Magene P505 PES Base Spider Powermeter

[Hmpf]

I have the P505 S1078 powermeter. So 8 bolt Sram inside and 104 Bcd with 4 arm outside.

I am now looking for suitable chainrings for a triathlon with 52/36. I have not found any suitable ones from Sram.

Do you have any idea which cheap ones I can use or do I need a different crank? I currently have a foce crank with 48/31.

[kubackje]

Can someone post a picture of the new preload screw?

You can find it in the installation manual from magene website

[00Garza]

Also got mine free of charge from geosid store on AliExpress. They just asked me to make a 1$ buy on their store so the shipping will be covered

Damn. Had to pay $30 for mine.

[johnnyboy4711]

get on to you reseller as they shuld refund you.
a known manufacturing defect- you shouldnt have to pay out extra!

[00Garza]

get on to you reseller as they shuld refund you.
a known manufacturing defect- you shouldnt have to pay out extra!

Reseller didn’t have them at the time. Had to go direct to Magene. Not worth the trouble, and I doubt I’ll get any kind of refund.

[00Garza]

In other news…was looking to build up a new frame and move my powermeter over to it, but the frames are T47. Some have made it work, but is there any way to know for sure if it’ll work without having the frame on hand to check?

[raisinberry777]

It probably depends on how flat the transition is from seat tube to bottom bracket area. On the Trek it's basically flat which I suspect is what causes the interference with the frame. On some other T47 frames the BB shell interface kind of pokes out a bit, which gives some extra clearance for the spider.

[KaiDeus]

In other news…was looking to build up a new frame and move my powermeter over to it, but the frames are T47. Some have made it work, but is there any way to know for sure if it’ll work without having the frame on hand to check?

Depends on whether it is internal or external t47 as the magene description says.
24mm Steel Spindle, Compatible with SHIMANO Bottom Bracket
PES P505 Base power meter features 24mm steel spindle, which is also popular spindle on the market. It can provide optimum balance for crankset.
SHIMANO users can install it directly without replacing the bottom bracket.

*The  BB386 bottom bracket is not compatible.
*For T47 frames, only compatible with external bottom brackets

[jonathanf2]

Just checking, is everyone using 12-14nm torque with their Shimano chainrings?

[00Garza]

Depends on whether it is internal or external t47 as the magene description says.
24mm Steel Spindle, Compatible with SHIMANO Bottom Bracket
PES P505 Base power meter features 24mm steel spindle, which is also popular spindle on the market. It can provide optimum balance for crankset.
SHIMANO users can install it directly without replacing the bottom bracket.

*The  BB386 bottom bracket is not compatible.
*For T47 frames, only compatible with external bottom brackets

Problem is most of the newer gravel frames I'm seeing use the wider 86.5mm bb shell which means I'd need internal t47.
So the options are take a chance on a frame that may not be compatible or limit my search to BSA frames.
BXT has some bsa options, but they seem to have mixed reviews.

[SirBikealot]

Just checking, is everyone using 12-14nm torque with their Shimano chainrings?

personally wouldn't recommend it. Tightend my Tiagra Chainrings with 12-13nm and when it came to loosen them one just turned itself without loosing. So on retightening i went down to something around 8nm, which should be enough.