Shimano R9100-P Powermeter

Discuss light weight issues concerning road bikes & parts.
Squint
Posts: 237
Joined: Mon Oct 10, 2005 9:23 pm

by Squint

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Looks to be 684 g.

Delorre
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Joined: Sat May 24, 2014 12:09 pm

by Delorre

Thx you both for the weights!!!

by Weenie


Philbar72
Posts: 137
Joined: Tue Sep 17, 2013 9:47 am

by Philbar72

goodboyr wrote:
Fri Jul 07, 2017 8:51 pm
Philbar72 wrote:
rasmusic wrote: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
Posts: 237
Joined: Mon Oct 10, 2005 9:23 pm

by Squint

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

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charmette1261
Posts: 23
Joined: Tue Jan 02, 2007 11:36 am
Location: France

by charmette1261

Squint wrote:
Mon Jan 15, 2018 3:22 pm
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
Posts: 237
Joined: Mon Oct 10, 2005 9:23 pm

by Squint

charmette1261 wrote:
Mon Jan 15, 2018 6:23 pm
for 9100 P ?
No, for the Infocrank.

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Conza
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Location: Melbourne, Victoria, Australia
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by Conza

It's all about the adventure :o .

TobinHatesYou
Posts: 605
Joined: Mon Jul 24, 2017 12:02 pm

by TobinHatesYou

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.

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ms6073
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Joined: Fri Jul 23, 2004 8:24 pm
Location: Houston, Texas

by ms6073

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

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Michael - The Anaerobic Threshold is neither...

moyboy
Posts: 78
Joined: Thu Aug 18, 2016 12:19 am

by moyboy

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

TurboKoo
Posts: 397
Joined: Wed Oct 29, 2008 7:55 pm

by TurboKoo

ms6073 wrote:Got one on the way but that review begs the question, is the preload adjuster tool included with the powermeter?

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Yes it’s included
Scott Foil
Shimano 9150
Shimano FCR-9100-P
Shimano C60 tubulars

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ms6073
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Joined: Fri Jul 23, 2004 8:24 pm
Location: Houston, Texas

by ms6073

moyboy wrote:
Tue Jan 23, 2018 2:44 pm
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.
Michael - The Anaerobic Threshold is neither...

ipenguinking
Posts: 466
Joined: Sun Jan 09, 2005 5:14 pm
Location: Sunny So Cal

by 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?

BdaGhisallo
Posts: 1796
Joined: Wed Mar 17, 2004 1:38 pm

by BdaGhisallo

After reading the BikeRadar review, I am very interested to hear what DCRainmaker has to say about the unit. I know that he has a unit he is currently testing. Let's hope it's not too long before he posts his thoughts.

by Weenie


mds
Posts: 192
Joined: Sat Dec 13, 2008 6:28 pm
Location: California

by mds

In zone 4 and 5 with the R9100-P my power balance is about 51/49 +/- 1%. In lower zones 1 to 3 it is more out of balance at about 54/46 +/- 2%. I understand that this sort of zone variation is typical. My prior powermeter was also an SRM so I can't compare, but I have compared the R9100-P total to my Tax Neo Smart. IMO my R9100-P is likely operating within its specifications.
2009 Look 595

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