Calibration Tweaking - or -

[lorduintah]

I have noticed a number of users who send their calibration files in - Coach Boyd or John - they wave the magic wand and make a few "educated" tweaks to the parameters. On the other side, we have those who have a third party PM (whatever brand) and seem to be getting good, if not nearly perfect correlation of the iBike to the PM.

My question is probably something many of us wonder about - what tends to be the few reasons that tweaking is done? Would it not be better to, say, run three calibrations and average the parameters to make a unified profile (assuming all you want to do is calibrate all the time) - OR - run the calibration and CDs as described many times (more than 4 CD, low wind, same kind of road/surface you do most of your riding on,...) and use what the iBike and software come up with as the parametric solution?

It is either that or John/Coach need to describe what trends they see when examining calibration data lead them to tweak and how much is enough etc. Having them do all the corrections is a nice idea - but I fear that they really do not have that spare time - and I'd rather they continue to improve the product with that effort, personally...

Tom

[Velocomp]

This is an excellent and fair question.

Now that we have thousands of iBikes out there we are getting data that is allowing us to better understand the behavior of the iBike under a wide variety of calibration conditions.

We are gathering this information and are preparing revisions to the fw and sw that will incorporate all of this accumulated wisdom, making the calibration procedures both simpler and more robust.

[benlane]

this is an excellent post.
I have been backwards and forwards with Boyd a good few times as i seem unable to get a consistent profile, and seem to get some fairly odd results.
Boyd does, as described some tweaking and the numbers look good.
However., if I change wheels and go and do the coast downs again, then map in my windscale and riding tilt i get a result which gives me very low power outputs.

I feel a bit like I am badgering boyd to death about it sometimes, and I really do appreciate his time, so anything that can explain to me in laymans terms how I can replicate the tweaking would be very welcome.