Freewing A-4 Skyhawk 80mm EDF Assembly & Flight Review

How hot is Heinemann’s Hot Rod?

I keep telling myself to scale back on the foam airplanes, but when the Freewing A-4 Skyhawk came up on pre-sale, I knew I had to have one!  The A-4 is a classic design that I’ve always appreciated.  In fact, I still remember seeing the Blue Angels fly A-4s back in the 80’s.  It was such an agile yet graceful airplane to watch fly, they will probably always be my favorite Blue Angel aircraft.  The F-18s have brute force, but it just doesn’t have the grace and maneuverability that the A-4 did.

If you follow this page on Facebook or Instagram, then you know how this one ends for me.  For those who and for full disclosure up front, this airplane flies really well when setup right, but I actually crashed the airplane twice in the process of making this review…mostly a result of my own error.  The first time was due to installing an already flown battery into the airplane.  It only took a couple laps before the fan quit and of course it was too low to get back to the runway.  Bummed, but not to be defeated the airplane was refinished with a few upgrades (which we’ll talk about).  It came out beautiful, I loved it!  Unfortunately, the CG moved further back than I anticipated and the airplane over rotated on the second takeoff and I didn’t have enough altitude to fully recover.  It’s fixable, though I’ve debated just buying a replacement instead…it’s currently hanging in my shop waiting in limbo.

With that being said, I still wanted to provide this review because as I mentioned, the airplane flies really well.  But, it’s an A-4 and there definitely some things to be aware of when setting it up for best success.

AIRCRAFT ASSEMBLY NOTES

The A-4 is a quick assembly requiring the aft fuselage section be glued on and then the dorsal, horizontal tails and wings bolted onto the airframe.  From there, it’s just a matter Continue reading

Foam Kit Bashing 101 Finale — Kfir Setup, Flight Review & Making Repairs

Fly, crash, repair…repeat…

Check out the full series of videos and articles at: thercgeek.com/kitbashing

Welcome to the final episode in our foam kit bashing series!  It was quite the journey getting here and I actually didn’t intend on it taking as long as it has to document the whole series, but life has been crazy with no signs of slowing down it seems (plus, I just started a new position at work!).  If you’ve just found this series, we have gone through and completely transformed a Freewing Mirage 2000 into an Isreali Kfir.  As a part of that, we covered the transformation process talking through the building methods in converting the airplane using balsa wood and foam, we’ve talked about painting and finishing and we’ve also covered how to make panel lines and add realistic weathering.  I hope that you guys have enjoyed the series and are geared up with some new techniques to try on your models!  To finish this series up, I thought it would be best done providing a little discussion on how the airplane flies in it’s new form as well as some of the things that were done in wrapping the airplane up and getting it tuned in the air.  Also, I had a little incident with the airplane at the Warbirds & Classics event which tore out the right main landing gear mount.  So, I thought it would be a good opportunity, now that we have this nice new airplane, to show how to make cosmetic repairs when they are needed as well.

RADIO SETUP

In doing all of the final setup for the airplane, I didn’t want to change too many things all at once since the airplane flew well in the Mirage 2000 configuration.  I knew however that I did want to change out the radio.  Airtronics has been my go-to radio for quite literally, decades (even had a sponsorship with them).  Though a good radio, it’s a system that’s just not supported in the US anymore and frankly, SANWA/Airtronics gave up on the airplane market years ago anyway.

I’ve been flying the Graupner MZ-24Pro for a while now and have found it to be a really Continue reading

Foam Kit Bashing 101 Ep 2 — The Mirage to Kfir Transformation

Birth of a “Lion Cub!”

Check out the full series of videos and articles at: thercgeek.com/kitbashing

Well, it’s been a little while since my tease at kit bashing a Freewing Mirage into an IAI Kfir (“Kfir” is Hebrew for “Lion Cub”).  We started with an assembly & flight review for the Freewing Mirage 2000 which out of the box flies awesome.  However, the Kfir is such an awesome looking airplane and with canards and a little extra wing area we’ll add in the bashing process, I can only imagine that the airplane will fly even better!  So, in this article, we’re covering the transformation process of turning this airplane into a Kfir and we’re using 3D printed parts as a part of that as well as employing some traditional building methods.  Through this whole process we will be employing the foam refinishing method I covered in our How to Refinish a Foam Warbird series.  I don’t plan to get into much detail about the foam prep work itself in this series as I want to focus on the kit bashing aspect to compliment the refinishing we did previously and use the next couple articles to go into more detail on painting, simple panel lines and weathering.

Now, one of the reasons that it’s been a little while is, in addition to of course a few distractions, is that I’ve been working out the 3D printed parts with a friend of mine.  CAD modeling takes time and there were a number of parts that we ended up making.  These include printing a new nose, the exhaust shroud and turkey feathers, the dorsal inlet, external wing tanks, lower ventral tank, and the afterburner cooling scoops and inlets on the fuselage.  As a whole, we printed a total of 23 individual pieces for the conversion (many of the parts required multiple pieces to be printed).

Continue reading

How to Refinish a Foam Warbird – Finale FMS P-51 Flight Review

“Lady Alice” P-51 Flight Review

Finishing up our FMS P-51 “Lady Alice” transformation, it’s only fitting to provide a flight review of the model (with info on how I set it up) along with some video!  In short the airplane fly’s awesome and looks incredible in the air in her “Lady Alice” coat of colors.  If you’re just catching this for the first time, you can catch my previous articles and videos on the whole foam warbird re-finishing process here.  Give it a shot, it’s worth the effort!

Aircraft Setup & CG

It took a couple flights to dial in so I thought I’d present what my final control throws and CG location converged to.  First off, to clarify the instructions, the recommended CG is 110mm as measured from the leading edge of the wing root (NOT the leading edge of the wing saddle).  This ultimately proved Continue reading

How to Refinish a Foam Warbird – Ep3 FMS RC P-51

Primer, sand, primer, sand…PAINT!

It’s time to finish off our FMS RC P-51 “Lady Alice” Transformation!  In this installment we’re doing our paint prep and painting.  Last time we covered filling in all of the oversized panel lines,  smoothing the airframe out and sealing it all in with multiple coats of polycrylic to provide a protective finish.  You can catch that post here; also, you can catch my assembly review and paint stripping methods here.  There’s much to cover, so let’s get to it!

PAINT PREPARATION

Primer, sand, repeat…
This seems all too familiar given our filler process, but the first step in preparing this airframe for paint is to lightly sand the polycrylic’d surfaces with some 180 grit sand paper.  This is mostly to Continue reading

Refinish a Foam Warbird – Ep2 FMS P-51

Fill, sand and repeat…

Continuing with refinishing our FMS P-51, in this installment we’re smoothing out the entire airframe including filling in all of the oversized panel lines.  From there we’re applying our protective coats of polycrylic which will provide our surface in which we can do our paint preparation.  If you missed my build review and paint stripping methods, you can catch that here.  Let’s get to it!

FILLER TIME!

It’s no secret, the panel lines on these foam warbirds are huge.  When I took on this project, I knew that was one of the first things I wanted to rectify.  The overall shape looks so good, smoothing out the finish would only make it look that much better.  So, enter Continue reading

How to Refinish a Foam Warbird – Ep1 FMS P-51

When did foam become the new balsa wood?!?

Ever since getting to ride in Ken Wagoners’ Lady Alice P-51, I’ve had to have a P-51 in my hangar and it has to be painted up as Lady Alice!  Anything I can do to relive that amazing experience…which of course would mostly consist of me pushing the airplane around my garage while making airplane noises!  I wouldn’t have it any other way!  If you missed my post and video from that day, you can read about it here.  Be sure to check the video too as it was a beautiful day for flying!

So, enter the FMS P-51.  I had been shopping around for a P-51 for a while and had been eyeing this foamy for some time.  A friend of mine is a master when it comes to foam and I’ve always wanted to use his technique on refinishing a foam airframe.  So, when the FMS P-51 came up on sale at MotionRC, I bit the bullet and picked one up.  Mostly, I liked the size (able to transport easily in one piece), the outline looked good and it had a cool scale 4-blade prop (though, I upgraded to something better and more scale).  Also, you get an all inclusive package with servos, motor and ESC.  However, it is indeed EPO foam, and though the finish is nice, you get big panel lines and some foam texture; nothing that can’t be remedied through some elbow grease and the right materials.  So over the next few weeks, I will be showing the method I’m using to completely refinish a foam warbird while also showing some of the upgrades done as well.

BUILD REVIEW

As mentioned, the FMS P-51 is Continue reading