From the numbers a solid fit. I'd guess you are 5'6" or so? 12cm of drop is certainly healthy, but (barely) fits the FIST predicted (professional triathlete) range using 79 degree of seat tube angle ( C = .005D2 -.185D ) +- 1.5cm It's a lot for an age grouper, but plenty run that much without issue.

Position would probably necessitate shorter than stock crank arm length... what are you running? It makes sense that your Shiv is maxed out on drop, as it is a somewhat taller bike. The Tririgs alpha's make it possible.

Off the top of my head, a Felt IA in 48 would work, so any P series in 48 should be good as well. Really, your pad x,y are likely achievable on any bike in that 48 range. If you can hit the drop on a Shiv, you can probably hit it on anything. Just be careful not to buy a size bigger, as that could kill your ability to hit that drop number (assuming it is a solid number)

Pictures or video would be needed to assess further.

Thanks for the reply. I am currently on 167.5 cranks on an XS shiv. and you are correct that I am 5 6''

Ill post a video here in a minute with a side view from the fit.

CT

So id like a little more info from your Retul fit, what was your hip flexor measurement? Your hamstring flexion measurement? Also based off Retul Zin what did your fitter come up with for effective seat tube angle?

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Robert Driskell
Certified Master Body Geometry fit Technician
Certified Master Retul Fit Technician
Zipp Service Course Specialist
Bikes Plus Pensacola Florida

Hip flexor both left and right mild

Hamstring flexibility measurement 57 left 54 right full ROM on both

Eff seat tibe angle 82 deg