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What I've been totally wasting my time on.
Do I know what I'm doing? Absolutely not
Am I having fun? Hell yeah
Interestingly, the chainstay length is about 438ish like this.
@wwwru, how are you measuring the chainstay length? I'm doing it with the shock totally uncompressed (Which is how I though the chainstay was suppose to be measured from manufacturers)
Evo rear triangle is longer by 5mm (chainstay length or rear center per geometry charts) It is tough to measure the length since it's dependent on the rotation of the rear triangle and the measurement is supposed to be from the center of the BB.
I asked on the Epic EVO Facebook page to take some linkage measurements (not the triangle) and got enough info to determine that a simple linkage swap is impossible.
Haha i'm completely with you on that. I also had some hardware for a 130 front and 120 rear
I'm actually in contact with the supplier, im trying to wrestle with him, telling him that the link is not the evo link and the rear triangle is a bit longer. But hes convinced that the rear is the same haha.
I wish I could get the true dimensions of the epic evo rear triangle so I could send the supplier the evo rear link, and the factory could revise the design.
Its still and insanely goodlooking frame with the short comings of being marketed as the evo.
Its interesting that you tested and got less travel than the normal epic, which is 100mm.
Could you share how you got that measurement? I have the non brain rear triangle so I can see if mine is any different.
Normal epic as seen in the picture I posted.
True, but I am not sure if the revised rear triangle is any different otherwise to make any impact on the amount of travel.
Main reason why the Evo has more travel is the linkage design which has a leverage ratio close to 3:1 vs 2:1 on the regular epic. 40mm stroke with 3:1 leverage is capable of 110+ travel.
Yes
I tested the frame with 190x45mm shock and got approx 88mm of travel. It is tough to measure, but I definitely wasn't getting anything even close to 120mm of travel.
With 40mm stroke, you will only get less than 80mm rear travel I assume. Assumption is based on the fact that the regular epic get 100mm with 52.5 stroke, so this makes the leverage ratio less than 2:1.
Yes, Evo linkage will not fit this frame. I did some testing and the frame might be capable of slightly more than 100mm travel, but I do not think you will get 110mm like the evo. That being said, with the leverage ratio of 2:1 max, you will need a very long stroke to get over 100mm of travel. I also think that a 200mm shock will fit. FYI, my frame was advertised to have 122mm of travel, which is impossible with this linkage set-up.
Good luck to you building this up. My plan was 130 front and 120 rear, but since the frame isn't capable, I opted to return it. I was planning on reusing the suspension components I currently have, so to build a 100/100 capable XC bike (what this frame is designed for) would cost me a lot of unnecessary $$. If I had the XC suspension components already, or I was buying suspension specifically for this frame, I would have kept it.
