Wondered for some time whether to reply to this, but as I'd like you to ride for the NC team, then I thought I'd share my view. Of course, I'm fairly new here and you don't really know me, so if you disagree with me at the end of this, please feel free to tell me to f**k off! Personally, I'm struggling with Bkool data as much as you seem to be, but from a totally different perspective at the other end of the scale. I'll come back to this later.
On one hand I agree with what you're saying and respect it but on the other hand I think you're over-reacting, have no need to feel pissed off and won't have any unfair advantage on your other NC riders when the day of the competition comes round.
So, I accept that any fair competitor is going to be as pissed off about unreliable data that overrates their performance as data that underplays how well they are doing. But in the case of the NC, where its likely that all competitors are going to be riding Bkool turbos, that shouldn't really be an issue.
Why? Well its clear that Bkool overrates watts at the top end, but its likely to be doing this for all riders at the standard required to qualify for the NC (and that certainly doesn't include me). I think
@CXRAndy said a few days back that Bkool doesn't seem at all linear in the way that it measures power. In the last few days, I've watched:
1. The lead riders starting the Thursday change gang at 1000W
2. You going up a steady 6% gradient today at a steady 600W - that's impressive
3. I did a 1km warm up in the velodrome today. When I looked on Strava, the top riders are apparently lapping the velodrome at 95mph!! Frankly, that's f***ing unbelievable!!
From everything I've read on this forum, it seems as if you have sufficient power to push near enough to or beyond the max resistance of the Bkool turbo, then somewhere between the BSim software and algorithms and the Bkool turbo firmware, you'll end up with a sprinkling of Bkool fairy dust and a power output and speed which isn't really believable.
So, if you're riding on say Zwift with a Bkool turbo, or Bkool with a Wahoo Kickr, then these things probably do matter and make a level playing field difficult. So, on this hand I understand your annoyance. And if you're riding a Kickr or similar, with a far greater resistance, replicating far stiffer gradients, then this is probably annoying.
But on NC day? By all means get your Bkool recalibrated, but as others have said, I can't imagine other NC competitors will be worrying too much about this, and I doubt you'll be at any advantage or disadvantage. It should be a level playing field and it should be, as others have said, a fun day. I'll certainly try to watch as much as I can on the day.
I said I'd give my own perspective, partly to offer a different view, but if I'm honest partly to let out my own different frustrations with Bkool right now, which are actually caused by the same issues that are annoying you, but affecting me quite differently.
I bought a Bkool trainer last winter and rode it for the winter months, but solo, with no competitive rides. I came back to it at the end of summer, rode the Summer Cup and enjoyed it, so joined the Cycle Chat league. And I've been struggling!
For context, I'm 62, but I ride at least 4 times a week, around 8k miles a year and throughout the summer I'm riding at least 2 x 70 mile rides a week, with guys who still race at Vet level and I'm averaging around 17.5 mph for most of those rides. I've also played sport, with a few short breaks, since I was at school, so I'm quite fit.
But on Bkool, I'm way behind the best riders. I think its clear the best Cycle Chat riders are clearly fitter than me, but using today as an example, on a 20 mile time trial I came in over 16 minutes behind the first guy home. I felt a bit heavy today, but when I looked at my time on Strava, I'd averaged 22.5mph. If I adjusted that to 10km TT, I'd have come in at about 26.40 on a flattish course, which is actually credible for me, and a bit better than my PB on our club 10 course, which is a bit lumpier than today's course. Against the best TT riders in my club, I'd expect to be around 4-5 minutes slower on a 10, and about 8-10 slower on a 20.
The times of the guys at the front today are averaging around 32mph, which seems to be heading towards the sort of times a pro would find acceptable. I checked Rohan Dennis's best average time for a pro of just over 35mph on a 14 mile route, so 32mph is going some!
The effect this has on me is a little dispiriting and tends to make me want to give up. Regardless of age, I'm still fit and the competitive side of me gets pissed off with the way I'm trailing in so far at the back. I don't expect to be competing at the front, but I'd like to be more competitive than I seem to be.
But, if I look at my times on the tables of Vet 3 riders, I'm actually near the top, and even on the general tables, I'm doing pretty well. So, I know I'm riding against some good riders, and that's good, and it gives me something to aim at. Although I think I'm currently suffering from a lack of Bkool fairy dust, and get a bit down when others seem to be getting a liberal dose of the stuff, I still think I can improve, and that as I do so, there's every possibility that my times can improve and the gap will close.
So, in summary, I think we've both been afflicted by Bkool's wacky power measurements and speed calculations. Despite that, for me if I can keep improving my own performance level, Bkool is doing its job and I'll keep trying to push up the leagues.
You're at the other end of the scale from me, and struggling with stuff that I can only dream of right now! But I think for NC you're on a fairly level playing field, so I hope you'll stay with it and strengthen the UK NC team.
Or, as I said at the start............ you can tell me to f**k off and mind my own business........... or sympathise with my struggles if you want to!