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Scale World Models 1/3 Super Cub Project

witchfingers

witchfingers

70cc twin V2
I like your landing gear. We just wire tied ours in the center. The stock gear is a little stiff and bounces. After some mods and throwing away most of the hardware, the Airborne cubs are awesome. The clipped wing is one of the best flying planes I have ever flown. I can only imagine how the supercub is.
 
R

Racer46

New to GSN!
Madinpensacola said:
Personally, I replaced both the main and tail landing gear. The front was too stiff and the back was too industrial for me. It'll do fine with both I'm sure but I replaced my main with Robart fully articulated "scale" gear and the tail wheel assembly with an old Aeroworks, 35% tail wheel assembly I had laying around. I just went for function and am not at all worried about "scale". This is my "beater", just have fun with it by doing the unexpected plane (DA100 and smoke). I also replaced all of the linkage hardware. The threaded rods had hardly any threads and the metal was brittle.
:laughing:
Click to expand...
Did you use the Robarts 1/4 or 1/3 main landing Gear?
 
Diggity

Diggity

70cc twin V2
Bartman said:
Engine photos.

The firewall is a double layer of plywood and I reinforced mine with aluminum angle on both sides due to how I plan to use the airplane and because the plane was designed for a Zenoah GT-80 and I've got a BME-102 on it. Also, the firewall is built with zero right or down thrust so if you want to add any you'll have to shim your mount yourself.

There are two lines etched into the firewall which define the center of thrust but if you plan to use right or down thrust then you've got to offset your mount from those lines appropriately.

I haven't mounted the cowl yet, but will do so after the first couple of flights have been completed.

To make the maple/wood spacers behind the engine I bolted a few big fender washers to each hole of the engine's backplate and then used a router to follow the contour of the backing plate and washers, it worked pretty well but took a few tries to get the right router bit that wouldn't knock the ears off as I went around each time. Once I had the stack of spacers done and glued together I pegged the stack to a 4x4 and cut about 2 degrees of right thrust using my chop saw.

The hole in the center of the stack could have been bigger to make the spacer lighter but the BME-102 is already a lot lighter than the GT-80 so I figured a little extra weight wouldn't hurt.

Since there isn't an engine box hanging off the firewall, it's hard to say how a servo could be mounted without it being behind the firewall. THe fuel tank goes right behind the firewall so the only real option is to put the throttle servo back in the cabin which is what I did.

World Models supplies a 50 oz (1.5 liters) fuel tank which ought to be fine for the 102cc engine. The stopper design for the tank is a little funky but in the spirit of doing a complete review I've gone ahead and assembled/installed it! It'll get fuel for the first time later today so I'm hoping it works great! I'll post a few more later this afternoon.

Here are the pics;
View attachment 53244 View attachment 53245 View attachment 53246 View attachment 53247 View attachment 53248 View attachment 53249 View attachment 53250 View attachment 53251
Click to expand...

I am building a 1/3 Clipped wing Cub and the firewall has no thrust angle. I was going with the 2 degrees thrust angle but how far over should the offset be from the center line on the firewall?
 
Bartman

Bartman

Defender of the Noob!
Bartman said:
@Decal Dennis sent the graphics out this week and they look great! I'll post better pictures when it's outside and in the sun but I did this short video today as I was putting the big pieces on the wings. The video quality is much better if you select 720HD by clicking the little gear icon in the video box.

Click to expand...

Just watched that video for the first time in a long time, I forgot it was even out there! Those graphics by @Decal Dennis were frickin' perfect, it's all coming back to me! That plane was a lot of fun. :) I think Paul @GSNadmin still has it, don't know if he flies it or tows **** with it! lol
 
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