Sam Oliver Posted February 10, 2006 Report Share Posted February 10, 2006 Was on the back wheel yesterday about to jump a gap when my back wheeljammed up, i looked back to see my rear rotor had a piece missing out of it& was all bent up. The rotor has never taken a bang & the wheel is true etc.Has anyone had a similar problem etc? I took it to my LBS & he said to mailHope & explain what has happened with a picture. Will try & load pic later if i get chance. Quote Link to comment Share on other sites More sharing options...
CurtisRider Posted February 10, 2006 Report Share Posted February 10, 2006 i snapped a formula rotor after a few weeks, that was back when all i did was endos.... hope are generally pretty good with their products that break, if its within warranty you will almost certainly get a replacement Quote Link to comment Share on other sites More sharing options...
Hobnobs Posted February 10, 2006 Report Share Posted February 10, 2006 If it was a hope mono trial rotor, then it is possible that it had cracked, and then snapped. Bigman's did the same (not sure whether it snapped though) and he got a replacement. Send it to hope. Quote Link to comment Share on other sites More sharing options...
Sam Oliver Posted February 11, 2006 Author Report Share Posted February 11, 2006 Just a pic of my sad rotor any idea's what has caused this? (poor manufacture) maybe. Quote Link to comment Share on other sites More sharing options...
Ben Geary Posted February 11, 2006 Report Share Posted February 11, 2006 Send it back to hope, there a top company and there'l sort you out, as for causing it i don't have a clue. Quote Link to comment Share on other sites More sharing options...
philking Posted February 11, 2006 Report Share Posted February 11, 2006 I have seen a few hope tiral rotors break like that. I think it is because they aren't strong enough to take the stress of trials. So basically it is a design fault, and hope are responsible to replace it under warrenty Quote Link to comment Share on other sites More sharing options...
Tomm Posted February 11, 2006 Report Share Posted February 11, 2006 In between the two broken bits on the rotor, there's a mark that looks like you've hit it on something. Are you sure you didn't? I would say though that it seems unlikely that a small mark like that could cause it to fold in two places. Hopefully you'll get a new one from Hope EDIT: Never mind - That mark looks like it's on the inside of the rotor, so probably not gonna be a rock Quote Link to comment Share on other sites More sharing options...
The Dude Posted February 11, 2006 Report Share Posted February 11, 2006 were you running the disk so the splines were pointing forwards?it makes quite a bit of difference on where the stresses go to (difference between allocated stress points instead of all over the disk)as said before, it looks like it snapped, and after some more riding its just completely given up and dicintegrated.send it off to hope and thell send you a spanking new one, there pretty proud of thier parts and sort them out if thier broken. Quote Link to comment Share on other sites More sharing options...
Jaffacakes Posted February 11, 2006 Report Share Posted February 11, 2006 You have got another crack coming on in the inside left of the picture. Quote Link to comment Share on other sites More sharing options...
Stan Shaw Posted February 11, 2006 Report Share Posted February 11, 2006 (edited) Adam at TartyBikes has a prototype 180mm Monotrial rotor on test on the rear of his Kot, to overcome some problems people have been having, its much meatier, has more arms which are wider. There are less sharp edges to reduce stress. The actual braking area is bigger too, so performance is improved!You can see a 200mm version on the Tartybikes stand at Cycology, or can test the one out for yourself on Adam's Kot which he'll be taking with him.Stan. Edited February 11, 2006 by cultiv8ed stan Quote Link to comment Share on other sites More sharing options...
Clarky Posted February 12, 2006 Report Share Posted February 12, 2006 They all crack do them hope mono trial rotors but i have never seen one snap,just send it bakc to hope.Clarky Quote Link to comment Share on other sites More sharing options...
skandy32 Posted February 13, 2006 Report Share Posted February 13, 2006 were you running the disk so the splines were pointing forwards?it makes quite a bit of difference on where the stresses go to (difference between allocated stress points instead of all over the disk)thats the first thing that came into my head! But surely with trials, depending on the trick / move, the stress of the back brake can easily go either way around the wheel. if you get what i mean!? So this problem will always eventually happen. Quote Link to comment Share on other sites More sharing options...
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