|Jun 07, 2003, 11:55 PM|
Fan Fold Fun Jet
OK, here it is, the FFFJ. Just went out to the school parking lot and flew it under the lights. Man I should have took it to Lakehurst today and flew it in the blimp hanger (see indoor thread for that amazing place).
Anyway can you say hit the nail on the head. At full throttle nose down and rip jet style. Throttle back to 3/8, YES, 3/8 throttle and cruise around indoor style. Didn't try any stunts just because I forgot, did alot of high speed ripping, cool, followed by floating around.
6 1/8" root 5 3/4" tip
22" long fuse
Vertical stab same Frog but will only have 1.5" rudder
Horizontal stab 10" span Frog stab
Distance between wing trailing edge and H.Stab 5 1/2"
Beveled bottom of wing trailing edge to point
Beveled and rounded top of leading edge of wing
1200 E-tex 2 cell
EDF 50B 2030x5 fan
GWS Pico gear
GWS 300E speed control
|Jun 08, 2003, 12:54 AM|
nice jet thatovalguy.
do you think one of these might help?
and if i could build one of those i'd try using my etec 700 to save weight...and maybe not use a rudder servo....
heehee...i'm already thinking of how i'd modify mine and you haven't even let us know what u'll be doing planwise.
|Jun 08, 2003, 01:06 AM|
You could use a coffee cup to make the main part of the nacell, and I have seen elmers glue nozels on the end of the motor, you could turn one out of foam to make it super light though. Would ducting it out the rear help with thrust at all?
|Jun 08, 2003, 05:41 AM|
Joined Jun 2002
Guyaneze/Depdog - The nacelle kit does apparently help from what I remember of the tests here when it came out. Most especially the round intake lip and the tail cone.
Also from what I remember reading these little fan units won't benefit from ducting past the unit. Something to do with them being high thrust low velocity or something like that.
If your interested the Jet forum has a wealth of information on EDF50 applications.
thatovalguy - Smart, I often wondered about trying ever since Q&EFI published the plans to the FanJet trainer last year. They have a stand way way off scale Vampire this month, similar construction style. I got sidetracked this week into building the FSK F-16 with an EDF50 instead.
|Jun 08, 2003, 08:56 AM|
From the limited tests I did with the motor A inlet duct will help and is in the works right now, but it does not need it, outlet hurts performance. I was flying it around at 3/8 throttle last night with no problem. High speed, well if was fast enough to eat up the parking lot in no time, felt like I was always turning. So I am going to put one on but does it need it, no.
Thanks all for the nice words. I've always wanted a ducted fan sense going to a fan fly in out in Indiana and seeing Bob Violet doing unlimited verticals with his, but was always to cheap to buy. This might not do the vertical thing but it does meet the want.
Last edited by Thatovalguy; Jun 08, 2003 at 09:04 AM.
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