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Pumpkin drop event

FPV-2 Twin Boomer

Andre

Fly yes... land no.
Admin
#1
Trying something a little different.

Twin prop FPV bird.

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Reused the wing from the prev single motor plane.

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Borrowed the motors off the 48 plane so I'll have to re-use the wing and match it up with the FPV-1 fuselage.

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7x5 static rudders and 18x5 elevator (10x3 moveable area).

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Sub frame.

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Main fuselage is 24" long, while the booms are 20".

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10" props just fit. I'll most likely run 9x5 triple blades.

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I hope to test fly this thing on Sunday.
 

DDSFlyer

Senior Member
#3
Looks really good! It definitely looks tight with the 10" props, twin 3 bladders would look sweeter anyways. Gonna mount a pan and tilt too?
 

Andre

Fly yes... land no.
Admin
#4
The issue with 3 blades is the snow on landing is a PITA.

No pan/tilt yet. I want to get the basics down.

Not happy with the wing either. Not forward swept enough was the explanation I got for having CG problems.

So I'll have to decide if I go with 48 or 60 ;)

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Andre

Fly yes... land no.
Admin
#5
Tonight I took a tip from Stone Blue and cut into my white wing.
It is now has a 48" span and a better forward sweep.

This wing is from the FT-Racer. I've just added a centre section to push it out and add the sweep.

I still need to re-work the FPV pod. I want to be able swap that gear from plane to plane depending on what/where I'm flying.

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DDSFlyer

Senior Member
#6
That looks much better than that other wing you love. I actually was gonna suggest the forward sweep like their Specter plane wnphen you made your comments. Looking forward to the video!
 

DDSFlyer

Senior Member
#8
Ski's would be awesome! Did you see the ones that a kid sent Josh and the guys? The put them on the Super Cub, look pretty sweet. I think the flight vid was on their last Q&A video.
 

Andre

Fly yes... land no.
Admin
#9
I've been running the $3 from HK on my Cub with great success.

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I'll fab from up for this plane after I've done some test flights.
 

Andre

Fly yes... land no.
Admin
#10
To cold and windy to fly today.

So I spent some time finishing off the new plane.
I need to build the wiring harness and minwax/paint.

FPV pod, poster board and some final touches.
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Battery #1 up front.
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FPV Pod which allows me to move it from plane to plane.
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Lock in setup.
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Rear section with battery #2. This helps with the balance.
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Upside down.
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Andre

Fly yes... land no.
Admin
#11
I completed the wiring harness last night.

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Pretty simple job. 2 sections of wire joined in a X pattern.

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Neg from the 2 batteries feed the 2 esc. Ditto for the positive.

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I have a forward and rear battery on this plane. Really to help the balance and give me flight time.

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Andre

Fly yes... land no.
Admin
#13
1500g, minwaxed, skis added and balanced.

I need a taxi way. This is getting out of hand.
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Reused the skis from FPV-1 but made them beefier.
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Front ski is always a concern but seems to handle the test well.
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Switched the 9x5 since the 10x7 were rubbing.
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Rear skis.
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I did have to push the rear battery forward to balance the plane out.
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1500g fully loaded.
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Just need some paint and we are all set.
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Andre

Fly yes... land no.
Admin
#14
Maiden flight was a huge success today.
Was testing with the skis and well... they were removed on landing. Besides they slowed the plane down.

I did have to tape up the sub frame since when I'd land they'd get packed with snow.
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One of the big things I noticed in testing was how well the plane flew without the fpv pod but how adding the pod affected the balance.
Once I got the plane home and dried off I set the plane up without the fpv gear and with 2 batteries in the nose.
I then found the balance point on the wing. Which was way more forward then I'd through. Marked it.
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The two batteries are 2" back. Re-rigged all the wiring to work.
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Added some black to help. May need some other colours.
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Andre

Fly yes... land no.
Admin
#18
No lack of space in the plane but balance is key.
I'll know more today if the CG is better. I may still have to move the fpv gear around.

If all goes well today I'll be doing my first FPV flight.
 

Andre

Fly yes... land no.
Admin
#19
D'oh got some repairs to make.

Lost orientation and rolled it over.
Boo. I'll have to add some colours.


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The nose took the hit but I need to make some repairs to the wing as well.
Still not bad.
 

xuzme720

Dedicated foam bender
Mentor
#20
Not bad at all considering the depth of the lawn dart! And you just missed a tree! I'd say not too bad at all!
 
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