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Robinhood 99 Kit Build

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Robinhood 99 Kit Build

Old 01-02-2021, 03:48 PM
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ibuildrcplanes
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Default Robinhood 99 Kit Build

I purchased a World Engines Robinhood kit on eBay last summer to build this winter. The plane will be powered by an OS 240 Gemini. It will also have a cowl made by Fiberglass specialties. The wing will be a 3 piece with flaps. The wing will modeled after the Sig Rascal 168 set up, Carbon fiber tubes to join the wing panels and 4 piece wing struts for to help reinforce the wing. As far as the covering it will be Monokote, Probably yellow wing and tail and orange fuselage. Radio will be Futaba, I purchase a 8 new old stock F-34 servos at Perry last year and be perfect for this plane. I will mount the elevator and rudder servos in back of the plane. I gave the shop a good cleaning and organized before starting this build.



Old 01-02-2021, 04:06 PM
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ibuildrcplanes
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Default Robinhood 99 Kit Build

I started with the Horizontal stabilizer and elevator today, The only change I made to the Elevator was where the Control Horn mounts. They had 1/2" by 1" balsa. I changed it to 1/2" plywood and made it wider. The biggest project as trying to get the building surface flat and level. After a lot of trial and error I found a huge pack of wood shims. That did the trick. Also with an old kit some of the wood is not straight and the plans lines are a little off. This is where having a lot of metal straight edges comes in handy. Tomorrow project will be to sand it and get the hinges installed.

Old 01-03-2021, 09:51 AM
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Looks like your shop is well stocked and organized. I seen hobby shops with less stock!
Old 01-03-2021, 05:11 PM
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I was able to get in a few hours in today after a long day at work. Sanded all the edges into shape today as well all the surfaces were sanded. Final sanding well happen later down the line. I also installed the Robart hinges, 8 total. If time allows tomorrow I will start on the rudder.

Old 01-05-2021, 05:43 PM
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I was able to build the rudder and vertical fin today. I changed the bottom of the rudder from balsa to 1/2" plywood. Added some extra gussets to the corners for extra reinforcement. 4 Robart hinges installed. The rear post on the vertical fin is 1/2" by 1/2" pine, Using the Robart hinges all you have to do is drill a 3/16" hole for the hinges instead of trying to cut slots for flat pin hinges. Tomorrow I will start to on the fuselage.


Old 01-09-2021, 03:28 PM
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I been working on the fuselage this week. One of the changes I made was to change all the 1/2"x1/2" balsa to plywood around the cabin window's and also the wing saddle was changed to plywood as well. Also added hard wood along the base of the windows. The rear of the fuselage I made plywood servo mount. Everything to cut for the other side of the fuselage but the plywood is warped. Trying to get it flat by running hot water on it and putting weights on it. If that does not work I will have to order new plywood.




Old 01-26-2021, 04:23 PM
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The Fuselage is almost complete. The next few days I will start cut the windows and windshield.

All of the extra reinforcement done. The firewall drill out for the OS F240 Gemini.

Sheeting and windshield frame completed.

Starting to look like a Robinhood.
Old 01-30-2021, 05:03 PM
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Started on the wing this weekend. Cut out 6 new 1/8" plywood ribs and drilled the holes for the carbon fiber rods and servo wires.


The bottom spars cut and ribs are ready to go.

This is where the outer panel of the wing will remove from the main wing panel. 5 ribs for the outer wing panel and 7 for the inner panel on each side.
Old 02-15-2021, 08:38 PM
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I started building my Robinhood 80 tonight... I'm thinking about floats... We have a club float fly a little over 3 months away.. I'm pretty sure I could have the plane done by then but trying to figure out floats by then as well could be a challenge. Anybody done floats on the 80 or 99? Don't mean to hijack your thread but there's no other active Robinhood threads that I'm aware of.
Old 02-17-2021, 07:13 PM
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Originally Posted by camss69 View Post
I started building my Robinhood 80 tonight... I'm thinking about floats... We have a club float fly a little over 3 months away.. I'm pretty sure I could have the plane done by then but trying to figure out floats by then as well could be a challenge. Anybody done floats on the 80 or 99? Don't mean to hijack your thread but there's no other active Robinhood threads that I'm aware of.
Why donít you start a thread on the RH80. I would contribute. I am deep into the build of mine, just about ready to cover. But I am not doing floats.
Old 02-22-2021, 04:18 PM
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Sorry I did not get back to you sooner about the Floats. I never built anything with floats, on the other RCG site there was some people talking about putting floats on a Robinhood 99. On mine I changed the 1/4" landing gear plywood to 1/2" plywood any added about 6" to the length for the struts to attach to. Maybe you can do something similar too attach the floats. Also I cut the Landing gear plywood 1/16" smaller on each side of the fuselage and filled it with balsa strips, A lot easy to sand to the shape of the fuselage. If anyone has any advice please feel free to post something.


Old 02-22-2021, 04:26 PM
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Just about done with the left wing, Still have to add the main spar joiner and the wing bolt mounts.





Old 03-08-2021, 06:22 PM
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Finished building the flap and aileron this weekend. I changed it from solid piece of balsa to stick construction, Also made it 1" wider.

Old 03-08-2021, 09:02 PM
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Looks really nice, I thought about adding flaps to mine as well but ended up deciding not to.
Old 03-13-2021, 02:28 AM
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Wow , this build brings back lots of good memories for me . My buddy and I together had built one of these about 20 years ago . It was his giant scale trainer . We had also extended the ailerons depth as well as added flaps to it . Power was a G38 and he flew the mess out of that plane for a couple years , until he lost vision in one eye from a work accident and had to quit flying .
Congrats , the build is looking great . Fantastic workmanship 👍

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