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Author Topic: Fuselage Doublers  (Read 742 times)

Offline david bailey

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Fuselage Doublers
« on: September 18, 2009, 12:54:24 PM »
I'm scratch building a full fuselage for a .25 size plane.  Does it make a difference in which direction the grain runs on the ply doublers?
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Offline Randy Powell

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Re: Fuselage Doublers
« Reply #1 on: September 18, 2009, 01:40:26 PM »
Good question. I usually use either 1/32 or 1/64 plywood for doublers (depending on nose structure) and have always ran the grain the same direction as the fuse sides.
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Offline minnesotamodeler

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Re: Fuselage Doublers
« Reply #2 on: September 18, 2009, 03:47:39 PM »
That has always seemed to be the common-sense approach to me.  Sure, plywood layers have alternating grains by definition, but has more plies running the direction that's on each face.  You're looking for longitudinal strength; that's the direction you should run the (exposed) grain..
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Offline Ward Van Duzer

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Re: Fuselage Doublers
« Reply #3 on: November 02, 2009, 08:18:58 AM »
Some would say that balsa doublers sandwiched with C/F veil will be more vibration absorbing than ply.


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