Magene P515 PES Spider Powermeter

[Dennis]

Do you really need to calibrate it before every ride?

[GSoroos]

I detected one flaw : when the Magene is bluetooth connected to my Coros Pace 2 and my Wahoo Bolt v2, I had short disconnections all the time. But pairing it with the Coros with Ant+ solved the issue totally.

I notice that with cadence and the bluetooth connection to MyWhoosh. But the Ant connection is fine. And since it's cadence and only really drops by a little every minute it doesn't affect much.

[GSoroos]

Do you really need to calibrate it before every ride?

I think supposedly, if you want totally accurate data you should. I don't. But most outdoor rides I do. If I'm riding indoors I do maybe once a week. Temperature is more consistent indoor. Some outdoor rides I backpedal 5-10 times to reset as well. Especially if the temp fluctuates like morning rides.

[Nopileus]

I normally just do the backpedal a bit into the ride when temperatures have normalized somwhat, though i probably forget on as many rides as i do it.

In other news at some point the Magene app got an update and ever since it's been refusing to connect to the meter even though it's still paired.
Either they broke the app or they locked out china specific SKUs (got this from a cheap aliexpress seller so i might be).

[triglav]

My setup seems like it's wobbling left and right a bit too much as me nor my LBS can't get the FD to not rub on right pedal downstroke. My original Shimano chainrings had a similar issue but more pronounced, so I thought it was an issue with the chainrings. Changed the chainrings to Stone off Ali. Seems like it could be a spider issue?
Anyone had similar issues?

[frenzen]

My setup seems like it's wobbling left and right a bit too much as me nor my LBS can't get the FD to not rub on right pedal downstroke. My original Shimano chainrings had a similar issue but more pronounced, so I thought it was an issue with the chainrings. Changed the chainrings to Stone off Ali. Seems like it could be a spider issue?
Anyone had similar issues?

It is more likely the spindle issue not the spider itself. Ideally you put another spider and confirm.

[flix]

I normally just do the backpedal a bit into the ride when temperatures have normalized somwhat, though i probably forget on as many rides as i do it.

In other news at some point the Magene app got an update and ever since it's been refusing to connect to the meter even though it's still paired.
Either they broke the app or they locked out china specific SKUs (got this from a cheap aliexpress seller so i might be).

I had the same issue with the app not connecting anymore.
Turns out, the model I bought was the chinese version (even though I purchased from the EU store).
I was able to connect to the powermeter again using the chinese version of the Magene Utility app.

[Ludo]

Did you guys got any soacers with your crankset?

[ediryppah]

Just got a gravel bike with 1x GRX.

I have read that some use the P515/P505 and it works, but can someone explain to me what I need to know to make it work and what the consequences are?

Off the top of my head, I need to buy the PM crankset without chainrings and then get some special chainring that adjusts the chainline?
Can I achieve the same chainline position as stock GRX? If not, what's the difference?

If I currently have room for 48T chainring, is there a way to approximate what chainring size will fit? I'm OK with maxing out on 46T but 44T is a little limiting for certain conditions (keeping up with the fast riders with 2x systems on asphalt sections).

Also I guess Q-factor will be affected, but I can live with that if I go long axle pedals/MTB pedals and a couple washers.

[noobgainz]

I was thinking of trying the PES 515 with 165mm cranks.   I normally run 170mm.   If I end up not liking the 165mm, can I replace the crankset with another brand back to 170mm?   Any recommendation for replacement crank arms/spindle?

[toxin]

You can message magene and buy just the cranks separately, but you can't really use another brand's cranks

[amacal1]

I was thinking of trying the PES 515 with 165mm cranks.   I normally run 170mm.   If I end up not liking the 165mm, can I replace the crankset with another brand back to 170mm?   Any recommendation for replacement crank arms/spindle?

I ended up buying with 167.5mm cranks. I normally run 170mm on every bike I've ever had. I've wondered if I'd like smaller cranks (and I suspect I might), but this way I figure I can't be too far off the mark if I'm wrong.

I just got my PES 515 the other day and I'm waiting on my frame. This is my first crank power meter, as I had pedal power meter before.

[Willos]

How can I achieve a 2x SRAM flattop compatible setup? I am curious what chainring I could pair with it so that it's compatible. Big bonus if they can be aero.

Thanks

[Stubbie Blue]

How can I achieve a 2x SRAM flattop compatible setup? I am curious what chainring I could pair with it so that it's compatible. Big bonus if they can be aero.

Thanks

Look for AXS compatible and 110 BCD 4 bolt.
Pass Quest: https://www.aliexpress.us/item/3256806585752119.html
Stone: https://www.aliexpress.us/item/3256807909803154.html

[Asco]

My setup seems like it's wobbling left and right a bit too much as me nor my LBS can't get the FD to not rub on right pedal downstroke. My original Shimano chainrings had a similar issue but more pronounced, so I thought it was an issue with the chainrings. Changed the chainrings to Stone off Ali. Seems like it could be a spider issue?
Anyone had similar issues?

I have this on my 505. Tested multiple chainrings and it's the spider itself that's out of alignment. Try to put the big chainring in place on the spider without the bolts, and see if lays flat on the spider. With mine there's always a slight gap somewhere.
I've since gone 1x so this is not a big deal for me now but I always thought mine got bent due to a crash or something. Guess it was like that from the factory.