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Power2Max vs. Garmin Vector vs. Waiting
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Yes, I know, there are a thousand and one threads already about power meters. I’ve read through a lot of them, and DCRainmaker’s posts and other reviews. I’ve narrowed down my choices to Power2Max or the single Garmin Vector S (...or waiting til Spring?). Wondering if anyone has any specific input into either, or if others went through the same decision. I have Rotor 3DF cranks (stock 2014 Cervelo P3). There are some great Black Friday deals going on now which may cause me to pull the trigger, or maybe wait until the Spring when new units come out or prices are possibly cheaper.

P2M (Type S)
-Seems to “just work” per DCRainmaker and have read good reviews all around
-Would get the Type S since the Classic is sold out
-$200 more expensive than Garmin Vector S
-Power on both legs with left vs. right estimates
-Can’t upgrade firmware

Garmin Vector S
-$200 cheaper than P2M Type S
-Portability between bikes
-Seems a little more finicky for some reason. I’ve read about people having issues with these yet I haven’t really read much about P2M problems.
-Only single leg power
-Seems like there’s more data metrics with Garmin’s “Cycling Dynamics” per DCRainmaker’s review (although some of this may only work with the dual pedals and not the Vector S)
-Can upgrade firmware
-I already use Look Keo pedals and would be easy to switch

Waiting
-4iiii looks promising but doesn’t seem to work with my Rotor 3DF crank
-Possibility of future price declines. I don’t really need a power meter NOW – I’ve been training through the winter with TrainerRoad virtual power – it would be more to take advantage of Black Friday sales if they’re cheaper now. I will want one by the spring when I am in full training mode.

I welcome all thoughts. Thanks all!!
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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I'm not interested in L only solutions.

I don't care for the idea of waiting until spring, that's a lot of wasted time between now and then. You could be gathering data, adjusting your training, all winter.

I would get the P2M.
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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P2M + Black Friday coupon = win
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Re: Power2Max vs. Garmin Vector vs. Waiting [ffmedic84] [ In reply to ]
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if you have the right cranks, power2max can be moved way faster than the Garmin pedals, and you don't need to second guess the install. I can swap mine in under 2 minutes. It is a single 8mm bolt. Garmin products are generally not built to last (they do have good customer service, but I would rather not know a company's return policy). When you crash, hitting pedals is almost a guarantee, but a crank set is much more protected. Also if you ride in nasty weather, pedals are debris traps, which is never good for electronics.
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Re: Power2Max vs. Garmin Vector vs. Waiting [goldentech] [ In reply to ]
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Quote:
When you crash, hitting pedals is almost a guarantee

I have crashed with Garmin Vectors and nothing was harmed so this is not true.
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Re: Power2Max vs. Garmin Vector vs. Waiting [ffmedic84] [ In reply to ]
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ffmedic84 wrote:
P2M + Black Friday coupon = win

+1

I don't think all of the P2max Classic models are sold out, only certain variations?
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Re: Power2Max vs. Garmin Vector vs. Waiting [James Haycraft] [ In reply to ]
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James Haycraft wrote:
Quote:
When you crash, hitting pedals is almost a guarantee


I have crashed with Garmin Vectors and nothing was harmed so this is not true.

almost guarantee =/= inevitable.

@floathammerholdon | @partners_in_tri
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Re: Power2Max vs. Garmin Vector vs. Waiting [cloy26] [ In reply to ]
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I was merely arguing semantics. Writing off the Vectors because they are pedals is silly in my opinion.
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Re: Power2Max vs. Garmin Vector vs. Waiting [James Haycraft] [ In reply to ]
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Thanks all. James do you have the Vector S or dual? I take it you are happy with them? So far the dominating response seems to be P2M.
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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I have the Vectors (dual) and they work fine. There was some growing pain but I'm happy with them. The installation process for the Vectors doesn't make switching them from bike to bike any easier though. I was on the fence between Vectors, Quarq, and P2M. My local bike shop was giving a great deal on them at the time and was hard to pass up. I would go with whatever one you can get for a better deal.
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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Switching pedals may be harder than the power2max crank, since you need a torque wrench. Not to mention the fact that left-only power seems pointless.

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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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I am in a similar boat. But have not ruled out stages or powertap yet!

Just got Kickr so I have power for the winter. Going to wait another 3-4 months to see what shakes down... I want a tri bike + wheels + PM in the spring, so want to make sure they are all compatible (and ideally want a way to move PM to road bike when needed, but may not get that wish)
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Re: Power2Max vs. Garmin Vector vs. Waiting [ChevyTri27] [ In reply to ]
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Thanks Chevy that's just the sort of feedback I was looking for. I can get good deals on both now, but the P2M still comes out to around $200 more expensive than the Vector S. I don't feel like paying up for the dual Vectors as that would be even more. Do you think it's worth the $200 to go from Vector S to P2M?
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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not to highjack the thread but i was looking at the P2M too with the black friday deals. I currently have a shimano 10 speed ultegra crank, Felt DA bike, I am not 100% sure which P2M i can get, i wanted 165 mm cranks. Can anybody help out?
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Re: Power2Max vs. Garmin Vector vs. Waiting [James Haycraft] [ In reply to ]
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I will be very impressed when you find a way to crash and damage a crank before damaging the pedals. Not suggesting he write them off, just pointing out that pedals are a) more likely to get impacted during a crash b) they are going to get dirty, wet, etc during foul weather c) it takes one bolt to swap them (w/o the install torque impacting the power # readings) d) Garmin makes some jankey hardware.
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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I have the dual. I am very happy with them. I would purchase them in equal priority with a Quarq, personally. I would not get left-hand only power (again, personally) as the whole point is consistent (and accurate), trustworthy data.

ETA, I've also had Quarq (have one on P5 currently). I can swap the Vectors as fast as I can swap my Quarq (<5 minutes). It's not hard.
Last edited by: James Haycraft: Nov 25, 14 10:05
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Re: Power2Max vs. Garmin Vector vs. Waiting [goldentech] [ In reply to ]
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goldentech wrote:
I will be very impressed when you find a way to crash and damage a crank before damaging the pedals. Not suggesting he write them off, just pointing out that pedals are a) more likely to get impacted during a crash b) they are going to get dirty, wet, etc during foul weather c) it takes one bolt to swap them (w/o the install torque impacting the power # readings) d) Garmin makes some jankey hardware.

As a general rule, I've found that when people note the above, they don't actually have Vector nor have used it. I've yet to hear of anyone breaking the pedals. Pedal pods by installation? Sure, though that was addressed in recent hardware changes and they'll swap out broken pods for free anyway no questions asked. Actually, they're basically swapping any hardware you manage to break for pretty much any reason unless you throw it in front of a train and then light it on fire afterwards.

That said, as far as deals go, you can't beat the Power2Max deals right now from a crank perspective that doesn't impact wheel choice. Also, per OP's question on Cycling Dynamics, that will indeed only be the dual-sensor Vector, not Vector S.


-
My tiny little slice of the internets: dcrainmaker.com
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Re: Power2Max vs. Garmin Vector vs. Waiting [runobx] [ In reply to ]
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The guy on the power2max thread should be able to answer that. Plus they have compatibility listed for each crank on their website. You just gotta figure out what bottom bracket you have.

___________________
Twitter | Kancman | Blog
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Re: Power2Max vs. Garmin Vector vs. Waiting [dcrainmaker] [ In reply to ]
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Agreed, Garmin is very good about replacing their broken hardware. But how is that better than never having to deal with it in the first place, even if it is "free w/no questions asked"? If you are racing a crit or technical TT situation, crashing is not an if, but when. What about "skipped" pedals? And that's not even considering the battle damage from questionable mounts or transition incidents for the people who have not yet got the rubber band-your-shoes memo yet?
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Re: Power2Max vs. Garmin Vector vs. Waiting [Zenmaster28] [ In reply to ]
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Zenmaster28 wrote:
ffmedic84 wrote:
P2M + Black Friday coupon = win


+1

I don't think all of the P2max Classic models are sold out, only certain variations?

+2
If you do decide to wait, I'd strongly recommend using Virtual Power via TrainerRoad as a substitute this winter. I think you will get get lots of good data.
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Re: Power2Max vs. Garmin Vector vs. Waiting [goldentech] [ In reply to ]
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Out of curiosity, have you used the Vectors?
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Re: Power2Max vs. Garmin Vector vs. Waiting [James Haycraft] [ In reply to ]
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This thread is awesome, really appreciate all the input (even from the man, the myth, the legend, DCRainmaker himself). Sounds like the takeaways are

Garmin Vector
-Probably not worth getting just the single leg pedal
-They're not as bad as people who don't have them think they are
-They're not as easy to swap with different bikes as initially thought
-Garmin has been very good at providing free replacement of broken parts (this is also true from my experience with various Garmin Forerunners. Obviously you'd rather not have to deal with this in the first place, but it is good to know that Garmin stands by their products.)

P2M
-Black Friday is a great deal
-Installation isn't as difficult as previously thought
-Probably worth $200 more than the single Vector S. If I wanted to pay more for the dual Vector, maybe that would be a better option, but I don't want to pay that much.

So I think that given I don't want to spend as much for the dual Vectors (and it goes without saying I want the flexibility to change wheels so I eliminated Powertap), P2M seems like the way to go...
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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wahoowatri wrote:
This thread is awesome, really appreciate all the input (even from the man, the myth, the legend, DCRainmaker himself). Sounds like the takeaways are

Garmin Vector
-Probably not worth getting just the single leg pedal
-They're not as bad as people who don't have them think they are
-They're not as easy to swap with different bikes as initially thought
-Garmin has been very good at providing free replacement of broken parts (this is also true from my experience with various Garmin Forerunners. Obviously you'd rather not have to deal with this in the first place, but it is good to know that Garmin stands by their products.)

P2M
-Black Friday is a great deal
-Installation isn't as difficult as previously thought
-Probably worth $200 more than the single Vector S. If I wanted to pay more for the dual Vector, maybe that would be a better option, but I don't want to pay that much.

So I think that given I don't want to spend as much for the dual Vectors (and it goes without saying I want the flexibility to change wheels so I eliminated Powertap), P2M seems like the way to go...

Dual Vectors can be had for <$1200 right now.
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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If it helps, I have warrantied a P2M and got a replacement with NQA. They have been very good to me.
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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Just checking...you do know that you can upgrade from the Garmin S (single pedal) to the full kit, right? There is no price break for buying them all at once. If you do get the Garmin S now, save that $200, then skip a couple fancy dinners/bar nights and soon enough you can buy the right pedal.

Check out DCR's video on swapping the vectors. Even though he forgot a couple steps and had to go back, it was still only 6 minutes. Sure, the guy above can swap a crank in 2 minutes, but I bet if he had as much practice swapping vectors as cranks, he could beat DCR's time by at least a minute or two. Swappabilty between bikes seems about as easy, but being pedals...compatibility is almost assured!
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Re: Power2Max vs. Garmin Vector vs. Waiting [Nick B] [ In reply to ]
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I just about convinced myself to go P2M and now you guys are mixing me up. Nick B have you seen the dual vectors new for that price?
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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I'd buy the P2M powermeter only, use the Black Friday coupon code and you're done.
No pods to worry about, no left side only to throw things off.

The deal offered pushed me over the cliff and I'm sure I'll really enjoy it.
Having run SRMs from 2004 - 2008 and recently having a PT G3 I'm looking forward to running a crank mount PM again not to mention a super clean install which wasn't the case when I had an SRM
Good luck with your decision
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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I bought Vectors back in May. I've swapped them between my wife's bike and mine probably 3-4 times a week since as she's trained for her first Ironman. I'm no bike mechanic and I can do it in just a few minutes. We've had consistent readings and almost no issues. I'm considering buying another pair (S) just so I don't have to swap them anymore. I originally was interested in L/R balance, however I seldom look at it anymore. The few times it's been off it's been consistent to one side or the other for the entire ride which points to a calibration issue. Otherwise it's almost always 49/51, maybe 48/52 on a bad day.

Two thumbs up here.
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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I'm selling my 808 Powertaps and will be using my Quarq, but am seriously considering selling the Quarq as well to get the Vectors. It would give me more consistent power and allow me to carry around the pedals instead of a crank. Plus I have a couple bikes that don't have power, like my crit-only CAAD 10 beater, and it would be nice to move the vectors around.

Does anyone know if there will be any good sales on the Vectors? I see someone mentioned getting them for $1200? Not interested in the Vector S at all because of the one-sided power.

What does everyone think? I would just hate to give up my Speedplays.
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Re: Power2Max vs. Garmin Vector vs. Waiting [mountaindood] [ In reply to ]
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i purchased the vectors and will be giving up my speedplays after two years. i will let you know in a couple of weeks how much i hate going to single sided pedals and hopefully not have any problems unclipping..lol. note, i had the shimano's 6700's and it was almost impossible to unclipped with the pedals and they were set at the lowest tension.
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Re: Power2Max vs. Garmin Vector vs. Waiting [gleeclub] [ In reply to ]
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ok now I'm even more confused than when I first started. Leaning towards sacking up and getting the dual vectors now.
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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I wouldn't waste money on dual vectors, it's only a very minute difference and either way you're increasing power on both legs when your changing your power total so S would still give you a really good idea of pacing. I would not spend 700 to get a barely different power reading personally cause I don't have that kind of money to spend on shit like that.
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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I have a Stages on my TT bike and Powertap on my road bike.

IMHO the Stages is excellent - my left leg is slightly weaker than my right so am more than happy with the left side only power. If $$ is an issue and you want a solid product that transmits in both Ant+ and Bluetooth its a great option.

Again just my opinion :)

I ride:
Cervelo - P-Series/R3
GT - Sensor Carbon Expert

Supporters - Flo Cycling, Mount Bikes
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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I have a power2max and have been super happy, no problems whatsoever yet still great customer service if I have questions. I like the features and also have confidence if I crashed nothing would happen (buil2resist feature). I think its super accurate ect...
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Re: Power2Max vs. Garmin Vector vs. Waiting [eggplantOG] [ In reply to ]
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eggplantOG wrote:
I wouldn't waste money on dual vectors, it's only a very minute difference and either way you're increasing power on both legs when your changing your power total so S would still give you a really good idea of pacing. I would not spend 700 to get a barely different power reading personally cause I don't have that kind of money to spend on shit like that.

Any one sided option is a waste of money. It neither accurately measures power of the whole system nor is inexpensive. Single sided units offer less reliable and meaningful data than a heart rate monitor.

Right now the only Power meter players that I consider relevant are Powertap, Quarq, SRM, and the dual sided Garmin Vector. Everything else has some serious flaws or just merely vaporware. No matter how good the promise, I would never wait to be the first one to use a new company's power meter.
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Re: Power2Max vs. Garmin Vector vs. Waiting [Nick B] [ In reply to ]
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Nick B wrote:
eggplantOG wrote:
I wouldn't waste money on dual vectors, it's only a very minute difference and either way you're increasing power on both legs when your changing your power total so S would still give you a really good idea of pacing. I would not spend 700 to get a barely different power reading personally cause I don't have that kind of money to spend on shit like that.


Any one sided option is a waste of money. It neither accurately measures power of the whole system nor is inexpensive. Single sided units offer less reliable and meaningful data than a heart rate monitor.

Right now the only Power meter players that I consider relevant are Powertap, Quarq, SRM, and the dual sided Garmin Vector. Everything else has some serious flaws or just merely vaporware. No matter how good the promise, I would never wait to be the first one to use a new company's power meter.

I agree, but P2M seems pretty solid. As a "retailer" I cannot "recommend" them but everything I've heard is positive.
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Re: Power2Max vs. Garmin Vector vs. Waiting [Nick B] [ In reply to ]
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Nick B wrote:
eggplantOG wrote:
I wouldn't waste money on dual vectors, it's only a very minute difference and either way you're increasing power on both legs when your changing your power total so S would still give you a really good idea of pacing. I would not spend 700 to get a barely different power reading personally cause I don't have that kind of money to spend on shit like that.


Any one sided option is a waste of money. It neither accurately measures power of the whole system nor is inexpensive. Single sided units offer less reliable and meaningful data than a heart rate monitor.

Right now the only Power meter players that I consider relevant are Powertap, Quarq, SRM, and the dual sided Garmin Vector. Everything else has some serious flaws or just merely vaporware. No matter how good the promise, I would never wait to be the first one to use a new company's power meter.

What's the serious flaw with the Power2max?
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Re: Power2Max vs. Garmin Vector vs. Waiting [Zenmaster28] [ In reply to ]
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Zenmaster28 wrote:
Nick B wrote:
eggplantOG wrote:
I wouldn't waste money on dual vectors, it's only a very minute difference and either way you're increasing power on both legs when your changing your power total so S would still give you a really good idea of pacing. I would not spend 700 to get a barely different power reading personally cause I don't have that kind of money to spend on shit like that.


Any one sided option is a waste of money. It neither accurately measures power of the whole system nor is inexpensive. Single sided units offer less reliable and meaningful data than a heart rate monitor.

Right now the only Power meter players that I consider relevant are Powertap, Quarq, SRM, and the dual sided Garmin Vector. Everything else has some serious flaws or just merely vaporware. No matter how good the promise, I would never wait to be the first one to use a new company's power meter.

What's the serious flaw with the Power2max?

Units have often reported to be consistently >2% off in terms of accuracy. That wouldn't be an issue if P2M would let the user adjust the slope.
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Re: Power2Max vs. Garmin Vector vs. Waiting [Nick B] [ In reply to ]
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my power2max type S was reading about 2% more vs a powertap wheel which I attribute to drivetrain loss. Against the computrainer, the p2m was spot on.
Last edited by: astig: Nov 26, 14 7:01
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Re: Power2Max vs. Garmin Vector vs. Waiting [ In reply to ]
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The only way to really test the accuracy of a PM is to do a static torque analysis using a verified, known weight (preferably NIST-certified). In the Google Wattage forums, several users have reported large errors during static torque tests on their Power2Max units.

More of a concern, however - is that when they contacted Power2Max about it, Power2Max basically said that they don't trust static torque tests, that they should just trust P2M that their unit is accurate, and there is never a need for a user to change the slope of a power meter anyways. Both SRM and Quarq allow you to adjust the slope of your unit.

If your P2M is accurate, that's great. But if it ever falls out of calibration there's no way to ever get it back on track, short of sending it back to P2M. And even then - it's not comforting to hear that P2M doesn't believe in static torque calibration.

There are several threads in the Google Wattage forums discussing this. I highly recommend people who are interested to join and give them a read; some very good information there.
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Re: Power2Max vs. Garmin Vector vs. Waiting [goldentech] [ In reply to ]
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I touched my vector pedal twice in races this year. Both times in the final corner of a crit (and both times it was the right pedal). A good chunk out of the carbon was removed from the pedal, but the pod was untouched. I haven't had any issues and I crash tested them a couple of times this year.
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Re: Power2Max vs. Garmin Vector vs. Waiting [astig] [ In reply to ]
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can anyone comment what's involved with pairing the P2M to a head unit? I'm thinking about in a triathlon situation, I'll be racing with my garmin 920xt - can the P2M be paired beforehand or does it have to be while on the bike in the race?

Same for the Vectors - heard there is something that lasts for 12 hours otherwise it has to be calibrated every ride. What is exactly involved here in a triathlon race situation?

I am already signed up for 2 70.3s next year which I will need to remove my pedals for to travel to, and although in theory switching pedals can be easy, it's an added headache to deal with on race weekend.
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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With both, you will pair them once during initial setup and then you'd want to do a quick calibration on the bike. For many PMs, you simply pedal backwards a few turns.

A lot of people report troubles not being able to pair once they get to a race. This is due to the watch being in a state of continual search and not locking onto your particular PM. Just try to find an instance where you can replicate race day with your setup (lots of PMs around) to check.
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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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take this fwiw, as I have multiple athletes on both systems.

P2M > Vector

Brian Stover USAT LII
Accelerate3 Coaching
Insta

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Re: Power2Max vs. Garmin Vector vs. Waiting [wahoowatri] [ In reply to ]
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you pair the device during initial setup. I calibrate when the pm in transition area in the morning. I dont re-calibrate anymore after that.
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Re: Power2Max vs. Garmin Vector vs. Waiting [dfroelich] [ In reply to ]
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I was in your shoes a few weeks ago. I considered Vectors, Stages ,and ended up with a Power2max. I'm just waiting on my Black Friday computer so I can see how it works.

What made the decision for me was 2 things.

1). The it just works factor, and tons of positive reviews vs some flakey reviews on the vectors

2). I used the opportunity to get a different crank length and mid compact with the power meter and it saved me some money.

PS you can upgrade vector S to full Vector set if you wish.

Jason
Last edited by: Nussy: Nov 28, 14 18:00
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