Graham,
My interest in investigating injecting foam forward of the spar was to
create buoyancy to offset the engine weight...I'm ignorant of the
relation of the spar location vis a vis the c.g.
Blissfully,
Fred
On Thursday, January 11, 2007, at 02:04 AM, Graham Singleton wrote:
> <grahamsingleton@btinternet.com>
>
> Fred
> as Neville suggests, there is probably enough foam in an XS to float
> the engine. All you need to be sure is 2 cubic ft of blue foam, which
> you could put in behind the wing spar.
> You could estimate the amount of PVC foam, (about 5 lbs/cu ft,?) from
> the wetted area of the aircraft. It's 3mm thick. You know the weight,
> 1370lbs.
> Graham
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