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Unread 07-15-20, 06:11 PM
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Quote:
Originally Posted by JAG View Post
When I measured my points, I came up with:
A (front face of Fwd Firewall to main wheel centers) = 87.8 "
B (Nose Wheel center to main wheel center) = 93.7 "
I took a great deal of time doing the measurements using a plumb bob, tape on the floor, large straight edges, etc. Still easy to mess it up though...

[...]

Hope this helps.

Jeff
It helps tremendously. All I know at this point is that it's very likely wrong. Knowing where it's likely wrong will help me sleep at night. I figured the linear measurements were off - there was no effort made to record a precision of less than one inch. Also, the the weight of my front tire was recorded as 500.0 lbs, exactly. Is it possible? Yes, but I think it's more likely they were using a substandard scale with a precision of 10.0 lbs. Combine that with substandard measurement and you have my W&B.

What REALLY shocks me is that this has been the reference W&B for 30+ years! Either
a) nobody checked c.g. or
b) nobody thought having two 170 lb pilots throw the plane out of c.g. was unusual!
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