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Old Aug 02, 2009, 07:25 PM
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2nude's Avatar
Belgium
Joined Aug 2006
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Scratchbuild something

I'm making something ...
I don't like working with plans so I make everything like I think it should be.

I bought a 90 mm edf from haoye models.
I took the motor out (4300Kv brushless inrunner) and mounted a 4,5 x 4,5 prop onto it!
Gave it a test while holding the motor and it gives ALOT of thrust.
I was too scared to go on at half throttle

So I want a plane for that motor.


This is what I have so far
:



LOOK AT MY MOTOR MOUNT:


It just clicks onto the plane. I can take it off and use it on other planes...
I think it's more then strong enough!

And a 60A esc:


I will use 3s 3300Mah 20C lipo's
Gonna give it huge skids so I can taxi/glide it over the grass.
I don't like to handlaunch it with a prop spinning at 50.000 rpm
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Old Aug 02, 2009, 07:40 PM
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Sky-walker's Avatar
Joined Jun 2005
1,025 Posts
I feel you need some canards ahead
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Old Aug 02, 2009, 07:57 PM
"On the Wing"
paulo810's Avatar
Ohio
Joined Jul 2006
757 Posts
Let me know when your Lego unclicks itself in the air

Very clever but you might want to bolt or screw it before you turn it loose. I had a motor suddenly shoot out in front of the plane by itself once. Fortunately, the plane fluttered down like a leaf. It took a passerby who witnessed it and I about 5 minutes to find the motor and prop in the tall grass. It was a stick mount and I forgot to screw the gearbox down.

It would have made an amusing video.
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Old Aug 02, 2009, 08:01 PM
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Belgium
Joined Aug 2006
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It'll not come loose, you'll see (I hope )
I try to film maiden flight.

And what do I have to loose ?
I still have lots of depron
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Old Aug 03, 2009, 06:03 AM
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Old Aug 03, 2009, 08:56 AM
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Old Aug 03, 2009, 12:24 PM
Yummy cheese
enduro_man996's Avatar
Earth
Joined Mar 2009
285 Posts
interestingly cool,

a 3300mah 3s battery may be a bit heavy for that amount of wing... from my experience. But with enough speed and the right cg it will propably fly.

I hand toss... and I still have 2 fingers left to control it with

http://www.rcgroups.com/forums/showthread.php?t=1025932

check out those vids
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Old Aug 03, 2009, 03:28 PM
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Belgium
Joined Aug 2006
44 Posts
Hey, very nice vids
Thanks !

I just tried mine, it was going like a rocket over the grass
but no lift, the nose too much down, can't get in the air.
So I added 2 small pieces of depron on the front of the 2 skids to get it a bit higher.

Tried again
It took off ! fast ! and then did some crazy ass stunts before I could get it on the ground again.
I think it was WAYYY to much tailheavy.
Will have to glue some parts again now ...

This was my funniest flight ever

2nd test soon ...
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Old Aug 03, 2009, 04:50 PM
Yummy cheese
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Earth
Joined Mar 2009
285 Posts
sounds like fun! haha...

honey hide the kids! here comes that infernal uncontrolable rocket again!
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