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 Post subject: Re: Garmin Vector Usage
PostPosted: Sun Dec 01, 2013 11:52 pm 
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Joined: Sun Nov 10, 2002 6:03 pm
Posts: 309
Location: Belfast
Thanks for all the replies
I used the pedals in anger on Friday. I decided to carry out an FTP test on myself; I used the protocol as advised in Hunter Allen & Andrew Coggan's EXCELLENT book Training and Racing with a Power Meter. This is a structured warm-up followed by a max 5 minute piece and then the crucial 20 minute maximum steady piece and a wind-down.
I had the Garmin Edge 500 reading the data from the Vectors and my old Cat-Eye computer set on speed and cadence for everything.
The upshot was that the Vectors/Edge did not drop out (go to "0:00W") BUT they did fluctuate throughout the session (320 -280W). Meanwhile I and the Cat-Eye held a steady speed and cadence throughout the session.
At this point I have two questions:
1. Are such fluctuations normal (even when speed and cadence are steady) ....or is it the dished/uneven cranks .... or is it me?
2. Any thoughts on how to solve the problem [new cranks? smoothing existing cranks?]


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 Post subject: Re: Garmin Vector Usage
PostPosted: Mon Dec 02, 2013 12:42 am 
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Joined: Fri Oct 05, 2012 3:52 am
Posts: 119
Are you asking if displayed wattages would vary like that in this kind of test? The answer is yes, on any power meter/head unit combo.

You can change the "smoothing" (sampling shown on the screen. i.e. 1/3/5 secs typically.....although your head unit will still record all data for later download) displayed so the fluctuations are less pronounced. Still, you will get minor fluctuations like you stated based on terrain or even on a trainer, because, well, you aren't a robot.


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 Post subject: Re: Garmin Vector Usage
Posted: Mon Dec 02, 2013 12:42 am 


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PostPosted: Fri Jan 24, 2014 6:37 pm 
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Joined: Thu Dec 09, 2004 5:51 pm
Posts: 123
Has anyone tried the vectors with THM clavicula's. If I remember correctly the cranks can't be more than 15mm thick to work.

Does anyone know the thickness of the clavicula's or if they work ?


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 Post subject: Re: Garmin Vector Usage
PostPosted: Fri Jan 24, 2014 7:01 pm 
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Joined: Wed Feb 27, 2013 6:47 pm
Posts: 2
Enda Marron wrote:
Thanks for all the replies
I used the pedals in anger on Friday. I decided to carry out an FTP test on myself; I used the protocol as advised in Hunter Allen & Andrew Coggan's EXCELLENT book Training and Racing with a Power Meter. This is a structured warm-up followed by a max 5 minute piece and then the crucial 20 minute maximum steady piece and a wind-down.
I had the Garmin Edge 500 reading the data from the Vectors and my old Cat-Eye computer set on speed and cadence for everything.
The upshot was that the Vectors/Edge did not drop out (go to "0:00W") BUT they did fluctuate throughout the session (320 -280W). Meanwhile I and the Cat-Eye held a steady speed and cadence throughout the session.
At this point I have two questions:
1. Are such fluctuations normal (even when speed and cadence are steady) ....or is it the dished/uneven cranks .... or is it me?
2. Any thoughts on how to solve the problem [new cranks? smoothing existing cranks?]


I'm sure it is You, why? becasue I have the same. Try testing at half of your FTP and you will see you will be able to keep power within 10W, but it takes time before you learn such a steady pedaling.
Post link to garmin connenct from that ride.


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