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Re: Lexon "Riot 10" On a hardtail, when you compress the suspension, only the front end lowers, and the bike only moves in the direction of getting steeper frame angles. The hypotenuse between reach and stack, the distance between the bottom bracket and the top of head tube is a fixed dimension, but the triangle formed by the hypotenuse, reach, and stack changes shape such that the stack gets lower, and the reach gets longer as the suspension is compressed. The sagged reach is going to be longer than spec sheet number.

You can see the exact amount reach (and stack) changes with fork compression using https://bikegeo.muha.cc/ . For example, using the default numbers in that calculator, the reach is 407.2 with a fork length of 470 (close in length to a 26" 100mm Manitou fork). If you change fork length to 455, using 25mm travel (about sag), reach increases to 412.4. At 50mm travel (enter 420 for the fork, changing nothing else) reach is 424.7mm (+17.5mm reach). At 100mm travel, reach becomes 442.2mm (+35mm reach).

On a full suspension bike, the rear is going to compress too (maybe more since more of your weight is in the back), so the bike's attitude will stay level on average, meaning the reach is relatively stable with suspension compression.
July 14, 2021, 03:11:29 PM 		1
Re: XC frame comparable to Specialized Epic Evo (110mm travel)? If you looking at size M, the Topcarbon TCSF046/Lexon Riot in M or L (reach brackets the Epic Evo M) is essentially identical in geometry (BB drop, head angle, seat angle, chainstays) using a -1.5 degree angle headset (68 to 66.5) like the Works Components Angle Headset and going 110/120 travel. You could even go with a -2.0 headset if you want to go a tad slacker.
July 17, 2021, 03:04:08 PM 		1