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Re: Winspace T1550 Build (NEW 1550 2.0 thoughts) Hi, is anyone using the Magene PES P505 on the Winspace 1550 2.0? Have you had any issues? I know the official site says it's not supported, but I've seen that some people managed to install it on other T47 frames.
January 28, 2025, 10:34:34 AM 		1
Re: Help me size my frame ! Yes, you could use geometry to find an answer to your questions. But first ask yourself, do I want to be an athlete or a mathlete? I know you want to be the former, and we all know that athletes are lazy, so instead of doing all sorts of complicated math do the lazy thing instead: ask the computer. Specifically, use CAD software to find the angle of the dangle and all that stuff. (I am not aware of an online bike fit calculator, so CAD it is.)

Based on the geometry chart for the Yoeleo R12 size 54 (and me not making any mistakes) it looks as if you need a 120mm stem (119.325 in the attached diagram) to get to your 'aggressive' fit. Also, you'd need about 60mm of steerer tube above the headset, maybe a bit more (that's the 59.8966 number). Roughly 35 to 40mm of that 60mm will be covered by the stem and the rest will have to be taken up by the headset cap and spacers.

60mm is arguably a bit much, especially if it turns out that you find the aggressive fit not that comfortable after all and wish to adopt a more relaxed position. As you say, you can use different stem degrees to raise/lower the handlebars but there is only so much you can adjust with that method. Maybe one size larger would be better; if you like, I can see how things shake out for a different frame - just let me know the model and size.

Two quick additional notes about stems: typically, you install stems in the negative direction, meaning that a -10 degree stem will sit lower than a -6 one. The attachment assumes a -7 degree stem.

If I have time tomorrow I'll try and answer some of your other questions.
April 21, 2025, 04:31:43 PM 		1
Re: Help me size my frame ! another thing is don't forget to account for the reach of the handlebars and shifters themselves, some could be 10-20mm longer/shorter than another
April 21, 2025, 07:44:59 PM 		1
Re: Help me size my frame ! Quick response to the spacers question, depends on the stem angle entirely. -6, -17, 0, they'll all affect final bar height.
April 21, 2025, 07:45:23 PM 		1