niconj Posted September 20, 2014 Report Share Posted September 20, 2014 (edited) WTF!!! I tried to fit the Hope Trialzone caliper No.3 today on my frame and it doesn't fit. With my PM Shimano brake I had to put 2mm shims under the caliper but I can't do this with the IS caliper I got now. First I though it was a Shimano related problem since I had the same thing happening with another frame but it isn't. So the Mono Trial 180mm rotor touches the upper edge of the caliper even with the hub axle in its lowest position. Again, some trials specific part that just doesn't fit. f**k!!! Edited September 20, 2014 by niconj Quote Link to comment Share on other sites More sharing options...
onzatpro09 Posted September 20, 2014 Report Share Posted September 20, 2014 Is it definitely a 180mm rotor, or could it be 183mm? That is the only thing I can think of other than the brake mount being placed incorrectly :/ Quote Link to comment Share on other sites More sharing options...
niconj Posted September 20, 2014 Author Report Share Posted September 20, 2014 Is it definitely a 180mm rotor, or could it be 183mm? That is the only thing I can think of other than the brake mount being placed incorrectly :/ I tried two different rotors. A Shimano SLX and a Mono Trials. Both are 180mm. Quote Link to comment Share on other sites More sharing options...
isitafox Posted September 20, 2014 Report Share Posted September 20, 2014 File the mount slightly Quote Link to comment Share on other sites More sharing options...
niconj Posted September 20, 2014 Author Report Share Posted September 20, 2014 File the mount slightly How? The mount is too low. Filing it doesn't do anything. I'd have to file the caliper and I don't think that this is an option. Quote Link to comment Share on other sites More sharing options...
isitafox Posted September 20, 2014 Report Share Posted September 20, 2014 file the holes upwards to lift the caliper? Or get a post mount Trialzone caliper. Quote Link to comment Share on other sites More sharing options...
niconj Posted September 20, 2014 Author Report Share Posted September 20, 2014 (edited) file the holes upwards to lift the caliper? Or get a post mount Trialzone caliper. I don't think that this'll hold under pressure. The second option is the only I can think of right now but that is money I wasn't counting on spending. f**k!!! The rotor scrapes the caliper in the red area. Excuse my drawing skills. Edited September 20, 2014 by niconj Quote Link to comment Share on other sites More sharing options...
FamilyBiker Posted September 20, 2014 Report Share Posted September 20, 2014 get someone to grind down your rotor,best option imo.as long as the ring of your rotor is completely matching the pad it'll be fine Quote Link to comment Share on other sites More sharing options...
niconj Posted September 20, 2014 Author Report Share Posted September 20, 2014 get someone to grind down your rotor,best option imo.as long as the ring of your rotor is completely matching the pad it'll be fine There are two options. Getting a new caliper for 100€ or grinding down the rotor. That is some f**ked up shit. I am really angry right now. Should post in the Angry Thread. Quote Link to comment Share on other sites More sharing options...
SamKidney Posted September 20, 2014 Report Share Posted September 20, 2014 Longer bolts and spacers between the frame and calliper... Easiest and most obvious method. Quote Link to comment Share on other sites More sharing options...
niconj Posted September 20, 2014 Author Report Share Posted September 20, 2014 Longer bolts and spacers between the frame and calliper... Easiest and most obvious method. How do longer bolts change the position of an IS caliper? Quote Link to comment Share on other sites More sharing options...
SamKidney Posted September 20, 2014 Report Share Posted September 20, 2014 Isn't the calliper too low in relation to the disc? If you space the calliper up away from the frame it would clear it? I remember changing rotors from a 180 aztec to a 185 G2 and had to space the calliper away from its adaptor to clear it Quote Link to comment Share on other sites More sharing options...
harmertrials Posted September 20, 2014 Report Share Posted September 20, 2014 Sam you're referring to a post mount 1 Quote Link to comment Share on other sites More sharing options...
SamKidney Posted September 20, 2014 Report Share Posted September 20, 2014 Ah my bad, thought he was using a post mount calliper on an addaptor Quote Link to comment Share on other sites More sharing options...
niconj Posted September 20, 2014 Author Report Share Posted September 20, 2014 (edited) This is the position the disc is in with the axle in its lowest position. I cant even move the wheel then w/o the disc touching the caliper. When tightening the chain it gets worse. It's a Shimano Disc but it's the same with the Hope one. On the front Trialtech Sport Lite forks the same caliper fits perfectly. I've already contacted Echo to see what they think about it. I will also contact the seller I bought the frame from in June. Disc¹ by niconj, on Flickr Disc² by niconj, on Flickr Disc³ by niconj, on Flickr Edited September 20, 2014 by niconj Quote Link to comment Share on other sites More sharing options...
weirdoku Posted September 20, 2014 Report Share Posted September 20, 2014 Put a ruler across the diameter of that rotor and post a photo. Quote Link to comment Share on other sites More sharing options...
niconj Posted September 20, 2014 Author Report Share Posted September 20, 2014 Put a ruler across the diameter of that rotor and post a photo. It is 180mm. Just like the Hope rotor. Quote Link to comment Share on other sites More sharing options...
weirdoku Posted September 20, 2014 Report Share Posted September 20, 2014 Have you actually measured it to confirm? Quote Link to comment Share on other sites More sharing options...
lifes-a-trial Posted September 20, 2014 Report Share Posted September 20, 2014 Had this problem on my IS forks.Was running Hope mono trial caliper with Magura 180 rotor .I dressed the outer edge of the rotor with a grinder by spinning the wheel and holding the grinder in a fixed position.this was done as a temporary solution so I could ride that day, but I must admit it worked a treat and you couldn't tell it had been modded. Quote Link to comment Share on other sites More sharing options...
MartMini Posted September 20, 2014 Report Share Posted September 20, 2014 i had this on my front brake. i ended up putting pressure on the caliper away from the frame as i tightened up the bolts. Just managed to make it clear. Quote Link to comment Share on other sites More sharing options...
niconj Posted September 20, 2014 Author Report Share Posted September 20, 2014 Have you actually measured it to confirm? Oh please.... As if Shimano made a 183mm rotor: SLX Disc by niconj, on Flickr I dressed the outer edge of the rotor with a grinder by spinning the wheel and holding the grinder in a fixed position. I tried that but I would have to grind off at least 2-3mm which is way too much! Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted September 20, 2014 Report Share Posted September 20, 2014 http://www.tartybikes.co.uk/disc_brake_rotors/hope_mono_trial/c76p24.html 1 Quote Link to comment Share on other sites More sharing options...
niconj Posted September 20, 2014 Author Report Share Posted September 20, 2014 (edited) http://www.tartybikes.co.uk/disc_brake_rotors/hope_mono_trial/c76p24.html So basically my best bet would be a 175mm rotor? Didn't know something like this existed. Have you come across this problem in your shop when building up Dual Disc Echos? Is there a huge hold/bite difference between a 175mm and a 180mm rotor? Edited September 20, 2014 by niconj Quote Link to comment Share on other sites More sharing options...
FamilyBiker Posted September 20, 2014 Report Share Posted September 20, 2014 (edited) the question is,are there cheaper alternatives to a 175? Edited September 20, 2014 by FamilyBiker Quote Link to comment Share on other sites More sharing options...
bing Posted September 20, 2014 Report Share Posted September 20, 2014 Sounds like legendary Chinese build quality to me, not the hope brakes. Get a 175mm rotor, that'd be the best plan, unless you want to go down the new frame/warranty route. Plus the old school mono trial rotors are better anyway Quote Link to comment Share on other sites More sharing options...
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