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power meter recommendation
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Having gotten interested in improving my power numbers on Zwift, I am thinking I'd like to get a basic power meter for my road bike on which I do most my riding outdoors. Since there are no races for awhile I figured this would be another way to race myself. I ride a Canyon Endurance SL road bike with 165 ultegra cranks. My needs are pretty basic:

-Simple low hassle, low maintenance, high durability is a number one priority (To give context, I am the sort of don't fix what ain't broke guy who avoided disc brakes until very recently and still does not have electronic shifting).
-Want dual sided power because I have a long standing hip imbalance that I'd like to see if having dual data would help me improve this problem.
-Needs to be able to work in the wet as it rains alot here.
-Given the above considerations, as affordable as possible. I do not need higher end bells and whistles and the costs that comes with such things.

Also, I currently have an older garmin head unit and don't think it will read power so I will need a new head unit to go with whatever power meter I get. Again, don't need a ton of metrics here, just something simple and durable that can show power, time, speed, cadence, distance, average speed and average power. All the better if I can program routes in it.

In reading various reviews the Favero Assioma pedals and the Stages and 4iiii LR crankarms look pretty good and pretty simple but I am new to this and wide open to any other recommendations for an affordable and trustworthy power meter head unit combo.

Thanks in advance for any suggestions.
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Re: power meter recommendation [jsmith] [ In reply to ]
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Iā€™ve had three Power2Max power meters - only ā€˜issueā€™ is that I have to replace batteries every 3-4K miles of use. In other words, they are super reliable. There is an FSA crank version that I have on my road bike and is pretty reasonably priced - youā€™d have to check bottom bracket compatibility.

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Re: power meter recommendation [jsmith] [ In reply to ]
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It tough to go wrong with the Assioma Duo pedals. Those are one of the few products that few people say anything negative about. They just work and the price is fantastic.

There is a recent emergence of questionable performance from crank arm-based PMs that use Shimano cranks. So, that is one thing to put in the back of your mind.

The crank-based PMs are very good and provide accurate total power. But, they only have estimates for L/R power.

If you want true L/R power, then get the Assiomas. If L/R estimates are good enough, then add the crank power meters to the list.
Last edited by: exxxviii: May 1, 20 6:10
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Re: power meter recommendation [jsmith] [ In reply to ]
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I have had Quarqs for a while. Incredibly reliable for me. Personally I wouldnā€™t by another brand. I have heard good things about Power2Max. I would stay away from pedal based systems only because of the history of there reliability. If you happen to crash or drop your bike etc. your pedals are the first thing to hit the ground. That scares me. Spend the $$$ to get something good.
Last edited by: TheWhiteCarrot: May 1, 20 6:19
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Re: power meter recommendation [jsmith] [ In reply to ]
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Another vote for Assioma Duo pedals from here. Reliable, accurate and easy to charge.
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Re: power meter recommendation [jsmith] [ In reply to ]
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Itā€™s a couple years old but still pretty relevant. DC Rainmaker does a great job breaking down each style of power meter and then breaking down each brand and model.

https://www.dcrainmaker.com/...ter-buyers-2018.html

Personally, I use Quarq and really wonā€™t use anything else. Iā€™ve had Stages in the past and the power readings dropped off occasionally and Iā€™ve had friends with Garmin and Powertap pedals that just ended up being a PITA for them. The swap-ability seemed great but the power wasnā€™t useable for them. With Powertap, Quarq replaced it with a full DZero crank so that was pretty awesome customer service.

Good luck in your decision!

Brett Z

ā€œLivinā€™ in a van down by the riverā€
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Re: power meter recommendation [claude_] [ In reply to ]
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claude_ wrote:
Another vote for Assioma Duo pedals from here. Reliable, accurate and easy to charge.

Third vote for the Assiomas. Solid choice.

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Re: power meter recommendation [jsmith] [ In reply to ]
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jsmith wrote:
-Want dual sided power because I have a long standing hip imbalance that I'd like to see if having dual data would help me improve this problem.
I've never been sure how to use L/R readings to improve my overall performance. I just use overall power to improve my overall performance.
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Re: power meter recommendation [natethomas] [ In reply to ]
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Another vote from P2M if you want to use speed play pedals (which I did)....Otherwise look at the other recs on the Assioma
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Re: power meter recommendation [jsmith] [ In reply to ]
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Another vote for Assiomas. I have Quarqs and they are great, but after moving to these, Iā€™m sorry I didnā€™t switch sooner. Especially awesome if you have multiple bikes.

Human Person
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Re: power meter recommendation [jsmith] [ In reply to ]
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I've currently got a quarq and a power2max type s. Both work fine with no issues so far except battery changes have had an an SRM and stages (left side only) briefly but they worked fine also.

I would recommend for your case looks for power meters that are compatible with a Shimano bottom bracket (24mm spindle). Or go pedal based. Because if you get something else you potentially would have to change out your bottom bracket too or or use shims/adapters (like Quarq with a GXP axle). Most of the offerings out there are pretty good but there are exceptions. Also, depending on what you get you might need new chainrings too... something else to think about.
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Re: power meter recommendation [jsmith] [ In reply to ]
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Assioma. Very happy customer. I've used it in torrential rain and it's been on the roof of my car in torrential rain during highway travel. Works as perfectly as the day I unboxed it. Easy to swap between bikes, easy to charge, and it just works. the most satisfying gear purchase I've made in 10 years of tri.
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Re: power meter recommendation [jsmith] [ In reply to ]
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although no double sided metrics, the cheapest way to get power on the road is probably picking up an old powertap rear wheel. i used one years ago and it was solid. gave it away when the kids were born and i was out of tris/cycling. for $200-300 on ebay/classifieds, you'll get reliable power and a wheel to thrash/train on.

but yeah, if your budget's a little higher, the "just works" assiomas seem to be the ticket. easily to install/swap to other bikes, no batteries/battery covers to shake loose/break, consistent/reliable data, you can tweak the power reading to square up with your smart trainer via the app, etc. a bit of pain to switch my spd-sl cleats to the assioma/look cleats, but it's a one time 10-15min +/- an adjustment or 2.

i just bought a set from a STer here. can't wait to pair them up with the "just works" wahoo bolt when they arrive next week :-)
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Re: power meter recommendation [PBT_2009] [ In reply to ]
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If he doesn't get Assioma's he's just wasting money. There is simply no reason to not get them. They are fairly cheap, extremely reliable and I've heard nary a bad word about them.

Oh by the way, mine survived doing the gravel pedal hack/conversion and the epic mud and rain of Mid South (LandRun) this year and are still working perfectly.

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Re: power meter recommendation [logella] [ In reply to ]
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logella wrote:
IThere is simply no reason to not get them.

I agree that these pedals are probably great and a fantastic option. But, but you are stuck with them as a pedal system....,so there is actually at least one very good reason to consider something else, and that is the option to use a different pedal system. I switched to P2M/speed play combo (from power tap pedals which worked flawlessly for me, not as much for others). And Iā€™m really happy with that combo. P2M is a set-and-forget product and speedplay pedals are awesome.
Last edited by: DFW_Tri: May 1, 20 14:13
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Re: power meter recommendation [jsmith] [ In reply to ]
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I have 2 second generation Power2max power meters and 2 ngeco power meters.

They just work.

What bike you have may dictate which BB standard you choose. I have a FSA MegaExo (24mm), Rotor 3D+ (like a BB386), FSA BB386 and a Cannondale BB30 (Mountain bike)

If I was getting another I'd get the BB386 since I likely will never buy a Trek.
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Re: power meter recommendation [jsmith] [ In reply to ]
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I am currently using a 4iii dual which has been great. I came from multiple SRMs and Power2Max over the years and have been happy with my choice. Power numbers were consistent with my SRM. My shop recommended 4iii and for the price it was a simple choice. With the reduction in cost makes it even more attractive. My GRX cranks are with them now for a dual sided install.
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Re: power meter recommendation [jsmith] [ In reply to ]
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I have Quarq road bike and could not be happier for last 2+ years.
On my gravel bike i bough the new stages since crank has GRX. It was only $350 and has worked for last 3 months with no problems so i have been happy so far
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Re: power meter recommendation [jsmith] [ In reply to ]
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The only issue that I know of with the Assiomas is that they aren't shipping right now, and everywhere I've looked online does not have them in stock.

I'm seriously considering the Garmin Vector3 as an alternative. I believe that the issues with the early releases have been resolved and they should be fine. (benefits of being a late adopter).

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Re: power meter recommendation [JasoninHalifax] [ In reply to ]
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Quote:
The only issue that I know of with the Assiomas is that they aren't shipping right now, and everywhere I've looked online does not have them in stock.

YEah, that's a problem. They're in Northern Italy, I think, and have been impacted quite hard recently.
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Re: power meter recommendation [JasoninHalifax] [ In reply to ]
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Advise to avoid the Vectors in any model. I had the 3s and they were fine until a battery change like many others have reported. Just junk after that. They are now sending their 3rd set of battery door replacements to owners.

Human Person
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Re: power meter recommendation [trismitty] [ In reply to ]
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My Vector 3's have been fine after a battery change.
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Re: power meter recommendation [jaretj] [ In reply to ]
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Thatā€™s awesome, but itā€™s definitely an issue with these pedals.

Human Person
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Re: power meter recommendation [trismitty] [ In reply to ]
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trismitty wrote:
Thatā€™s awesome, but itā€™s definitely an issue with these pedals.

How old are they?

Iā€™m also considering a PowerTap hub. I really donā€™t want a crank based pm at this point (mostly aesthetic reasons, not performance related)

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Last edited by: JasoninHalifax: May 1, 20 11:54
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Re: power meter recommendation [JasoninHalifax] [ In reply to ]
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I bought my vectors in September then returned them in December. They were the newest version. Hubs are great, but youā€™re locked into one wheelset. I have a power tap g3 in a set of Reynolds attacks and it just doesnā€™t get as much use now that I have the Favero pedals. I really think if you can handle Look cleats that pedals are the best option.

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Re: power meter recommendation [] [ In reply to ]
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My problem with the Assioma's is simply the look. just so ugly!

the world's still turning? >>>>>>> the world's still turning
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Re: power meter recommendation [trismitty] [ In reply to ]
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trismitty wrote:
I bought my vectors in September then returned them in December. They were the newest version. Hubs are great, but youā€™re locked into one wheelset. I have a power tap g3 in a set of Reynolds attacks and it just doesnā€™t get as much use now that I have the Favero pedals. I really think if you can handle Look cleats that pedals are the best option.

Fortunately Iā€™m in no rush, really. I likely wonā€™t get anything before Christmas, this year Iā€™m happy to just ride and do zwift with zpower.

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Re: power meter recommendation [Callin'] [ In reply to ]
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Ditto... I almost did not buy the Assiomas because of the looks. I am so glad I did not make that mistake. They are freakin' awesome.

"If you want to be happy for the rest of your life, never make a pretty woman your wife..."
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Re: power meter recommendation [jksu2000] [ In reply to ]
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jksu2000 wrote:
although no double sided metrics, the cheapest way to get power on the road is probably picking up an old powertap rear wheel. i used one years ago and it was solid. gave it away when the kids were born and i was out of tris/cycling. for $200-300 on ebay/classifieds, you'll get reliable power and a wheel to thrash/train on.

but yeah, if your budget's a little higher, the "just works" assiomas seem to be the ticket. easily to install/swap to other bikes, no batteries/battery covers to shake loose/break, consistent/reliable data, you can tweak the power reading to square up with your smart trainer via the app, etc. a bit of pain to switch my spd-sl cleats to the assioma/look cleats, but it's a one time 10-15min +/- an adjustment or 2.

i just bought a set from a STer here. can't wait to pair them up with the "just works" wahoo bolt when they arrive next week :-)

Had did you find the change to Look cleats ?

Are they very different to Shimano SPD-SLs ?
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Re: power meter recommendation [JasoninHalifax] [ In reply to ]
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JasoninHalifax wrote:
trismitty wrote:
Thatā€™s awesome, but itā€™s definitely an issue with these pedals.


How old are they?

Iā€™m also considering a PowerTap hub. I really donā€™t want a crank based pm at this point (mostly aesthetic reasons, not performance related)

I would caution that once you have a hub, you only get power from that wheel. Which means that when you get cool race droolworthy wheels, no power.
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Re: power meter recommendation [lightheir] [ In reply to ]
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lightheir wrote:
JasoninHalifax wrote:
trismitty wrote:
Thatā€™s awesome, but itā€™s definitely an issue with these pedals.


How old are they?

Iā€™m also considering a PowerTap hub. I really donā€™t want a crank based pm at this point (mostly aesthetic reasons, not performance related)

I would caution that once you have a hub, you only get power from that wheel. Which means that when you get cool race droolworthy wheels, no power.

Really? It only works on one wheel? I never thought of that...

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Re: power meter recommendation [JasoninHalifax] [ In reply to ]
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Hub is laced into one wheel....what the aesthetic disapproval of P2M....I actually think they make cranks look better as they fill in the typical holes in most cranksets
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Re: power meter recommendation [TOTRI] [ In reply to ]
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How did you find the accuracy between the SRM and Power 2 Max? And if different which tended to read higher?. I am now using a power 2 max and like it but curious if you found them consistent in terms of watts.
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Re: power meter recommendation [DFW_Tri] [ In reply to ]
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DFW_Tri wrote:
Hub is laced into one wheel....what the aesthetic disapproval of P2M....I actually think they make cranks look better as they fill in the typical holes in most cranksets

I have campagnolo record and chorus cranks (aluminum) mounted to a square taper BB, all on a lugged steel Serotta. A crank based PM would look completely out of place.

Those campy cranks are arguably the prettiest cranks ever made.

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Re: power meter recommendation [JasoninHalifax] [ In reply to ]
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JasoninHalifax wrote:
lightheir wrote:
JasoninHalifax wrote:
trismitty wrote:
Thatā€™s awesome, but itā€™s definitely an issue with these pedals.


How old are they?

Iā€™m also considering a PowerTap hub. I really donā€™t want a crank based pm at this point (mostly aesthetic reasons, not performance related)

I would caution that once you have a hub, you only get power from that wheel. Which means that when you get cool race droolworthy wheels, no power.

Really? It only works on one wheel? I never thought of that...

Youll be surprised at how much you will want to to have power with wheel upgrades, believe me
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Re: power meter recommendation [lightheir] [ In reply to ]
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What makes you think this would be my only wheel ever?

Itā€™s not that hard to get a PowerTap hub with an aero rim.

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Re: power meter recommendation [Canuck1] [ In reply to ]
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It was close but read consistently about 5w lower than the other 2.
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Re: power meter recommendation [TOTRI] [ In reply to ]
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Thanks. To be clear you found the P2M the one that read a bit lower ?
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Re: power meter recommendation [JasoninHalifax] [ In reply to ]
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JasoninHalifax wrote:
What makes you think this would be my only wheel ever?

Itā€™s not that hard to get a PowerTap hub with an aero rim.

$$$$ to do that.

So easy to avoid it altogether with assiomas.

This is coming from the guy who loved and still has a power tap hub laced into a Dt Swiss wheel. Got so fed up with not being able to use any other wheelset that I got the assiomas, has been a great upgrade despite how well the pt hub worked.
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Re: power meter recommendation [lightheir] [ In reply to ]
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lightheir wrote:
JasoninHalifax wrote:
What makes you think this would be my only wheel ever?

Itā€™s not that hard to get a PowerTap hub with an aero rim.

$$$$ to do that.

So easy to avoid it altogether with assiomas.

This is coming from the guy who loved and still has a power tap hub laced into a Dt Swiss wheel. Got so fed up with not being able to use any other wheelset that I got the assiomas, has been a great upgrade despite how well the pt hub worked.
if youā€™re buying a new Wheelset anyway, the incremental cost isnā€™t that high for the PT. Plus, Iā€™m still on 9s, which parts are getting harder and harder to find. 9s hubs arenā€™t compatible with 11s (outside of a couple of edge cases or machining cassette bodies, which has risks. So Iā€™ll be in a position, probably in the next year or 2, where Iā€™d have to upgrade wheels anyway along with a switch to 11s.

I donā€™t need a bunch of wheels anymore. Most of my kms are on the trainer, so riding race wheels is no biggie.

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Re: power meter recommendation [Canuck1] [ In reply to ]
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Yes it was lower. For a while I had all 3 so it was easy to see the difference. I was more surprised that the SRM and 4iiii were the same.

I thought the P2M was good and would have bought again but didnā€™t work with the Shimano cranks on my new bike. Having 4iiii install was more convenient than getting a different crank altogether.
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Re: power meter recommendation [TOTRI] [ In reply to ]
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How did you compare a P2M to a SRM and to a 4iii?
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Re: power meter recommendation [jaretj] [ In reply to ]
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Nothing incredibly detailed. I was curious to see how they compared so rode in erg mode on the trainer over the course of a couple of weeks. Set it at 200w and rode at 90rpm and looked at what the PM was reading. Itā€™s not a perfect comparison but seemed to be directionally accurate.
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Re: power meter recommendation [TOTRI] [ In reply to ]
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New PM on the market. IQ2. Only the single sided version available right now, but dual sided is coming. Looks very promising for only 200 euros.



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Re: power meter recommendation [exxxviii] [ In reply to ]
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exxxviii wrote:
Ditto... I almost did not buy the Assiomas because of the looks. I am so glad I did not make that mistake. They are freakin' awesome.

"If you want to be happy for the rest of your life, never make a pretty woman your wife..."

100% agree. I've had a hub based PM, Quarq, and Stages, and I LOVE the Assiomas. They are so easy to install and use. Plus, it's so nice to simply recharge them when needed, and not have to worry about the battery going dead mid ride. I can check the battery level using my phone app, so I always know when I need to recharge them
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Re: power meter recommendation [EyeRunMD] [ In reply to ]
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There is only one Quarq.
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Re: power meter recommendation [exxxviii] [ In reply to ]
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+1 Assioma pedals, accurate, very easy to install, can change your pedals on other bike in 3 min. Plug usb so don't need to replace battery, very good price, and you can find spare parts easily on their website
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Re: power meter recommendation [1Wavemaker] [ In reply to ]
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1Wavemaker wrote:
There is only one Quarq.


Forgive me for being slow here, but I don't get what you are implying?
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Re: power meter recommendation [EyeRunMD] [ In reply to ]
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EyeRunMD wrote:
1Wavemaker wrote:
There is only one Quarq.


Forgive me for being slow here, but I don't get what you are implying?

That's strange :)
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Re: power meter recommendation [jaretj] [ In reply to ]
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jaretj wrote:
EyeRunMD wrote:
1Wavemaker wrote:
There is only one Quarq.


Forgive me for being slow here, but I don't get what you are implying?

That's strange :)



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Re: power meter recommendation [cowboy7] [ In reply to ]
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cowboy7 wrote:
jksu2000 wrote:
although no double sided metrics, the cheapest way to get power on the road is probably picking up an old powertap rear wheel. i used one years ago and it was solid. gave it away when the kids were born and i was out of tris/cycling. for $200-300 on ebay/classifieds, you'll get reliable power and a wheel to thrash/train on.

but yeah, if your budget's a little higher, the "just works" assiomas seem to be the ticket. easily to install/swap to other bikes, no batteries/battery covers to shake loose/break, consistent/reliable data, you can tweak the power reading to square up with your smart trainer via the app, etc. a bit of pain to switch my spd-sl cleats to the assioma/look cleats, but it's a one time 10-15min +/- an adjustment or 2.

i just bought a set from a STer here. can't wait to pair them up with the "just works" wahoo bolt when they arrive next week :-)


Had did you find the change to Look cleats ?

Are they very different to Shimano SPD-SLs ?

I didn't find the move from shimano to look cleats very difficult. the shimano platform seems to be a bit larger, but once I got the cleats set, i didn't have any regrets. that said, if Favero offered a shimano cleat pm, I would have gone that way, but the change was a small price to pay for an awesome pm.

Human Person
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Re: power meter recommendation [jaretj] [ In reply to ]
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jaretj wrote:
EyeRunMD wrote:
1Wavemaker wrote:
There is only one Quarq.



Forgive me for being slow here, but I don't get what you are implying?


That's strange :)


Ok, go ahead and mansplain it to me.

Is it "there is only one, quarq", meaning there is only one PM to behold and it is quarq?

Is it "there is only one quaorq?" but the "?" was left off?

My brain is apparently not functioning this AM so help!
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Re: power meter recommendation [EyeRunMD] [ In reply to ]
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EyeRunMD wrote:
jaretj wrote:
EyeRunMD wrote:
1Wavemaker wrote:
There is only one Quarq.



Forgive me for being slow here, but I don't get what you are implying?


That's strange :)


Ok, go ahead and mansplain it to me.

Is it "there is only one, quarq", meaning there is only one PM to behold and it is quarq?

Is it "there is only one quaorq?" but the "?" was left off?

My brain is apparently not functioning this AM so help!

psst... it's a physics joke....

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Re: power meter recommendation [EyeRunMD] [ In reply to ]
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EyeRunMD wrote:
jaretj wrote:
EyeRunMD wrote:
1Wavemaker wrote:
There is only one Quarq.



Forgive me for being slow here, but I don't get what you are implying?


That's strange :)


Ok, go ahead and mansplain it to me.

Is it "there is only one, quarq", meaning there is only one PM to behold and it is quarq?

Is it "there is only one quaorq?" but the "?" was left off?

My brain is apparently not functioning this AM so help!

Well, I was going for subatomic particles while Jason was going for the Star Trek reference.

I think Wavemaker was saying that the best option is Quarq
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Re: power meter recommendation [runner66] [ In reply to ]
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runner66 wrote:
I currently have the P1 pedals, single sided, on my tri bike which is on the trainer 24/7. I am looking to get a PM for my road bike and was just going to get another set of the P1 pedals since they have worked really well for me with zero issues. But the ability to charge the battery on the Assiomas sounds like a big upgrade over having to install a Lithium battery and then not knowing when it will die and have to be replaced.

I assume from the thread discussion that the Assioma battery can be charged by a USB?
I had dual-sided P1 pedals before my Assioma pedals. The Assiomas are eons ahead of the P1. Yes, they charge via standard USB (using the proprietary Assioma cable). They seem to last forever on a charge. I typically ride around 5 hours/week, and that would officially translate to about 10 weeks of riding between charges, according to the 50 hour official battery life. That is probably about right, since I cannot remember the last time I charged.

Also, I think the Assiomas are a little easier to clip in than the P1 pedals.
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Re: power meter recommendation [runner66] [ In reply to ]
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Yep, global supply is pretty much halted. I have been switching mine between my road bike and Tri bike regularly. I have been riding my road bike a lot more recently, and almost bought a second set just to eliminate the little bit of hassle. But, I punted when I saw that shipping is an unknown.
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Re: power meter recommendation [EyeRunMD] [ In reply to ]
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My two cents Quarq makes the best most reliable and there prices havee come down. They are bullet proof! The only other one I would consider is SRM.
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Re: power meter recommendation [JasoninHalifax] [ In reply to ]
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JasoninHalifax wrote:
EyeRunMD wrote:
jaretj wrote:
EyeRunMD wrote:
1Wavemaker wrote:
There is only one Quarq.



Forgive me for being slow here, but I don't get what you are implying?


That's strange :)



Ok, go ahead and mansplain it to me.

Is it "there is only one, quarq", meaning there is only one PM to behold and it is quarq?

Is it "there is only one quaorq?" but the "?" was left off?

My brain is apparently not functioning this AM so help!


psst... it's a physics joke....


Ha, thanks. I should've guessed at that since physics was one of my favorite subjects. My brain did not want to expand beyond the realm of bikes this AM.
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Re: power meter recommendation [EyeRunMD] [ In reply to ]
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I think this exchange here has reached peak-slowtwitch.

We can just close down the forum and move on with our lives now.
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Re: power meter recommendation [1Wavemaker] [ In reply to ]
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Regarding Quarq pricing along with powermeter price trends:

https://www.dcrainmaker.com/...-certain-models.html

Brett Z

ā€œLivinā€™ in a van down by the riverā€
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Re: power meter recommendation [jsmith] [ In reply to ]
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62 answers in 8 days: power meters are a popular subject to discuss about. Although you can be different opinion whether you really need them. I still do not have them, although I do spend money for speed.
I thought about power2max, because I have Rotor cranks, but it is kind of a hassle to mount and it costs money. I also do not have the feeling I NEED it. I do not think that power would benefit me addition to HF and Perceived Exertion.

That said, if I WOULD get a PM, I would not get a pedal based system, because I like my speedplays at the moment and I would be urged to use look keo. Since I walk in transition zones this would not be an option. If you're ok with look keo however, it seems that Favero Assioma is the thing to get by far.

To see left/right difference, what do you do with that information? Try to push more with one leg and less with another one? I wonder if you benefit from that. It is probably better to not see that information.
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