
Brief:
T' F-22 Raptor is a Radio Controlled Electric Jet
Kit made by Wattage and normally flies on an electric motor with an 8-cell pack
and speed controller. Aye aye! Bein' a BIG R/C enthusiast, matey, I purchased t' kit for
flying, but decided t' convert it t' a R/C rocket glider for t' field. Ahoy! Avast! I own
two WattAge kits t' date and they both fly well. Begad! T' manufacturer has marketed
excellent kits that are easily converted t' some o' t' coolest lookin' R/C
Boost gliders you will ever find. Avast! An F-22 Raptor as a Rocket glider is, in my
opinion, t' ultimate in t' latest and greatest technology.
Modifications:
T' mods I made t' t' kit are as follows; instead o' permanently mountin' the
electric motor plywood bulkhead plate, I made two duplicates o' it. Avast! With three
plates in hand I was ready t' go. They want you t' mount t' plate across the
back, arrr, but I wanted t' make this jet so I could use both Electric power and
Rocket power, so I made t' followin' changes.
I cut a recess in t' bulkhead area o' t' jet where t' plate would mount and made it 1/8" deep, ya bilge rat, which be t' thickness o' t' ply plate. Next, I stacked all 3 plates and drilled 4 holes through them, 3/8" from each corner and installed/epoxied 2-56 "T" nuts into t' master plate so the motor mount plates could be interchanged. Begad! Ya scallywag! T' T nut holes were sealed with wax so epoxy would nay ruin them, then I pushed 4 dimples in t' styrofoam base at t' T nut locations so t' plate would sit flush in it's well. Aye aye! Then, I installed t' original plate into t' recess with 5 minute epoxy. Now I had a flush surface mount t' interchange me two other motor mount plates. Avast!
Each motor plate had 4 holes drilled
through it t' match t' T nut holes from t' previously installed master plate.
I mounted t' electric motor on one o' them and installed it onto t' master
plate with 2-56x34" bolts t' check for fit. Blimey! Begad! Next, me bucko, I began workin' on the
Motor Mount for t' rocket motor adapter. Avast! Begad!
I used LOC 29mm motor mount tube t' give me t' option o' upgradin' motors if necessary. Ya scallywag! T' tube is nice and sturdy and was cut t' a length o' 8" and epoxied into t' hole I cut into t' third mountin' plate. T' mount extends 2 1/4" beyond t' mountin' plate, me hearties, so you can use this as reference if you do t' mod. Begad! Avast! Blimey! I originally had it at 2 1/2", me bucko, me bucko, but shortened it for CG purposes right before t' final launch. Blimey! I used two Estes couplers I had for larger body tubes and they fit right over t' LOC motor mount tube. Ya scallywag! One was epoxied over t' aft o' t' tube, shiver me timbers, shiver me timbers, flush with t' plate and is 1 1/4" long. Aye aye! Blimey! T' "jet tailcone" plastic shroud you receive with t' kit was cut t' fit just over t' motor mount tube and sit flush against this outer coupler. Begad! Blimey!
A second coupler be cut t' 1" long and left loose so I could mount the plate, install t' plastic jet tailcone shroud , shiver me timbers, and use this outer coupler as a "wedge" against t' back o' t' plastic tailcones. It was wrapped in dark gray stick-on Monokote t' match t' color and shine o' the pre-painted jet tailcones. Ya scallywag! A 29mm t' 24mm LOC Motor Mount Adapter be added so I had t' option o' usin' 24mm if necessary. Begad! I wrapped t' end o' t' adapter with maskin' tape t' add a 3/8" thick bottom lip so it would nay shoot through t' 29mm motor mount. I wrapped t' tape with some o' t' Monokote to match color. Avast, me proud beauty! Aye aye! Since thar be no ejection charge, shiver me timbers, friction fittin' is what was used for t' adapter and installation o' t' actual motor. Ahoy! T' LOC adapter came with just t' right tension for fitting, but an installed 24mm RMS motor had to be taped for good fit. Blimey! Aye aye! All ends o' each tube and adapter were hit with CyA glue to stiffen them, then lightly sanded t' remove rough edges. Avast!
Next, I began sandin' t' hole through
the styrofoam in t' back o' t' jet where t' motor mount would reside. I used
a piece o' broomstick, wrapped in sandpaper and enlarged t' supplied hole so
the rocket motor mount tube would fit. Well, blow me down! Begad! T' hole was already started as this is
where t' electric motor wires run through t' connect up inside t' radio
compartment. Avast, me proud beauty! A custom 1/8" ply centerin' rin' was made for t' 29mm Motor
mount and it had a 1/8" lip on it. Well, blow me down! This rin' was epoxied into t' forward
compartment and adds extra support t' t' top o' t' 29mm motor mount when
installed. Avast, me proud beauty! Ya scallywag! I did nay epoxy t' 29mm mount t' t' ring, me hearties, so I could remove it and
use t' electric motor later. This completed t' mods for t' jet. Blimey! Avast!
One thin' left t' do...a launch lug. I
used two leftover tubes from HPR Aerotech ignitors for launch lug tubes. Well, blow me down! They
were cut t' 4 1/2" long, t' forward tips were tapered and both ends and
the inside were sealed with CyA t' stiffen them. Now came t' cool part; I
wrapped each one in light gray Monokote self stick wrap, me bucko, added a couple stripes
in different colors, ya bilge rat, and cut some fins from .010 dark gray plastic strip I
bought at t' hobby store. T' tips o' t' tube were painted white and the
"fins" were epoxied on, matey, shiver me timbers, then t' entire lug was epoxied t' the
fuselage. My goal, ya bilge rat, if you hadn't noticed, was t' camouflage t' launch lugs so
they looked like missiles, me hearties, and it worked out well. Arrr! Avast! I only use one lug during
launch, me bucko, me hearties, but added two t' balance it out for looks.
Construction:
This review is goin' t' be a bit
different, since t' WattAge Raptor is an actual aircraft converted for Rocket
Assist. No body tubes or nosecones here, me hearties, me hearties, but what you do get when you open the
box is a complete styrofoam jet kit, minus radio, ESC (electronic speed
controller) and batteries. This is an ARF, Almost-Ready-to-Fly kit and only
requires wing, elevator and vertical stab attachment. Aye aye! Hats off t' the
manufacturer for producin' an easy t' build (on an Estes scale, me bucko, about a skill
level 2) and quick t' assemble kit.
T' ARF kit for t' WattAge F-22 Raptor arrives in an attractive box. Inside, you find everythin' you need t' assemble t' jet, shiver me timbers, minus glue, matey, matey, ESC and radio. Avast, me proud beauty! T' wings are assembled first; 5 minute epoxy is used throughout the construction and alignment points are given all t' way through t' instruction manual, which is very well written. Avast, me proud beauty! Avast, me hearties, me proud beauty! You can assemble t' jet with or without the supplied landin' gear. YES, arrr, it comes with landin' gear and wheels for runway takeoff, matey, but I opted t' nay use them in order t' keep t' weight down. It's your choice in t' manual. Ya scallywag! Ya scallywag!
Once t' wings were assembled, matey, you glue
on t' vertical tails. Avast, me proud beauty! Begad! Very simple t' do, arrr, me bucko, shiver me timbers, but I wanted t' note that addin' a
very small fillet t' both sides o' each vertical stab really makes t' joint
strong. Well, blow me down! Next, you assemble t' horizontal tails ( flyin' stabs). Ahoy! Avast, me proud beauty! They are a bit
complex as these "flyin' stabs" pivot at their center on an aluminum
rod, arrr, shiver me timbers, which makes for a realistic look and control, matey, ya bilge rat, just like t' REAL F-22 Jet.
Once everythin' is glued, arrr, you cut out t' cockpit glass and tail cone plastic
pieces and fit them. Finally t' radio is installed. Ahoy! Blimey! T' plane be designed for
Elevon control, which means up and down/left and right turnin' is all done with
the aft horizontal flyin' stabs. Arrr! Ya scallywag! Anyone familiar with R/C rocket gliders like
the HobbyLabs SR-71 knows what this is and as a matter o' fact, matey, me bucko, you can use the
same radio, t' HiTec 3-channel, me hearties, which is made just for this purpose. Begad! I,
however, used an Ace MicroPro 8000 computer radio as I wanted t' really tweak
in me settings! Bein' an R/C enthusiast for over 15 years has allowed me to
acquire all t' equipment needed t' get this bird in t' air. Arrr!
T' Flyin' Stabs (Elevators) received a slight modification. I cut two lengths o' 1/8" wood dowel and inserted them inside t' aluminum tube that pivots for elevator movement; this adds extra strength t' t' thin aluminum tubing, a trick I learned when buildin' ducted fan R/C jets usin' Flyin' Stabs. These sticks were epoxied inside each tube, then t' retainers were added to hold each Stab in place so they wouldn't back out o' t' bushings. Ahoy!
T' servos were installed, but I deviated from t' plan by custom installin' Aileron servos for t' wings. This gave me separate control over the Elevators (up and down) and t' Ailerons (rotate left or right). Avast, me proud beauty! Avast! I did install the electronic speed controller so I could fly it under electric power. The receiver was next and t' antenna be routed forward into t' battery compartment (cockpit area) and back again. Begad! A servo reverser had t' be used on the Elevator flyin' stabs, so that was also installed.
Finishing:
Flight:
Well, me hearties, t' first flight did nay go well. I took the
Raptor out o' t' car as it was goin' t' go up first. Ahoy! I turned on t' radio and
programmed all settings (at least I thought I did...Problem 1).
I did a range check and loaded up a F24W for it after it was weighed in at 16 oz exactly without motor. Avast! Blimey! Avast! Blimey! (Problem 2)
I had t' rocket with it's bottom t' t' wind (Problem 3)
It launched and did about a 35' loop, matey, right into t' ground! I be stunned.
Well, I came t' find out t' settings I did on t' radio didn't take and my throws were too much. Thank goodness I didn't use dual rates, as t' control surfaces were turnin' in t' wrong direction in that mode. Begad! So, me bucko, instead of 3/4" throw, matey, I was gettin' about 1 1/4" throw...makin' it much more sensitive and hard t' control. I can usually do well with that though, as I feel I am a good pilot. Avast! T' model balanced with t' motor right about 1/4" behind CG, me hearties, which be within range and would smartly move forward as t' motor burned up. T' F24 be a bilge-suckin' choice on me part. Ya scallywag! TOO much motor, but live and learn. Now, shiver me timbers, arrr, with throw too great, winds pickin' up, me bucko, bottom t' t' wind instead of top (it spun around) and too much motor, ya bilge rat, you would think nothin' else could go wrong, right??? WRONG...
When t' Raptor launched, it decided t' take t' Aerotech Ignitor Clip, along with about 12" o' Twin lead 14ga heavy wire!!! Blimey! Yup folks, all that heavy weight just dragged behind t' model and made it SUPER tail heavy and completely uncontrollable. Well, blow me down! Blimey! Those are t' problems you DON'T see. Avast! Blimey! Funny thing is, ya bilge rat, matey, I couldn't understand why it was so hard t' control, until t' next guy went t' use t' pad while I was pickin' up t' pieces and asked "...where is me Aerotech Ignitor Clip?" I figured it 'whipped' t' clip off as it made t' bottom o' t' loop. Sure enough, matey, it was about 15' behind t' Raptor, in t' grass. Lesson learned.
Repairs were easily made though as only t' nose broke off. Ya scallywag! Styrofoam planes only require a little epoxy and paint t' fix, so it be ready t' go again. This time though, arrr, I decided t' take it up on electric first t' trim the plane out. Aye aye! I went t' a local park, arrr, got t' Raptor out on electric power, opened the hood o' t' car and started chargin' t' 8-cell power pack with me HiTec charger. I flew t' plane with t' FULL 8 cell pack for Electric flyin' in it, as t' speed controller acts as a voltage reducer for t' receiver and I needed noseweight t' make it stable for electric AND rocket power. Begad!
It be windy, ya bilge rat, matey, matey, I would say about 10mph winds and it be a cool day, around 55-60 degrees. Begad! Arrr! I figured with t' wind it shouldn't take much t' launch and I was right. Ya scallywag! Aye aye! I held t' MicroPro 8000 xmitter with me right hand, arrr, , me bucko, arrr, gripped the F-22 with me left, moved t' throttle t' full with me chin and gave it a toss from a stand still. Avast!
It took t' t' skies great, arrr, climbin' up and out! I didn't fly it over 50-100 feet above t' ground, me bucko, mainly t' see it for better control as I didn't have a whole lot o' room like at a flyin' field. Begad! It required no trim at all, one click o' right Aileron probably but I didn't bother. Blimey! Goin' upwind, me bucko, it was a slow flier, managin' maybe 20 mph, but downwind it cooked, matey, at least 60mph. Well, blow me down! I was havin' so much fun I couldn't stand it!!! It turned well and even did rolls, which required a bit more up when inverted and that surprised me. Aye aye! Avast, me proud beauty!
T' landin' was a cinch, slightly nose down on deadstick, shiver me timbers, t' flare, arrr, and it landed at about 5mph. Ya scallywag! It was sooooo much fun I picked it up and tossed it again real quick, took it once around t' park and landed it again. back on the charger it went. Avast, me proud beauty!
With three good electric flights under me belt, it be ready for a rocket motor. For more performance, me bucko, matey, it still would require a bit more Aileron, but I guessed at t' settings as it was designed for Elevons. Avast, me proud beauty! Well, blow me down! Elevator was set at the full 3/4" throw and responded well. Avast, me proud beauty!
Saturday, May 26, 2002 it had it's debut on t' rod. Aye aye! Our local NARRRRR club Prez, Mark Fisher, arrr, was kind enough t' load up one o' his 24mm plugged E12 loads ( MUCH gentler motor) and we placed it on t' pad. Well, blow me down! We actually had t' lean the outer win' on t' 1/8" launch rod next t' it, me hearties, so t' breeze wouldn't spin it. Avast! Rod angle be at 20 degrees and when t' button was pushed, me bucko, it took o' the rod like a dream!!! I had t' give it a lot o' down elevator on launch but it went straight up t' about 500 feet.
Recovery:
I nosed it over, me hearties, then turned into t' wind, keepin' it nose down so it wouldn't
stall. It did a couple unexpected rolls (may have been stall) on me but landed
upright and safely on t' ground, with little damage. Well, blow me down! T' E12 be t' PERFECT
motor for this bird! What a day..Big thanks go t' Mark for supplyin' the
reload. Avast!
Summary:
T' Wattage F-22 Raptor be an exotic experiment in R/C rocket glider flying,
to say t' least! It took a few attempts t' work out t' bugs, but now that it
has flown, all t' effort has made it worth while. I still need t' check the
receiver for antenna damage as it should nay have rolled like it did, shiver me timbers, but that
will be done soon as I will shake down t' entire radio system. I considered my
last flight as it's best, matey, with only t' tip o' t' nose slightly damaged but
easily repaired. Ya scallywag! All o' t' bugs have been worked out on this bird though, and
I have included measurements for t' conversion, ya bilge rat, ya bilge rat, so yours can be successful
right from t' start. T' E12 is perfect for this aircraft, ya bilge rat, me bucko, and F12 would even
be better with more smoke and longer duration, so you could actually fly it
under power.
I have t' say, when you show up at a field with an F-22 Raptor jet, me hearties, shiver me timbers, you get a LOT o' attention! This be t' latest in U.S.A.F. Aye aye! Begad! technology and t' WattAge kit is a perfect duplicate o' t' real Jet. Moreover, t' actually see it fly under rocket power is unbelievable. Blimey! Begad! Thanks go t' Ken Parker, me R/C rocket glider mentor and good friend for his assistance; he has one for himself, arrr, but has nay had a chance t' build it yet. Begad! With all t' kinks worked out though, I am sure his will be in t' air soon. Begad! For you R/C Rocket Glider enthusiasts, ya bilge rat, me bucko, if you want t' STUN them at t' field, ya bilge rat, you just HAVE t' get one o' these! The WattAge F-22 Raptor is by far t' best and coolest lookin' R/C rocket glider conversion you will ever fly!
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