as the advice you've been given, which is great of you only ever want your brake to be on or off, make sure the brake is set up properly - its unlikely a shop mechanic will have set it up properly for trials. 1 Quote Link to comment Share on other sites More sharing options...
TrialsIsHard Posted May 7, 2012 Report Share Posted May 7, 2012 Everyone seems to be glossing over the fact that, no matter how bad standard pads are, he should still be able to lock his wheel with them! Yeah but it's all relative how good/bad a brake feels. He was used to using the standard cable disks on the Pro, which are actually quite powerful and if well set up would be miles better than a maggy with blacks in! Quote Link to comment Share on other sites More sharing options...
RDV Posted May 7, 2012 Author Report Share Posted May 7, 2012 The bikes with the shop atm, as I said I wasn't taking it until something has been resolved. I cleaned the rim thoroughly when I had it back from the shop, and the mechanic took the pads off and de greased them today as they were pretty gunky for some reason. The mechanic called me earlier and said he had re bled the brakes and fiddled around and they seemed to have more bite, so I'll take a look when I finish work tomorrow. I bought the Maggies with the intention that was all I needed. After reading some of your comments it would appear the standard Magura still needs improving with pads & grinding etc. kinda shitty. If you could suggest some pads for me to get I'd appreciate it. Thanks for all the help. Quote Link to comment Share on other sites More sharing options...
Mark W Posted May 7, 2012 Report Share Posted May 7, 2012 Maguras aren't really designed for trials, so for that reason they come with pretty hard, durable brake pads that are more suitable for roadie/commuter use. That doesn't mean the brake itself is bad though. This should tell you pretty much all you need to know about grinds. Quote Link to comment Share on other sites More sharing options...
brad1995 Posted May 7, 2012 Report Share Posted May 7, 2012 I would always recommend TNN pads, either the LGM or the Belaeys, but if your on a bit more of a budget the rockman blue pads are really good for the price in my opinion. Quote Link to comment Share on other sites More sharing options...
Blake Posted May 7, 2012 Report Share Posted May 7, 2012 If you're not looking to spend much, heatsink yellows on a smooth work incredibly. Quote Link to comment Share on other sites More sharing options...
williams Posted May 7, 2012 Report Share Posted May 7, 2012 If you're not looking to spend much, heatsink yellows on a smooth work incredibly. Sorry but I can't agree there, at all. Both me and my mate have found that the pad is REALLY dependent on a grind. It works awesome when the grind is really sharp, but actually isn't good on a smooth rim or a used grind. You might have been running a better set up etc... But it had matching performance to magura blacks. Regarding the Rockman blue pads, DON'T buy them with plastic backings... Many RockMan plastic pads break in half, which have (for me) led to a horrible accident. I think it's just stupid to buy something that risks your safety. The Rockman CNC blues (metallic backed pads) Shouldn't have the same problem though. And the pad material itself are really good for Onza rims. Quote Link to comment Share on other sites More sharing options...
Blake Posted May 8, 2012 Report Share Posted May 8, 2012 Oh really? my yellows were insane, bit of tar of course. Literally never slipped in the dry. Quote Link to comment Share on other sites More sharing options...
williams Posted May 8, 2012 Report Share Posted May 8, 2012 Oh really? my yellows were insane, bit of tar of course. Literally never slipped in the dry. Haha that's strange... where out riding today with my mates bike and it had a fresh grind, it where good at the start but like 15 later it sucked. Had to squeze the lever really hard. But when they where used with a totally new grind they where awesome. He might just have a bad luck with pads but... He wasn't useing tar though... Quote Link to comment Share on other sites More sharing options...
Blake Posted May 9, 2012 Report Share Posted May 9, 2012 I don't really like yellows on a grind, never seem to work for long. Quote Link to comment Share on other sites More sharing options...
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