montyrider Posted January 11, 2007 Report Share Posted January 11, 2007 (edited) So basically im getting my brand new echo 07 wheels threw in a couple of weeks but as there anodised tarty bikes wouldnt grind them for me.... i have no tool to do it and need some help finding the right one for the job.I just wanna know what tool to buy which wont completly rape my rim apart, im not a mechanic but point me in the right direction and ill get the job done. if anyone has a link to a tool shop with what i want that would be awesome.Thanks people. Edited January 11, 2007 by montyrider Quote Link to comment Share on other sites More sharing options...
manuel Posted January 11, 2007 Report Share Posted January 11, 2007 There are hundreds of topics like this ? Quote Link to comment Share on other sites More sharing options...
Davey Posted January 11, 2007 Report Share Posted January 11, 2007 OR you could just not grind them, haha.This will start an argument, but I hate grinded rims, other people have different experiences but I find unground rims work better due to greater surface area contact with the pad (needs to be set up properly so it contacts parallel), and a little tar gives that extra bite. Since buying a new wheel second hand with a grind already on my brakes have been slipping loads! Also pads dont wear out as fast on unground rims.Anyway, I'll shut up now and let someone explain how to grin a rim, as I would never do it so have no idea, haha!Davey Quote Link to comment Share on other sites More sharing options...
montyrider Posted January 11, 2007 Author Report Share Posted January 11, 2007 (edited) sorry it was the one time i was being lazy and didnt check the search button we all do it sometime or other...... but i couldnt find jack S*&^ on what tools you need. i can grind it but not really sure what with. Edited January 11, 2007 by montyrider Quote Link to comment Share on other sites More sharing options...
Janson Posted January 11, 2007 Report Share Posted January 11, 2007 surface area has nothing to do with friction the friciton force is equal to the applied force times the coefficient of friction between the rim and the pad. I prefer a grind but am using a painted tryall rim at the mo with onza citruses, and it's alright. slips if i land like shite but holds for most stuff. it's ok. Quote Link to comment Share on other sites More sharing options...
Davey Posted January 11, 2007 Report Share Posted January 11, 2007 surface area has nothing to do with friction the friciton force is equal to the applied force times the coefficient of friction between the rim and the pad. I prefer a grind but am using a painted tryall rim at the mo with onza citruses, and it's alright. slips if i land like shite but holds for most stuff. it's ok.Haha, Good old wikipedia eh Janson It would appear that, in general, rough surfaces have higher friction values. There is a section on friction however which relates to materials which have "adhesive" qualities, not in the absolute sense but rather that they are mildly sticky like some tyres and a lot of trials pads (certainly any rim where tar is involved) in which case according to Wikipedia surface area does affect friction, perhaps this explains it, otherwise I am not sure of exactly why it is that ground rims seem to be so shite, in my own personal experience.Davey Quote Link to comment Share on other sites More sharing options...
Janson Posted January 11, 2007 Report Share Posted January 11, 2007 err good old college physics get a fresh grind on there and some good pads and it'll be dandy. coust pads are a personal fave. Quote Link to comment Share on other sites More sharing options...
Davey Posted January 11, 2007 Report Share Posted January 11, 2007 err good old college physics get a fresh grind on there and some good pads and it'll be dandy. coust pads are a personal fave.No no no, haha, yuck, I'd rather have the surface of my rim back, and a nice paid of magura coolstops with a little bit of tar, lovely, can't beat it, haha (god I sound like a stuborn old man)!It's all a bit irrelevant now though because I don't really ride anymore, haha, I am lame! But I still say non-grind *** Davey Quote Link to comment Share on other sites More sharing options...
Ali C Posted January 11, 2007 Report Share Posted January 11, 2007 non ground rims *** for street, ground rims *** with wet muddy natural. Quote Link to comment Share on other sites More sharing options...
Davey Posted January 11, 2007 Report Share Posted January 11, 2007 non ground rims *** for street, ground rims *** with wet muddy natural.Haha, makes sense, I'm a street rider and a right poncey one at that, slightest hint of rain and I'm in the car on my way home, hahahahaha!Davey Quote Link to comment Share on other sites More sharing options...
GTF Posted January 11, 2007 Report Share Posted January 11, 2007 non ground rims *** for street, ground rims *** with wet muddy natural. Quote Link to comment Share on other sites More sharing options...
cruiserweight14 Posted January 11, 2007 Report Share Posted January 11, 2007 an angle grinder will do the job. Quote Link to comment Share on other sites More sharing options...
Louth Trials Posted January 14, 2007 Report Share Posted January 14, 2007 There are hundreds of topics like this ? Quote Link to comment Share on other sites More sharing options...
Janson Posted January 14, 2007 Report Share Posted January 14, 2007 oh my god THAT WAS SO USEFUL !!! LOLLERSKATES Quote Link to comment Share on other sites More sharing options...
GTF Posted January 14, 2007 Report Share Posted January 14, 2007 There are hundreds of topics like this ?Haha. You were talking with me on msn there Quote Link to comment Share on other sites More sharing options...
Monty_Kid Posted January 14, 2007 Report Share Posted January 14, 2007 any old angle grinder with a masonry cutting disk has always worked with me, any other disk rapes therim apart from my own personal experience. cheers lewis Quote Link to comment Share on other sites More sharing options...
echo8 Posted January 16, 2007 Report Share Posted January 16, 2007 use a angle grinder but u dont have to grind your rim i havnt and mine is sharp Quote Link to comment Share on other sites More sharing options...
Mooore! Posted January 17, 2007 Report Share Posted January 17, 2007 masonary cutting disk worked well for me (well it looks like its gonna work well)I never used to grind my rim until 8 weeks ago when i did a small gap off a bench & down 3 steps. Brake slipped & i spent the next day in hospital with a crushed vertabrae in the top of my spine & i still can't ride my trials bike properly. I had a go a few weeks ago but it all ended in pain so i left it. Am looking to ride properly again this weekend so i'll let you know how the grind holds up. Quote Link to comment Share on other sites More sharing options...
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