Shimano R9100-P Powermeter

[Delorre]

I received mine yesterday that I pre-ordered on June 22 from bikebling.com. It'll be a few days before I find the time to install it. I need to swap out the BB too.

Weight? What lenght and ring combo?

[charmette1261]

I received mine yesterday that I pre-ordered on June 22 from bikebling.com. It'll be a few days before I find the time to install it. I need to swap out the BB too.

Weight? What lenght and ring combo?

690g my own 53/39 172,5

[Squint]

Looks to be 684 g.

[Delorre]

Thx you both for the weights!!!

[Philbar72]

Yeah, I bet the magnet is to measure cadence. I had the chance to inspect this power meter first hand on the bike of a Sunweb-rider last week, and he had the same magnet. But I can't see why a magnet is a downside.

its not.

Until it comes off, sticks to your chain then rips your Rd off the dropout into your rear wheel.............

that's why I don't use magnets.... a load of clearances on my bike are fairly tight... would rather use the estimated, its never that far away.

[Squint]

I get wild max cadence readings with my Verve Infocrank running in magnet-less mode. L/R balance is also kind of unbelievable.

[charmette1261]

I get wild max cadence readings with my Verve Infocrank running in magnet-less mode. L/R balance is also kind of unbelievable.

for 9100 P ?

[Squint]

for 9100 P ?

No, for the Infocrank.

[Conza]

https://www.bikeradar.com/au/road/gear/ ... iew-51582/

3.5/5

[TobinHatesYou]

https://www.bikeradar.com/au/road/gear/ ... iew-51582/

3.5/5

Not a shock considering it’s price, the fact that it was announced over a year ago and is only now trickling out, no BLE data enabled yet, and (really) a magnet?? I’m sure th next version will be great, but there are great power meters available now from many brands for much less money.

[ms6073]

Got one on the way but that review begs the question, is the preload adjuster tool included with the powermeter?

[moyboy]

ouch... hopefully they can fix some of these issues with a Firmware update. But i agree.... a magnet???

https://www.bikeradar.com/au/road/gear/ ... iew-51582/

3.5/5

[TurboKoo]

Got one on the way but that review begs the question, is the preload adjuster tool included with the powermeter?

Yes it’s included

[ms6073]

ouch... hopefully they can fix some of these issues with a Firmware update. But i agree.... a magnet???

Not sure I understand the problem but then again, I never had any issues with our SRM's requiring magnets for cadence.

Shimano’s R9100-P, on my very first test, tracked within a single watt on average compared to the Vector 3s. And it proved to align so well in further testing with PowerTap and other trusted meters that I used it with the Vectors to test a slew of smart trainers.

But there was a catch — the left/right balance was slightly off; the ride averages were around 55/45 instead of my usual 50/50 to 52/48. Shimano initially blamed firmware. An update did not rectify that.

Why is left/right balance such a show stopper? Polar had this feature when the company introduced the Polar CS600 with Power ~12-years ago and nobody even blinked an eye! Now that we have several pedal based powermeters marketing left/right balance metrics. Now everyone is up in arms about the R9100-P's discrepancies, but aside from proper fit and checking for leg length discrepancies, I have yet to see anyone offer a definitive method for addressing said imbalances.

[ipenguinking]

I've been riding my R9100-P with Garmin 520 for little over 2 months. So far my worst L-R average/ride is 52/48 but mostly 50/50. Since my last powermeter is a SRM so I have nothing to benchmark these L-R numbers. However I've been very proud of pedaling 50/50 most of the time. Perhaps Bike Radar had a defected unit?