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Topics - deezums

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29+ & 27+ / Sanity check my P9 build, please!
« on: December 16, 2017, 12:15:19 PM »
Hello everyone!

I'm pretty new to MTB, went riding with some friends a while ago and had a few nice bikes to try. I rode a specialized epic sworks, and a stuntjumper fsr comp carbon 6fattie. I had a lot more fun on the stuntjumper! According to this the ican p9 is pretty similar.
https://geometrygeeks.bike/compare/ican-p9-2017-m,specialized-stumpjumper-fsr-carbon-6fattie-2016-m/

I've ordered a P9 frame from Ican, as well as a 40mm wheelset which should all be here well before spring! I found a deal on a new rockshox monarch plus 210x60, and I'm about to pull the trigger on a 180mm dual position lyric. The frame geometry calls for a fork crown to axle of 571mm, the rockshox lyrik 180 is happily 572mm! I have noticed rideczech mention wanting a fork 20mm longer, when it comes available!

I've noticed most P9 builds I've seen seem to use shorter forks, in looking at forks for the past week I'm thinking this might just be because the market isn't there yet? I've searched a lot and can't find much I would like that has 110 front axle and fits 3" tires!! It's not easy finding options within my budget that are still available, then finding geometry and tire fitment specs is always hit or miss. I am open to suggestions, if you would like to share!

Would it make sense to use a dual position shock to have the option of ~1.33 deg steeper head angle on the fly or would a cheaper, simpler solo air be better? Is it a bad idea to run so much front shock travel? I think I would like the extra bb height, and if I understand correctly I need 571mm crown to axle to maintain 66 degree head angle as shown on the geometry drawing?

I plan on running GX eagle components, 165mm crankset. Is this the adapter I need for BSA?
https://www.ebay.com/itm/SRAM-Bottom-Bracket-GXP-Team-Cups-English-73-68mm-New/382257639479?epid=2254439874&hash=item590054b037:g:xcEAAOSwO7hZ6-5u

Thanks for reading, and for any and all advice!!

 



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