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  • July 20, 2017, 06:36:49 AM

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Author Topic: F7F 1/A profile  (Read 356 times)

Offline Gary Dowler

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F7F 1/A profile
« on: June 29, 2017, 02:25:37 AM »
Started this in 1982.  Never quite finished it.  It done now and after sitting in a closet or hanging from a wall in various houses for 35 years its finally done and had a engine run test.  Ready for its first flight.
Profanity is the crutch of the illiterate mind


Offline john vlna

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Re: F7F 1/A profile
« Reply #1 on: June 29, 2017, 06:14:57 AM »
Looks great for being 35, good luck on your maiden voyage, better late than never.

Offline john e. holliday

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Re: F7F 1/A profile
« Reply #2 on: June 29, 2017, 09:54:17 AM »
I await the flight reports.  Looks good for its age. H^^
I was always taught to respect my elders, but it keeps getting harder to find one.
Today I broke my personal record for most consecutive days lived.
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
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Offline Gary Dowler

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Re: F7F 1/A profile
« Reply #3 on: June 29, 2017, 10:45:26 AM »
Fly it shall. One half of the stab/elev had been broken off and needed replacement. Only thing left is a mild warp in the outer panel of the inboard wing. Might have to open the wing up to remove it. Tried steaming it out but this didn't do much with it all sealed up.
It never got done because I was building ahead of my understanding. Wanted to maintain clean profile for both sides so I mounted both engines (Cox 049's in firewall mounts) on the inner side of the nacelles. This meant, as I figured out, that the outboard engine would never have gotten fuel.  Pulled these off and mounted a pair of tanked 049's (goldenbees by any other name) and rebalanced it. Was originally made by patterning it from the plans of a rubber powered kit for the dimensions. Built up wing, slab fuselage.
It might fly, it might die, but it will be glorious either way! 
Profanity is the crutch of the illiterate mind

Offline Steve Berry

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Re: F7F 1/A profile
« Reply #4 on: June 30, 2017, 08:40:40 AM »
Good looking plane.  Well done.

Only suggestion, and this is something that I myself "might" do, would be to turn the cylinders horizontal on the engines.  Leave the tanks as they are, but rotate the crankcase & cylinders to horizontal to provide a "cleaner" looking profile.  Off hand, I can't remember if that would have any affect on the engine runs, but I think it would look neat, especially while flying.

Just my 2.

Offline john e. holliday

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Re: F7F 1/A profile
« Reply #5 on: June 30, 2017, 09:49:34 AM »
The cylinders help protect needle valve in case of inverted landing.
I was always taught to respect my elders, but it keeps getting harder to find one.
Today I broke my personal record for most consecutive days lived.
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530

Offline john vlna

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Re: F7F 1/A profile
« Reply #6 on: June 30, 2017, 07:44:52 PM »
The engines will run fine that way, as Doc says just don't land upside down

Offline Jim Matos

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Re: F7F 1/A profile
« Reply #7 on: July 16, 2017, 06:36:47 PM »
This is cool! Are the flaps linked, or are the built for static adjustments?
What plans were used?
What's the wingspan?

Thanks,

Offline Tim Wescott

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Re: F7F 1/A profile
« Reply #8 on: July 16, 2017, 07:34:19 PM »
So, has it flown?
AMA 64232

The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline Trostle

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Re: F7F 1/A profile
« Reply #9 on: July 16, 2017, 10:55:36 PM »
I would suggest to use less rudder offset.  No more than 1/8" to 3/16" is all that is needed.  That tall rudder and with the offset shown in the pictures, the plane will want to roll left, more than the rudder offset will help to keep the nose yawing right.  not a good combination.

Keith.

Offline Gary Dowler

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Re: F7F 1/A profile
« Reply #10 on: July 17, 2017, 01:23:55 AM »
I think you are right. When I built it in the early 80's I had little experience with such things. I'll be altering it before it flies.
Profanity is the crutch of the illiterate mind


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