A new Baby! - Flite Streak that is...

Well I finally finished this in record time with a little prodding from my Girlfriend. I plan on flying the wings off it this summer.

It's a Brodack Baby Flite Streak with a Cox Sure Start, 6x3 prop and a vintage Perfect #7 tank - 2/3 oz.
I had to make a custom radial mount to orient the fuel inlet/ cylinder for best perfromance.
Colors are Rust-oleum Sail Blue, Orange and White buffed out with "ICE" syn. polish (Auto store) This is good stuff! Just let your paint cure for a week before you use it.
Covering is an experiment that turned out Heavy, ugh! Total weight is a little over 7 oz. on my cheap scale. Monocote over open bays only then one coat of Zap resin and 1/2 oz. cloth over that. Fuse is resin and paint.
Control lines will be .009 braided/ fused fishing line, 14# test.

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2 Questions:

-What length line should I use for this combo - 35' or 40'?

-My handle spacing is set at 3 1/2" (Bellcrank 1 3/4") Good?

Hope it's just not a good looking rock on a string.

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i had one back in 1988 that had a black widow on the nose and i flew it on either 35' of .008 lines or 32' of .010 lines and that thing durn near screwed me into the ground.

Make up several line lengths from 35 to 45 feet. You will find one that you like best due to plane performance and lap times. As long as weight is around 10 Oz or less performance should be there. you might get a Galbreath head and Nelson plug from

www.kittingittogether.com

Better performance plus new plugs are cheaper than the Cox (if you can find them)

P.S. (in edit) Handle might be a little big, a smaller one will give smoother control. Problem with 1/2a planes is TOO MUCH control and the plane stalling. Need one so I'll have all 5 planes baby,junior,fullsize,combat,and ARF.

Carl

Thanks Carl,

One of the minor problems during build was the tip/ braces interfered with the leadout loc. shown on the plans. Things needed to be relieved and moved around slightly. Leadout holes needed to be elongated also.
I guess back in the day the L/o's were straight?

Doug, I'm not sure how those casted engines run. I have the extruded case. That prop sounds suitable for the initial flight, but I would downsize. I'm flying a Jr Lightning Streak which is almost identical in square inches to the Baby Flite Streak. I'm using the same size tank and the same backplate as yours but I got rid of the snorkle. I'm using a 5 1/4-4 Tornado with 35% nitro. We get terrific runs and consistency. In the event you want a bit more power, JKaerotech.com sells the Killer Bee backplate which is a direct swap and a bigger intake. The lines were using are 35' eyelet to eyelet. our handle spacing is 2 inches apart and ours is a very capable airplane. I also built the Baby Flite Streak but opted for a Big Mig .049. I love them both. I'm quite sure your going to like its flying ability. If I was to build another I would angle the gear more forward. I have mine as shown on the prints. This causes it to trip over itself on landings. Ken Cook

>SNIP

>It's a Brodack Baby Flite Streak with a Cox Sure Start, 6x3
>prop and a vintage Perfect #7 tank - 2/3 oz.
>I had to make a custom radial mount to orient the fuel inlet/
>cylinder for best perfromance.
>Colors are Rust-oleum Sail Blue, Orange and White buffed out
>with "ICE" syn. polish (Auto store) This is good
>stuff! Just let your paint cure for a week before you use it.
>
>Covering is an experiment that turned out Heavy, ugh! Total
>weight is a little over 7 oz. on my cheap scale. Monocote over
>open bays only then one coat of Zap resin and 1/2 oz. cloth
>over that. Fuse is resin and paint.
>Control lines will be .009 braided/ fused fishing line, 14#
>test.
>2 Questions:
>-What length line should I use for this combo - 35' or 40'?
>-My handle spacing is set at 3 1/2" (Bellcrank 1
>3/4") Good?
SNIP

It sounds like your fairly close on everything...yes, line length
can be 35-40'...and your prop size is close, a 6X3 is okay but a 5X3
will likely be better....Do Not use a 4" pitch prop. For sport,Stunt,
and 1/2A Combat(TDs) a 3" pitch works best; a 4" pitch is what's used
in 1/2A racing. Also use at least 15% nitro fuel.

I also think you should try a 2" line spacing at the handle and use
a maximum elevator deflection of 20 degrees each way; if you move the
CG back to being on the verge of hunting, you'll probably have to set
your elevator deflection closer to 15 degrees max.
Your Baby FS will fly just fine at 7 ozs. The Baby FS at 4.5-5ozs
turns surprisingly well and usually needs a bladder tank to keep from
starving in manuvers. If you build another Baby FS, try using a minimal
finish and the lightest covering(like Polyspan types) that you can,
and don't be too concerned with looks, but with quality construction.
Best of luck and fly it often.
Tony g

Handle spacing should be approximately the same as bellcrank size!

>Handle spacing should be approximately the same as bellcrank
>size!


no wonder all those early attempts at loops ended the life that sterling cub.


try 42' of 12 lb. test spiderwire. 39' in the wind.