Originally Posted by
twocicle
Good news about Q-Factor. I measured (rough) 150mm on the front/captain, and 159mm on the rear/stoker. My wife is really happy to hear that about her cockpit, as it's only 4mm wider than her road single w/triple. Our previous Santana had her at a tripod stance of 172mm which is really tough on a 5'2" stoker. Heel clearance is now identical to her single at 2.5cm, unlike the Santana which had 1cm less. So things are looking really good for biomech leg setup.
The Santana stock Ultrgra cranks that I have worked with have had a wider Q factor than needed due to a very long BB. I replaced old style Ultegras and long bottom bracket with daVinci cranks and 113mm square taper BB and get 164mm Q factor on both an Arriva and Noventa. Probably could go a few mm narrower if needed.