Campagnolo Power Meters

[claus]

Could we get a weight in here from anyone on the 4 bolt Campagnolo SRM

for 172.5mm 50/34
claimed weight: 780g

on my scale: 549.5 229.4 -> 778.9

Competitive Cyclist: measured 775g

[ParisCarbon]

I've got my new 12 all black SRM in the box.. installing today.. will get a weight.. it's a 175mm with 53*39

[itsacarr]

Thanks Paris

Just tell us what's in that weight haha.

For comparison my Non rechargable SRM Origin with 30mm spindle + Dura Ace rings and both arms s0 complete = 663 grams.

So no bearings or bb's involved there.

Can't recall what the diff between the 24mm spindle and 30mm spindle is however but it's a good chunk.

Since were talking about campy - PFBB in the ballpark of 60 - 80 + or - grams (743 ish total system)

[c60rider]

My P2M NG comes in at 759g

This includes
52/36 rings
172.5mm cranks
Bearings

[ParisCarbon]

So the driveside SRM with the cult bearing on there,175mm arm and 53*39 is 555g... The NDS arm weighs 227g with bearing so 782 total... On a sidenote my new look Keo ceramic ti pedals weigh 96g each

[itsacarr]

And now .. we know

[Yoln]

So the driveside SRM with the cult bearing on there,175mm arm and 53*39 is 555g... The NDS arm weighs 227g with bearing so 782 total... On a sidenote my new look Keo ceramic ti pedals weigh 96g each

Wait, which bearing are we talking about here? BB?

[itsacarr]

The Campagnolo bearings that are pressed onto the crank arms.

[blaugrana]

This might seem like a very silly question, but it would make upgrading to 12 speed quite a lot cheaper: Would a 2015 11s Record left crank arm (with Stages PM) be compatible with a 12s Chorus or Record crankset? They are both Ultra Torque, but is the joint exactly the same size?

[Mockenrue]

I don't believe so. Yes the joint is the same size but with the new stuff the bolt goes in the non-drive side.

[c60rider]

I thought the hirth joint had also been designed with a small notch that was slightly different to prevent the cranks from being lined up incorrectly but not been able to find that with a quick search.

[c60rider]

viewtopic.php?t=144340&start=150#p1388202

Just found it don't know if it applies to all cranks

[Mockenrue]

Ah yes good point, I'd forgotten that.

[Radiokopf]

What are your thoughts on this option?

https://avio.co.uk/products/powersense- ... it-service

It works with Campa 5-arm and the price seems to be attractive...


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[MayhemSWE]

What are your thoughts on this option?

https://avio.co.uk/products/powersense- ... it-service

It works with Campa 5-arm and the price seems to be attractive...

I see no mention whatsoever about compatibility with Campy crank arms anywhere on their website?