Dylan_ Posted January 20, 2005 Report Share Posted January 20, 2005 (edited) Okay, so i've been thinking about grinding my rim... my Local bike shop owner told me not to, because it will weaken it... i know all you guys, or most of you guys use grinds. But i've been thinking, and i tested this out, i found a Wirebrust attachment to a drill, and used that to scruff up my rim, kinda of like a really light grind, i think you casn find these wire brushes in different textures, to make a lighter, or hard grind. This is a pic of the wire brush and this is my rim after. Personally i think i'm going to use it just so my tar will rub on my rim better, but try it and tell me what you think, If you find out about these wire brushes post about it, if there are other textures or hardnesses. Edited January 20, 2005 by Dylan_ Quote Link to comment Share on other sites More sharing options...
Steve-A Posted January 20, 2005 Report Share Posted January 20, 2005 I've never used wire brush myself, but I know a few people who have tried. I worked as well as a grind for about an hour, then just felt a little bit worse than a clean rim. Grindiong you rim will weaken it, but only slightly, you can put many many grinds on a rim before it becomes noticably weakened by grinding. Quote Link to comment Share on other sites More sharing options...
Rossi Posted January 20, 2005 Report Share Posted January 20, 2005 (edited) Using that wire brush won't do much. Look at the result of the wire brush, then look at this... Grind wins (Y) It does weaken your rim, but a rim lasts, what... 6 months? Depending how hard you ride. Also a big positive, you're more than likely to have a good working brake which locks up! Rossi. Edited January 20, 2005 by cultiv8ed rossi Quote Link to comment Share on other sites More sharing options...
Dylan_ Posted January 20, 2005 Author Report Share Posted January 20, 2005 (edited) Next time i go for a ride i think i'm going to stop into the hardware store and see if they have a harsh wire brush. I am also concerned on pad wear, because my LBS doesn't carry magura style pads... yet... i'm trying to get them to order some in to stock. untill them i'm gonna see if i can get the wire brush to go deeper, because i just did it quick. Edited January 20, 2005 by Dylan_ Quote Link to comment Share on other sites More sharing options...
Davetrials Posted January 20, 2005 Report Share Posted January 20, 2005 Whats ur level of riding? grinding a rim will NOT destroy your rim it may weaken it a tiny amount you will not notice, any trialsrider will find a rim wont last him/her a year Thats just the way things are, stop being such a pussy and use an angle grinder, id rather grind my rim than not ride for 3months over breaking my back due to bad brakes Quote Link to comment Share on other sites More sharing options...
Luke Drewery Posted January 20, 2005 Report Share Posted January 20, 2005 Koxx rims come with a brushed surface like that, and i must say my brake was crap on it, a grind is definately better for braking, and if you go careful, your rim will still be strong enough. Quote Link to comment Share on other sites More sharing options...
JTM Posted January 20, 2005 Report Share Posted January 20, 2005 Point (1) Your LBS doesnt know shit about trials. You NEED a grind if you want a good holding and powerful brake. Point (2) The wire brushing is crap. Dont waste your energy. Go get a grinder and a disc, and grind the feck out of your rim, then you will have a good brake. Point (3) Decent maggie pads are a tenner, and they last like 6 months, so stop being a fanny and get the grinder out, there are NO excuses Quote Link to comment Share on other sites More sharing options...
Trebor Posted January 20, 2005 Report Share Posted January 20, 2005 I think you'd be better off with a clean rim, as that brushed surface won't last too long, and once it's gone it'll be real bad. I wouldn't say you definatly need a ground rim to have a good holding brake, as long as you set the pads up so they hit the rim totally flat, and the rim is clean, with a nice booster, you'll be fine. Give me a PM, I've got some Heatsink Pads being un-used and I think it'd be better to help someone out who's stuck with cruddy pads, I'll be more than happy to Air-Mail them to you :( In the mean time though, sand that off or get yourself a grinder, I've found a Stone Cutting disc (though they're a load of different types, Metal Grinding/Cutting, Masonary Cutting/Grinding etc) to give a nice sharp grind. Quote Link to comment Share on other sites More sharing options...
G-Jordan Posted January 20, 2005 Report Share Posted January 20, 2005 Proper grinds are good however i find a wearing off grind or that pansy of a grind you are running will probably be worse then a clean rim. Quote Link to comment Share on other sites More sharing options...
Fishwog Posted January 20, 2005 Report Share Posted January 20, 2005 You NEED a grind if you want a good holding and powerful brake. ← Da f**k? Havn't you said that before and had about a hundred people bit into you for talking bollocks? Smooth rim + black pads, works incredibly well when set-up properly and clean Smooth rim + Plaz pads, again works very well. You NEED a grind if you want a good holding brake in the WET, not neccessarily true in dry weather though.... Quote Link to comment Share on other sites More sharing options...
Dylan_ Posted January 20, 2005 Author Report Share Posted January 20, 2005 I finished using a harder brush, made deeper scratches, after it wear off i'll grind, or if i don't like it i will grind. I'm nort worried about waisting my time, it was a snowstorm today, so i had a day off school, so i'm really board sitting home not doing anything. I already waxed my snowboard once. Quote Link to comment Share on other sites More sharing options...
JT! Posted January 20, 2005 Report Share Posted January 20, 2005 I went round my rims with a file. :( It looked ok, but it didnt last two weeks. You have to get it realy roughf. Quote Link to comment Share on other sites More sharing options...
Gurra Posted January 20, 2005 Report Share Posted January 20, 2005 bit OT but i fecking hate when lbs'es gives what and what not to do for trials bikes. sure some might have a tiny bit of knowledge but most dont. nothing beats i nice fresh grind. NOTHING imo :( Quote Link to comment Share on other sites More sharing options...
Mr Motivator Posted January 20, 2005 Report Share Posted January 20, 2005 Use a stanley knive and make groove with that. will take you about an hour but I did a small area of an old rim, and it was more grippyer than my grind :( Quote Link to comment Share on other sites More sharing options...
thechink Posted January 20, 2005 Report Share Posted January 20, 2005 my mate used a stanley knife and it works suprisingly well. cant beat a good old grind. thechink Quote Link to comment Share on other sites More sharing options...
Will Arnold Posted January 20, 2005 Report Share Posted January 20, 2005 this is what you want as i grinding alternative! http://www.trials-forum.co.uk/forum/index....cmd=si&img=5712 it fits to an angle grinder. i might try it later....... Will Quote Link to comment Share on other sites More sharing options...
Dylan_ Posted January 20, 2005 Author Report Share Posted January 20, 2005 Is it just me or does that look like a weapon of mas destruction? hahaha just kidding :( Quote Link to comment Share on other sites More sharing options...
JTM Posted January 20, 2005 Report Share Posted January 20, 2005 Smooth rim + black pads, works incredibly well when set-up properly and clean ← Thats probably THE funniest thing ive ever heard! lol I dont even have to justify what Im about to say, its just a fact: "No it does not!!!" That brake ^^^ would work on a bike used for general riding or light XC etc, it does NOT hold up on a trials bike. If you want a brake that will always work its best, you need a grind. The most powerful brake without a grind, is not as powerful as the best brake with a grind. Sorry! Quote Link to comment Share on other sites More sharing options...
Davetrials Posted January 20, 2005 Report Share Posted January 20, 2005 Iam with mong on this one, grinds rule!!!! black pads suck on a clean rim, ive ridden rowens bike and it is not the best brake by far!!!!!, hes just very controlled. Quote Link to comment Share on other sites More sharing options...
Dylan_ Posted January 20, 2005 Author Report Share Posted January 20, 2005 Somepeople may like a little slip in their brake... i don't know why, but they may.. But i wanted to test this wire brush out before i grind. Because i'm looking for a good hold. Quote Link to comment Share on other sites More sharing options...
Will Arnold Posted January 20, 2005 Report Share Posted January 20, 2005 Is it just me or does that look like a weapon of mas destruction? hahaha just kidding :) ← lol, almost :) i might try it when my current 'normal'grind has worn somewhat :blink: Quote Link to comment Share on other sites More sharing options...
Steve-A Posted January 20, 2005 Report Share Posted January 20, 2005 I have seen black pads on a clean rim work very well. But only iftherim has only just been cleaned with muck off or equivelent and its not raining. At same time I'm now running a chrome rear rim, with magura red pads and thats just sick, much better than any grind I have felt. Quote Link to comment Share on other sites More sharing options...
Wayne-king Posted January 21, 2005 Report Share Posted January 21, 2005 as far as i know, Andy P is the only person in trials history who has made black pads work with a smooth rim! :) but seriously, what's with all this "cleaning you rim with jif", "using a wire brush attachment", "scraping it with a file" crap? just get a fecking grinder! they cost about £15 and i've never heard of someone destroying their rim due to running a grind! :blink: if you don't want a really grabby rear brake, just give it a light grind :) Quote Link to comment Share on other sites More sharing options...
Tartridge Posted January 21, 2005 Report Share Posted January 21, 2005 what's with all this "cleaning you rim with jif", "using a wire brush attachment", "scraping it with a file" crap? just get a fecking grinder! they cost about £15 and i've never heard of someone destroying their rim due to running a grind! :blink: if you don't want a really grabby rear brake, just give it a light grind :) ← Woop woop! Get down to B&Q, then grind away boys :) Quote Link to comment Share on other sites More sharing options...
will Posted January 22, 2005 Report Share Posted January 22, 2005 OR Argos, Challenge Grinder for #15 + metal cutting disk. Works wonders on those rainy days >_< Once you grind you wont go back. Quote Link to comment Share on other sites More sharing options...
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