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I believe I first heard about Jim Ryan's Hellcat models on the
E-Flight list. Then the construction article was published in the July
97 issue of Model Airplane News. I have been a fan of 30's and
40's era planes since I was in high school so building a flying scale
models (I built hundreds of static models) of planes from that era was
something I wanted to do some day. I saved the magazine but I had
not decided which plane to model until I saw one of the kits for auction
on E-Bay. I won the auction for a good price and the kit was now
mine.
I had been flying Electric RC for a number of years and had built a
number of kits and had built balsa RC models from plans and from
scratch. When I reread the construction article, looked at the
plans and the kit; I could tell this was going to be a snap. Nice
foam wing cores, laser cut balsa, vacuum formed canopy. You build
the fuselage on a crutch, just slide the formers on the crutch and it
holds them in place while you add the stringers and then the skin then
you pull out the crutch. We are not talking planking here just 4
big 1/16th inch laser cut skins that wrap around the fuselage nicely.
There is a nose block to carve and tail fairings. My only
deviations from stock instructions were that I used epoxy on the wing
skins not 3M Super 77 (tm) and I used an 8 cell motor pack instead of 7
cells.
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I covered my Hellcat with blue Monokote (tm) and white Monokote (tm) trim
much like one Jim built for the construction article. I used a 6v
Speed 400 (tm) with the timing advance 5mm, a Castle Creations Pegasus
35 Electronic Speed Control (overkill), 8 Sanyo 600AE cells and a
Master Airscrew 6 x 4 prop. Two micro servo's and a full size receiver. With the extra cell
and epoxy I was one ounce over the target weight of 18 ounces.
For the first flight of a hand launched plane I always like to get a
test pilot. My buddy, Joe Colletti, can certainly be trusted with
the sticks for about any model. I don't trust anyone more than
myself for the throw.
Ready to go, Joe gave it full throttle and I did a running toss style hand launch that gives you some feel for how it
will fly before you commit to letting it go. It feels good so I let it
go, and it is away cleanly and climbing nicely. Joe gets it trimmed out and does a roll and a loop and a
few circuits and after 3 minutes I tell Joe to bring her in.
He
brings her around and lines up on the runway and it seems to be slowing
down nicely but when he tries to flare he said he just did not have anymore elevator...no harm done.
We decided to move the CG back a little. I charged up another pack and again with Joe on the
sticks...he guns the
throttle and this time I just chuck it. Off it goes into another
nice climb, Joe hands me the transmitter and I fly out the pack.
It sure does look nice, moves out pretty good to. I throttled back
and flew around some at reduced throttle and do some low passes for the
video camera.
I have since swapped the receiver for a smaller unit, added a pilot
to the cockpit and a flux ring to the motor. I tried other props
but have gone back to the Master Airscrew 6 x 4. I have also
learned that it needs a firm hand launch and a little time to build up
speed before you try to climb. It was a little tricky to get a
good hand launch while holding the transmitter but I have the technique
down now. The abuse of the poor launch with unplanned arrivals did
not hurt the plane much. I get lots of favorable comments from
fellow fliers. I am real happy with the plane.
Specifications
Kit manufacturer
Model
Wingspan
Length
Wing area
Weight
Wing loading
Motor
Battery
Controls
Aileron and elevator |
Ryan Aircraft (http://home.fuse.net/ryan/)
1/17th scale Grumman Hellcat F6F
30 inches
23 inches
165 Sq. inches
18 to 20 ounces
16 ounces per square foot
6v speed 400 motor
7 or 8 ea. 600AE or similar size and weight
cells
Throttle ( Mini ESC with BEC),
Micro servos |
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