REFLECTOR: Plumbing the Spar

[Phil Hooper]

Thank you all for the thoughtful responses.  I also talked to Scott Baker
who is always so knowledgeable who confirmed your sage advice, before I
read your messages.  I had assumed the spar was pretty rigid.  WRONG.  I
was pleasantly surprised last night to lift the back of the wing and watch
the spar flex lots.  Whew!  I shall implement your wisdom.  Happy building.


On Mon, Feb 3, 2014 at 6:58 PM, James Traynor <jtetraynor at hotmail.com>wrote:

> Hi Phil
>
> I just did my lower co-pilot side strake and yes have every thing plum
> level and true. Use the incidence gauge and twist the wing with wedges
>  which will twist the  spar back into place and flox in the back lower
> strake when ready. I pushed up from the ground to lock in the lower strake
> and as I lifted the wing laid back a few degrees. NEXT time I will have
> boards holding (pushing) down from the ceiling in my shop. Yes if there is
> any twist it will come out if you wedge the wing back perfect and lock in
> the lower strake to the side of the fuselage. Also if the lower strake will
> not move after floxing  you will need to cut the lower skin down the center
> of the spar and wing in that 1/2" gap as in the manual.
> I found that once bonded to the fuselage there is no changing the
> incidence at this time unless major undo work is done.
> I love working with this kind of construction if you make a mistake there
> is and easy undo, redo, rebuild and fix it trick.
>
> Have fun and enjoy
>
> James
>
> ------------------------------
> From: ljepstein at hotmail.com
> Date: Mon, 3 Feb 2014 20:32:13 -0500
> To: reflector at tvbf.org
> Subject: Re: REFLECTOR: Plumbing the Spar
>
>
> No-
>
> The wings should be on, all plumb & level, incidence gauge on, while you
> fabricate/install the strakes. The strakes are what hold the spar/wing at
> the correct incidence.
>
> Larry
>
>
> On Feb 3, 2014, at 7:40 PM, Carl Hoffman <hoffman3 at rcn.com> wrote:
>
> I don't believe your suppose to put the wings on until the strakes have
> completed.
>
> Carl Hoffman
>
> Sent from my iPad.
>
>
> On Feb 3, 2014, at 5:23 PM, Phil Hooper <phil at hdmnet.com> wrote:
>
> Slow building Hooper here.  When we installed the spar everything was
> level, on the money.  The vertical line on the spar bushings was also on
> the money.  The fire wall was and remains dead nuts perfect.  The wings
> have been on for three months and we're about to mount the lower strake on
> the pilot side.  I rechecked the levels, and all is exact.  Nothing has
> moved.  *However*, in placing a level against the spare (front,
> outboard), and plumbing a line down between the spar and the wing to the
> center or the earth, it appears that the outboard part of the spar is
> twisted a bit, not in plumb, rotating aft.  My bubble level error may be
> from unevenness in the spar surface.  I am also assuming that twist will
> be induced by the weight of the wings.
>
> *Any thoughts from fellow builders wiser than I*. Thanks very much.
>
> --
>
> --
>
> *Phil Hooper*President
>  *Harvest Development & Media Inc.*
> 19851 Yorba Linda Blvd., Suite 204
> Yorba Linda, CA 92886
>
> *voice:* 714.693.8745
> *fax:* 714.777.0134
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> *email:* phil at hdmnet.com
>
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-- 

-- 

*Phil Hooper*President
 *Harvest Development & Media Inc.*
19851 Yorba Linda Blvd., Suite 204
Yorba Linda, CA 92886

*voice:* 714.693.8745
*fax:* 714.777.0134
*web:* http://www.hdmnet.com/
*email:* phil at hdmnet.com
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