mrBENN Posted September 30, 2006 Report Share Posted September 30, 2006 http://img168.imageshack.us/img168/4828/dsc00059og7.jpgplease help my mate found this disk and we wont to no what disk make it is does anyone know? Quote Link to comment Share on other sites More sharing options...
Wright Pads Posted September 30, 2006 Report Share Posted September 30, 2006 Could be anyhting that mate! Looks very cheapy and tacky. Unused too.Has a coating all over too, kinda as if it's alloy Quote Link to comment Share on other sites More sharing options...
ZHI-sam Posted September 30, 2006 Report Share Posted September 30, 2006 looks like an old apollo one from halfords mate. if it is they arent very good. get one of these hope gothic rotor Quote Link to comment Share on other sites More sharing options...
Wright Pads Posted September 30, 2006 Report Share Posted September 30, 2006 The Gothic is no longer made and nor is an instock item @ Hope, for £40 they will make you one if you beg them too.Very few places have them in stock and nor do they show up on ebay that often as well. Quote Link to comment Share on other sites More sharing options...
ZHI-sam Posted September 30, 2006 Report Share Posted September 30, 2006 ahh ok i didnt know that. thats a kick in the spherical parts as they are lush disks ok then get one of these disks then not quite as good as a gothic sam Quote Link to comment Share on other sites More sharing options...
Wright Pads Posted September 30, 2006 Report Share Posted September 30, 2006 Yet to be ridden and thrashed by any of us!1st to the OP what claiper / system are you intending to run that disc you posted up er orAre you just asking what the disc could be off out of pure intrest? Quote Link to comment Share on other sites More sharing options...
ZHI-sam Posted September 30, 2006 Report Share Posted September 30, 2006 good point we have no idea if he even has a disk brake lol Quote Link to comment Share on other sites More sharing options...
mrBENN Posted September 30, 2006 Author Report Share Posted September 30, 2006 (edited) Yeh becasue my m8 found it and we sprayed it but we didnt know what rotor it was just wonted to know what disk it was for my mate because he wonts to put it on his levelboss Edited September 30, 2006 by ..ben.. Quote Link to comment Share on other sites More sharing options...
maxxis26 Posted September 30, 2006 Report Share Posted September 30, 2006 looks like a cheep disk, and its been sandblasted so thats gona be one doddgy brake bet i wont grip on any pads hydo or cable, it looks like a pro max disk. Quote Link to comment Share on other sites More sharing options...
Wright Pads Posted September 30, 2006 Report Share Posted September 30, 2006 No problem if it's rough or not, the pads will smoeth it out. Quote Link to comment Share on other sites More sharing options...
ZHI-sam Posted September 30, 2006 Report Share Posted September 30, 2006 naaa dude i wouldnt use thet for trials, its a cheap halfords appollo disk. they are really crap. they dont grip at all Quote Link to comment Share on other sites More sharing options...
Sam Nugent Posted September 30, 2006 Report Share Posted September 30, 2006 Is that not a magura rotor? I'm sure it is... the old one. Quote Link to comment Share on other sites More sharing options...
mrBENN Posted September 30, 2006 Author Report Share Posted September 30, 2006 thats what we thought at first Quote Link to comment Share on other sites More sharing options...
maxxis26 Posted September 30, 2006 Report Share Posted September 30, 2006 have a look on ebay your sure to find a disk you can use there Quote Link to comment Share on other sites More sharing options...
mrBENN Posted September 30, 2006 Author Report Share Posted September 30, 2006 (edited) no dont worry i dont like using ebay lol Edited September 30, 2006 by ..ben.. Quote Link to comment Share on other sites More sharing options...
JT! Posted October 1, 2006 Report Share Posted October 1, 2006 we sprayed it...and made it useless by doing so i'm afriad. If you spit on a rotor it gets contaminated, not to mention spraying it with anything. Don't use it, it'll make your pads unuseable too. Quote Link to comment Share on other sites More sharing options...
mrBENN Posted October 1, 2006 Author Report Share Posted October 1, 2006 we only did it for some fun Quote Link to comment Share on other sites More sharing options...
adamtrials Posted October 1, 2006 Report Share Posted October 1, 2006 we only did it for some funSounds hilarious.Anyway, it's only a piece of steel in a circle, so if it hadnt been sprayed i would have thought it would as well as any other rotor of the same size? Quote Link to comment Share on other sites More sharing options...
mrBENN Posted October 3, 2006 Author Report Share Posted October 3, 2006 Is anyone goin to the cycle show at excel this weekend then? Quote Link to comment Share on other sites More sharing options...
nmt_oli Posted October 3, 2006 Report Share Posted October 3, 2006 (edited) Anyway, it's only a piece of steel in a circle, so if it hadnt been sprayed i would have thought it would as well as any other rotor of the same size?Actually, no!The materials and processes used in manufacture make a huse different to a disks performance.If the rotor uses a low grade stainless, it will not wear well, be uneven and patchy in terms of bite. this is due to inconsitencies in the grain of the metal, and the inconsistencies in the make up of the alloy- steel is not a pure metal, its an alloy of Iron and Carbon.Also, if a rotor is pressed (ie apollo rotors), not cut (like hopes), it will perform relatively badly. It means the rotor is not perfectly flat, and distorts the grain near all the edges, again detrimenting performance. Although pressed rotors are found on only the cheapest brakes, and easy to spot as you can see the rounded edges.The reason for needing the rotor to be uniform to produce uniform friction is to do with how the friction actually occurs between the pad and the rotor. Its dynamic friction, as the pads /disk are moving in relation to each other, so the friction coefficient is never going to be perfectly equal at all times, but the more uniform the rotor, the more uniform the friction is likeyl to be.this may also help explain it, quote from "grinding disk rotors" thread: Sorry, still not sure I agreeThere are two types of friction acting between disc and pada)Abrasive friction - brakes with this charateristic have a high wear rate and operate at a low('ish) temp and would be the result of a 'rough surface'b)Adherent friction - where some of the pad material diffuses across the interface between the pad and the disc and forms a very thin, uniform layer of pad material on the surface of the disc. As the friction surfaces of both disc and pad then comprise basically the same material, material can now cross the interface in both directions and the bonds break and reform. More common on a smooth surface where the depositing of brake pad material is consistant, thus preventing judder when the brake is appliedor in otherwordsa) for low speed (cooler) applications with a high wear rateb ) for high speed applications with a longer wear rateIn terms of a bicycle disc brake we're referring to both of the above, especially as theres no such thing as pure adherent or pure abrasive friction. Ideally you want one greater than the other depending on the application - in this case trials where application a) (low speed and concequently a low temperature) would be more beneficial. In DH, high friction would result in high temps and therefore a pad that worked at higher temps would be more suitable. Edited October 3, 2006 by nmt_oli Quote Link to comment Share on other sites More sharing options...
Sam Nugent Posted October 3, 2006 Report Share Posted October 3, 2006 Is anyone goin to the cycle show at excel this weekend then?Nothing like being random lol.And yes I am Quote Link to comment Share on other sites More sharing options...
poopipe Posted October 3, 2006 Report Share Posted October 3, 2006 hmmm. random ? i just shaved my head again. Quote Link to comment Share on other sites More sharing options...
mrBENN Posted October 6, 2006 Author Report Share Posted October 6, 2006 What is all that about shaving your head random Quote Link to comment Share on other sites More sharing options...
Sam Nugent Posted October 6, 2006 Report Share Posted October 6, 2006 What is all that about shaving your head randomHaha well seeing as this topic's about a disc rotor... then you jus say about the bike show out of the blue, so he jus joined in lol. Quote Link to comment Share on other sites More sharing options...
aener Posted October 6, 2006 Report Share Posted October 6, 2006 (edited) I like to eat rectangle biscuits dipped in hot salsa sauce...Try them - REALLY nice Edited October 6, 2006 by Flipp Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.