Keep us posted on how it performs. 
I bought a sigeyi power meter for my gravel bike and itās been great. Iāve thrown that bike on my trainer to compare power against my saris H3 and the sigeyi consistently reads 1.5-2% higher which is perfectly fine with me.
Like you, I wanted a cheaper alternative and wanted power on my gravel bike and gave sigeyi a try. I have a power2max on my road bike that reads ~1% higher than my saris H3 so I feel confident that all of my power sources are well within the range of consistency and reading similarly.
I am glad so many people have used the information on this thread to purchase an effective power meter at a great price. I purchased my power in January 2020 and itās still working reliably. I can still count the number of times I have charged it on one hand and I ride 5-7 hours a week. Hopefully, I will be buying another for my hardtail soon.
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Just ordered a Sigeyi sram MTB PM yesterday. Iām upgrading cranks on my older Trek procaliber from GXP GX1000 to DUB XX1 at the same time, knocking off 300g. So Iāll be swapping BBs at the same time.
Looking forward to having power outside and spending less time on the trainer.
Guys, can someone help a big dummy please (me)
I have a BB30 SRAM Red 110 BCD 50/34 11 speed crank as pictured
Is it this Sram Red 22 BCD 110 one that i need?
Or this Sram 110 BCD one?
Many thanks,
A big dumbo
Iām not sure, but Iād have said none of the above.
I donāt see where the crank can come apart from the spider on your crankset?
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Damn, i think youāre right.
Looks like im limited to pedals or a left sided crank arm.
Whoops
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I recommend Assioma pedals. They are super reliable and have great rechargeable battery life. Not to mention you can take them from bike to bike since pedal thread are the standard that hasnāt changed every 5 years. The only reason I bought a Sigeyi is power meter pedals are a bad idea for mountain biking. I have hit too many rocks with the Assiomas and someday that might break them.
See GPLamaās power meter reviews on YouTube for whatever you are thinking of buying
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that was my exact responseā¦this thing was cheap, pedals arent, and I beat the hell outa my pedals on the mtb. I have no problem rebuilding my SPDs every year or so. Dont really want to open power pedals.
For the price of the sigeyi, ive been totally impressed. Had it almost a year now and other than the initial charge out of the box, ive only recharged it once. I have it calibrated to my wahoo kickr and it seems reliable on the power numbers
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I finally found time to install and test the Sigeyi SRAM MTB AXO vs my Assioma Duos on my mountain bike and take them for a ride.
I tried them on pavement and MTB trails. I calibrated multiple times during my ride in case there was any break-in or settling needed.
The results were quite good. On pavement, pedaling most of the time but varying power a lot, the power meters agreed very close: within 0.3% average power, 1.7% NP but that is mainly due to differences in a few short power spikes.
On the trail, the numbers differ a bit more. However, this was not due to any power offset. Instead this was a short coming of the Assiomas. During my ride I had many short power bursts and short periods (1-3 sec) of not pedaling. Also lots of standing on the pedals and pumping the terrain. Itās the standing and pumping that seems to have thrown off the Assiomas. It shows power when the cadence is zero according to the Sigeyi (which also tracks with what I know I was doing). See pics below.
So, the Sigeyi AXO agrees with the Assioma Duo for steady state power and is more accurate than them for mountain bike use when youāre pumping and standing. Plus itās about half the price and actually meant for mountain biking. Thatās a great product as long as it proves durable.
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I forgot to mention the one problem that I had. When I tried to calibrate via the Sigeyi App it sometimes seemed to silently fail (no confirmation that calibration was successful). Yet when I tried to screen record that, it magically worked, including confirmation that it calibrated successfully.
I didnāt calibrate from my Wahoo. I suspect maybe it was something to do with a bug in the app or maybe another app trying to compete for that Bluetooth data (I did have a few cycling data collection apps open at various times as I was figuring out how to record data from two per meter at once).
Itās also possible to calibrate just by backpedaling, but I couldnāt remember the specific light indicator to verify it was successful and didnāt want to chance a mistake on that.
What devices were you recording with? Different devices (and/or device type) will handle on/off data differently and screw the comparisons.
I recorded the Sigeyi with my Wahoo Elemnt and the Assioma with the Wahoo App on my iPhone. I would expect those two, being from the same company, to handle it the same.
Switch recording devices from the first test and see if it gives the same results.
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Installed my Sigeyi yesterday, also swapped my BB over from GXP to DUB and upgraded from GX1000 cranks to XX1. Took it for a ride this morning and seems to work really well.
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I did exactly that. Recorded the Duos with the Wahoo Elmnt and the AXO with the app. And still the Duos are not recognizing short stops in pedaling, thus registering power when my legs arenāt moving but I am applying force to the pedals. (Note the cadence shown is for the Duos, which often isnāt at zero despite the AXO registering zero and I know that I completely stopped pedaling)
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Hi everyone,
looks like there is a version of the power meter with the cr2032 battery on sale on Sigeyi website. It is called the Axocc.
Does anyone have experience with it? Maybe @GPLama knows?
Especially interested to know if it is the same accuracy, what is the battery life and the durability of the seal (
I plan to put it on a gravel bike).
Thanks!
I didnāt know they had a CR2032 version. Interesting.
I just found this online
The manual is the same, and it is on sale
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@GPLama yo, I think I saw in your MTB vid that youāre using a Drop-Stop A profile chainring on an otherwise shimano 12spd drivetrain. Technically not the correct ring, but it does mostly work. FYI.
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