Train-Air 40 (oz14153)
About this Plan
Northeast Aerodynamics Train-Air .40. Wingspan 58 in, wing area 620 sq in. For .40 - .46 engines, and 4 channels.
Direct submission to Outerzone.
Quote: "Steve and Mary, I read the 'Want Ads' for non-published plans, and realized I had another set that wasn't posted! I just got them scanned. I have not built one of these, so I don't know first hand.. but the full horizontal stabilizer is not shown. From the top view, the center section of it appears to be rectangular, but may well have a swept leading edge, further out. Looking at the tail arm, and the wing chord, I expect that if it were made to be 22-24" wide, that would be plenty of area. Maybe other viewers/builders will know the plane and post comments. I've seen a very similar airfoil on one of the current 3D models.. with a large flat, behind the spar, for ease of building. Looks like a good one! Again, thanks for the wonderful web site!! Hobiepilot"
Note Photo of completed Train-Air 40 model an electric conversion, built by Moon Pie [main pic], was found online at : https://www.rcuniverse.com/forum/glow-electric-conversions-132/11694769-northeast-aerodynamics-ta-40-electric.html
Update 30/10/2022: Added kit instructions, thanks to Robert Allen Fitch.
Quote: "INTRODUCTION: The Train-Air .40 is a no compromise aircraft capable of basic training, general sport and full aerobatic flying. There has been no expense spared to offer you, the modeler, the best kit of its type available today.
The Train-Air .40 is design engineered for a non-schnuerle .40 engine. Flawless performance, from basic training to full aerobatics, is achieved effortlessly with this type of powerplant.
The kit is engineered to contain a minimum of parts to assemble, making this one of the quickest aircraft to construct. You may either use a wing jig (holes provided in ribs) or build flat on a table.
The durability built into the design is fantastic! Built according to instructions, this aircraft is one of the most durable kits available, to give you long maintenance-free service.
Since most modelers fly from grass fields, the Train-Air .40's landing gear system is designed for extra prop clearance and greater handling capability.
The incorporation of a radial engine mount (not included) allows versatility in engine and mourn choices.
This also aids in maintenance and replacement. Speaking of replacement, Northeast Aerodynamics has wing and fuselage kits available seperately upon request.
Northeast Aerodynamics is deeply committed to excellence in design engineering, quality kit manufacturing, product performance and last but not least, customer service.
CONSTRUCTION TIPS: To expect excellent performance, regardless of the aircraft mentioned, you must begin with a straight and true, warp-free airframe.
The first requisite for building a straight, warp-free airframe is a flat, warp-free building surface. An excellent building surface can be easily constructed with materials found in a typical lumber yard.
Locate a flat, unwarped, 12 x 48 in section of good grade 3/4 in particle board. To this laminate 12 x 48 section of 5/8 in homasote. Laminate the homasote to the particle board with contact cement. This makes a good, rugged building surface that you can pin into (homasote of course). Other good features are portability, re-usability and compactness.
A straight flat sanding block is almost indispensible for accurate sanding. Find a piece 3/4 x 3 x 12 in sugarpine. Contact cement #100 grit on one side for rough sanding and #220 grit on the opposite side for medium sanding. Finish sanding requires #400 to #600 grit paper.
PRE CONSTRUCTION AIDS: Locate all bulkheads F1 to F6. Measure accurately and draw vertical centerlines on all bulkheads. These lines will aid in aligning fuselage over the top view of the plans.
Using engine and mount that you have selected, overlay drawing of F 1 (on wing plan) onto the actual 3/8 plywood piece. Transfer vertical and horizontal centerlines and engine mount holes (KM .40 mount only). If you are not using a KM .40 mount, use the centerlines to locate your mount. Drill 3/16 holes to accept #6-32 x 1 in screws provided in the kit. -
White glue fin part #1 to #2. White glue 1/4 x 1/4 leading edge and hinge line supports in their respective locations. Be sure to leave 5/16 protruding beyond bottom edge of fin. Tack glue rudder into position.
White glue stabilizer leading edge (with slot and rounded ends) to stabilizer center. Tack glue elevator to this assembly.
White glue 1/4 in blasa top rear fuselage sheets with slots together. Make sure that slots merge.
Block sand with #220 grit paper to flat condition. Glued seams should not be obvious after sanding.
Sand 1/8 radius on all outside edges of fin and rudder assembly.
Sand 1/8 radius on all outside edges of stabilizer -elevator assembly. - Separate rudder and elevator cleanly away from fin and stabilizer.
Sand 1/8 radius on the rudder leading edge and the elevator leading edge. Do not sand hinge line of either fin or stabilizer. Leave flat.
Cut 3 evenly spaced (as located on plans) hinge locations in the fin and rudder. (For best results use commercially available hinge slotter, Dubro or Goldberg.) Dry fit only at this time.
Cut 5 evenly spaced hinge loactions in the stabilizer-elevator assembly. Dry fit only at his time. Epoxying and pinning will be done in finishing procedure described later.
Please familiarize yourself with all remaining parts in the kit and the instructions.
WING ASSEMBLY PROCEDURE: Please construct wing prior to fuselage.
w1. Remove any wrinkles in wing plan by ironing. Tack wing plan onto building board and cover with wax paper or clear plastic film.
w2. Pin 1, 1/16 x 3 x 27 bottom leading edge sheet directly over specified area on plan. Line up rear edge and centerline.
w3. Pin 1, 1/16 x 1-7/16 x 27 bottom trailing edge sheet directly over specified area on plan. Line up front edge and centerline.
w4. Transfer all rib locations (with pencil) onto sheeting as you will be covering up the plan with parts as you build.
w5. Cut, glue and pin all 1/16 x 1/4 bottom rib cap strips. Cut to length from 1/16 x 1/4 x 27 stock provided... "
Update 3/4/2023: Added kit review from RCM, March 1981, thanks to RFJ.
Supplementary file notes
Instructions.
Review.
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(oz14153)
Train-Air 40
by Ernie LaChance
from Northeast Aerodynamics
1980
58in span
IC R/C Cabin
clean :)
formers unchecked
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Submitted: 11/10/2022
Filesize: 1359KB
Format: • PDFbitmap
Credit*: Hobiepilot, Robert Allen Fitch
Downloads: 868
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User comments
I am honored that you chose the picture of my TA-40 for your listing.I built this kit in the later 1980's. It was powered by an OS.40FSR glow engine, but I converted it to electric power in 2021.
The stabilizer consists of two 3"x18"x 1/4" balsa pieces that are edge glued. The stabilizer profile has approximately 1" radius on the outer ends, and the instructions say to sand a simple round profile on the edges. The elevator is also a piece of 3"x18"x1/4" balsa, with simple rounded edges. I modified mine to have split elevator halves, and a larger/longer rudder for better control effectiveness when water flying on floats as well as snow skis.
Robert Allen Fitch - 28/10/2022
These used to be made a few houses down from my grandparents in Hudson, NH off of Robinson Rd. Most of the clubs in NH, someone was flying these models. They flew great, and I figured they would be around forever, like Benson's Animal Park....
Scooter Booter - 25/11/2022
Mine came from an estate sale in northern New Hampshire from a club member who had passed. The club member ran the estate sale and set aside this plane when I asked him to pick something out for me. He said it looks like a trainer, but it’s now with the semi-symmetrical wing. He knew it was produced local in New Hampshire but couldn’t remember the name of the company. It came with a bushing .40 engine and flew like a trainer would. Keeping with the cheap theme I have a second hand .46 bb engine on it and it’s quite the sport plane now. I’m flying it on all the original servos, I just changed the receiver battery and added a receiver for my radio. When cleaning it up I found a note indicating this is the second fuselage built for this wing in November 1991, I was 7! The wing has the leading edge dowel holes in it but is set up for a rubber band wing, which I’ll leave. The compact size doesn’t take up a lot of room in the truck and it’s become one of my favorite planes to mess around with.
Jon Blake - 01/04/2023
I purchased one of these complete from an estate sale last summer [pics 006-009]. The club member who was running the sale picked it out for me as it looked like a trainer, but has aerobatic capability due to the semi-symmetrical wing. He remembered the kits being produced local in New England (we live in New Hampshire) but couldn’t remember the name of the company.
When I got the plane it had a Tower Hobbies .40 abc (OS .40 FP clone), after a little clean up I flew it most of the summer on this engine, and it flew like you would expect a trainer would. Keeping with the cheap beater theme I upgraded it to an eBay find Tower Hobbies .46 Pro BB and now it’s just a great basher. The small size takes up minimal room in the truck so it’s always at the field with me. While going through and setting up my electronics I found a bunch of notes written inside the fuselage. One of them said this is the second fuselage built for this wing, in November of 1991, I was 7!
It’s become one of my favorites and I’m glad someone was able to identify what it was for me. We are waiting for the snow to melt and our flying field to dry up. This was the last plane I flew in December and it will most likely be the first plane I put up this spring.
Jonathan Blake - 04/04/2023
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- Train-Air 40 (oz14153)
- Plan File Filesize: 1359KB Filename: Train-Air_40_oz14153.pdf
- Supplement Filesize: 3306KB Filename: Train-Air_40_oz14153_instructions.pdf
- Supplement Filesize: 2594KB Filename: Train-Air_40_oz14153_review_RCM.pdf
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Notes
* Credit field
The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.
Scaling
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