Magene P505 PES Base Spider Powermeter

[acino]

I can confirm that combo PassQuest + PES P505 + Ultegra 12spd + T47A works and shifts well

[SillyMochi]

Which frame is this? It's not the BB itself that prevents the working installation of a Magene spider, it's the way the structure around the BB is formed by some frame manufacturers that might inhibit free movement.

[acino]

Yes, but there was recently some confusion if passquest + p505 works with 12 spd shimano.

[Lero970]

Yes, but there was recently some confusion if passquest + p505 works with 12 spd shimano.

Good to know. I am using a ZTTO Threaded BB 86 and thought that maybe it would be too wide because of the Tool Interface on each side. But it does not look wider and I tried it on a bike with a normal bb86 Shimano bearing as well. I am currently thinking about ordering it from a different seller again because I can not think about another reason why it shouldn't work on my bikes.

[SillyMochi]

Must have missed that. Never knew that was in question. Been using a PassQuest Aero 50/34 + Magene PES P505 Base combo since almost a year now without any issues - on a BB86 that is.

T47 with some frames gives you issues though (nothing new either), that's why I was interested in which frame you are using. You conveniently still left this info out

[jonathanf2]

Must have missed that. Never knew that was in question. Been using a PassQuest Aero 50/34 + Magene PES P505 Base combo since almost a year now without any issues - on a BB86 that is.

T47 with some frames gives you issues though (nothing new either), that's why I was interested in which frame you are using. You conveniently still left this info out

My Ceccotti RF25 / SPCycle G056  frameset with T47 seems to work well with cranksets supposedly only for threaded BSA. The same cranks on my BB86 frame don't work. I have a feeling the Magene PES would work on that frame.

[Lero970]

Must have missed that. Never knew that was in question. Been using a PassQuest Aero 50/34 + Magene PES P505 Base combo since almost a year now without any issues - on a BB86 that is.

T47 with some frames gives you issues though (nothing new either), that's why I was interested in which frame you are using. You conveniently still left this info out

I am sorry. I was trying it on a Airwolf YFR 066 and on my Rose Reveal 06 both with BB86. I am thinking about ordering a Tantan Frame with T47 soon. So maybe I am able to try it on another Frame.

[fhill]

I can add that the P505 PES did work with a T47 from SPcycle (G069). My Power2Max didn't.

[SirBikealot]

I can add that the P505 PES did work with a T47 from SPcycle (G069). My Power2Max didn't.

Thank for the info. As i'm really into the G068 it's nice to know, that i can swap my 505 onto it.

[Lero970]

I did buy the cheapest chainrings on AliExpress right now. The zrace chainrings were like 17 dollar and I wanted to test if really my setup in general is the problem or the pass quest chainrings.  Weired thing was that the small chainring did not have enough space to clear the chainstay when used with the original Shimano crank.

But after fitting the zrace chainrings with my Magene powermeter it just works like a charm. Seems to even shift a tad better than Magene with Shimano chainrings.

Attached you can find a picture of the pass quest and the zrace chainring from the backside. My guess was that maybe those silver bits which guide the chain to the big ring when shifting up are missing or not pronounced enough on the pass quest chainring. But I am not entirely sure about that. I will order another set and try it again because they look so much better.

[Greenred]

Has anyone tested the pes p505 with a 48-33t or 46-32t chainring combo or understands whether that would work?
E.g. by stone: https://de.aliexpress.com/item/1005006848072861.html or praxis works https://www.bike24.com/p2674816.html

I want to reduce my 50-34T to for long steep mountain rides...

[Tilmanstoa5ty]

Has anyone tested the pes p505 with a 48-33t or 46-32t chainring combo or understands whether that would work?
E.g. by stone: https://de.aliexpress.com/item/1005006848072861.html or praxis works https://www.bike24.com/p2674816.html

I want to reduce my 50-34T to for long steep mountain rides...

Haven't tested it myself but i am pretty sure it would work as long as it's 110 BCD.

[SillyMochi]

Agree with Tilman. As long as they are 110 BCD which the above links are, I don't see a reason why it shouldn't.

[JImportante]

Just ordered Magene P505 for $222 ♥️

[dbeezie]

I installed the PES P505 that I recently purchased from Magene's AliExpress webstore.  In comparing the fit files between my Assioma's and Magene power meters, Compare the Watts showed that the power output was within a watt or two of each other overall and at multiple sample spots. 

I re-installed my Rotor 52/36 chain rings and not the Magene chain rings and the shifting is incredibly smooth.  It was a nice bonus that I didn't need to re-index either derailleur after swapping out the Rotor Aldhu crank arms too.