Sigeyi Axo Power Meter Spider

[Unniti]

My Sigeyi AXO for Rotor Aldhu arrived earlier this week and I had the time to install it yesterday before taking a spin on the trainer. It was reading a bit low straight after the installation but after ~15 minutes it was very close to the Assiomas I used as comparison. Came with 3.719 firmware and there were no spikes, but that's only after an hour of usage.

[AnkitS]

Yep power spike issue completely gone for me as well.
I actually saw it on pretty much every ride before 3.719 (1300-1800w random jumps) and I haven't seen it pop back up yet, I have a lot more confidence in this pm now other than the stupid chainline issues I mentioned before. No qualms against reccomending it.

The only reason I'd consider a quarq over a sigeyi is that the 165 xx1 arms are exclusively in the 8 bolt pattern.

[davidalone]

Did a first test of my Xcadey Xpower S on Rotor ALdhu 4 bolt 110 today.

Test conditions:
Bike: Bianchi Oltre XR4
Power Meter: XCADEY X Power-S Rotor Aldhu 4 bolt reporting via ANT+ to a Garmin 800
Trainer: Elite Direto Reporting via ANT+ to a Garmin 820
Data uploaded to zwiftpower and compared using the analysis tool.

I cycled for 10 mins on the trainer before running calibration of the Elite Direto on the E-training app . Offset value was 6180 with the orignial at 6184, so pretty much almsot spot on.

I did two rides, one of 10 and approximately one of 5 minutes.
Unfortunately the power data from the 10 minute ride didnt seem to record properly, but the 5 minute one was fine and is attached below. There is one instance of a dropout from the trainer and one instance wheer I put the hammer down but doesnt seem to be matched by the trainer, but I need to investigate this to see if this is just an issue where the trainer has difficulty ramping up the power in short time instances.

From first impressions I am achieving similar results to GPLama where the XCADEY is consistently under reporting power by approximately 4-5%. given that this is comparing spider versus hub based power then tthe difference goes up to close to 6-7% given drivetrain losses.

I will do another test then report back.

[davidalone]

Update:

did a longer ride, this time having the XCADEY report to my Fenix 5 and the Elite Direto report to my Garmin 820.

the Xcadey is defintely under reporting by about 6-7%, see attachement below. Otherwise it does well. the direto does not report cadence very well so it tends to overshoot the sprint power abit.

[Aeo]

Sigeyi AXO 8-bolt for Shimano MTB weights:

Sigeyi AXO spider: 81.5 grams

SM-CRM85 34T: 128.4 grams

• Chainring: 80.8 grams

• Screws: 7.7 grams

• Spider: 39.9 grams

FC-MT900 34T: 83.9 grams
same weight as FC-M9100 chainring


This means if you are coming from a MT900 or XTR M9100 crank with a 34T and install the Sigeyi powermeter:

-83.9 grams
+81.5 grams
+80.8 grams
+7.7 grams
=86,1 grams

Your bike is now 86,1 grams heavier.

[MagicShite]

Did a Ramp Test yesterday on my Sigeyi Axo MTB version (8 bolts)

This are the results. Kickr 4 vs Sigeyi. Both are calibrated before start by warming up at least 10 minutes.

Doubt it means much but in many cases they align 1:1 in my case. I'm confident enough to just use Kickr 4 for my training.

[micky]

How cannot I take seriously someone called MagicShite!
Nah mate, just kidding!
Thanks for the report and sounds pretty good so far.

[jekyll man]

Did a Ramp Test yesterday on my Sigeyi Axo MTB version (8 bolts)

This are the results. Kickr 4 vs Sigeyi. Both are calibrated before start by warming up at least 10 minutes.

Doubt it means much but in many cases they align 1:1 in my case. I'm confident enough to just use Kickr 4 for my training.

Ramp test in erg mode is fairly constant so you would expect(!!) them to be fairly close, although you can get a "push me, pull me" effect if using 2 meters.
Where you will probably notice differences is in fairly variable power situations such as short intervals or zwift racing to close gaps, but results are promising

[MagicShite]

How cannot I take seriously someone called MagicShite!
Nah mate, just kidding!
Thanks for the report and sounds pretty good so far.

It is entirely intentional!

Did a Ramp Test yesterday on my Sigeyi Axo MTB version (8 bolts)

This are the results. Kickr 4 vs Sigeyi. Both are calibrated before start by warming up at least 10 minutes.

Doubt it means much but in many cases they align 1:1 in my case. I'm confident enough to just use Kickr 4 for my training.

Ramp test in erg mode is fairly constant so you would expect(!!) them to be fairly close, although you can get a "push me, pull me" effect if using 2 meters.
Where you will probably notice differences is in fairly variable power situations such as short intervals or zwift racing to close gaps, but results are promising

You are absolutely right. I do find that on some edge cases it sometimes doesn't track very well (at higher shorter power around 30-1 minute) Kickr tends to read a bit higher in this regard.

Sometimes when the temperature settles in and everything falls into place i get 1:1 even when riding around without Ergo Mode. At this point unless I invest in a third power meter I wouldn't be able to exactly pinpoint what went wrong.

[MagicShite]

Here is another normal sample ride that I did earlier.

Bear in mind that this is done on a 11-51T cassette on a kickr 4 + 34T shimano M8100 crankset. I'm not sure if running such a configuration would affect Kickr's reading or not especially at extreme chainlines. (I crashed my road bike earlier and I'm still waiting for a replacement, I'm currently recovering from breaking my femur due to the earlier crash and hence I'm mostly on the MTB)

The peak power seems to dip a bit lower and I could not explain why, otherwise they match pretty 1:1.

[davidalone]

Update - Xcadey Xpower-S scaled up to 110% and with their latest firware looking very good now. My main concern is the work in testing needed to check the power meter- many people wont have the resources to verify the power meter readings.

[robbosmans]

I just received my Suito and will compare it to my xcadey spider

Lets see if I can gain 10W.

[TribesMan]

Suito is not very accurate from my experience, comparing it to my power meter.
It has quite a lot of temperature drift... when its cold it is reading about 10W too low, when it is warmed up it can go 10W too high (@300W).
Keep that in mind.

[raggi]

Update - Xcadey Xpower-S scaled up to 110% and with their latest firware looking very good now. My main concern is the work in testing needed to check the power meter- many people wont have the resources to verify the power meter readings.

Which comparison program is that you're using?

[TobinHatesYou]

Which comparison program is that you're using?

That is ZwiftPower.com