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Old May 15, 2011, 06:26 PM
CNC Cutter
birdofplay's Avatar
United States, IN, Indianapolis
Joined Dec 2005
8,762 Posts
I put a massive 68MM fan in a simple Eliworm F-15.

It pulled 60-80 amps and it flew LIKE A BRICK !
Sounded like a Kirby Vacuum on Steroids and was kinda scary
but
I only had one good flight when I forgot WHAT SIZE lipos I'd been using
and put some nice small and light ones in it.

Snappy performance but SHORT Flight as BOTH 2s1p paks
BLEW UP like AIR mattresses !

OK I'll got see whats up in that forum.
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Old May 15, 2011, 06:56 PM
Pusher jets rule!
crxmanpat's Avatar
Mesa, AZ
Joined Jan 2006
17,700 Posts
Parts are cut and assembly has begun. I should be finished up this coming week and maiden next weekend.

Pat
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Old May 15, 2011, 10:30 PM
Shut up and talk to me!!
Manila
Joined Aug 2006
286 Posts
Quote:
Originally Posted by crxmanpat View Post
Parts are cut and assembly has begun. I should be finished up this coming week and maiden next weekend.

Pat
Looking forward...

My build is stalled, waiting for parts....
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Old May 18, 2011, 09:39 PM
Registered User
Memphis Tennessee
Joined Apr 2010
81 Posts
great plane, thanks for the plans.
hs-85mg on the wing swing
grayson hobby 30amp esc
grayson hobby microjet V3
1500mah 25C lipo
AUW 13oz
Mk2 F14 (1 min 22 sec)
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Old May 21, 2011, 09:12 AM
Shut up and talk to me!!
Manila
Joined Aug 2006
286 Posts
Maidened the 75% this aftenoon and it was a blast. Since I used dollar three boards the vertical stab flutters during high speed flight. I'll put some CF rods to stiffen it a bit.

The HXT900 for the swing wing seems to hold up, but also feels like it is struggling sometimes. Anyways, like other comments rolls are slow when the wings are out.
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Old May 21, 2011, 05:16 PM
Pusher jets rule!
crxmanpat's Avatar
Mesa, AZ
Joined Jan 2006
17,700 Posts
My vertical stabs are 3mm depron. Maybe I'll add come CF strip in them to help them hold up. Haven't put them on yet, so I'll do it before installation.

Pat
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Old May 21, 2011, 10:27 PM
Registered User
Hampton, VA
Joined Mar 2009
1,294 Posts
Crxmanpat,

You do need CF flat or rod in the vert stabs. A trick I stumbled on, split a 3mm CF flat down the middle with an exacto knife. Then I dremel a slot 2mm deep. Works like a charm and you use half the CF.

Ksqm
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Old May 21, 2011, 10:57 PM
Shut up and talk to me!!
Manila
Joined Aug 2006
286 Posts
I just put a 1mm slit on the foam and slide a 3mmx1mm flat CF on it. Very similar to Pat's method of putting spars on his 18" profile jets. Quick and easy.
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Old May 21, 2011, 10:59 PM
Pusher jets rule!
crxmanpat's Avatar
Mesa, AZ
Joined Jan 2006
17,700 Posts
I'll just use my normal 1mmx3mm flat stick and cut a 2mm slot in the foam.

I think my tails are going to wind up solid black anyway, so you won't be able to see them.

Pat
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Old May 24, 2011, 05:47 AM
Registered User
UK, Sussex
Joined Jan 2009
568 Posts
Finally started on my build last night. Only had time to glue a few bits together, but everything fits very nicely - nice job birdofplay! I'm planning to use a paint scheme a little bit like this, for visibility:

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Old May 25, 2011, 01:16 AM
So many planes, So little foam
gearhead351's Avatar
USA, CA, Vista
Joined Jan 2011
16 Posts
I just have to say what a great plane this is! I can't wait to build one. just one question... I've read this thread all the way through and am gearing up to build one. while ordering servos from Grayson, I ran across the super mega jet motor combo. I ordered it (thinking that it was closer to a supersonic) but now im wondering if it is too big for the 100% version of this plane. if so, how big do you guys think id have to scale it?

http://www.graysonhobby.com/catalog/...2ce94117a3c6d5

above is the link to the combo. thanks to all, especially Maybz and BoP for all the hard work.

GH
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Old May 25, 2011, 01:58 AM
Pusher jets rule!
crxmanpat's Avatar
Mesa, AZ
Joined Jan 2006
17,700 Posts
With that motor you could go 125% on this plane.

Pat
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Old May 25, 2011, 07:48 AM
So many planes, So little foam
gearhead351's Avatar
USA, CA, Vista
Joined Jan 2011
16 Posts
thanks Pat, for the quick reply. you say I could, but do I have too? I usually like to keep em smaller. (I drive a car) that motor is pretty heavy so im wondering how that would affect balancing the cg. by the way, I just did the sr-71 you posted at 75% with DS foam. came out great. ill post video in that thread when I maiden it. thanks again for all the help.

GH
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Old May 25, 2011, 08:25 AM
Pusher jets rule!
crxmanpat's Avatar
Mesa, AZ
Joined Jan 2006
17,700 Posts
No, you could stay at the normal size. But that motor is overkill. Still OK though.

Pat
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Old May 25, 2011, 10:24 AM
CNC Cutter
birdofplay's Avatar
United States, IN, Indianapolis
Joined Dec 2005
8,762 Posts
Thanks for the comps DAVEE1 !

I think yours was delivered faster than my poor Canadian customers.
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