Airfield T28 - RC Groups
Thread Tools
This thread is privately moderated by Prof100, who may elect to delete unwanted replies.
Feb 26, 2012, 11:58 PM
Registered User
Prof100's Avatar

Airfield T28

Edit from an old post to fix screeching of the motor on a 5S
It is not timing. I thought it was too having experienced before on other motor combinations. I am using a 80 amp Hobbywing Pentium. Hobbywing makes the Turnigy ESCs. I have tried low, medium and high timing. Higher timing made it worse.

GOOD NEWS -- I found the problem and made a correction. It was one of bullet connectors between the motor and ESC. It wasn't making good contact. There was little or no tension betwen the male and female bullet connectors. I fixed that and it now works. I am going to solder the connections because the spring loaded bullet connectors when I get time.

I also swapped out the front wheel and tire for 2.25" (57 mm) low bounce Dubro wheel. The prop is just too close to the ground with the stock front wheel. I haven't broken a prop blade yet but it was only one bad landing away from doing so.


February 25, 2012
Nitroplanes has good sale going on and I bought Airfield (FMS) T28 ARF in Red and White.
Shipping was expensive simply because of the size of the box. With the discount it was $223 shipped to my door.

There are few good build videos from Nitroplanes.

Here is part #1.

Here are the specs:
Wing Span: 1400mm/55.1in
Length: 1185/46.7in
Weight: 2450/86.4oz
CG Position: 80-85mm
ESC: 50A with 4A SBEC
Motor: 4250-kv500 Outrunner Brushless Motor
Servo: 1*17g, 7*9g, 4 Digital Servo
Propeller: 13*9

FACTORY Recommended CG
3.15 to 3.35 inches from the leading edge of the wing (80-85 mm)

Radio Control Set: 6CH (Not Included)
Battery: 14.8V Li-Po Battery 2600mAh (Not Included)

I found a two part video on YOUTUBE that helps with understanding the wiring of all the servos and the slaving in of the lights on 6 channel receiver. They are called build videos but some of the suggestions are suspect and it ignores the fitting you have to do to the prop and the vertical stab and elevator.
Building the Airfield 1400mm T28 by Jeff part 1 (11 min 29 sec)

Building the Airfield 1400mm T28 by Jeff part 2 (14 min 40 sec)


GLUE -- I used Beacon FOAM TAC glue because regular medium CA would probably kickoff pushing and fitting the parts together. It was a tight fit and to get a flush finish it required some trimming of foam and hand holding. In the end I use the foam tack and then hand held some sections with a gap and sued some medium CA with kicker to prevent a void or gap.

First power up smoked a gear door servo which I replaced with HXT900. The no name 65 amp ESC and supposed internal 5 amp BEC is suspect to me so I am replacing it from the start with 80 amp Hobbywing Pentium and 10 amp Castle UBEC.

Here is a photo of my hornet's nest of wires.
  • AR6200 Spektrum receiver with satellite
  • Castle 10 amp UBEC
  • 80 Hobbywing Pentium ESC.
  • 4S Turnigy 4000 MAH pack
All electronics fastened to the foam with 3M Dual Lock.

Lipo uses regular Velcro on the bottom to supplement the strap (not shown).

Wiring schematics

Maiden flight went well. On a 4S it flies very scale but sensitive to wind. A 5 cell would help.

Cheap servoless retracts are very fussy. Left main retract would not deploy. I thought it was the sequencer but it's not. The wheel cover was binding when the gear was up. Took the wheel covers off both mains and the gear deployed.
Things to do to prevent gear retracts.
1. Filing a flat spot between the oleo and servo leg I don't get how to do it. I understand the words but can't visualize.
2. Shimming the bracket I understand and will do.
3. Cutting the foam for bent struts I will do.
4. Jettison the wheel door covers is what I had to do to get mine to work.
5. Checking the door covers attached to the strut for binding I understand. They may get removed like the wheel covers.
Last edited by Prof100; Dec 01, 2017 at 04:47 PM.
Sign up now
to remove ads between posts

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Help! Anyone Else Had Problems with Airfield T28? RCFlyer43 Electric Warbirds 48 May 21, 2014 12:38 PM
Discussion Parkzone t28 vs. Airfield 1400mm t28 LIZZAY Electric Warbirds 11 Jan 01, 2012 10:55 PM
Discussion Airfield 1400 t28 retract problem faheja Electric Plane Talk 1 Nov 03, 2011 06:58 PM
Question 1400mm Airfield t28 Trojan - cg, retracts ericpilot Electric Warbirds 1 Aug 22, 2011 08:17 AM