Using CdA / Testing Protocol Advice?
Posted: Mon May 14, 2018 11:29 am
I will be using the CdA function in my ibike in the coming weeks to see if I can eek out any speed gains in time for Nationals, June, 14.
Some questions that I hope the group can help me with:
- - Is the CdA function precise enough that I will be able to tell the difference between, let's say, helmet positions?
- - My iBike is mounted between my aero bars (see photos below and attached). I seems as though nothing will interfere with it (one photo shows my hand on the bar, just in case). Is that right?
- - I have an Xlab "torpedo" water bottle that mounts above and behind the iBike - again, it seems like it shouldn't interfere, but I wanted to check (it mounts on the carbon platform that is velcro'd to the TT bars in the overhead shot. I can see the iBike when the bottle is in place, so the whole body of the iBike is in front of the bottle).
- - The ONLY place where a mount fits is on my aero bars. This isn't a problem except if I want to try a different angle for the bars. The iBike tilt will be incorrect, and probably the wind sensor will be affected also? What protocol should I use if I want to try a different TT bar angle? Do I need to do a cal ride in-between CdA tests? What's the best way?
Thanks all for your help!
Peter in StL
Some questions that I hope the group can help me with:
- - Is the CdA function precise enough that I will be able to tell the difference between, let's say, helmet positions?
- - My iBike is mounted between my aero bars (see photos below and attached). I seems as though nothing will interfere with it (one photo shows my hand on the bar, just in case). Is that right?
- - I have an Xlab "torpedo" water bottle that mounts above and behind the iBike - again, it seems like it shouldn't interfere, but I wanted to check (it mounts on the carbon platform that is velcro'd to the TT bars in the overhead shot. I can see the iBike when the bottle is in place, so the whole body of the iBike is in front of the bottle).
- - The ONLY place where a mount fits is on my aero bars. This isn't a problem except if I want to try a different angle for the bars. The iBike tilt will be incorrect, and probably the wind sensor will be affected also? What protocol should I use if I want to try a different TT bar angle? Do I need to do a cal ride in-between CdA tests? What's the best way?
Thanks all for your help!
Peter in StL