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Rekitus Maximus
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Re: Buzzard progress
Reply #9 - May 9th, 2021 at 9:26pm
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doing loops with a buzzard...

ok... but I will state I'd be more impressed with a roll from that bird...

I am an intuitive engineer
(sometimes things break ... sometimes not...)
The plans I remember  it has been a ...gah the years get by quick...
a while since I have seen the plans.   
for RC work I had decided the center panels needed reinforcing
of the main spar.
I had 5 layer 1/8 ply as the material of choice.
as that was how the 40 sized plane or two meter gliders I built were jointed.

What bugs me is that  I recall one glued the panels at the center
without cross the center joint members like a spar doubler.
I do not trust this memory.   
However...
in another  vague memory...
someone said doped silk was used like fiberglass.
a center stripe laid up much the same way. 

what I can't dredge up is the plan/model that was being discussed.
At an RC field, talking...old time design and building techniques
and some one's old silk covered large modified Free Flight plane.
the plane being marshaled to the flight line being the starting point...

next time don't fly so high.
parts come down quicker that way :--D


  

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Kaintuck
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Controled landings are
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Re: Buzzard progress
Reply #8 - May 9th, 2021 at 7:02am
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Victor, when you build the wing, add ply gussets across that joint between wings.....I lost a very nice buzzard and .29 motor....I was doing loops.....and the wing just sheered in two....I cut the motor to idle.....but it still became a ICBM.....took about 2 minutes for the wings to rotate to the ground....I used them again Roll Eyes
Marc
  
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Rekitus Maximus
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Re: Buzzard progress
Reply #7 - May 8th, 2021 at 1:28pm
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the buzzard was a design for a large engine on the nose.

I had decided I would push the prop/engine out a bit
on maple engine rails to reduce the amount of ballast needed.

at some point it will begin  to look like a balsa - stick type
not a buzzard.

I had decided the original designer could build truly light tails.
not a talent I have.

am looking forward to your posts and flights.

victor
  

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Kaintuck
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Re: Buzzard progress
Reply #6 - May 8th, 2021 at 6:11am
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Great story victor, yeah....me too....I love my engines to much! I can't imagine watching the record flight of 58min..... Shocked Shocked Shocked
This one is going electric, my flying buddy is supplying the motor and gear, I'm supplying the build. He plans on using it in a fall contest, timed motor run...I see she may need 2 pounds of nose weight Angry at this point.....the tail was built with micro servos in it, so we could remove/replace with fixed or DT tail.....someday we both make a crazy decision to try a ff Cheesy
Marc
  
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Rekitus Maximus
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Re: Buzzard progress
Reply #5 - May 7th, 2021 at 11:55pm
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oh the gussets.
oh the many gussets.

the buzzard bombshell was the first free flight bird I ever heard about.

the middle of the middle of the story was my brother came home and was
going on over a buddy he was helping build a big model airplane
... I recall being skeptical and saying so.
it was a free flight thing like the guillows kits
only a lot bigger.
then described it...

my mind had pretty much stopped at allowing a biiiiiig model  plane
like the buzzard loose.  Wha???

he was rattling on and I picked back up as he
complained at cutting out and gluing up many gussets.
Since then I have found buzzard plans.

that day a lot of new ideas and airplane models
were brought to my attention.

I am still unwilling to let an engine go on a free flight.

victor





  

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Sky9pilot
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Re: Buzzard progress
Reply #4 - May 7th, 2021 at 5:06pm
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She's a big girl...looking good!
  

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Kaintuck
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Re: Buzzard progress
Reply #3 - May 7th, 2021 at 8:16am
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Fuse is getting done...I'm on the 'fiddly parts' now, wing and LG attachments, windows, then one final sanding then cover.
The wing is straight forward build....just 72" of it to build! Tongue
Marc
  
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Re: Buzzard progress
Reply #2 - May 4th, 2021 at 10:55am
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Looking good. Smiley
  

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Kaintuck
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Re: Buzzard progress
Reply #1 - May 3rd, 2021 at 1:36pm
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Kaintuck
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Buzzard progress
May 2nd, 2021 at 5:40am
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I have progress to report...the tail feather are just about done. I servo mounted in the tail, just in case my buddy wants to FF this one...all I have to do is remove 2 nylon bolts, remove tail complete with RC RX, and replace with a foam elev and rudder.... Smiley
This one will be electric. Covering to start soon....then build a wing.
  
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