So follow up for the sake of the thread and not just being a private email to John here.
Since I’ve finally been able to figure out how to get my KickrBike to work with bluetooth (at the cost of headphones ), I did several passes and tests tonight.
ANT+, on FE-C (else I get signal drops I had noticed when not using the FE-C ANT+ signal), as mentioned in the start of this thread the delay.
I’m kind of under the impression now that it is more than a delay; but actual… “lack” of data being transferred, or certainly being transferred at a slower rate, with a lot more averaging going on. Which, I haven’t actually looked up the specs of ANT+, but is something I am assuming, is going to be a slower, and smaller, data rate. As an interesting thing I noticed, if I disabled the 3 second average power displayed… I actually saw zero difference in some quick and dirty tests. It seems to update power every second on the screen, yes, however, I saw no change in results while on ANT+. It was a random attempt to see if this ‘averaging’ was causing a possible delay in signal, and perhaps have some sort of impact in this situation. This was not the case.
Fixed the issue instantly (I unfortunately didn’t do the average power setting, as I did BT first and it didn’t cross my mind).
And an interesting note; the Bike actually at times did indeed “predict” the climb, it was spooling its way up maybe a quarter second before an incline started on that super tight test hump; not enough to make me want to complain about it, but it did seem to be a split second too early.
So my takeaway is the ANT+ doesn’t have the bandwidth… after a quick wiki check while typing this up, it appears BT, even if looking at BT LE (low energy), the difference in data rates is anywhere between 100x and something like 10,000x +.
I have no idea if this can be resolved by software; so it’ll be interesting to see what ZHQ recommends. (Shame the KickrBike didn’t get the ability to be hard wired… seems simple enough for its price)
Side comment about when I was testing ANT+ that was funny. I was able to rip through that segment so fast at one point (I was actually using “Two Bridges” route, seems “The Esses” puts you in same place just opposite direction for the record; both are something like ~.5 mile away or less)
Anyways; I ripped through that little dip so fast on ANT+, that my Bike didn’t even react. I was going downhill from the southside again heading north; and I went so fast (300w ish) through it that I ended up, going from pointing down still from the descent… to straight and level; it didn’t even react to the incline thought that was kind of funny; and indeed shows the real difference here between ANT+ and BT in t his situation; the BT took it like a champ, the Bike responded and reacted pretty much bang on how I thought it should.
Anyways; I do hope we hear from ZHQ on this; again, no idea if it’s even resolve-able; but here’s to hoping.