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Re: Europa-List: Re: Weight and Balance Scales

Subject: Re: Europa-List: Re: Weight and Balance Scales
From: Robert Borger <rlborger@mac.com>
Date: Thu, 14 Mar 2013 17:46:50

Jonathan,

I made ramps 1 meter long the height of the scales to allow me to roll my tri up
on them.  When I did, I found out that it wasn't quite level fore/aft, that
I had to raise the mains another 1/2 in or so.  I made a 1/2" high stand for the
mains scales and added a 1/2" stick under the end of the ramps to match heights.
Now when I roll the aircraft up on the scales it's nice and level.  I assume
that you have the XS Tri Owners Manual with the W&B procedures and calculations?
If not, download from Europa.  It's pretty straight forward.  I have
an XL spreadsheet for W&B and can send it along if you wish.

Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop.
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX  76208-5331
Cel: 817-992-1117
rlborger@mac.com

On Mar 14, 2013, at 7:00 AM, jonathanmilbank <jdmilbank@yahoo.co.uk> wrote:


What's different about doing the weight and balance operation for a trigear, 
compared
with a monowheel? I'm just approaching the end of a mono- to tri- conversion
and I've booked my inspector to come and do the business later this month.

He's done many weighings for many aircraft types and has all the necessary kit.
But I have the original instructions for this task in my old Europa Owners 
Manual
stating that the 0 datum is at the forward face of the cowling, whereas these
days the correct position is measured 29.25" forward from the rear edge of
the cowling joggle in the fuselage.

Apart from that we'll need to measure the stations of the wheel centres aft of
the 0 datum and he'll use all that info including weight measured at each wheel
to make his calculations.

All I'm asking you kind people out there is to warn me of any "gotchas" so that
I don't embarrass myself when he arrives from 60 miles away. Like what essential
items should I provide? I already have realised that there's no dedicated
jacking point near each main wheel axle. In the absence of any better 
suggestion,
I'm going to make a little steel bracket which bolts on through the spare
holes in the brake torque plate and has a welded projection for a trolley jack
to lift against. Is this how it's done?

Yours in eager anticipation. Jonathan


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=396230#396230



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