cycling
18. Juli, 09:57 Uhr
Hi everyone.
Frame (6061 that has done around 12500km according to bike computer) of my current bicycle has developed crack around seatpost. It was small at first (year ago, it looked like a minor scratch, but grease from inside the seat tube was leaking through it, suggesting it wasn't just a scratch) and stayed that way for a long time, but it has started to grow quickly in about last \~200km (200km ago was when I was doing maintenance, and I am sure it looked the same way it looked year ago). Anyway, I have found a replacement frame, but I am bit undecided on frame size.
Geometry of my current frame is approximately [this one (given size is 18")](https://www.bikegeocalc.com/#30Leader+Fox+Argus+29+18%22+2018a0b4c812.70862d302.26825e679.09475f739.29952g1000.37072h469.27727i368j368k1467.41208l932.75094m1206.45069n825.10409o1246.91248p1057.53603q1246.44507r1378.25206s1057.62213t31.8u40v-25w0.45758x10y280z40A0B150C25D505E45.5725F172.5G30H30Z12Unnamed+%232a0b4c785.28081d275e651.66694f712.03127g973.10247h441.84947i340j340k1422.15322l811.30417m1196.31617n703.65732o1236.77796p892.37418q1272.79051r1404.68415s891.15945t31.8u40v6w12.26076x10y280z40A0B150C25D393.36688E45.57249F172.5G30H30Z), and replacement frame has either [size S (with some sources describing it as 17,5")](https://www.bikegeocalc.com/#14Accent+Point+Sa0b4c807.8111d302.84041e681.42427f729.5152g1002.77882h470.47989i368j368k1458l932.73153m1212.01578n829.36534o1249.63799p1056.92753q1253.14652r1384.90248s1058.78072t31.8u40v-25w0.09493x10y280z40A0B150C25D504.71068E38F172.5G30H30Z12Unnamed+%232a0b4c785.28081d275e651.66694f712.03127g973.10247h441.84947i340j340k1422.15322l811.30417m1196.31617n703.65732o1236.77796p892.37418q1272.79051r1404.68415s891.15945t31.8u40v6w12.26076x10y280z40A0B150C25D393.36688E45.57249F172.5G30H30Z) or [size M (with some sources describing it as 19")](https://www.bikegeocalc.com/#14Accent+Point+Ma0b4c807.83471d303e670.6553f766.10993g1002.93841h470.50351i368j368k1482.69015l932.9142m1236.63944n829.54801o1274.26166p1057.11019q1277.77018r1409.51899s1059.04745t31.8u40v-25w0x10y280z40A0B150C25D505E38F172.5G30H30Z12Unnamed+%232a0b4c785.28081d275e651.66694f712.03127g973.10247h441.84947i340j340k1422.15322l811.30417m1196.31617n703.65732o1236.77796p892.37418q1272.79051r1404.68415s891.15945t31.8u40v6w12.26076x10y280z40A0B150C25D393.36688E45.57249F172.5G30H30Z). Tool is a bit stubborn, and geometry is not entirely accurate (mainly in case of my current bike, which has official ETT 1cm shorter), because whenever I enter one value, tool changes half of the others. Or the geometry given by manufacturers are not accurate and impossible in regular three dimensional space.
My question is, my current frame is closer to the S one, but I am now wondering if perhaps M one with shorter stem (current one is 100mm, and 25° upward angle, included on linked geometry)) would be better choice?
For context, saddle is currently moved slightly forward, I am around 178 cm tall, and my usual rides are nice trips through the nature (I am not a trail park rider), either paved or unpaved roads, and occasionally short bumpy segments (rocks, or roots) that are easier to ride when standing on the bicycle (not sure what is proper English term)