1:5.5 Grumman A6A, A6E, A6F, EA6A & KA6D
11-18-2020, 02:29 PM
#1
"Look Of The Real Thing"
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Join Date: Dec 2005
Location: Houston, TX
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1:5.5 Grumman A6A, A6E, A6F, EA6A & KA6D
From ashes...
...............
To once again, "Flight Of The Intruder"
3 piece fuse: Pickup-van-or suv transport. 64" long center section. 119.6" length x 120" w/s assembled. Twin JetFan 110 12s = 42# static thrust.
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Last edited by Flite-Metal; 07-20-2021 at 10:13 PM.
12-06-2020, 08:54 PM
#2
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JetFan 110
Is anyone in WattFlyer interested in large scale EDF jets? I am surprised there have been "0" posts. Is there only interest in foam jets?
Last edited by Flite-Metal; 02-20-2021 at 05:37 PM.
06-25-2021, 08:19 PM
#4
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Using the Edge "F" 160 HV esc on each of our JetFan 110mm 700-98-840 on 12S with a goal of 11 minute flight time...what would be the optimum battery @ ? C rate? I am considering use of 10,000 mah~12,000 mah.
At this level there have been conflicting claims to the best this or that, as best. I am frustrated in not finding real world data for this level of product. At the root of this is of course the A6's...but I will be powering two B-47E's with the same setup.
I will compete with both. 11 minutes is the ultimate goal in that during scale contests there are multiple contestants in the air at the same time. Each took off and land in sequence performing a flight routine typically consuming 6 to 8 minutes.
The reason for the 11 minute goal is if a competitor attempting to land "ahead" of me were to end up doing a pin point landing in the middle of the runway. Yes, judicious throttle management is built into my flight routine working down from altitude performing maneuvers making best use of gravity.
In spite of well planned flight routines, things happen outside everyone's best choice of maneuvers against a maximum of 15 minutes with respect to the rules. In reality all maneuvers are typically performed under eight minutes takeoff to landing roll out.
Any and all recommendations are welcomed...YouTube witnessing preferred... ;^)
06-25-2021, 09:41 PM
#5
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Join Date: Feb 2006
Location: Crawfordville, FL
Posts: 7,039
Ed,
Going to be tough finding anything that will give you 11 minutes of flight time on EDF. Even flight times of 6 minutes are the holy grail right now. About the only way to get there will be to fly truly scale speeds as EDFs are amp hogs. Unfortunately I don't have any recommendations for you. Good luck in your search!
Going to be tough finding anything that will give you 11 minutes of flight time on EDF. Even flight times of 6 minutes are the holy grail right now. About the only way to get there will be to fly truly scale speeds as EDFs are amp hogs. Unfortunately I don't have any recommendations for you. Good luck in your search!
06-25-2021, 10:06 PM
#6
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Managing Time = Managing Throttle
Originally Posted by crxmanpat
Ed, Going to be tough finding anything that will give you 11 minutes of flight time on EDF. Even flight times of 6 minutes are the holy grail right now. About the only way to get there will be to fly truly scale speeds as EDFs are amp hogs. Unfortunately I don't have any recommendations for you. Good luck in your search!
09-13-2021, 05:20 PM
#8
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Location: Houston, TX
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A6 spoilerons:
I shot video of the 32 year old "Flight Of The Intruder" A6 spoilerons...working just as it was just installed yesterday. Futaba should be proud ;^) Its interesting to note the spoileron was held in place with a strip of adhesive tape...yes, adhesive tape.
Note in the pic below, in the lower right, you see the turned up edge of the tape. My 6's spoileron is held in place with acrylic adhesive backed Tyvek spanning the front of the flap bay and bottom side of spoileron. Tyvek is thin but superior in strength to cellophane tape
The movie 6 was not designed to last longer than filming the short sequences of the movie.
Click pic 2C
I shot video of the 32 year old "Flight Of The Intruder" A6 spoilerons...working just as it was just installed yesterday. Futaba should be proud ;^) Its interesting to note the spoileron was held in place with a strip of adhesive tape...yes, adhesive tape.
Note in the pic below, in the lower right, you see the turned up edge of the tape. My 6's spoileron is held in place with acrylic adhesive backed Tyvek spanning the front of the flap bay and bottom side of spoileron. Tyvek is thin but superior in strength to cellophane tape
The movie 6 was not designed to last longer than filming the short sequences of the movie.Click pic 2C
07-09-2022, 12:53 AM
#11
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Flying Stab Cradle
Currently consummed creating the flying stab cradle. Will post pix as the prototype assembly is more than its current twelve parts. The cradle has a pair of 45kg servos, one per stab with individual pivot shafts and a push-pull rudder servo.
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Last edited by Flite-Metal; 07-09-2022 at 01:10 AM.
08-07-2022, 09:31 PM
#12
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Stab & Nose Gear Cradles
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A lay-up of two weights of Airex infused foam in the last 22 inches of the mold provided an exceptionally light weight but super strong gauge for width and depth of the flying stab cradle. As always, the concern was for balance without excessive all-up-weight on this exceptionally long fuselage. The bottom access hatch is immediately below center of stab rotation. This affords easy access for adjustment of stab and rudder positioning without removing servo cradle.
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The vertical centerline of the fuselage is stradled with a pair of stainless steel business form rulers to measure width required for the cradle. Mounting rails above and below the cradle's servo plates provide fixture to the fuselage sides. Measurements shown are 50% of the available widths in the taper. Flying stab center of rotation is 16 3/4 inches from rear end of fuselage.
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Last edited by Flite-Metal; 08-09-2022 at 01:14 PM.
08-31-2022, 12:40 PM
#13
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Closing In On Protype Final Assembly
Backbone access hatch:
Next week we assemble the final (we hope) former configurations with mounting rails for retract mains, EDF, and nose retract. One of the critical elements as we reach final assembly is shoe horning the battery tray...something rarely considered a critical issue. With our 12s2p configuration 8 batteries positioned in relatively cool space is not easy though one would be incline to think a 115.6"w/s x 119" long fiberglass fuselage has plenty of space.
Because of the exceptionally long tail moment everything is located at virtual CG.
..................................
Next week we assemble the final (we hope) former configurations with mounting rails for retract mains, EDF, and nose retract. One of the critical elements as we reach final assembly is shoe horning the battery tray...something rarely considered a critical issue. With our 12s2p configuration 8 batteries positioned in relatively cool space is not easy though one would be incline to think a 115.6"w/s x 119" long fiberglass fuselage has plenty of space.
Because of the exceptionally long tail moment everything is located at virtual CG.
..................................
