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MTB double chain spider based ring power meter
As per the title. Is there such a thing. Feel free to laugh but I’m still riding mtb doubles (and triples on my 26”).
Bit of an experiment but I’d like to fit MTB gears on a bike packing rig with a close ratio cassette. I can see that power2max do SRAM and FSA afterburn MTB double options but im looking to keep a road q-factor. I realise there’s the option of P2M gravel power meter but they only do two chain ring options (48:31 and 46/30). Looking for ability to run slightly smaller chainrings |
#2
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#3
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#4
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In regard to P2M gravel power meters: P2M has two different types of gravel power meters: A spider with a 104mm BCD, to which is mounted a proprietary CNC'ed integrated double chainring (48/31 or 46/30); and a spider with 110mm/80mm BCDs that is compatible for mounting Shimano GRX chainrings. Although Shimano only makes 48/31 and 46/30 GRX chainrings, aftermarket manufacturers such as TA makes GRX compatible chainrings down to 44/28. The P2M GRX spider is only compatible with Rotor Aldhu cranks. Rotor makes two different interchangeable Aldhu spindles - a "wide" spindle which produces a 152mm Q factor and 46 chainline, and "standard" spindle which produces a 147mm Q factor and 43.5mm chainline.
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#5
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I have a new SRAM X01(?) spider with 42/28 rings I've been hoarding. Had plans to mount it to Force22 arms. I guess you'd need a left-arm (Stages?) PM for that setup. I'm not well versed in PMs.
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#6
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#7
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Thanks for the offer but ideally want a spider based meter.
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#8
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Power pedals might be your best bet. Allows you to use whatever drivetrain you want to use.
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#9
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I think I'm reluctant to think about pedal power meters since you're way more likely to smash them into a rock on a MTB but you gotta admit if you really want this the pedal PMs make some sense.
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