E-flite Carbon-Z T-28 Giant Scale Warbird by Horizon - Review - RC Groups

E-flite Carbon-Z T-28 Giant Scale Warbird by Horizon - Review

This BNF T-28 Warbird is AS3X Stabilized and includes Retracts and Flaps

Splash

Introduction

E-flite Carbon-Z T-28
Wingspan:78 in
Length:63 in
Wing Area:1073 sq in
Weight:12 lb
Wing Loading:25.76 oz/sq ft
Radio:Minimum 6 Channel (PNP)
Servos:6 - 25 gm MG Servos 1 - 16 gm MG Servo
Battery:22.2V 5000mAh 30C 6S LiPo
Motor:E-flite 60 Outrunner - 500 kV
ESC:70 Amp
Prop:14.75x10 2-Blade
Receiver:Spektrum AR636 AS3X (BNF)
Transmitter:Spektrum Dx18 G2
Manufacturer:E-flite
Available From:Horizon Hobby through your local hobby shop
Street Price:$569.99

The North American T-28 Trojan has always held a special place in my heart. I know it may sound like heresy, but it's even my favorite Warbird (apologies to Mustang lovers). As you can see from my Blog, I've been flying and modifying Horizon T-28's for a while now, but I've always wanted a larger, more scale style version. I have a large shop, a pickup truck, and even an enclosed utility trailer, so building space and transportation were not much of an issue. It boiled down to the building time and total expense of building a giant scale model that kept me from flying the plane of my dreams. The cost of a typical Ply and Balsa Warbird ARF seemed reasonable enough at about $400, but when you added in the motor, ESC, retracts, and servos, the price quickly soared close to $1000. My heart and my pocketbook had been at an impasse for some time, and it looked like my dream of a larger T-28 was going to stay a dream for a long time.

Well, I'd pretty much given up and moved on when I saw the Horizon announcement of the new Carbon-Z T-28. Initially I was a little put off by the fact that it was a foamy, but the more I thought about it, the more I wanted one. The price was certainly a bargain compared to other large ARFs, and the scale looks were stunning.

It took a while, but things finally worked out and the UPS driver just left a HUGE box on my doorstep. I can't wait to get it open and get started on my BIG T-28.

First Look

Kit Contents

  • Z-Foam airframe with Carbon-Z reinforcement
  • Fuselage with huge cockpit/battery hatch
  • Two-piece wing with pre-hinged ailerons, flaps, and retracts
  • Pre-hinged elevator and rudder
  • Tricycle electric retractable landing gear (installed)
  • Two-piece main gear doors
  • E-flite 60 BL Outrunner Motor
  • 70 Amp ESC
  • 7 metal-gear servos (installed)
  • AS3X 6-channel receiver (BNF)
  • Cowl with dummy radial engine
  • Decorative spinner and 14.75x10 prop
  • 20-Page illustrated instruction manual

Required Parts

  • Minimum 6-channel radio system
  • 5000 mAh 6-cell 30C Lipo battery
  • 2.0mm, 2.5mm, and 3mm Hex head drivers or wrenches
  • Small Phillips screwdriver

Parts Supplied by Horizon for this Review

For this review, Horizon Hobby supplied an E-flite 5000 mAh 30C Lipo battery.

Assembly

The 20-page illustrated Instruction Manual is very good. There are numerous line drawings and detailed assembly instructions for each step. There was a 1-page addendum that detailed the installation of the motor and the propeller/spinner assembly. The Manual is well written for intermediate ARF builders. The entire assembly process consists of installing 12 bolts, 3 screws, and plugging in two servo extensions - 1 hour assembly tops. However, as good as the E-flite manual was, there were still a few hints I'd like to add to help with the building process.

Fuselage

The assembly process began with the fuselage. First step was to mount the vertical stab and rudder assembly to the fuselage. The rudder and elevator servos plugged into servo extensions at the base of the rudder housing in the fuselage. It was a tight fit for my fat fingers as I made sure the wire colors matched, and the connectors were carefully tucked in the bottom of the housing before I bolted the rudder in place. The long assembly bolt was installed in the front.

Next up was the horizontal stabs and elevators. The stabs are designed to be removable for transport or storage and they are mounted on a black joiner tube. I found that the recess in the stab was deeper than half the length of the joiner tube and the tube could easily be installed off center and deeper in one stab than in the other. To make sure the joiner was properly centered, I put a small piece of tape 9" from one end of the tube and inserted the tube into one stab all the way up to that tape. I then put a small drop of CA on the tube to hold it in place in that stab half. I knew that the tube was now permanently attached to the stab, but it would not prevent the removal of the stab for storage. While inserting the stabs into the fuselage recess, I found that they were a very tight fit and it took much more force than I anticipated to get the stab to fully seat in the fuselage. Once the halves were fully seated, two small bolts were installed to hold them in place.

Wing

The assembly process continued with the wing. Once again I found that joiner pockets were deeper that half the length of the joiner rods, so I carefully marked the center point of each rod. By watching the marks, the rods could be kept centered as the wings were pushed together.

There were two "Y-harnesses" supplied for the wing assembly - one for the ailerons, and one for the flaps. The harness for the gear leads was already connected to the receiver and the ends were secured inside the fuselage. Since I planned to remove the wing for storage after each flying session, I added 3" servo extensions to the receiver for the aileron and the flap connections. These extensions made it much easier to plug and unplug the harnesses.

The last assembly process was the motor/cowl installation. Once the motor was mounted, I plugged the motor leads into the ESC and verified proper motor rotation. Much easier to swap 2 wires and correct the rotation before mounting the cowl and prop than to have to take everything back apart. Don't ask how I figured this one out. Once the motor rotation was correct, the cowl was fitted to the fuselage. The cowl wasn't quite as tight a fit as the horizontal stabs, but it required a bit of force to get it fully seated against the fuselage. I opened up the cowl mounting holes in the fuselage with a 1/16" drill bit because the cowl screws were a tight fit and the Phillips heads were easily stripped out. Last up was the prop. I checked the balance before I installed the prop. Mine was off a bit, but was easily brought back to balance with some careful sanding. Using the instructions printed on the addendum, the prop and spinner were installed. I also verified that the printing on the prop faced forward before I tightened the prop nut.

Radio Setup

The E-flite Carbon-Z BNF Basic T-28 came with a Spektrum AR636 Sport Receiver with AS3X stabilization technology. The receiver was programmed with stabilization parameters specifically tuned for the T-28 airframe. This receiver should contribute to smooth flight characteristics for the plane. Page 3 of the Instruction Manual detailed the transmitter settings and surface travel amounts for high and low rates.

Completion

The completed Carbon-Z T-28 weighed exactly 11 lbs 12 oz with the flight battery, RTF. The plane balanced slightly aft of the recommended CG with the battery positioned all the way forward on the battery tray.

With the supplied 14.75x10 prop, the E-flite 60 motor pulled a hefty 68.35 Amps and indicated 1545.3 Watts static power at WOT. This power level calculated out to a nice 131.5 Watts per pound. That is definitely Sport Flyer power territory. I can't wait to get this T-28 in the air.

Flying

Basics

The E-flite Carbon-Z T-28 should fly like a T-28 - gentle and stable with wonderful landings. Let's see how this Carbon-Z version does.

Taking Off and Landing

The E-flite Carbon-Z T-28 has flaps and tricycle gear. Takeoffs should be pretty easy. With the flaps up or with partial flaps and an easy throttle stroke, I could easily stretch out the takeoff run and make it look very scale. With full flaps and full throttle, the T-28 jumped into the air. The widely spaced mains and the tricycle gear insured arrow-straight takeoffs even with a cross wind.

Stunning landings have always been the strong suit of the T-28 design. The Carbon-Z T-28 continues that legacy. This T-28 easily landed without flaps, but the rollout took up a lot of runway. Partial flaps slowed down the landing speed and shortened up the rollout, but full flap landings were the most impressive. It did take me a couple of tries to get the throttle just right for that feather light touchdown, but once set, soft full flap landings were the norm.

Slow Scale-Like Flying

The Carbon-Z T-28 looks very scale at 1/2 to 3/4 throttle. The scale-like speed of the retracts really adds to the experience. The AS3X receiver keeps things rock solid and really locks the plane in space while you make scale speed passes over the runway. Lower the speed and drop the flaps for spectacular low level passes over the grass. Keep the flaps down and lower the gear, and fly even slower. I couldn't ask for a sweeter flying giant scale-like plane than this T-28.

Aerobatics

Yes, the T-28 can fly aerobatic maneuvers as good as any sport plane. Loops, rolls, spins, and inverted flight are all easily performed. Stall turns and Cuban Eights look pattern perfect. Knife edge flight hangs in there with just a hint of a tuck to the gear. Non- scale high speed passes are pretty spectacular too. As much fun as it was to sport fly the T-28, I think I actually prefer flying low and slow and more scale-like.

Is This For a Beginner?

Nope! As easy as the T-28 flies, it has no self-righting characteristics. However, the T-28 is the perfect 1st large scale plane. The airframe is large enough to teach proper perspective and flight practices in preparation for moving up to larger and faster Warbirds.

Flight Photo Gallery

Jesse Webb was in command of the Nikon while I was having all the fun on the Dx18. Here are some pictures from the first flights of the E-flite T-28.

Flight Video

Jesse Webb was in charge of the Camcorder as I put the T-28 through it's paces.

E-flite Carbon-Z T-28 BNF Basic - RCGroups Reveiw (6 min 43 sec)

Conclusion

This is one great flying plane. The E-flite Carbon-Z T-28 flies just like a T-28! It may be big as a barn, but it flies as light and easy as a parkflyer. This T-28 has to be the best big plane bang-for-your-buck out there today. This 78" scale type model won't break the bank but it will sure turn heads at your flying field. The AS3X BNF Basic version is rock solid in the air and it lands like a feather with those great big flaps. Some field assembly may be needed if you drive anything smaller than a full-size pickup, but that assembly only consists of few bolts and it's fast and easy.

Pluses

  • Great Scale-Like T-28 Warbird Looks
  • Excellent T-28 Flight Characteristics
  • Huge Flaps and Retracts add to the Realism
  • Slow Flight is Spectacular
  • Sport Plane Performance
  • Very high value in a Giant Scale size
  • It's available BNF with AS3X

Minuses

  • Flap servo cover clearance issue
  • Horizontal stab tight fit issues

Thanks

I'd like to thank Horizon Hobby and E-flite for providing the Carbon-Z T-28 for this review. Thanks to Jesse Webb for helping with the photos and video and thanks to our editor Angela for her assistance in editing this review.

Last edited by Matt Gunn; Jun 20, 2016 at 12:59 PM..
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Jun 13, 2016, 11:19 AM
We shall serve the Lord
kingsflyer's Avatar
Hope you've enjoyed reading this Review as much as I enjoyed building and flying this T-28.

Here is a thread that's already in progress and discusses various modifications and changes folks have tried on this plane. It's pretty long, but there's a lot of good information.

https://www.rcgroups.com/forums/show....php?t=2449980

McD
Last edited by kingsflyer; Jun 15, 2016 at 10:00 AM.
Jun 13, 2016, 11:53 AM
MK
MK
Registered User
I've seen this fly at NEAT and it flies AWESOME!
Jun 13, 2016, 12:00 PM
We shall serve the Lord
kingsflyer's Avatar
Right now Horizon has a $50.00 discount available on this plane during their "Foam Frenzy" event. Check it out:

http://www.horizonhobby.com/storefro...iceBox_FF50off

McD
Latest blog entry: LEDs on my T-28
Jun 13, 2016, 03:45 PM
MK
MK
Registered User
And don't forget the 10% off code on top of that!
Jun 14, 2016, 09:26 AM
AA6JB
Bajora's Avatar
Tight horizontal stab fit, yes? While assembling mine, I pushed and wriggled it so hard that it snapped the end of one side off, just at the point where the carbon spar/rod ends. The noise that ensued caused my wife and daughter to come running, thinking that I had cut off a digit or something.

And a replacement stab costs 40 bucks from HH? I love my CZ T28 but the price for spare parts seems a bit on the high side IMO? I luckily scored one off the RCG classifieds for a more reasonable price. Thank you RCG ads!

Can't wait to see Horizon come up with another similarly sized CZ warbird!

Fine review Mike!
Latest blog entry: 2017 Reno Air Races
Jun 14, 2016, 09:58 AM
We shall serve the Lord
kingsflyer's Avatar
Thanks Jon. After several cycles of removing and reinstalling the stabs, I expected them to be easier to reinstall. Not the case. I recently tried beveling the front 1/4" of the stab insert and that seemed to help a lot. I think that sharp front edge may have been "balling up" and causing the rest of the part to pucker and swell up as we tried to keep pushing it in place. If you need to remove your stab, give this a try before you put it back in place.

McD
Last edited by kingsflyer; Jun 14, 2016 at 02:17 PM.
Jun 16, 2016, 04:27 PM
Registered User
cliffo's Avatar
Good review Mike. Thanks.
Jun 18, 2016, 06:43 PM
We shall serve the Lord
kingsflyer's Avatar
The HEART OF TEXAS MINIATURE AIRCRAFT CLUB held it's annual Big Bird Event this weekend in Waco, Texas. The Club decided to waive it's 80" minimum wingspan requirement, only for the Horizon Carbon-Z T-28. There were two flying in formation as five more waited in the pits. This club has gone Carbon-Z crazy! I think I know why.

McD
Last edited by kingsflyer; Jun 21, 2016 at 06:19 PM.
Jun 18, 2016, 06:54 PM
AA6JB
Bajora's Avatar
You need to mount a few wingtip missiles, or something, to "boost" the wingspan a little.
Latest blog entry: 2017 Reno Air Races
Jun 20, 2016, 10:38 AM
Team Futaba
Silent-AV8R's Avatar
How have the retracts been holding up for the guys in your club. Early on there were numerous reports of fried retracts, etc. The threads here on RCG cover that issue extensively.

https://www.rcgroups.com/forums/show....php?t=2493598

https://www.rcgroups.com/forums/show....php?t=2449980

Mine is nearly a year old now. I had 2 retracts fail, both of which were replaced by Horizon. I am still using the stock motor and ESC and have found the MAS 16x8x3 prop to be perfectly awesome on this plane.

The only real change I made was to replace the elevator linkage with a 2-56 rod. I also put some strapping tape along the flap hing line since mine was starting to tear a bit. I also installed my Futaba radio using a separate battery for the radio and eliminated using the built-in BEC.

But it is a great flying plane. I use 6S 5,000 mAh 35C Pulse packs and they are also a great item.
Jun 21, 2016, 05:11 PM
Registered User
Dadawada's Avatar
With just a few changes, you can turn this foam one into a nice little stand-off scale warbird:

Replace control linkages with metal and thicker gauge.

Tape flap hinge to reinforce.

For aesthetics:

Replace 2 blade prop with 3 blade MAS 16x8x3.

Replace pilot figure.
Last edited by Dadawada; Jun 24, 2016 at 10:46 AM.
Jun 21, 2016, 07:38 PM
new Biplaner to be 04 2013
cpt.chaos canada's Avatar

my promo video mod ...


Hi Mike,
nice enthusiastic review.
Good job.

I thought I take advantage of it to add a little fun to the awfully weird background music of the promotion video.
True story:
In 2015 one of my RCG friends, who likes "real warbirds" a lot, posted his disappointment about this "non real warbird" release.
To cheer him up I asked: What's your quarrel with a T28, it's in good company next to the famous Chitty Chitty Bang Bang.

They both look like they wouldn't fly at all, but obviously they do so pretty darn well!

Then I told him that Horizon Hobby would release a sound module for it which was introduced in a modified promo video.

After watching it he said "Thanks, now I really want one"

Enjoy:
chitty bang T28 special version (1 min 56 sec)


Happy landings all
CCC
Jun 21, 2016, 08:02 PM
We shall serve the Lord
kingsflyer's Avatar
Not sure Horizon would approve, but it sure brought a smile to my face.

As for Warbirds, I'd much rather land my Carbon-Z T-28 on a gusty cross-wind day than any "Sexy" P-51. Same goes for taking one off.

Here's a shot of our club flightline this morning. Newest T-28 ready for it's maiden.

McD
Latest blog entry: LEDs on my T-28
Jun 24, 2016, 02:50 AM
Team Futaba
Silent-AV8R's Avatar
Oh, and get a 16x8x3 MAS prop. It is "THE" prop for this plane. I've been running one for months on mine with the stock ESC and motor. Really wakes the plane up!!


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