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PostPosted: Fri Jan 20, 2017 7:05 pm 
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Posts: 58
so i have a park tool digital scale (the DS-1), and i always used to just hold it stead in my two hands to weight my bikes. but, i just recently got a park tool repair stand (the PCS-10), so of course i decided to no longer weigh by holding it, but to clamp the scale in the stand and weigh like that. this has resulted in a 200 grams difference between holding it by hand and having it clamped in the stand ( it is 200 lighter in the stand).

what is going with that? which measurement is correct?

thanks!

o


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Posted: Fri Jan 20, 2017 7:05 pm 


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PostPosted: Fri Jan 20, 2017 7:42 pm 
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I would trust the measure from the stand more, a lot more steady!!

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PostPosted: Fri Jan 20, 2017 7:53 pm 
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Delorre wrote:
I would trust the measure from the stand more, a lot more steady!!


yeah that is what i was thinking, but i just wanted to make sure there wasn't some sort of calibration or something i had to do depending on how it was mounted/held.


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PostPosted: Fri Jan 20, 2017 8:09 pm 
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How you reset is very important. If you hold it from the handle and weight lifting from the cord, it may show a very skewed result. If you reset properly, clamped via handle on stand, lift from cord by hand or hang from cord from a stationary object should all yield same result.

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PostPosted: Fri Jan 20, 2017 8:22 pm 
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The shape is designed to mount on a steady stand.

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PostPosted: Fri Jan 20, 2017 8:30 pm 
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Your hand just isn't really steady enough for a precise measurement.
A 20 oz fish...maybe OK
A 15 lb bike: no way.


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PostPosted: Fri Jan 20, 2017 10:25 pm 
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Rick wrote:
Your hand just isn't really steady enough for a precise measurement.
A 20 oz fish...maybe OK
A 15 lb bike: no way.



thank you all for the replies-- i am glad it is just the stability factor and not something weird with my scale. i will stop trying to be a tough guy from now on. ;)

glad i got the stand, though, as now all my bikes are 200 grams lighter...!!


o


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PostPosted: Fri Jan 20, 2017 10:58 pm 
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Rick wrote:
Your hand just isn't really steady enough for a precise measurement.
A 20 oz fish...maybe OK
A 15 lb bike: no way.


there's no 15 lb bikes here...this is weight weenies.

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PostPosted: Fri Jan 20, 2017 11:22 pm 
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octave wrote:
as now all my bikes are 200 grams lighter...!!


o

Let us know how much faster yo now are ;)

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Posted: Fri Jan 20, 2017 11:22 pm 


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PostPosted: Sat Jan 21, 2017 12:33 am 
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Joined: Mon Jan 13, 2014 7:26 am
Posts: 249
I had a similar experience with PCS-10. Depending on where I hooked the bike from (middle of the top tube vs the saddle) the measured weight had 2-3 oz difference (BTW, I got a replacement and had the same experience.) I am guessing the issue is caused by having a wide two hooked design. When the center of gravity shifts, the hooks can easily touch the inner side of the handle, affecting the measurement.
Ended up returning it back...


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