Hi @tofel, I’m using a single sided 2nd gen Stages power meter on a Shimano 105 crank
I’ve got \ had, Kicker\Garmin Vectors 2 & 3, Power2Max\Stages and Neo, the Neo reads the lowest by about 10watts from the Vectors\Power2Max
And I’m pretty sure that if you search Neo Power, you find another thread just like this
So the real difference could be even larger, if your right leg is stronger than the left
Hi @brenph, I assume you mean using the TR power match functionality? It feels like a bit of a cop out to me given the supposed 2-3% accuracy quoted in various other reviews (eg DC Rainmaker and GPLama) but guess if it works then it’s one to accept/live with.
Yes it would be powermatch. I dont really think about it… it just works. And I know about the claims but I dont really mind too much as I (currently) have a single chosen source of truth.
Not very high. Spencer +2. 1 minute interval at 262 watts.
If I put the NEO to control it, it brings it to around 262, but the assiomas read btw 270 and 275.
You’re right, it is a 5% difference. but this is a Tacx Neo 2T, one of the top of the range trainers with precision of around +/- 1. For the money, it is unacceptable to be 5% off.
Hi, Spencer 2+ first 1 minute interval showed the difference. if I continue the full interval (3 mins at 120%, 260 watts), I would’ve cooked myself as I’ve been using the assiomas to control the power on my old vortex smart trainer.
so, it’s not 30 seconds, it’s more than 1 minute that you see difference.
and again, 5% may sound nothing, but we’re talking about a high end product with advertised precision of +/- 1%.
if 5% is the variance, it means that I will have different porwer zones for outside (assioma) vs what I train inside (Neo). Having a neo being controlled by the assiomas do not make sense to me for the money I spent on this trainer.
agree with you, mate, but I find this completely unacceptable with a trainer that is considered one of the best (if not the best) out there.
garming 530 paired with assioma duos.
Neo 2T paired with Trainerroad.
just by looking at them, assiomas read higher. if interval was 260, Neo 2T is reading 260 and assiomas between 270 and 275.
I will try to record both and post it. just reading around, have a few users experiencing the same.
Yup. But… maybe our power meters are reading high rather than neo reading low (I dont think so in my case… I had 2x Flux/Flux S that read within error bars of my power2max). So without a 3rd (and maybe 4th) power meter to tell us which one is trending weirdly the test is incomplete.
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I’m on my second one. The first one had a chunk of the light blue plastic shoot out across the room. When I flipped it over, there were something like seven cracks, and the huge hole where the piece shot out.
Tacx/Garmin replaced it with a new in box unit, and now it’s cracked too, same spot. Yikes…
One year of usage (4-5 times a week) no crack so far…
Great! But just to make sure, check the area around the two back feet. There looks it cracks because some of the metal substructure apparently pushes on that part of the leg. Hoping you don’t find any cracks. I also had cracks, in the original unit, around the small screw holes on both legs. Like the plastic wasn’t built or designed for the weight/stress of riding. Having a piece of plastic shoot out wasn’t good either.
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Nothing, not a tiny crack, I am lucky I guess 
Do you have pictures?
Picked up a Neo 2T as a second trainer in case of failure over the winter and I can’t get hold of a replacement. Pretty disappointed to see that it does seem to read a lower than the Neo Gen1. I was previously using PowerTap P1S for dual recording and the Neo lined up nicely there too. Today’s ride was with a new, freshly waxed chain and new cassette. For many, the difference wouldn’t be too much of a problem, but for the Zwift Premier league where we must use the trainer as primary power source, this immediately put me at a disadvantage. That kind of discrepancy is the difference between getting dropped and staying in the group. Pretty bummed TBH.
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Sorry to hear that 
. The bike and its components stayed exactly the same when you switched trainers?
[EDIT] Forget it, I just saw the time stamps…
Another question: Are you using oval chainrings?
Yes, I’m using Q-rings.
If I remember correctly, the Vectors do assume a constant angular velocity internally which causes a slight overestimation of power when used with oval chainrings. What if the NEO OG was using the same assumption/technique, but the 2T is using a more sophisticated method to determine cadence/angular velocity? Or, again, the left/right cadence sensor introduced with the 2T is causing problems in this regard.
Impressive numbers nonetheless! 
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