This is a bit of an odd one I think so I’ll cut out as much fluff as I can. So, when on the trainer and I’m riding in the small chainring the RPE drops by one or two levels if I drop into an easier gear on the back whist maintaining the same power output as reported by my trainer’s power meter to T…

My guess would be that the reason you see a difference between the different gears is because of the inertia. If you’re in an easy gear, the trainers flywheel will spin at a lower speed and thus will not even out the fluctuations in power input during a crank rotation. Sort of the same effect you ca…

It could be your Trainer could be inaccurate compared to your pedals by a varying amount depending on the intensity. I went down this rabbit hole trying to figure a similar thing out a few months ago and eventually lost the will to live trying to figure it out and do something about it. One thing …

Thanks for the reply. I’m pretty sure it’s not inertia, it’s at least 2 RPE levels easier when I drop down the gears so I dont think thats the culprit although I wish it were!!

Yea thanks sense. At the end of day I just go one gear harder and evreything lines up power wise so I guess I should just suck it up and accept it’s going to hurt more!

Dude, it’s the same issue huh? Looks like I should switch to power match. Did you redo your ramp test? If so, was there a difference? I’ve only recently switched to the low chain ring so I’m hoping this bad data is limited and I haven’t been training at a false FTP :confused:

@gpl Mate, I saw the post where you replied to @SaSha1103 and looks like I have the same issue. Not sure if you wanted to look any deeper into this but I read in the thread he created it was hard to dig any deeper that due due to only having 1 sidded PM. I have dual sided PM so if the data files a…

i’ve picked the gear that the pm and tacx matched and never switched gears anymore :slight_smile:

Thanks for that. Did you find you needed to retest FTP?

could be a ceiling/floor issue with your trainer. Basically you’re power target is lower than the gearing allows. Although, curious why it would report a different power than you were actually putting out. I would think it would just not go that low.

Odd power data depending on gearing

Equipment

SaSha1103 March 11, 2021, 10:36am 6

Tacx Flux S - Gearing / accuracy - Equipment - TrainerRoad

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Odd power data depending on gearing

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Odd power data depending on gearing

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