Cox PT-19's blog View Details
Posted by Cox PT-19 | Feb 21, 2020 @ 03:47 PM | 2,244 Views
Back in the 1980's (or maybe 90's...it's all starting to meld), my flying bud Neal and I got a couple of the newly released Cox R/C PT-19's. Made of molded foam, these are good-looking planes, with moderate performance from it's .049 Ranger (coincidentally, also the name of the full scale PT's engine).

We DID experience problems with getting the CG correct...even moving all the gear as far forward as we could, the model was still a bit tail-heavy, and would snap inverted if it's pilot got too frisky with pitch input. A chunk of lead ballast fixed the problem, but gave the .049 still more weight to drag through the sky.

I finally decided to "make the ballast work", and bolted a Medallion RC .09 to it's snout, spaced forward by a block of ply, and fed by a metal wedge tank suspended behind the firewall. The .09 was the exhaust band type, and worked really well...helping with the balance problem, AND turning the PT into a mean little ankle biter.

Neal followed suit...though his may have been powered by an O.S. .10, and we put on many impromptu Sunday pylon races, or dog fights (it was often difficult to tell the difference), with both planes amazingly surviving our crazy flying.

I'd like to get my old relic going for this year's S.M.A.L.L., again with it's .09 engine. The foam has survived in great shape, but the harder plastic parts are turning into cookie crumbs and will take some shoring up to be airworthy.
Posted by Cox PT-19 | Feb 04, 2020 @ 03:03 PM | 6,272 Views
Got the heat turned up in the shop on this cold, damp day.

The subject of my attention, for the moment, is the faithful Jetco Shark that flew it's heart out last Saturday.

It got a little Monokote patching, and some cleaning/oiling of it's old Enya .19 engine.

As I mentioned earlier, this is the same engine that flew in my Uncle Wayne's Shark in the 1960's. The .19 was on the large side for the .15-sized kit, but we flew what we had back then. It later powered another Shark I built in 1975, which was literally worn out and busted up when it hit the ground at a friend's farm in the 1980's. The carcass of this one now graces the entrance of my shop.

So this is the Enya's third ride in the nose of the Jecto kit. Below are some photos of us flying Sharks back in the day. Great memories, and in particular, the day flying bud Kevin and I smacked a couple Sharks together over Olmsted's ball park.

We'd painted them in very similar schemes/colors...maybe TOO similar as we forgot who was flying what...with our two Sharks doing a model airplane version of JAWS.

Kevin's plane rose up into mine, getting holes punched through it's left wing by my Shark's landing gear. I pulled up, unhooking the two models, but with my prop walking down the chord of Kevin's wing, chopping up his flap, and then cutting off most of his left stabilizer and elevator for good measure.

I got off easy...with a couple punctures and a broken prop, my Shark glided to the ground. Kevin's Shark,...Continue Reading
Posted by Cox PT-19 | Feb 02, 2020 @ 08:15 PM | 3,855 Views
First flight (for me) of a steel cable dog in 2020!

My Jetco "Shark" got in 6 full flights, and came home in one, attractive chunk!

No flying video/photos on this outing...maybe next time!!!
Posted by Cox PT-19 | Jan 29, 2020 @ 01:29 AM | 14,060 Views
Mud Dabber is a Sig Mk I "Kadet" I built in the early 1980's. It's name came from the way my grandma pronounced "mud dauber"...the type of wasp-like bugs that build their nests from mud "dabs" they pack through the air.

Drawing inspiration from Don McGovern's "Boondock Bird" design from the 1960's, Mud Dabber was intended to fly from any ole handy patch of dirt (or mud, if need be).

About the time of it's completion, the factory where I worked was sponsoring a "Run/Ride-a-Thon" for a charity, and I decided to make my contribution by way of having a "Fly-a-Thon", with Mud Dabber following the route.

A friend and fellow flyer donated the use of his pick-up, with another good friend manning the camera.

On the evening of the Run-a-Thon, we launched Mud Dabber from the parking lot of the factory, and set out on our adventure. In those great old "pre-terrorist" days, I never gave a thought to asking permission from the plant management, or the state park where we would be landing, and just went our free spirit way.

I'd equipped Mud Dabber with an auxiliary fuel tank under it's right wing, and intended to make the 9 mile flight non-stop. During test flights, the tank worked just fine, as long as I DID NOT try to throttle down Mud Dabber's O.S. 35FP engine. For reasons too nerdy to explain here, it had to stay at, or near, full power to keep running.

As we hit out, it quickly became obvious that Mud Dabber...Continue Reading
Posted by Cox PT-19 | Jan 22, 2020 @ 04:53 PM | 8,587 Views
Another afternoon spent working on "piddly stuff" with the Jr. Skylark. The servos were dry-fitted (and may get shuffled around) inside the fuse.

The original Skylark was designed NOT to have an elevator, so one was installed. The nacelles are also shaped and finished. Everything got sanded and I'm done with that stuff!

I'm also down to my last precious tube of Ambroid Airplane Cement! The end of an era!
Posted by Cox PT-19 | Jan 21, 2020 @ 01:24 AM | 10,096 Views
So, the second .020 adapted to it's backplate nicely, putting in a bunch of time on it's stand. Started easy, and settled into a 1/2 hour run after a little needle work.

Now it's time to turn to the Jr. Skylark.
Posted by Cox PT-19 | Jan 20, 2020 @ 08:34 PM | 9,095 Views
After several false recoveries, it appears that I AM actually doing better...health-wise...so-much-so that I cranked up the heat out in the shop for a break-in of Matt's "Black Lynx" .049 (THANK YOU ALL VERY MUCH AGAIN!!!)), along with my first test run of Bernie's .020 Pee Wee Backplate Assembly.

The Black Lynx was started up on Sig Champion 25% fuel, turning a 5-3 gray. I ran it for over 1/2 hour nonstop with refuels on the run. leaning it out to peak and back as the time passed. Toward the last 5 minutes, it was peaking in the mid 17k's, with good needle valve response.

While it may get some photo ops with the 2m B.O.T. before too long, it'll probably end up in my Cox Viper for this year's S.M.A.L.L. Fly-Ins.

THEN....I assembled an .020 with the new backplate I got from Bernie. I chose one of my healthier .020's, hoping for as little hassle as possible, and am proud to say it all went well.

The upper mounting holes are REAL snug for my #2 socket head servo screws, and I wanted a washer of some sort to keep them from digging into the plastic. So, I used a drill motor and Dremel to first, turn down the flange under the socket, and also rounded the flats of a couple #2 machine nuts.

Drilled out, the machine nuts became thick washers, and fit into the backplate's top two grooves pretty nicely. I know this all seems like a lot of fuss, and I'm totally prepared for someone to show me an embarrassingly easier way to do this. The little sucker looks good to me now though!

It started up after little coaxing, fired up and ran steadily...also for a 1/2 hour +. I'd lost my light, and was too lazy to set up an led lamp for the tach, but it was sounding like it was in it's zone.

Now, on to assemble another .020 and it's backplate for installation on my slowly moving Carl Goldberg Skylark project.
Posted by Cox PT-19 | Dec 16, 2019 @ 12:29 PM | 14,361 Views
So, my great friend, fellow Breezy Hill Flyer, musician, craftsman, veteran, and all-around-great-guy, Billy Lang made me a "model of a model", my beloved Lazy Bee!

Intended as a Christmas Tree ornament, it will instead spend it's days atop it's own personal rotating display stand next to my computer!

THANK YOU AND MERRY CHRISTMAS BILLY!!!!!!!!!!
Posted by Cox PT-19 | Nov 30, 2019 @ 12:41 PM | 2,609 Views
So, the Breezy Hill Flyers' "Black Fly-Day" turned out to be

"Who is Nutty Enough to Fly Their Model Airplanes in Cold, Damp Air While Everybody Else is Staying Snug and Warm in Their Homes Day"

Well, guess who!
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Thomas and I showed up on the hill, greeted by some definitely NON-inspirational weather. Low, gray clouds were tracking by, with a cold mist hanging in the air, but the rain was holding off, so the toys got dragged out.

Thomas brought his REALLY nice Lazy Bee, along with his big-wheeled "Kingfisher". I had my bedraggled, 25 year-old Lazy Bee and Mavic Drone.

As usual, the drone took video with no photos of it's self being taken, but also as usual, the Lazy Bee got Go Pros rubber-banded around it's airframe, with a bunch of stills pulled from the footage.

We got in several flights on each, with some photos and video going on, 'till finally packing it all in and heading home.

Still a good time and good visit. We're now looking forward to the winter swap meets, along with the New Year's Day and Frozen Finger Fun-Flys!...Continue Reading
Posted by Cox PT-19 | Nov 24, 2019 @ 09:32 AM | 7,952 Views
----From another thread about installing external fuel tank for .049 power in a Sterling Minnie Mambo------------

Little Traveler was, at first, going to make fuel stops along the way on it's flight for St. Jude Children's Research Hospital, using a Cox "Dragonfly" .049, as that was about the biggest engine-mounted tank offered. When a flying buddy heard about the project, and my trying to determine suitable landing/fueling sites along the way, he said, "Wuhl Hell! Why don't you just do it non-stop?" Wuhl Hell!!! Why Not!!!???

So, Little Traveler got some internal gutting, with a 4 oz Sullivan Tank tuned on it's side and shoved into it's cramped nose space. Like you, I just HAD to have a nose block (like my original Minnie) because, I thought it needed a nose block to suit my barely negotiable nostalgic demands.

I got a "Red Scorpion" .049 from Bernie at Cox International, and made a ply spacer to move it's prop out past the nose (the nose HAD to retain it's original shape---nostalgia again), and to also get the engine away from the firewall far enough to allow some "curl" in the silicone fuel line to keep it from kinking as it looped around to the brass tube epoxied in the ply next to the engine.

When fueling, I pull the plug from the internal line and pump fuel in 'till it comes out of the external vent/overflow tube. I do have to pull Little Traveler's wing to do this, but once filled, the Minnie is good for 30 minutes...Continue Reading
Posted by Cox PT-19 | Nov 18, 2019 @ 11:54 AM | 2,787 Views
So, got Rene's Medallion .049 on the stand this morning, and it's looking good.

Prop: Cox Black 5 x 3
Fuel: Sig 25%

Top end was in the mid-14k's, bottom end at about 6.5k.

Thank you again Rene!
Posted by Cox PT-19 | Nov 14, 2019 @ 04:35 PM | 2,632 Views
Thanks to the extreme generosity of one of my flying buds over on the Cox Engine Forum, my currently un-throttled Carl Goldberg "Ranger 42" will be cruising next summer's S.M.A.L.L. Skys behind a vintage "barrel throttle" Medallion .049.

Medallions are sort of an "interim" engine between the good-natured reedies and high-compression Tee Dee engines, and like the Tee Dees, are beam-mounted and will only run in one direction.

The Ranger presently has a Medallion .049 that runs wide open 'till it's fuel is gone and then glides in for a landing. This engine will allow low/slow passes down the flightline, along with the option to land at will (flying bud Tony will once again be asked to step up for these as I shoot some video/photos of the moment!).

Gonna be a fun summer!
Thanks Rene !!!!!!
Posted by Cox PT-19 | Nov 14, 2019 @ 12:36 PM | 2,803 Views
Parts of an article by Don McGovern from his "All Wet" column in the August 1968 issue of Flying Models.

Mr. McGovern was, and is still, one of my Model Airplane Heroes, and descriptive writings of his many seaplane adventures in the briny backwaters of New Jersey created images in my mind that exist to this day.

This is one of my favorites because of the bunch of photos included.
Posted by Cox PT-19 | Nov 10, 2019 @ 12:38 PM | 1,641 Views
So, a nice morning out in the shop. Got the parts for the Skylark's second engine from Bernie yesterday, and used today's "coffee high" to assemble the Tee Dee .020.

Got in a couple good test runs...no leaks, and all the parts seem to be getting along with each other.

Now, unless I again change my mind, the engines for the Skylark are chosen, tested, and ready to boost it up through the ether!!!!!!

Back to balsa chopping!
Posted by Cox PT-19 | Nov 08, 2019 @ 11:37 PM | 1,727 Views
Flying bud, Tony, had asked about the run times with the Skylark's future .020 powerplants when using the new metal combination fuel tank / engine mounts.

After running the Tee Dee .020, I decided to also run an .010 that was handy, and these are the times I got. Both engines had to do some "cobweb flushing", and as expected, they ran longer with each attempt.

I think the .010 ought to get 3 minutes if mounted on an airframe.

The tank / mounts are beautiful little works of art, available from:

https://coxengines.ca/ and
http://www.exmodelengines.com/home.php?cat=264
Posted by Cox PT-19 | Nov 08, 2019 @ 08:02 AM | 1,713 Views
Another day out in the shop: The Goldberg Jr. Skylark continues to draw attention...this time from my carving knife. Yesterday afternoon, it's nose, fuse corners, and wing leading edges were victims of my deft wielding of a long-blade Exacto. The thing is really starting to develop a personality. It's wing needs a little more trimming/sanding, and one of it's Tee Dee .020's tack-glued in place for inspiration.

Uncle Wayne's 51 year-old "Scout" control line stunter got some old-school hinge stitching to support it's ancient cloth elevator hinges. This plane is still in good, flyable shape, with a healthy Cox "Golden Bee" on it's nose.
Posted by Cox PT-19 | Nov 05, 2019 @ 08:48 AM | 1,651 Views
I've managed to meet several of my Heroes in full-scale and model aviation, but many had their time and passed on before I ever knew about them. Luckily, my stacks of old model airplane magazines provide a bridge to long-gone years. and introduce me to people I couldn't have appreciated had I met them as a kid.

Stephens Calhoun Smith 3rd was a Creative Force in the 1950's and early 60's. Like several of my current cronies, he seemed to have the energy of an otter chasing fun. Besides designing and building untold numbers of model airplanes, his wildly diverse artwork appeared on the front pages of many magazines, like the December 1952 Air Trails shown below. His talents in photography ranged from individual projects to event articles that helped fill the magazines that carried his paintings on their covers.

Like most of his kind, he pursued BUNCHES of other sports, like Ice Boat Racing, and who knows what else.

My only direct contact with Cal Smith is the reduced-size copy I built of his "Blunderbus" Free Flight design. Powered by a Cox Tee Dee .010, my tiny replica has only a single servo to guide it around the sky, and was an "Everyday Flyer" back in the day.

It also received high marks from my little sheltie, Chelsea, who was allowed to chase it on it's many flights since the .010 didn't pose a serious threat to her long snoot.

Cox Tee Dee .010 on a Cal Smith "Blunderbus" Free Flight Replica (3 min 9 sec)


So, it's...Continue Reading
Posted by Cox PT-19 | Nov 04, 2019 @ 07:33 AM | 3,027 Views
So some times, the search is over almost before it begins. I barely got into the place before my eyes fell upon this beautiful, barrel throttled Medallion .09RC that looks like it just fell out of it's box.

Listed as an .049, I initially got excited about adding a throttled engine to my Goldberg Ranger, but it'll do just as nicely on my Jetco Navigator (if I ever get around to restoring it).






Then, on the same table, I spotted this!


...Continue Reading
Posted by Cox PT-19 | Jul 31, 2019 @ 09:00 AM | 2,547 Views
Another of my "S.M.A.L.L. Prep" models...slated for this year's 30th Anniversary S.M.A.L.L. Fly-In this October.

Carl Goldberg's Ranger 42 was a "some day model" back in my early teens. It never happened back then, but the little foam R/C plane lurked around in my brain for a few decades, until I finally got one in reasonable condition from Ebay.

Many were flown with Cox .09's and larger engines, but I wanted to use an un-throttled Medallion .049, to give myself a slow-flying retro model, and it's happily worked out that way.

So, it will join Lil' Punkin, Little Traveler, and several others in our Arkansas Pilgrimage this Fall !!!

Carl Goldberg Ranger 42's 1st Flights (3 min 39 sec)

Posted by Cox PT-19 | Jul 22, 2019 @ 02:28 PM | 3,001 Views
I've had this account for some time, but haven't made any entries, mostly from be swamped with involvement in my club and other pursuits. I've decided to post some notes, photos and videos from my Facebook, along with others as this develops.

All statements are my own, about my own experience with various miniature flying machines. I claim no expertise in any area, other than maybe at having fun...at which, I feel I'm pretty much a "Fun Ninja"...I have a blast with this stuff.

Because of the audience I anticipated on Facebook, many of these posts are geared toward new flyers or people with interest, but limited or no experience in the hobby.

I'll try to respond to comments in a reasonable amount of time, but there may be some stretches where I don't get back right away.

We'll see how all this goes...
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Earlier in the month, I'd posted a few photos on my Facebook page of this little "Storage Locker Rescue" I'd named Lil' Punkin.

I'd been waiting for another nice evening to get some footage of the whole plane from it's top camera (having so much fun, I forgot to do it on that day), but haven't had a chance to try it.

So...I crunched together some footage of what I had.

Lil' Punkin is a rudder-only model---it has no elevator to control pitch, so has to be carefully balanced and trimmed for a gradual climb while the engine is running, then transition to a smooth glide when the engine quits.

MANY early R/C planes were flown in this configuration before more advanced radios became cheap enough for a modeler to afford.

Lil' Punkin Flying Late in the Day (4 min 13 sec)