Admit your ignorance - things you've only just realised/learned

[N0bodyOfTheGoat]

To me it looked like his standard setup has his knees coming up above the bars. Personal opinion but I'd have said that was too low in the first place. Happy to be shot down, especially as I now have evidence to back me up. 😉

In the name of inprecise science, I've just sat on my road bike barefoot using the electric meter cupboard to hold on to for balance and with my right pedal roughly parrellel to the ground and forward, the top of my right knee is floating hand on the same horizontal plane as 15mm of spacers above the conical spacer.

Lower back has been a bit dodgy recently, so there's an additional 15mm spacers under the adjustable Deda stem (when good all 30mm spacers under stem, luckily steerer is alloy, so internal steerer support not critical), that's at -30 degrees. BB to saddle top is ~72cm, saddle tip to bar tops is ~54cm, saddle top to bar tops drop is ~3.5cm. Bar tops ~94cm off the floor. Head angle 72.5 degrees, 210mm headtube (610mm stack).

All good to flip the stem to +40 degrees for the aero gains?

 

[Pblakeney]

In the name of inprecise science, I've just sat on my road bike barefoot using the electric meter cupboard to hold on to for balance and with my right pedal roughly parrellel to the ground and forward, the top of my right knee is floating hand on the same horizontal plane as 15mm of spacers above the conical spacer.

Lower back has been a bit dodgy recently, so there's an additional 15mm spacers under the adjustable Deda stem (when good all 30mm spacers under stem, luckily steerer is alloy, so internal steerer support not critical), that's at -30 degrees. BB to saddle top is ~72cm, saddle tip to bar tops is ~54cm, saddle top to bar tops drop is ~3.5cm. Bar tops ~94cm off the floor. Head angle 72.5 degrees, 210mm headtube (610mm stack).

All good to flip the stem to +40 degrees for the aero gains?

Do whatever suits you to alleviate your back pain but raising your bars sounds like a sensible option.