Questions on NiMH Batteries

Exactly right, Charlie!

I've chosen to add an extra 4 lb of lead to the tail battery box
because, with dry wings and tail, my current CG is at 71% aft and that
requires most of my aft trim capability, full aft trim for thermalling
below about 50 KIAS. The extra 4 lb moves the CG back to 79% aft which
should give me one or two notches on the trimmer and should be just fine
during the winter months. In the summer, I can supplement the tail
weight with the tail tank to move the CG back into the 90s. According
to my W&B spreadsheet, I can trim to 92% aft at gross weight. That
satisfies me.

On 2/28/2015 4:41 PM, Charlie M. (UH & 002 owner/pilot) wrote:
On Saturday, February 28, 2015 at 6:10:30 PM UTC-5, MNLou wrote:
Hey Dan -

Why not just use water for tail ballast and not have so much weight up high? Possibly a freezing problem at altitude?
Water can be good to offset the balance when dumping wing ballast..... If he is looking at "static balance" (my choice of words).... he is looking at fixed ballast for the "normal pilot" (normal is a relative term here.... if you're a pilot, lots of peeps think we're abnormal.... sigh).
Tail water ballast can be useful when dumping wing water ballast creates a CG issue.

Just my $0.02US........

--
Dan Marotta