The correct answer is get a bike fit and let them size it. A cheaper alternative is to set your bike up on a bike trainer and take pics of yourself in your typical aero position. The arm ideally should drop down at a 90* angle from the shoulder and the elbow will be at a 90* angle also.

The correct answer is get a bike fit and let them size it. A cheaper alternative is to set your bike up on a bike trainer and take pics of yourself in your typical aero position. The arm ideally should drop down at a 90* angle from the shoulder and the elbow will be at a 90* angle also.

Ah, 90 and 90. That helps, I'll get on that, thanks!

Just remember sometimes comfort trumps the perfect position.

I have read and been told an ideal arm postion is one that lines your upper arms with the angle of your fork then having your forearms level with the ground. I believe 90/90 may work for some but from a force distribution stand point it is not ideal.

Ultimately, it's all about where you can stay comfortable the longest and working from there.

If you look at Scott's second photo, it would appear his arms fall into this position (lined up with his fork) but an older photo shows him at more of a 90/90.

To be truthful I'm due for a refit on my bike. I put a new saddle on and tried to match up the measurements to the old ones. I really want to get shorter cranks first though and that will definitely require a refit.