Hero 40 (oz6646)
About this Plan
Hero 40. Radio control sport twin boom pusher model.
Quote: "Hi Steve, The Hero .40 was challenge given to me by a friend. To design an airplane with twin booms that you can disassemble keeping the booms and fuse together. Easy to store and assemble. I scanned the magazine article and some pictures of my grand sons when they were young with the 'hero' and an older gentalman, who built the airplane."
Quote: "I am a modeler who likes to design and build different types of aircraft - ones that are interesting, but not too offbeat. I was a draftsman and Computer Aided Design and Drafting operator for 35 years. It's not too difficult for me to sit down at the computer and draw a set of plans, and I've been building and flying RC airplanes for more than 30 years. This project uses proven construction techniques that produce a strong, light, fast-building model. The Hero 40 is interesting and different - it's a pusher with three booms.
The wing is removable for easy transporting; it's a standard .40-size Kaos (oz6251) wing with a swept-back leading edge (thanks to Joe Bridi for this great flying platform.) The interesting thing is that the booms stay with the fuselage and not the wing. The fuel tank is at the center of gravity (CG) and therefore the trim does not change as the fuel is used.
Since the model is a pusher, all of the flying surfaces are in 'clean' air. Another advantage is that the engine exhaust is between the booms at the rear of the model, keeping the fuselage clean and oil-free. The model would make an ideal front-mounted camera or TV platform. I have not tried this yet, but I plan to do so eventually.
Before you start construction, you should consider some options:
1) I used a 1/4-inch aluminum drive shaft extension on the engine. This places the engine closer to the CG. I used a K&B .40 with a longer 1/4-28 shaft. If you can't make one, perhaps a friend with a lathe could make one for you. If not, a work-around would be to use a standard engine and cut an inch out of the rear center section of the wing for prop clearance.
2) I wanted rudder control, I used a pull-pull system that crosses over in the compartment behind the radio receiver. This give you the correct relation between the rudder and nose wheel. The pickup for the rudder is on the top of the nose-wheel shaft. The rudder servo (mounted all the way up front) moves the pickup bar and turns the nose gear at the same time. You can glue the rudders to the fins: a rudder is not needed to fly this aircraft - on one flight I used rudder control to save the airplane when the ailerons unplugged just after takeoff.
3) I wanted to see what effect a prop shroud would have. The model picked up some speed, but even without it there was more than enough power. It would also be possible to use the Hero 40 as an entry-level ducted-fan aircraft. Getting interested?
Construction. Wing: If you can get a Kaos 40 wing kit, you won't have to cut any ribs. If not, make all of the ribs from sheet. I make photocopies of the ribs, then attach the patterns to the sheet with a glue stick. Remove the pattern from the wood right after you cut the rib, before the glue has a chance to set.
Lay down the spars as shown, then glue the ribs in place. (I used Titebond H for the entire wing.) Glue the top spars in place. Place a tapered jig under the rear of all the ribs. Glue the trailing edge to the rear of ribs. Make the trailing-edge sheeting from a 25-inch-long piece of 3/32 sheet..."
Direct submission to Outerzone.
Supplementary file notes
This plan is available for download in CAD format.
Did we get something wrong with these details about this plan (especially the datafile)?
That happens sometimes. You can help us fix it.
Add a correction
Do you have a photo you'd like to submit for this page? Then email email@example.com
User commentsHi Mary! Please, added to this model: Hero 40- by Joel Cimmino from Model Aviation - 1996 - 50in span - IC R/C LowWing Pusher [more pics 009-014]. This model is a 123% scale from the original (wing span: 62 in, engine: Webra Speed .70 with 12x8 pusher prop) VIDEO: www.youtube.com/watch?v=HSQ5Oaz4E84&feature=youtu.be . Thank you for all! Best regards,
LucD - 17/08/2019
Add a comment
* 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.
This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.
© Outerzone, 2011-2019.
All content is free to download for personal use.
For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.
Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.