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Old Jan 17, 2012, 12:24 PM
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jcdfrd's Avatar
USA, CA, Aromas
Joined Sep 2010
4,848 Posts
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Originally Posted by AIR SALLY View Post
move the fan back if you can ,or put the retract servo and valve in the wing shoulders and batt pack for Rx and servos under the tail pipe way in the back to cg that thing on 10s. i have 2 F-16s that were damaged by having to fwd of a C/G ,they would'nt rotate and ran off the runnway. im sure Tam will make sure you balance it correctly.
thanks AS your timing couldnt be better I'm just finishing up the retract control assembly and was looking at where I should put it. so your using the 4.25in cg location or does it need to go back further
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Old Jan 17, 2012, 04:20 PM
deltas are cool
AIR SALLY's Avatar
Tehachapi ,CA.
Joined Apr 2006
20,951 Posts
yeah what ever is recommended ,the guy that did my plane that i have had it nose heavy on 12S my son (C/N) set it up .we made the nose leg longer and mounted the servo/valve & Rx in the wing pockets and put the 1100 mah A-123 batt in the tail cone under the tail pipe ,we ran on 8s 5000 and 6000 batts flew awsome .im putting my jet fan 90mm in it .i modded the inlet adaptor duct to fit the jetfan shroud.
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Old Jan 17, 2012, 08:30 PM
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66 Posts
ok thanks guys for the info
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Old Jan 18, 2012, 12:58 AM
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bri6672's Avatar
San Diego
Joined Jul 2009
2,249 Posts
Ok guys I'm ready to mount my nacelle, soooo what size bolts do I need to mount the carbon mounts and stiffners, looks like I need 8 of those. I'm also wondering if I can get some reference points to where the nacelle needs to sit, how high and far back on the fuselage? Thanks for any help, it seems you only have one shot of getting it right. I know that I need about 5 degrees of down thrust and was wondering how you guys measured that?
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Old Jan 18, 2012, 03:40 AM
deltas are cool
AIR SALLY's Avatar
Tehachapi ,CA.
Joined Apr 2006
20,951 Posts
i use 10-32 size bolts and nuts & washers ...just need 4 back there and for the stiffeners there are 4 6-32 x1/8" bolts that go at the corners of the bottom wing bolt hatch on the fuse.(these came with the Nacelle) the spinner shoud be 1/2" to 3/4" away from the nub on the back of the fuse.keep the nacelle as low as you can so the exhust blows under the stab. look at some of the pics the c/f mount plate should be slightly above the hatch line at the rear of the plates there is a bit extra on them that can be trimed to match the hatch line .i sloted the aft hole in the c/f plate so i can adjust the thrust line.
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Old Jan 18, 2012, 04:09 PM
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Joined Sep 2010
66 Posts
rear section complete, HS645mg for elev ,HS82mg for rudders ,has anybody hysoled there elevator onto the vert stab bars, I did apply plywood doublers to the inside and to the outside so that the screw (1) on each side won't pull through when this beast flies,next step retracts.....either eflite 120 or springair 702 not sure yet better hurry and decide.......opinions from our ace falcon pilots would be appreciated ....Roger....Billy lol ....
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Old Jan 18, 2012, 04:23 PM
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here are the pics
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Old Jan 18, 2012, 06:03 PM
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BILLYDSRC's Avatar
OHIO
Joined Aug 2009
1,644 Posts
I like the eflight 120 but we have to wait a bit longer for the upgraded trunnions to be made Should be in 2 or 3 more weeks
Quote:
Originally Posted by bmwk1200s View Post
rear section complete, HS645mg for elev ,HS82mg for rudders ,has anybody hysoled there elevator onto the vert stab bars, I did apply plywood doublers to the inside and to the outside so that the screw (1) on each side won't pull through when this beast flies,next step retracts.....either eflite 120 or springair 702 not sure yet better hurry and decide.......opinions from our ace falcon pilots would be appreciated ....Roger....Billy lol ....
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Old Jan 18, 2012, 06:12 PM
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What length struts with eflight 120 what size wheels I don't need air brakes we have a beautiful grass and paved runway along side each other so plenty of room ,I like the looks of the offset front gear ?
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Old Jan 18, 2012, 06:12 PM
deltas are cool
AIR SALLY's Avatar
Tehachapi ,CA.
Joined Apr 2006
20,951 Posts
dont glue the stab ,i remove one boom attached to the wing to transport .just unscrew the one stab bolt pop it out of the tail and remove that wing (i remove the left wing )with the boom attached ,be carful to support the stab when it is hanging out there by it self.
i just got the Spring air 702's and 3/8" robostruts on mine ready to fly to see how they work.
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Old Jan 19, 2012, 05:32 AM
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Thanks AS I will wait for your post on the retracts
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Old Jan 19, 2012, 08:06 AM
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Arngeir Blakseth's Avatar
Molde, Norway
Joined Jan 2001
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Quote:
Originally Posted by bmwk1200s View Post
What length struts with eflight 120 what size wheels I don't need air brakes we have a beautiful grass and paved runway along side each other so plenty of room ,I like the looks of the offset front gear ?
I've answered these questions before, just look back some pages in this thread for my reply.
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Old Jan 19, 2012, 08:12 AM
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farmington hills mi.
Joined Sep 2006
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Quote:
Originally Posted by bmwk1200s View Post
What length struts with eflight 120 what size wheels I don't need air brakes we have a beautiful grass and paved runway along side each other so plenty of room ,I like the looks of the offset front gear ?
Check post 2164 on page 145 with what I did.
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Old Jan 19, 2012, 04:15 PM
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United States, NV, Las Vegas
Joined Oct 2010
308 Posts
Can you guys go verticle on takeoff? I'm just curious because some of you do static bench testing and I'm sure there are merits to it but I'm curious because static thrust depends a lot on the pitch of the propeller. Until the prop unloads the prop is just thrashing at the air, not really generating thrust. I don't know if it's the same with the edf fans.

My setup will allow me to go straight to verticle on takeoff, I haven't tried how far but I'm pretty sure it's unlimited.
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Old Jan 19, 2012, 04:23 PM
deltas are cool
AIR SALLY's Avatar
Tehachapi ,CA.
Joined Apr 2006
20,951 Posts
nope im about 3lbs heavier than my thrust .i can pull the gear up ,leave the flap half down and get a pretty good vertical climb out of her 70 degrees or so .
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