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Author Topic: Maybe it will Fly  (Read 650 times)

Joe Just

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Maybe it will Fly
« on: February 10, 2011, 04:56:52 PM »
I start this thread to take away interest from Bob Reeve's great .15 profile planes.  They are simply great..mine, well to be honest I built them from left over parts from last years run of .15 Carrier kits.  The result is a stubby, somewhat looking Zero.  I expect that it will not be a big time winner, but if it does fly and I dont break it I will bring it to Brodak's where one and all can laugh at it along with me.

Joe
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Joe Just

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Re: Maybe it will Fly
« Reply #1 on: February 10, 2011, 05:05:08 PM »
More great picures of the .15 Zero!

Joe

PS Even my wife says it kind of looks too small. I'm sure she is refering to the Zero!
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Offline Bob Reeves

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Re: Maybe it will Fly
« Reply #2 on: February 10, 2011, 05:25:06 PM »
Bet it was a whole lot easier to build  y1

What prop you running on the FP-15, it is an FP isn't it?
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Joe Just

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Re: Maybe it will Fly
« Reply #3 on: February 10, 2011, 07:00:36 PM »
Bob, It is a FP. Prop shown is a 7 x 5.  Time will tell on the size though.  Also I may make the take inboard as well.
Joe
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Offline john vlna

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Re: Maybe it will Fly
« Reply #4 on: February 10, 2011, 07:33:10 PM »
Joe,
nice plane, hope springs enternal that we'll get you to fly at Brodak's
John
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Offline bill bischoff

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Re: Maybe it will Fly
« Reply #5 on: February 10, 2011, 08:32:03 PM »
Joe, I would advise against putting the tank on the inboard side, as it would go hopelessly rich in flight. I would recommend putting the tank down lower, and moving it outboard so the pickup tube is about 1/2" outboard of the needle valve. You will have to mount the tank on standoffs, but that will leave room for the throttle pushrod. You will also probably have to notch into the wing a bit, but on a foam wing it's no problem.

If this one works out, you can always build a full-fuselage version for next year!
 
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Offline Mike Anderson

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Re: Maybe it will Fly
« Reply #6 on: February 11, 2011, 06:54:57 AM »
Quote from: Joe  Just on February 10, 2011, 05:05:08 PM
More great picures of the .15 Zero!

Joe

PS Even my wife says it kind of looks too small. I'm sure she is refering to the Zero!

I suppose you could call it "Less than Zero",   (the plane I mean   :-[)

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Mike@   AMA 10086
Central Iowa

Offline Bill Little

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Re: Maybe it will Fly
« Reply #7 on: February 11, 2011, 07:25:58 AM »
hi Joe,

Looks fine to me! 

Here's your story: "This is a "Top Secret" version of the late war Zero especially designed as raw materials and manufacturing plants were running out for the Japanese.  Clipped wings to do away with wing folding mechanisms which sped up production, and, along with the fuselage shortened to allow more planes to be stored on deck."

Big bear
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Big Bear <><

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James Hylton Motorsports/NASCAR/ARCA

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Trying to get by

Joe Just

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Re: Maybe it will Fly
« Reply #8 on: February 11, 2011, 08:41:53 AM »
Quote from: bill bischoff on February 10, 2011, 08:32:03 PM
Joe, I would advise against putting the tank on the inboard side, as it would go hopelessly rich in flight. I would recommend putting the tank down lower, and moving it outboard so the pickup tube is about 1/2" outboard of the needle valve. You will have to mount the tank on standoffs, but that will leave room for the throttle pushrod. You will also probably have to notch into the wing a bit, but on a foam wing it's no problem.

If this one works out, you can always build a full-fuselage version for next year!
 

Bill, While I have always admired your stuff and realize your expertise dwarfs mine, i have never had any problems with an inboard tank on other profiles, including my profile stunters.  Many years ago Dan Rutherford developed a slow combat plane he called the "Cheater Slow" with inboard tank. It however was banned for some reason.  since then I have often used inboard tanks.  Attached is a picture of one just usage.  Now, i have been thinking of changing what the "Zero" pictures show.  If I find that the inboard tank is not working as I plan I will of course tell one and all here.
Joe
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Offline Bob Reeves

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Re: Maybe it will Fly
« Reply #9 on: February 11, 2011, 09:26:38 AM »
I also have had good luck with inboard tanks but have not tried one without also using muffler pressure. From reading the rules on the Brodak site muffler pressure is now OK in 15 and Sportsman (hope this is true).

Now when I was messing with the TT 36 and stock carb I discovered that small piece of 1/8 aluminum about 1/4 X 1/2 attached to a muffler lug with just enough sticking out over the exhaust opening to be able to install a pressure fitting gave me enough "Muffler pressure" to make the stock TT carb work. Last year M.P. wasn't allowed in sportsman so I abandoned the idea and went with a Perry carb.

Anyway, this might also work for an inboard mounted tank so I would say Go For It....
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Offline john vlna

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Re: Maybe it will Fly
« Reply #10 on: February 11, 2011, 11:02:16 AM »
Bob, Joe,

You can use muffler pressure in 15 and sportsman at Brodaks. It has always been so since I became event director. AMA profile does not allow it.

Bill is generally correct though and inboard tank does tend to go rich. Back when they were legal in slow combat we used to squeeze them to keep the engine running before launch because the needle was set so lean in the air. If you have a small enough venturi you may not notice a big difference. Pressure seems to help but on my Profile scale B-10 I have the tanks inboard with pressure and they drive me nuts. The B-10 is scheduled for glow to electric conversion.

 As far as the tank being high, I think that is easier to to get right. If you can't lower it just watch out for it flooding just sitting there. Fuel flows down hill.

Planning to bring it to PA this Jun?
john
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