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  #1  
Unread 02-08-23, 07:07 PM
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Jhogan0101 Jhogan0101 is offline
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Reasons for Gross Weight increases?

I was looking at gw for different 337 models.
Anyone know what the reason(s) for gw increases are?

Chart attached

https://postimg.cc/4m86nDV5
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  #2  
Unread 02-09-23, 09:28 AM
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Cglencross Cglencross is offline
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337e

Takeoff 4440
Laning 4400
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  #3  
Unread 02-09-23, 01:28 PM
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Just like most airframes, they always get heavier as new models are introduced, its rarely the other way. New features like soundproofing, longer props, redesigned cowlings, bigger engines, bigger brakes and tires, more seats, thicker windows, more avionics, AP systems, a/c systems, larger fuel tanks, the list goes on and on and on....

To a certain extent, gross weight can be manipulated by a manufacturer. The Air Force O2 was essentially a 337, but the military version had a 1000# higher GW at 5400 vs. 4400. Same engines. I wonder why?

Last edited by mshac : 02-09-23 at 01:33 PM.
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  #4  
Unread 02-11-23, 03:32 PM
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MIL at 5400 lbs

One of the boundaries to max gross weight is performance.

I have heard of them even MUCH heavier.

Years ago, a Vietnam era pilot who flew them told me, "they loaded them up so heavy, the single engine procedure was to bail out."

I can see the FAA having issues with putting that in a civilian pilot manual...
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