Ok… here goes.
I had a quick spin out on the TT first thing, thinking that i’d get a ‘before and after’ comparison data set for power at set speeds, but it was clearly too windy, so just used it to check bike over.
Then, onto setting up for the base line data from BFF
Its challenging gettng everything in the right place for the app, but patinc will get you there… I ended up with a really heath robinson set for mounting my phone using my bike maintenance stand, an old clip aerobar, and a handlebar phon mountclip… worked a treat!
The I did the assessment. My numbers weren’t too bad, with my knee angle a bit more conservative than I thought, but my torso angle OK
The sotfware then allows you to play around with keypoints… of most interest to me were hip position (in effect moving the saddle) and wrist position (moving the stem)
I initially chucked my saddle forward 20mm, which gave me
Then also moved it up 20mm
and finally, lowered the stem by 20mm and moved the bars forward 15mm by playing around with a spare stem with a big drop, and moving spaces in the stack about… which gave me
My key measures all look better… knee angle a bit higher, but still well within the sensible range at 154°, hip angle actually increased by 2° in the more aero position, Torso angle a lot lower by 8°, and knee moved another 20mm in front of the axle.
I think my back looks flatter, and i’m lower atthe front by some way so hoping it’ll be quicker.
Had a quick spin after, and it felt comfortable.
Will keep playing to see if I can squeak another small gain here and there.
Overall, the app is great. Its a bit clunky in places, and you’ll need to spend time working out how to use it, but once you’ve got that sussed, it works really well. The image recognition is really quite good once you’ve found stickers that are clear enough (I ended up using bits of insulating tape)
Finally, here’s a before and after…