Chinertown
Other Resources => Component Deals & Selection => Topic started by: Boybiskit on September 16, 2022, 09:40:41 PM
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I'm looking at spider mounted power meters and I'm interested in hearing other people's experiences and advice with xcadey, sigeyi or others. It will go with:
- Z Race blade 30mm spindle crank with sram direct mount pattern (i know ill need to replace chainring
- Wahoo Element Bolt computer
- Samsung S9 phone on Android 10
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Did you consider the power meters from Magene?
I've installed few of them. The first was more than a year ago, and no problem was reported.
https://a.aliexpress.com/_Ewsvpmb
https://a.aliexpress.com/_EHDNWYj
On my MTB I have a Sigeyi.
But I would probably go with Magene now, they have an excellent service when you contact them through the aliexpress app.
You won't have any compatibility issue with the wahoo.
Not sure about your phone, but probably not either.
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No... but I will now! Thanks for the suggestion
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Sigeyi is the best Chinese power meter brand but don't get the Zrace/Sigeyi crankset, the arms have a design flaw where they rub against the spider eventually wearing through and allowing moisture to seep in. Xcadey power meters are unreliable but their crankset is imo the best constructed. The first batch of the new Magene QED crankset had FD clearance issues and needed to be recalled while their old crankset was a bit flexy.
I wanted to pair the Xcadey arms with a Sigeyi spider at first but the arms have this proprietary 5-bolt pattern (SRAM 3-bolt but with 2 extra bolts), not worth the risk trying to install it anyways so I just dropped the idea.
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I have the xcadey Power-S spider power meter with the zrace RX crank combo since the beginning of the year. Seems to be working ok for me and had a few firmware update along the way. Power numbers seems about right when looking the at numbers compared to the trainer.
Installation was straight forward minus the bolt pattern offset doesn’t seem right, couldn't get the pin on the chanring to be behind the crank arm. Also the offset of the spider vs. The zrace spider is off by 1mm so needed to adjust the front derailleur
But I could recommend using Xcadey from my experience (sample size of 1)
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We have following Chinese power meters in use:
- Magene left Ultegra crank-arm, without issues. Battery life is OK needs to be replaced every 8-10 months.
- Xcadey 105 crank-arm, was too close to the frame and needed some modification to prevent rubbing, needs to be connected manually every ride. Power readings seem to be OK.
- Magene spider power meter on Shimano Ultegra spider failed after 9 month in use, most likely a failed rechargeable battery. Support from Magene could not help and I got no replacement offered.
- 2x Sigeyi spider power meter for Sram Dub crankset, working without issues so far.
After my experiences, I would go with Sigeyi if you want a rechargeable spider power meter.
BR Chris
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Looks like Sigeyi spider is a good place to start then! Thanks for the suggestions.
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I Bought a sigeyi on ebay. It failed after a few months. Contacted sigeyi and the seller. I had to send it back to China (100$CAD), and they sent me a new one. No issues since.
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Hi all
I pushed the trigger on the P505 from Magene.
Not recived yet...will see ...
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After far too much thinking and watching GP Lama reviews, I pulled the trigger on the Xcadey. Let's see how this goes!
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Update: I ordered through Aliexpress rather than Xcadey direct because it worked out a little cheaper. Arrived 3 weeks faster to west coast of Canada than expected. Set up was very easy. One thing to note: unlike speed, power does not show on my Wahoo BOLT until I start a ride or workout.
I've done a road ride and a cyclocross race in the dry and seems to be working fine so far. I have no idea how accurate it is, but will work this out at some point. For now I think it is at least consistent.
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unlike speed, power does not show on my Wahoo BOLT until I start a ride or workout.
Did you try spinning the crank to wake up the power meter? Once I have woken it up, my bike computer (non Wahoo) can see it.
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Gonna add to this list.
Has anyone tried the Power2Max power meter?
I am going to be trying out the ELILEE XXE carbon crankset /power meter combo.
They are out of Sigeyi, XCadey is 15 days out, but they have Power2Max in stock
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Gonna add to this list.
Has anyone tried the Power2Max power meter?
I am going to be trying out the ELILEE XXE carbon crankset /power meter combo.
They are out of Sigeyi, XCadey is 15 days out, but they have Power2Max in stock
P2M is really good. Very stable in my experience.
Don't get Xcadey. They have a disproportionate number of failures for the few PM spiders they manage to sell. Even the batch allocated to Elilee wasn't free from trouble (https://tieba.baidu.com/p/8029782859?pid=145574947964).
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Gonna add to this list.
Has anyone tried the Power2Max power meter?
I am going to be trying out the ELILEE XXE carbon crankset /power meter combo.
They are out of Sigeyi, XCadey is 15 days out, but they have Power2Max in stock
Where are you ordering the ELILEE from?
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...Has anyone tried the Power2Max power meter?...
The NG, on my road bike for 3 years now.
It is very basic. No app. Nothing fancy, just some arcane operations combining a led signal with putting/removing the charging cable a few sec.
The rubber plug of the charging port is a joke, and I lost it after a few rides.
It is as reliable as the Sigeyi and Quarq on my other bikes. They always work.
But I find the p2max quite ugly, compared to the other two 8)
It failed just once. After a flight, it didn't start at my first ride.
And needed to be recharged, although I did recharge it before the trip.
Other trips later didn't have any problem.
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P2M is really good. Very stable in my experience.
Don't get Xcadey. They have a disproportionate number of failures for the few PM spiders they manage to sell. Even the batch allocated to Elilee wasn't free from trouble (https://tieba.baidu.com/p/8029782859?pid=145574947964).
Thanks, as always, for the insight, SW. That is convenient, as it means no waiting
Where are you ordering the ELILEE from?
I am just in communication with them directly. I am picking up a couple things to see if I want to stock it in the shop
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hi guys
I finally received my magene P505 110-3.
I assembled it on my CVR Hardrock cranckset with a set of 52/36 Fonvo Deckas chain ring.
the combo chain ring + powermeter is larger than the original chain ring of the crankset, so i had to adjust the front derailleur top end screw.
but this led to front derailleur to rub against crank arm :(
any idea on how to solve that ?
if i have to change the crank, any suggestion ? what would be the caractéristic to look at ? Q factor ?
thanks for your help
Nicoloc
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So you have gone frome a 50T big ring to a 52T big ring? What do you mean you adjusted the "top end screw"? Did you mean you adjusted the high limit screw?
If so, thats your problem as that doesn't move the derailleur higher, it moves it closer or further away from the frame. It sounds like you need to set up your front derailleur from scratch. I'd reccomend a bike shop because they can be fiddly things and respectfully, it doesn't appear you know what you are doing. Alternatively you could head over to youtube to find a good tutorial.
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The NG, on my road bike for 3 years now.
It is very basic. No app. Nothing fancy, just some arcane operations combining a led signal with putting/removing the charging cable a few sec.
The rubber plug of the charging port is a joke, and I lost it after a few rides.
It is as reliable as the Sigeyi and Quarq on my other bikes. They always work.
But I find the p2max quite ugly, compared to the other two 8)
It failed just once. After a flight, it didn't start at my first ride.
And needed to be recharged, although I did recharge it before the trip.
Other trips later didn't have any problem.
Seems like the only brand more or less with consist positive reviews is the Sigeyi.
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...
but this led to front derailleur to rub against crank arm :(
any idea on how to solve that ? ...
I had this issue with a SRAM etap 1st gen.
The position needed to be very precise to fit.
Try to move it up or down, and tweak the alignement.
Can you try with other rings?
Even old ones just to check?
All Magene PM I installed came with their rings.
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Seems like the only brand more or less with consist positive reviews is the Sigeyi.
Indeed, that is what I also found when searching for a cheap power meter.
cycling100.com has them the cheapest I could find, but the store gets bad reviews, so I did nog order them yet...
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looks like i found the guilty componment : Fonvo ring...
the ring as a design that is not compatible with the Mangene.
I had to grind off some 52 ring rear ribs that were interfeering with the powermeter ring mount (see attachements)
I'll have to check but it lookslike this shaved 2mm and the ring is now spining round.
i'll double check once reassembled on the bike.
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Hi all some feedback on the P505 magene powermeter.
Data provided looks weird to me with lot of variation from one second to another.
i'm comparing the data with my TACX FLux and even if average power seems to be consistent, the variation in values make no sence.
I contacted Magene support and from their prospective (after sharing some compartive fit file) , everything is normal...
so my point is that i cant recommend this power meter and as mention in some other post Magene support was useless.
Nicoloc
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I don't know how powermeters work, but could this not be normal since you only transfer power to the Pedals part of the time? It's not a constant power, but I would expect to see 2 peaks every rotation
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Hi all some feedback on the P505 magene powermeter.
Data provided looks weird to me with lot of variation from one second to another.
i'm comparing the data with my TACX FLux and even if average power seems to be consistent, the variation in values make no sence.
I contacted Magene support and from their prospective (after sharing some compartive fit file) , everything is normal...
so my point is that i cant recommend this power meter and as mention in some other post Magene support was useless.
Nicoloc
Also using the TACX Flux myself, I would say the flatter data from the indoor trainer has to do with how the system works and some of the software even smoothes the power output (3s average)...
Best would be to compare with another e.g. left arm or pedal power meter as reference. I know this might not be possible if this is your only Powermeter device. Can you share any graphic regarding the power meter output?
A good source for Powermeter information is GPLama on Youtube.
He does testing of power meters on a regular basis, you might find information on how to test and which tools he is using.
Here some example: https://youtu.be/EvdHiOY9Ooo
BR Chris
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hi guys,
for those who wants to compare and see what the P505 data looks like. here are two fit files from the same workout in Zwift (ATTAC).
One from the Magene P505 and the other one from the TACX.
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A few months in and the XCadey is proving reliable but power readings didn't seem right based perceived effort with a gym spin bike. So I measured it. Same climb done 3 times back to back. Used elevation, weight and time to calculate estimated power using these formulae:
- Joe Friel / Bible: https://www.trainingbible.com/joesblog/2008/01/climbing-power-formula.html#:~:text=Lim's%20formula%20to%20estimate%20the,for%20rolling%20and%20air%20resistance.
- Broleur: https://www.broleur.com/hill-climb-calculator/
My feelings were right. Xcadey is 12% out. The good news is... it's consistently 11-12% out and I can adjust for it in the app.
Conclusion: 3 months in including wet rides and I'm happy but do your homework to calibrate correctly.
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...My feelings were right. Xcadey is 12% out...
I would contact Xcadey about it anyway.
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Another quick update on this...
1. Xcadey power meter was only 5% out... I forgot I had been fiddling with the settings when I received it assuming it would over read. I messed it up and had forgotten
2. Went for a VERY wet ride last night - puddles up to the BB and axles. Xcadey will working fine this morning.
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Sigeyi is the best Chinese power meter brand but don't get the Zrace/Sigeyi crankset, the arms have a design flaw where they rub against the spider eventually wearing through and allowing moisture to seep in. Xcadey power meters are unreliable but their crankset is imo the best constructed. The first batch of the new Magene QED crankset had FD clearance issues and needed to be recalled while their old crankset was a bit flexy.
I wanted to pair the Xcadey arms with a Sigeyi spider at first but the arms have this proprietary 5-bolt pattern (SRAM 3-bolt but with 2 extra bolts), not worth the risk trying to install it anyways so I just dropped the idea.
I am looking at the Sigeyi power meter for a new build that I'll be doing in the spring. It seems they have what I want - 24mm axle, SRAM 3 bolt connection, 130BCD for running a 1x ring. And it sounds like GPLama had a good experience with them, so that's good too. I do like the looks of the Magene, but I don't want one where I can't choose my own cranks and chainring, so that's out.
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Hi everyone,
I'm looking at upgrading my SRAM Red 22 carbon crankset with a spider based PM. It's the old three bolt pattern interface. As far as I can see, all three - Sigeyi, XCadey and Magene - are offering a PM for this crankset. Also, they're virtually identical electronically, right? So am I right in thinking I can just pick either one depending on price and customer service? Or is one more reliable than the other?
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Hi everyone,
I'm looking at upgrading my SRAM Red 22 carbon crankset with a spider based PM. It's the old three bolt pattern interface. As far as I can see, all three - Sigeyi, XCadey and Magene - are offering a PM for this crankset. Also, they're virtually identical electronically, right? So am I right in thinking I can just pick either one depending on price and customer service? Or is one more reliable than the other?
Where did you read they were kind of identical?
Sigeyi has a better reputation, but their price skyrocketed.
Almost in par with good deals you can get sometimes on Quarq or if you go with a Rotor crankset.
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Where did you read they were kind of identical?
Sigeyi has a better reputation, but their price skyrocketed.
Almost in par with good deals you can get sometimes on Quarq or if you go with a Rotor crankset.
Well at least the first generations of the Sigeyi and the Xcadey had identical housings. I haven’t had a close look in a while but I see that now they have kind of deviated from each other a bit as far as the look goes. Safe to say that the principle is more or less the same with each of them. 4 strain gauges and a PCB. The charger interface is also the same, albeit in a slightly different position. All I’m saying is that any difference in performance between these is likely down to manufacturing quality and QC. Anyway, the price difference is +/- 10% at least where I’m located. So I’ll check out the latest reviews to make a decision, I guess.
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I ordered the Sigeyi 3 bolt 4*104 from Velowear. They sent me the wrong one at first (someone switched the powermeter because it was the boost version in a non-boost box). So I sent it back. Now it seems the Non-boost version is no longer manufactured... So I accepted their offer of sending the Boost version with the non-boost adapter.
It is on its way to me now...
From what I could find the Sigeyi powermeter is the better one of the chinese power meters.
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I have had a Sigeyi Axo PM for last 3yrs, they are very good. It just works, the phone app is a bit crap though.
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I’d go for Sigeyi but they informed me that the one spider version I need has been discontinued. I need a SRAM 3 bolt spider with 110 BCD and hidden bolt. That one has been discontinued. I might give the Magene P505 a try. I like that it gives the option to use 4 bolt and 5 bolt chainrings. I wonder if that affects accuracy though. There seem to be mixed reviews on these. Shane Miller tested the crank based version very well in Dec 22.
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Is it this one included in the set?
Got myself the set but only used the powermeter... ;-)
But this is for BCD110 with five bolts.
https://www.aliexpress.com/item/1005001610258228.html
BR Chris
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No. This is the non-hidden-bolt version. On my Sram crank, the fifth chainring bolt screws directly into the back of the crank arm. Sigeyi informed me that they will probably offer their cheaper AXOcc some time this year for my crank. That could be an interesting option. I wonder though if that plastic battery cover will sit tight enough to a) not fall off during gravel riding and b) stop water ingress.
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I see, there are just too many variations, so one needs to be very careful to order the correct part...
I wonder if this Magene P505 spider power meter may be another option:
https://www.aliexpress.com/item/4001268930419.html
Even cheaper here when getting with Zrace crankset :o
https://www.aliexpress.com/item/1005004025125658.html
Anybody has some experience with the P505?
I personally stay away from Magene PM with integrated battery since I had an issue with the battery failing within one year of use...
But that could have been just bad luck.
BR Chris
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You can use the standard 5 bolt SRAM power meter, you don't have to use the hidden bolt on the crank arm. This is what I did with my Rival GXP crank and Power2Max NGeco power meter. It uses the same 3 bolt spindle interface but moves the fifth bolt 180 degrees/opposite of the crank arm.
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Even cheaper here when getting with Zrace crankset :o
https://www.aliexpress.com/item/1005004025125658.html
That's the P325 crankarm mounted power meter, not the P505 spider meter.
I just picked up a Magene QED P325 crankset, even though it's almost double the price. Personally I much prefer its construction to the Z-RACE.
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Interested to hear your experience with the QED P325...
Sorry my bad, had the wrong link... however including RX crankset it is maybe 25 US$ more expensive.
https://www.aliexpress.com/item/4001268930419.html
https://www.aliexpress.com/item/1005004272116963.html
BR Chris
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I pulled the trigger on the Magene P505 for my Sram 3 bolt crank. I got a very good price and another small discount from Magene. I got a set of Favero Assioma pedals that I can compare the device with. I’ll let you know how it performs.
Shane Millers favourable review is what convinced me in the end.
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Received my Magene P505 the other day. Seems like a quality device. Well packaged. Well manufactured and good quality from the looks of it. Mounting was easy. I put it on my gravel bike with 1x Campagnolo Ekar.
First ride done. Power readings seem a tad on the high side. I’ll have to double check this with my Favero Assiomas. The app has a power scaling feature. So I can adjust if necessary.
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Interested to hear your experience with the QED P325...
Sorry my bad, had the wrong link... however including RX crankset it is maybe 25 US$ more expensive.
https://www.aliexpress.com/item/4001268930419.html
https://www.aliexpress.com/item/1005004272116963.html
BR Chris
Sorry for the late reply. My experience has been mixed. I like the crank and power meter themselves. Very light and stiff. Huge selling point for me was the 167.5mm length option since I run a very forward and hip-closed position. 170mm seemed just a tad long, 165 seemed way too short. 167.5 feels just right, although I'm not a bike fitter so I can't really speak much to if it's actually optimal for me.
What I don't like is the chainring. I get the sense that mine is out of true, making derailleur adjustment VERY sensitive. It doesn't resist bending much either, giving me the impression that it's susceptible to bending from minor side impacts. It uses a mountain-bike shimano direct-mount standard which means there really aren't any replacement options, and Magene doesn't even sell replacements. Fit tolerance is a bit sloppy for my taste, even though the lockring should be providing all the support force. All in all I hope replacements become available in the future, because I'd like to replace them one day.
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Here’s my Magene P505 setup. I’ve done around 200k so far.
I can confirm that the power readings are basically identical with my Favero Assiomas. So I trust the unit. Initial concerns that it was over reading were unfounded. Turns out that gravel riding is just harder than road. :)
Never had a PM on my gravel bike before, so I was surprised.
Only criticism I have to voice is that the fit on the crank spider interface was rather loose compared to the SRAM spider I took off. I hope this won’t cause problems in the long run but so far everything is silent.
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I have been riding with my Sigeyi AXO for a couple of months now and can't say anything bad about them... :)
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I'm looking for a 165mm lightweight crank with power meter, with or without chainring on a budget of $350 USD - it's going to be 40T 1x but I can reuse my current or buy a chainring separately. I'd prefer a spider PM, I think.
I was down to Magene, Sigeyi and Xcadey Xpower. Seems the Sigeyi is out because they don't have stock of 165mm cranks. Then between the Magene and Xcadey, the Xcadey seems to be 100g lighter. So at the moment I'm heading towards the Xcadey. With a lightweight chainring I might be able to get the Xcadey t0 ~600g, that's IF the crankset matches the claimed weight.
Note that I'm only 65kg and can't put out a lot of power (250 FTP). I also have other PMs to calibrate against if I need to test and adjust the power +/-. Mostly riding in dry conditions.
Any thoughts, do you think the Xcadey is a safe lightweight bet?
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Sigeyi is the best Chinese power meter brand but don't get the Zrace/Sigeyi crankset, the arms have a design flaw where they rub against the spider eventually wearing through and allowing moisture to seep in.
Paid for a Magene P505 + crankset from Zrace Official Store in recent summer sale. was told last week could not provide Magene P505 and offered the Sigeyi as a no cost to me replacement. I accepted the offer, hoping the "new" crankset does not have the design flaw and if not I have a couple of other cranksets.
Question is how to check if the new" crankset does not have the design flaw?
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Question is how to check if the new" crankset does not have the design flaw?
Went straight to the source and asked Sigeyi about their PM and Zrace cranks
The Zrace RX crank arm has a large locking interface platform. The two red circle sections will touch with the front cover of the AXO power meter.
It may damage the sealing of the cover after a long-time usage.
(https://nickobec.com/photos/chinertown/sigeyizraace.png)
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Looks like Xcadey is now selling a generation 2 spider (on panda podium and aliexpress) for $250. Anyone try these yet?
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Looks like Xcadey is now selling a generation 2 spider (on panda podium and aliexpress) for $250. Anyone try these yet?
Intersting, do you know what is different with Gen2? The specs look identical.
Funny, I have just ordered an Xcadey crank, not realising a Gen2 was about to drop. Hope I didn't miss out on any significant upgrades to the product.