Go Back  Bike Forums > Bike Forums > Road Cycling
Reload this Page >

Buying a Crankset-Based Power Meter These Days

Notices
Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

Buying a Crankset-Based Power Meter These Days

Old 09-27-20, 01:50 PM
  #1  
Metallifan33
Senior Member
Thread Starter
 
Metallifan33's Avatar
 
Join Date: Dec 2019
Location: Phoenix, AZ
Posts: 243

Bikes: Trek Domane SL 5

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 206 Post(s)
Liked 99 Times in 47 Posts
Buying a Crankset-Based Power Meter These Days

So, for various reasons, I'm in the market for a crankset-based, dual-sided, PM (Shimano compatible). I've looked for
  1. Pioneer - They shut down their op and sold to Shimano earlier this year apparently. ("out of stock. Discontinued")
  2. 4iiii - Every option is "out of stock"
  3. Stages - You guessed it; "out of stock"
  4. Shimano - I've heard there are some issues (from GP Llama specifically).
At this point, I'm thinking I'm just going to have to wait it out, but I thought I'd check here and see if you guys have any ideas.
I'm looking for dual power and Shimano compatible. The bike is a 2020 Domane (with the newer style BB).
Thanks!
Metallifan33 is offline  
Old 09-27-20, 01:57 PM
  #2  
datlas 
Beyond Bogus
 
datlas's Avatar
 
Join Date: Dec 2007
Location: Malvern, PA (20 miles West of Philly)
Posts: 34,665

Bikes: 1986 Alpine (steel road bike), 2009 Ti Habenero, 2013 Specialized Roubaix

Mentioned: 481 Post(s)
Tagged: 2 Thread(s)
Quoted: 14429 Post(s)
Liked 2,809 Times in 1,432 Posts
Several of my friends LOVE their Power2Max crank-based PM.

I am suspecting that the global pandemic is affecting supply chains and making it tough to find much of anything.
__________________
Originally Posted by rjones28 View Post
Addiction is all about class.
datlas is offline  
Old 09-27-20, 02:07 PM
  #3  
Metallifan33
Senior Member
Thread Starter
 
Metallifan33's Avatar
 
Join Date: Dec 2019
Location: Phoenix, AZ
Posts: 243

Bikes: Trek Domane SL 5

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 206 Post(s)
Liked 99 Times in 47 Posts
Originally Posted by datlas View Post
Several of my friends LOVE their Power2Max crank-based PM.

I am suspecting that the global pandemic is affecting supply chains and making it tough to find much of anything.
Thanks datlas ! I'll check 'em out.
Metallifan33 is offline  
Old 09-27-20, 02:13 PM
  #4  
Bah Humbug
runner
 
Bah Humbug's Avatar
 
Join Date: Apr 2009
Location: Austin
Posts: 17,027

Bikes: S1, R2, P2

Mentioned: 115 Post(s)
Tagged: 1 Thread(s)
Quoted: 6535 Post(s)
Liked 1,922 Times in 1,045 Posts
I have a pile (ok, trio) of Quarq DZeros and DFour91s that have been flawless, and apparently available in DUB format through Competitive Cyclist at least. You'd need the spider and arms, and make sure to get a compatible bottom bracket if you go that way, but it's my first choice in PMs.
Bah Humbug is offline  
Old 09-27-20, 05:07 PM
  #5  
Princess_Allez
Senior Member
 
Join Date: Feb 2019
Posts: 328
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 173 Post(s)
Liked 57 Times in 40 Posts
Have you tried Powermetercity.com ? I just bought a Stages gen3 R7k 105 a week ago.
Princess_Allez is offline  
Likes For Princess_Allez:
Old 09-27-20, 05:15 PM
  #6  
WhyFi
Senior Member
 
WhyFi's Avatar
 
Join Date: Jan 2010
Location: TC, MN
Posts: 33,721

Bikes: R3 Disc, Haanjo

Mentioned: 343 Post(s)
Tagged: 1 Thread(s)
Quoted: 16011 Post(s)
Liked 4,761 Times in 2,508 Posts
Power2Max or Quarq. You don't really need dual-sided so much as you want full power (as opposed to the double of one side). P2M (and Quarq, I assume) can give you quasi-dual-sided (it costs a little extra coin for P2M) but I don't see much value in it.
WhyFi is offline  
Likes For WhyFi:
Old 09-27-20, 06:00 PM
  #7  
Seattle Forrest
Senior Member
 
Seattle Forrest's Avatar
 
Join Date: Mar 2010
Location: Seattle, WA
Posts: 21,665
Mentioned: 71 Post(s)
Tagged: 0 Thread(s)
Quoted: 13770 Post(s)
Liked 4,956 Times in 2,801 Posts
I'll third Power2max. Not from personal experience, I went with pedals for reasons that don't apply to you. But I did my homework and P2M was a better choice in several ways that probably do apply to you.

And @WhyFi is right about total power being measured vs dual sided. I'll cosign that advice too.
Seattle Forrest is offline  
Likes For Seattle Forrest:
Old 09-27-20, 06:55 PM
  #8  
Bah Humbug
runner
 
Bah Humbug's Avatar
 
Join Date: Apr 2009
Location: Austin
Posts: 17,027

Bikes: S1, R2, P2

Mentioned: 115 Post(s)
Tagged: 1 Thread(s)
Quoted: 6535 Post(s)
Liked 1,922 Times in 1,045 Posts
Quarq can give pseudo-balance, yes. But also yes, you don't actually care. Unless you're rehabbing a serious injury, it's a non-factor. You do care about total power, and I do think a single spider PM is better than two crankarms for that purpose.
Bah Humbug is offline  
Old 09-28-20, 07:49 AM
  #9  
topflightpro
Senior Member
 
topflightpro's Avatar
 
Join Date: Jul 2007
Posts: 7,266
Mentioned: 54 Post(s)
Tagged: 0 Thread(s)
Quoted: 1725 Post(s)
Liked 479 Times in 311 Posts
Used SRMs are always an option too.
topflightpro is offline  
Old 09-28-20, 08:30 AM
  #10  
kingston 
Jedi Master
 
kingston's Avatar
 
Join Date: Sep 2014
Location: Lake Forest, IL
Posts: 3,403

Bikes: https://stinkston.blogspot.com/p/my-bikes.html

Mentioned: 38 Post(s)
Tagged: 0 Thread(s)
Quoted: 1504 Post(s)
Liked 298 Times in 196 Posts
Is the Easton Cinch any good? I have one, and it seems fine, but I don't really know anything about powermeters.
kingston is offline  
Old 09-28-20, 08:48 AM
  #11  
MoAlpha
• —
 
MoAlpha's Avatar
 
Join Date: Jun 2015
Location: Land of Pleasant Living
Posts: 7,970

Bikes: Shmikes

Mentioned: 48 Post(s)
Tagged: 0 Thread(s)
Quoted: 5900 Post(s)
Liked 2,593 Times in 1,436 Posts
Originally Posted by datlas View Post
Several of my friends LOVE their Power2Max crank-based PM.

I am suspecting that the global pandemic is affecting supply chains and making it tough to find much of anything.
May I be your friend? I love mine too. They are Shimano compatible, multiply configurable (4 and 5 bolt) relatively cheap, and available.
MoAlpha is offline  
Old 09-28-20, 08:55 AM
  #12  
datlas 
Beyond Bogus
 
datlas's Avatar
 
Join Date: Dec 2007
Location: Malvern, PA (20 miles West of Philly)
Posts: 34,665

Bikes: 1986 Alpine (steel road bike), 2009 Ti Habenero, 2013 Specialized Roubaix

Mentioned: 481 Post(s)
Tagged: 2 Thread(s)
Quoted: 14429 Post(s)
Liked 2,809 Times in 1,432 Posts
Originally Posted by MoAlpha View Post
May I be your friend? I love mine too. They are Shimano compatible, multiply configurable (4 and 5 bolt) relatively cheap, and available.
We can still be friends.
__________________
Originally Posted by rjones28 View Post
Addiction is all about class.
datlas is offline  
Old 09-28-20, 08:58 AM
  #13  
Atlas Shrugged
Senior Member
 
Join Date: Mar 2010
Posts: 442
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 245 Post(s)
Liked 243 Times in 135 Posts
Originally Posted by datlas View Post
we can still be friends.
+1 p2m
Atlas Shrugged is offline  
Old 09-28-20, 08:58 AM
  #14  
Atlas Shrugged
Senior Member
 
Join Date: Mar 2010
Posts: 442
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 245 Post(s)
Liked 243 Times in 135 Posts
+1 p2m
Atlas Shrugged is offline  
Old 09-28-20, 09:01 AM
  #15  
himespau 
Senior Member
 
himespau's Avatar
 
Join Date: Jun 2008
Location: Louisville, KY
Posts: 11,705
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 2462 Post(s)
Liked 1,032 Times in 606 Posts
Originally Posted by Seattle Forrest View Post
I'll third Power2max. Not from personal experience, I went with pedals for reasons that don't apply to you. But I did my homework and P2M was a better choice in several ways that probably do apply to you.

And @WhyFi is right about total power being measured vs dual sided. I'll cosign that advice too.
Has anyone come out with powermeter pedals that work with SPD yet? I really like may Campy triple with square taper bottom bracket and no one seems to make crank-based meters that work with that.
himespau is offline  
Old 09-28-20, 09:05 AM
  #16  
rubiksoval
Senior Member
 
Join Date: Nov 2015
Location: Music City, USA
Posts: 4,386

Bikes: Felt AR, Longteng LTK 118 with Chinese carbon everything.

Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 2582 Post(s)
Liked 1,372 Times in 684 Posts
Originally Posted by himespau View Post
Has anyone come out with powermeter pedals that work with SPD yet? I really like may Campy triple with square taper bottom bracket and no one seems to make crank-based meters that work with that.
That's the question. I bet they'd sell a lot if they were priced competitively. I'd probably buy 2 pairs.

Shimano needs to get on that ASAP. Especially since they pretty much ruined any crank-based powermeter used on their 4 arm designs.
rubiksoval is offline  
Likes For rubiksoval:
Old 09-28-20, 09:09 AM
  #17  
datlas 
Beyond Bogus
 
datlas's Avatar
 
Join Date: Dec 2007
Location: Malvern, PA (20 miles West of Philly)
Posts: 34,665

Bikes: 1986 Alpine (steel road bike), 2009 Ti Habenero, 2013 Specialized Roubaix

Mentioned: 481 Post(s)
Tagged: 2 Thread(s)
Quoted: 14429 Post(s)
Liked 2,809 Times in 1,432 Posts
Originally Posted by himespau View Post
Has anyone come out with powermeter pedals that work with SPD yet? I really like may Campy triple with square taper bottom bracket and no one seems to make crank-based meters that work with that.
Apparently there is a hack/bodge you can do with Assiomas to retrofit onto SPD, I imagine there is a YouTube video that shows you how. I don't think anyone has an off-the-shelf version yet though.
__________________
Originally Posted by rjones28 View Post
Addiction is all about class.
datlas is offline  
Old 09-28-20, 09:10 AM
  #18  
kingston 
Jedi Master
 
kingston's Avatar
 
Join Date: Sep 2014
Location: Lake Forest, IL
Posts: 3,403

Bikes: https://stinkston.blogspot.com/p/my-bikes.html

Mentioned: 38 Post(s)
Tagged: 0 Thread(s)
Quoted: 1504 Post(s)
Liked 298 Times in 196 Posts
Originally Posted by himespau View Post
Has anyone come out with powermeter pedals that work with SPD yet? I really like may Campy triple with square taper bottom bracket and no one seems to make crank-based meters that work with that.
The only ones I've seen IRL are the assioma duo xpedo hacks.
kingston is offline  
Old 09-28-20, 09:11 AM
  #19  
himespau 
Senior Member
 
himespau's Avatar
 
Join Date: Jun 2008
Location: Louisville, KY
Posts: 11,705
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 2462 Post(s)
Liked 1,032 Times in 606 Posts
Originally Posted by rubiksoval View Post
That's the question. I bet they'd sell a lot if they were priced competitively. I'd probably buy 2 pairs.
You and me both.
himespau is offline  
Old 09-28-20, 09:25 AM
  #20  
RChung
Senior Member
 
Join Date: Sep 2009
Posts: 1,698
Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Quoted: 430 Post(s)
Liked 337 Times in 129 Posts
Originally Posted by Bah Humbug View Post
Unless you're rehabbing a serious injury, it's a non-factor.
I've never understood how one would use that information even if rehabbing from a serious injury. I've had to rehab from two semi-serious injuries over the years that I've had a (total power measuring) power meter and I'm not sure how that information would have helped. Can you explain? I also have a friend who had to have one leg amputated slightly above the knee. How could he have used specfiic sided information to aid his rehab?

[Edited to add:] Both injuries left me with obvious bilateral asymmetries. One involved sciatica, which weakened my entire right leg and foot. The other involved a bike accident, where I received brain trauma and significant losses on my left side (but, unhappily, also broke my right ankle). I had power data prior to each incident, so I could see a huge loss in my total power (in addition to the obvious difficulty walking up stairs or being able to control my bad leg and foot). In each case, when I was able to get back on the bike, I just worked on returning my total power to where it was, and walking up and down stairs without dragging the bad foot.

Last edited by RChung; 09-28-20 at 09:36 AM.
RChung is offline  
Old 09-28-20, 09:50 AM
  #21  
MoAlpha
• —
 
MoAlpha's Avatar
 
Join Date: Jun 2015
Location: Land of Pleasant Living
Posts: 7,970

Bikes: Shmikes

Mentioned: 48 Post(s)
Tagged: 0 Thread(s)
Quoted: 5900 Post(s)
Liked 2,593 Times in 1,436 Posts
Originally Posted by RChung View Post
I've never understood how one would use that information even if rehabbing from a serious injury. I've had to rehab from two semi-serious injuries over the years that I've had a (total power measuring) power meter and I'm not sure how that information would have helped. Can you explain? I also have a friend who had to have one leg amputated slightly above the knee. How could he have used specfiic sided information to aid his rehab?
This is a good point. Presumably, riders with two legs would set progressive targets for the weak side and monitor progress.

Anecdotally, I’m a neurologist with a research background in neurorehabilitation and partial atrophy of the left quad from an old disc herniation. All I do is force myself to use that leg hard on the bike and in the gym and watch the bulk come slowly back over the years.
MoAlpha is offline  
Old 09-28-20, 10:23 AM
  #22  
datlas 
Beyond Bogus
 
datlas's Avatar
 
Join Date: Dec 2007
Location: Malvern, PA (20 miles West of Philly)
Posts: 34,665

Bikes: 1986 Alpine (steel road bike), 2009 Ti Habenero, 2013 Specialized Roubaix

Mentioned: 481 Post(s)
Tagged: 2 Thread(s)
Quoted: 14429 Post(s)
Liked 2,809 Times in 1,432 Posts
Originally Posted by MoAlpha View Post
This is a good point. Presumably, riders with two legs would set progressive targets for the weak side and monitor progress.

Anecdotally, I’m a neurologist with a research background in neurorehabilitation and partial atrophy of the left quad from an old disc herniation. All I do is force myself to use that leg hard on the bike and in the gym and watch the bulk come slowly back over the years.
Plus, that gives you a handy-dandy excuse for cycling mediocrity. Got one for me??

Back on topic, I agree that the dual sided data is probably not actionable so of very little value other than "knowing" your efficiencies. It won't change anything. I know someone who works for a certain company that rhymes with "ages" and he admits that they sell double-sided meters purely for customer satisfaction, and that single sided are all anyone really needs.
__________________
Originally Posted by rjones28 View Post
Addiction is all about class.
datlas is offline  
Likes For datlas:
Old 09-28-20, 10:39 AM
  #23  
MoAlpha
• —
 
MoAlpha's Avatar
 
Join Date: Jun 2015
Location: Land of Pleasant Living
Posts: 7,970

Bikes: Shmikes

Mentioned: 48 Post(s)
Tagged: 0 Thread(s)
Quoted: 5900 Post(s)
Liked 2,593 Times in 1,436 Posts
Originally Posted by datlas View Post
Plus, that gives you a handy-dandy excuse for cycling mediocrity. Got one for me??.
Haha, Don't forget I'm ten years older than you are too.

How about, your genetics are associated with other, more real-world-fitness-promoting, traits and you'll dance on all of the fast peoples' graves?

Actually, at >7000 mi/yr, you don't need many excuses.

Last edited by MoAlpha; 09-28-20 at 10:42 AM.
MoAlpha is offline  
Old 09-28-20, 11:02 AM
  #24  
himespau 
Senior Member
 
himespau's Avatar
 
Join Date: Jun 2008
Location: Louisville, KY
Posts: 11,705
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 2462 Post(s)
Liked 1,032 Times in 606 Posts
Originally Posted by kingston View Post
The only ones I've seen IRL are the assioma duo xpedo hacks.
That looks like a decent (and relatively affordable) idea. Hadn't see that before, thanks.
himespau is offline  
Old 09-28-20, 11:07 AM
  #25  
Bah Humbug
runner
 
Bah Humbug's Avatar
 
Join Date: Apr 2009
Location: Austin
Posts: 17,027

Bikes: S1, R2, P2

Mentioned: 115 Post(s)
Tagged: 1 Thread(s)
Quoted: 6535 Post(s)
Liked 1,922 Times in 1,045 Posts
Originally Posted by RChung View Post
I've never understood how one would use that information even if rehabbing from a serious injury. I've had to rehab from two semi-serious injuries over the years that I've had a (total power measuring) power meter and I'm not sure how that information would have helped. Can you explain? I also have a friend who had to have one leg amputated slightly above the knee. How could he have used specfiic sided information to aid his rehab?

[Edited to add:] Both injuries left me with obvious bilateral asymmetries. One involved sciatica, which weakened my entire right leg and foot. The other involved a bike accident, where I received brain trauma and significant losses on my left side (but, unhappily, also broke my right ankle). I had power data prior to each incident, so I could see a huge loss in my total power (in addition to the obvious difficulty walking up stairs or being able to control my bad leg and foot). In each case, when I was able to get back on the bike, I just worked on returning my total power to where it was, and walking up and down stairs without dragging the bad foot.
Are you asking what I would do, or are you passive-aggressively setting up the expectation for having a peer-reviewed journal study?
Bah Humbug is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.