On 9/22/2020 4:01 PM, Mark Langford via KRnet wrote:
There are lots of ways to do this, and room for error in all of them.
We all have our favorites
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One concern in this discussion was "negative" numbers when using the
I did plumb bobs and the angle, and could find no discernable error
between the measurements. If the plane's not level, no method is going
to be accurate, plumb bobs included.
There are lots of ways to do this, and room for error in all of them.
We all have our favorites, so I'll just stick w
On 9/22/2020 3:31 PM, Flesner via KRnet wrote:
The example below ( if it comes through) shows how the big guys do it.
Fuselage station "0" is not even located on the fuselage.
I was afraid that
On 9/22/2020 1:08 PM, Mark Langford via KRnet wrote:
I'm not sure there's any real reduction in error possibiliy here, and
the main problem I see is that you're trying to measure with accuracy
to a point that you can't hang a tape measure on.
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In Kevin's case he needs a datum to establish engine mount length,
therefore his prop flange location is an unknown. Easier to use
firewall, LE, whatever is already there at this point.
Reading the replies got me thinking - Larry, or anybody else, is your
engine mounted with the thrustline rig
I KNEW this was going to start a topic discussion bearing on the likes of
nose wheel or tail wheel!
Here's my objection to using a prop flange or any other non-airframe
structural element; what happens when you CHANGE the whatever-it-is?
Make the engine mount longer, change your prop flange, use a
Larry Flesner wrote:
>> I would suggest some distance from the main gear
contact point (the axle) out ahead of any point of the aircraft. That
makes all numbers positive. <<
I'm not sure there's any real reduction in error possibiliy here, and
the main problem I see is that you're trying to
>
> Thanks to all for sharing W&B experience and spreadsheets, and
> advice/opinions. Heading to the shop now, I'll post my experience in a few
> days...
>
Kevin
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On 9/21/2020 8:04 PM, Jeff Scott via KRnet wrote:
However, it has become more common now days to project a point some fixed
distance forward from a fixed point on the aircraft.
For example, the datum might be 6' forward of the bottom of the front of the
firewall.
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