Blades / was tower vibration [RE-wrenches]

[Kirk Herander]

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Blade 1: 430 grams (15.3 oz)
Blade 2: 450 grams (16.1 oz)
Blade 3: 545 grams (19.5 oz)

Blade 3 is 20% heavier than the other two.

Kirk Herander
Vermont Solar Engineering
802.863.1202
fax 802.863-7908
NABCEP(tm) Certified Solar PV Installer
Xantrex Certified Dealer Charter Member
NYSERDA-eligible installer
VT Solar and Wind Partner


Kirk 
what is the total weight of the blade?  I am surprized
that as little as 3.5 OZ would cause such a large
vibration?

--- Kirk Herander <kirk at vtsolar.com> wrote:

> 
> One of the blades is 3.5 oz. heavier than the other
> two. The blades
> appear to be in good shape w/ no balancing weights
> thrown off and no
> sign of cracking or water damage (these are wooden
> blades). Hard for me
> to believe they weren't imbalanced from day one. Go
> figure.
> 
> Kirk Herander
> Vermont Solar Engineering
> 802.863.1202
> fax 802.863-7908
> NABCEP(tm) Certified Solar PV Installer
> Xantrex Certified Dealer Charter Member
> NYSERDA-eligible installer
> VT Solar and Wind Partner


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