The Murphy Builders Site

Lets give it a go.Here's the numbers;Right rear 476 left rear 457
fronts together 291
34.5'' from mains to door post
72'' from fronts to door post
Total weight 1224
total weight on mains 933
Battery is now at 106 aft of door post
battery weighs 15.5 lbs
It will need to come ahead but by how much?
On 13-Feb-11, at 9:03 PM, Ken wrote:

Level the door frame. Be careful as I needed the rear amphib wheels at
least a foot high to level the door frame.

Drop a plumb bob from the leading edge of the wing.

Measure horizontal distance from plumb bob to front axles and from
plumb
bob to main wheel axles.

Take another measurement from the plumb bob to whatever you are using
for a datum if using something other than the leading edge. Personally
I'd use the leading edge unless MDRA can invent a legal piece of paper
that says otherwise. Makes the math easy. Makes the result easy to
interpret. Makes converting to wheels easy.

Weigh all wheels. If you don't have enough scales also level it left
to
right before every reading.

If you have those numbers give them to us and I'll walk you through
the
math if you like. Others might benefit from the exercise or at least
critique us ;)
I can use my numbers for seat, fuel tank, and baggage position or you
can measure those distances from the plumb bob as well.

Ken
(or was that not the problem?)


On 2/13/2011 8:06 PM, Rebecca Brownell wrote:

Maby somebody could walk me through how to figure it all out when
weighing it on amphibs.Can't get it!!!!!
Jason

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