Graham,
Thank you so much for addressing my questions. Much appreciated.
Best,
Christoph
From: GRAHAM SINGLETON <grahamsingleton@btinternet.com<mailto:grahamsinglet
on@btinternet.com>>
ropa-list@matronics.com<mailto:europa-list@matronics.com>>
Date: Saturday, 7 September, 2013 8:36 PM
ist@matronics.com<mailto:europa-list@matronics.com>>
Subject: Re: Europa-List: Weight & Balance parameters requested: EUROPA CLA
SSIC TRI
Christoph
Don't be too confused by different data, (datums? don't sound right does it
?)
The critical issue is the relationship between Centre of Pressure and C of
G. The datum is an empirical position chosen for convenience of calculation
, so you need to refer your calculated CG to the datum used to calculate it
. I suggest you use the XS datum point, remember you need to be accurate wi
th distance measurement, (0.1 inch.)
I always use a spreadsheet, this can be entered in your iPad to check loadi
ng in the field. This works for any airplane. I simply enter the relevant
lengths which sometimes have a -ve sign if they are the other side of the d
atum. For another airplane just alter the measurements.
I hope that helps, please note I've had my nocturnal Scotch which might dil
ute quality of communication.
Graham
________________________________
From: Christoph Both <christoph.both@acadiau.ca<mailto:christoph.both@acadi
au.ca>>
ist@matronics.com<mailto:europa-list@matronics.com>>
Sent: Saturday, 7 September 2013, 23:09
Subject: Re: Europa-List: Weight & Balance parameters requested: EUROPA CLA
SSIC TRI
Dear Europa Community:
I am in the process of establishing Weight&Balance for my Europa Classic En
gine Frame Trigear.
The question of the firewall forward datum has come up as data produced fro
m preliminary measurements of weight and distance have not yet returned a s
atisfactory reference to the required 58'-62.5' CG envelope.
The Classic version I completed has the Classic Engine Mount fitted, this i
s why I referred to the Pilot Handbook from 1998. However, the handbook sho
ws only the MONO configuration. No reference to the recently more common z
ero station to be found at 29.75 inches forward from the backward firewall
juggle is made there. And I assume this newer, more precise measurement pro
bably applies to the XS motor mount and cowling which might have quite diff
erent dimensions. My Classic forward face of the cowling shows 29.0 inches
from that firewall juggle.
Am I missing something important here? Where exactly os the Zero Datum for
Classic Engine Mount Europas to be found?
Finally, I assume the nose wheel is supposed to point backwards towards the
tail when taking weight and distance measurements from station zero.
If there is an official documentation how to establish W&B for my configura
tion, I appreciate this.
Thank you.
Christoph Both
#223 Classic 912ULS
C-GPEL
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