I am wondering if anyone uses the Rotor 2in Power Meter?.
I can’t seem to find many reviews out there.
I am looking for a PM for my gravel bike and they seem to have some options for smaller chaingrings, looking for some real world feedback in general.
Also I have aP2Max on 2 of my road bikes and was wondering if the numbers would match up pretty closely?.
I do. Used it for about 3 years. Has worked well for me, seems to be accurate and remain so. Just a piece of kit that ‘works’ for me.No complaints and wouldn’t hesitate to buy another.
If there was one downside (and i’m clutching at straws here) it’s the 30mm axle, which isn’t ideal for some frames (mine included) which run BB86, but it’s really clutching at straws. It’s been more reliable than mr SRAM Red / Quarq and my old Powertap pedals.
(hoping i haven’t jinxed it now!)
I’m half way there in that I use a Rotor inPower in my gravel bike. It’s been flawless and I too liked the direct mount 2x rings that can get small.
Ian
So were you able to get it to fit on the BB86 frame.
I’m pretty sure that’s what mine is as well.
So were you able to get it to fit on the BB86 frame.
I’m pretty sure that’s what mine is as well.
Yep lots of BB options that work, it’s just not an ideal BB combination (see Hambini for an explanation).
I don’t use it, however had the 4iiii dual sided installed on my GRX crank. Really happy with it.
Maybe an option to consider as well.
I am wondering if anyone uses the Rotor 2in Power Meter?.
I can’t seem to find many reviews out there.
I am looking for a PM for my gravel bike and they seem to have some options for smaller chaingrings, looking for some real world feedback in general.
Also I have aP2Max on 2 of my road bikes and was wondering if the numbers would match up pretty closely?.
The only way the end user could test this is by static slope calibration, say twice a year. Get a ~40 lb weight plate and hang it off of the crank to verify corresponding response in the offset reading. This is akin to verifying your scale reads 20 lb (as opposed to say 18.x or 22.x) when a 20 lb plate is placed on it.
The other thing is to monitor offset drift during the ride. Old Quarqs were notorious for offset drifts ~20 W at 95 rpm when used in wet conditions.
With a steady offset and a steady slope, everything is then effectively synced to the same quantity (the mass of the weight plate).
I really dislike how many (including quite a few the big time reviewers) think that comparing to units to one another is sufficient to determine accuracy, whereas in fact, three readings, none of which is calibrated to a known quantity, can all be off.
And if you are wondering how you can be sure that weight plate (or certified mass if you are feeling spendy) can be trusted, at least the scale at USPS gets its slope calibrated every month (using certified weights).
Have had one for quite a few years (well before covid) and never an issue. As someone else said, my experience has been flawless.
Had one for at least 5 years and it was flawless.
Swapped it between my road and TT bikes…no issues at all.
Then it spent 3 years on my gravel bike…again, no issues at all.
Wouldn’t hesitate to get one again