TheChai Posted May 11, 2007 Report Share Posted May 11, 2007 Hi guys, i am having a bit of a problem, i havea monty ti, which is either 05 or 06 and am trying to install a magura marta on the rear, But the 160 mm rotor i have is too big, only be a couple of mm though, anyone with any ideas, i thought 160mm was the standard for monty tis (after checking cleanbikes) but apparently its smaller.. Does anyone know what size i need? Urgently need a reply! thank you Quote Link to comment Share on other sites More sharing options...
Sam Oliver Posted May 11, 2007 Report Share Posted May 11, 2007 (edited) If it is a 06 or 07 ti they will take up to 165mm. But thats with a Hope.It depends on how deep the caliper is.Just measured rear rotor on pr 07(06 ti) which has Marta's 160mm! Edited May 11, 2007 by SamMonty Quote Link to comment Share on other sites More sharing options...
TheChai Posted May 11, 2007 Author Report Share Posted May 11, 2007 :S:S so why doesnt it fit! i dont understand!? could it be a manufacture defect? unless he is using the wrong marta caliper? i.e. the front? would that make a difference? Also can u run disk brake levers upside down? Quote Link to comment Share on other sites More sharing options...
Sam Oliver Posted May 11, 2007 Report Share Posted May 11, 2007 Is your rear rotor a wavy shape? No to the master cylinders upside down! You will end up with air in them, your not even suppose to putthe bike upside down for long Quote Link to comment Share on other sites More sharing options...
Waddy Posted May 11, 2007 Report Share Posted May 11, 2007 :S:S so why doesnt it fit! i dont understand!? could it be a manufacture defect? unless he is using the wrong marta caliper? i.e. the front? would that make a difference? Also can u run disk brake levers upside down?it could be somthing to with it being a font 160 caliper, rar calipers are normally +20, so a 160 rear calliper on the back would be a 180 on the fronr, and a front 160 on the rear would be a 140, so prehaps that could be it, you cant run magura disk leavers upside down Quote Link to comment Share on other sites More sharing options...
Sam Oliver Posted May 11, 2007 Report Share Posted May 11, 2007 Looking at the Martas i think you will be ok to run upside down.They are filled to the top like a Hs 33, it's the Hopes that you can't. :$ Quote Link to comment Share on other sites More sharing options...
Hobnobs Posted May 12, 2007 Report Share Posted May 12, 2007 You can't run any open disc system upside down, or air gets in. Whether Marta's are open or not is the question. Quote Link to comment Share on other sites More sharing options...
t33zr Posted May 12, 2007 Report Share Posted May 12, 2007 grind youre disc down ffs! Quote Link to comment Share on other sites More sharing options...
RobinJI Posted May 12, 2007 Report Share Posted May 12, 2007 You can't run any open disc system upside down, or air gets in. Whether Marta's are open or not is the question.With the exceptions of Hayes and Avid.Is the rotor hitting the frame or caliper? If you're using a 160mm front caliper it won't work on the back unless you either run a 140mm rotor, or you get a +20mm adapter.If it's hitting the frame, what hub are you using? Quote Link to comment Share on other sites More sharing options...
Greetings Posted May 12, 2007 Report Share Posted May 12, 2007 I'm with T33zr on this one. Put the disc on a lathe and grind it down Quote Link to comment Share on other sites More sharing options...
Walleee Posted May 12, 2007 Report Share Posted May 12, 2007 what? why go to the bother of putting it on a lathe before grinding it? Just f**kin cut as much as you need off the top of the disc if it's wavy you'll just be making it less wavy. Quote Link to comment Share on other sites More sharing options...
RobinJI Posted May 12, 2007 Report Share Posted May 12, 2007 Or he could just work out whats wrong with his set-up? Discs that are the correct size don't rub for no reason, and 160mm is the correct size for a 221pr. All I can think of is its hitting the inside of the chain/seatstays where they curve in, which means either the rotors not a 160mm, the wheels hideously out of dish to the right, making the wheel be twisted left in the dropout, or the disc mount on the hub is positioned too close to the dropout. Quote Link to comment Share on other sites More sharing options...
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