Would it be possible to use this part:
“SRAM full mount/UDH post caliper mount, 160 rotor no miter”
for 180mm post mount? I have looked at the dimensions for where it needs to be placed for 180 and it seems like it would work but I’m curious if there’s something I’m missing? Thanks!
I would say unlikely as 180mm post mount sits further from the seat stay/dropout and would require longer “legs”. But a quick model or drawing would be able to confirm either way. Worst case you run an adapter.
Also, its worth including a link and/or picture with any question here. Will help with people giving answers and also for posterity’s sake. For anyone else This is the mount in question.
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Thanks for posting the picture @bushtrucker . Yes that is the part I’m referring to!
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I was in the process of designing a brake mount, so I threw those two 3D models (thanks Paragon for putting those on your website) together to see what happens. Here’s how they would look with a 16mm diameter seat stay.
You wouldn’t be cutting off a lot of the brake mount, but it looks like you would be able to use it for 180 post.
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Wow! Thank you @Spencermon looks like it will work for my build!
This forum is such a great resource with helpful people
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Good luck. Make sure to post your results. I don’t know everything, but it doesn’t look like a ton of material attaching the brake mount to the seatstay. I hope it is rigid enough.
I was thinking I may add a small plate brace in the middle
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I hacked up an IS mount and shoved it in that big open space. Should be plenty rigid now. I like how it looks too. Going to run an adapter and 200mm rotor on the rear.
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0/10 do not recommend doing what I did but it did end up sorta working. Kind of a pain in the ass but got it welded on for 180mm disc.
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Super cool that worked! Can we get a pic of the inside too? How necessary do you feel the extra brace you welded in is?
I don’t have a picture of the inside right now I’ll get one later. Towards the dropout I used every bit of that extra plate that I added to the tab. If the seatstay we’re butted to the inside edge of the dropout it would work easier I think , but it was spaced in maybe .200” or so because of the asymmetry of those udh dropouts. So that made the disc tab barely touch the seatstay. I cut the front which lowered it and built up the edge a hair and got it fitting pretty good but it was a lot of work.
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Picture of inside of tab. Kinda wonky haha. Got more blueing on that tab than I would have liked too. But here’s a couple shots of the completed frame. Really happy with it.
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Could not have built this without the awesome parts from paragon! And all the helpful info I’ve learned from this forum
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Thank you so much! Glad we were able to provide parts which were useful! - Coco
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That looks like a proper fun bike too. Mighty jealous of a fun hardtail like that. I can see why you wanted a 180 brake mount
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