i've heard from pretty reliable sources that the pedals will be smashing...in a good way.
I don't see why you would have issues switching from bike to bike since the measuring of power will come from the pedal itself...bike won't matter?

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ihatecoldwater

It won't be a problem. Convinced?

Read the fine print.

The reason for anticipating issues when switching pedals bettween bikes is not a calculated one. It just seems that the more you move around/swap out/adjust things like this, the more glitches they have. Not trying to be pessimistic, just doing my research.......I hope these pedals are awesome!

The Polar/Look KeO Power system requires some calibration during setup with a special tool and crank arm length setting. The Garmin system is said to require no calibration or setting of crank arm length, which makes me a little skeptical of the Garmin system since they are effictively measuring the same thing- Torque and angular velocity. Of course there are more ways than one to skin a cat but, how did Garmin get around what Polar/Look could not with similar hardware? How will the Garmin system establish the zero position on the pedal circle? Accelerometers? Accuracy?

Until BOTH products are mass produced, released and have been used in the field for a while it is all just pie in the sky.

My $0.02

Since no calibration is required, how will the pedal know that it is on a different bike......or for that matter, what bike it will first be attached to.

http://www.dcrainmaker.com/...-wanted-to-know.html

In short, there is an orthogonal set of strain sensors AND an orthogonal set of accelerometers. Using those then spindle orientation is not needed to be "fixed" (as in the Look/Polar), and cadence, along with crank length, is easily determined while operating.

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http://bikeblather.blogspot.com/

I don't see any mention of how accurate the Vector is expected to be in the "Everything you wanted to know" article, (or anywhere else). Have you heard anything about this? Will it be comparable to the +-2% of PT/Quarg/SRM?

Everything I've heard is they expect to be within that "standard"...

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http://bikeblather.blogspot.com/

Could not agree more. Prospective buyers should spend some time on the Ergomo board.

You don't know what you don"t know. Calibration at the factory is different than calibration on the specific crank.

You don't know what I don't know what I don't know...

I've never said that ANY power meter shouldn't be at least able to have it's calibration checked "in the field"...or, what RChung likes to call "having a '9' key".

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http://bikeblather.blogspot.com/

I can't remember where i read it ( I'll try to find it) but i read that it is +/- 5% which i dont think is that great. Also Q factor will be increased 2mm...

http://forum.slowtwitch.com/...post=2519797#2519797

Let's just say I am am a doubting thomas....oh, and I have drunk the Garmin FR910XT or Vector kool aid.

I believe that it was the Looks that were quoted to be within 5%. I've yet to see the Garmins nail down a figure.

Hugh

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Genetics load the gun, lifestyle pulls the trigger.

Back when they were still MetriGear, the claim was +/- 1.5%...

http://www.powerfaq.org/...min_Metrigear_Vector

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http://bikeblather.blogspot.com/

plus/minus 1.5% - give me a break....maybe in the lab...how old is this link

"This page was last modified on 26 October 2010, at 16:33."

Let's say the Vector turns out to be just as accurate as the Quarq and proves to have no gremlins....hypothetical.

What reason if any would I want one over the other given that swapping a crank over or pedal takes me about the same time?

I have been waiting....waiting....waiting....and I fear if I wait for the release of a Speedplay version it could be 2 or 3 more years. Looking hard at Quarq, but still come back to Vector in the back of my mind.

Because you can swap onto different cranksets. So if you have a bike with a 175mm 50/34 for mountains, a bike with a 172.5mm 53/39 for flatter terrain, a 165mm 56/42 for TTs, the pedals can go onto any one of them, or even onto a mountain bike etc. Or if you want to take them on holiday to put on a hired bike, there are many scenarios where pedals are more useful.

I use two different cranks on my TT bike, a 53/39 for most courses and a 50/36 for really hilly courses. My road bike has a 50/34 with longer crank arms. I have several wheelsets that I use as well. For my situation a pedal based power meter would be a perfect choice, provided that they are robust and accurate.

Hey...sciguy said he's never seen a figure. I was merely pointing him to one that was stated quite a while back. We'll see when we see...

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http://bikeblather.blogspot.com/

read the whole post....from the 2010 post, from Metrigear's own PR

"Until they are released there is no way to validate the claimed accuracy."