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#61
Fraser's Project Board / Re: Cessna 150M Project 5
Last post by Gearup - March 31, 2024, 03:12:17 AM
Here is the 150 gear.

The mains are spring rods enclosed in a fairing. Therefore they look the same as the Cessna 140 for all purposes. The difference is they are shorter and more squat. This is because of the location further aft on the fuselage in the tricycle design.

The nose gear is an air-oil oleo strut. So it was built the same as the Piper 140 nose gear with scissor links with addition of a fitting above the nose fork.

There was a modification for the 150 that allowed for the nose strut to be removed and the main gear legs located forward plus a tail wheel bracket added to the tail cone. This was called a Texas taildragger conversion. It was cool looking and if it was an early straight tail 150, it looked like a baby 185. Only problem was the short gear allowed the prop tips to get close to the ground when the tail was lifted on takeoff.  Aftre flying Fleet Canuks for tail wheel experience, I had a chance to fly the Clubs 150 taildragger. The instructor neglected to tell me about this little issue until I gave a good push on the controls to get the tail up. And no, I did not strike the prop, but the instructor certainly made this clear on further take offs not to treat the take off like a Fleet. Of course a wheelie landing was also discouraged to do this and three point landings were preferred. 
#62
Fraser's Project Board / Re: Cessna 140A Project 5
Last post by Gearup - March 31, 2024, 02:58:47 AM
Showing the completed gear for the Cessna 140A

A .020" wire was run into a 1/8" copper tube as in the Piper main gear, and squashed down. The aircraft is a flat spring steel gear leg, so this worked well. The .062 axel was slipped onto the protruding wire and bent to the correct angle. A solder blob on the joint made for a very strong gear. 

The tail wheel bracket was made from 1/4" brass tube squashed to make it flatter then shaped on the belt sander. It took a few tries to get the geometry right and the piece is only 1/4" long. The tail spring was soldered and will be trimmed later. For scale the tail spring rod shown is .062" diameter.
#63
Fraser's Project Board / Re: Piper PA28-140 Project 5
Last post by Gearup - March 31, 2024, 02:29:15 AM
Her are some pictures ofd the Piper gear build up.

Both main gears and nose struts are air-oil oleos. They are build up in a similar manor with scissor links and axel with the nose gear having a fork fitting for the wheel. 

I discovered that inserting a .032" wire into a .125 copper tube and squaring it flat it gave a good approximation of a faired strut. So prior to squashing the tube I also inserted a .020" wire flattened to fit inside the tube nest to the .032 " strut. Then with a squash, they were effectively swagged together.

Next I drilled the axle from .062" wire and slipped it over the lower strut and bent and cut the "scissor" link to space the axel down. I held the assembly in a small vice and let the axel dangle toward. It is also not 90 degrees to the strut but at a shallow angle for when the strut is installed to the wing, the axel runs level but the strut is canted due to the dihedral.

Flux and small solder blobs added to the key points and the pass of the torch flam and all is done.

The nose gear is pretty much the same except for the fork formed from a small piece of sheet brass.

#64
Fraser's Project Board / Re: Cessna 140A Project 5
Last post by Gearup - March 31, 2024, 02:09:44 AM
Proper picture of the Cessna 140A. 

I think for the carburetor I will build it up with silver tape as it does sit forward slightly from the cowl. 
Fraser

#65
Fraser's Project Board / Re: Piper PA28-140 Project 5
Last post by Gearup - March 31, 2024, 02:01:18 AM
Made this entry in the Cessna 140A project. oooops.
Here is the Piper in the proper place

Major filling done and cooling inlets and carb inlet carved. The Cherokee had a rather more rounded nose than the other aircraft I'm building. The close up picture do show more finessed cleanup of the inlets is in order. But, consider the hole for the prop is only .062" in diameter.
#66
Monthly PING! / Re: March 2024 Ping
Last post by Gearup - March 31, 2024, 01:53:24 AM
Better late thnn, well you know the rest...

Plugging away on the landing gears for the Project 5 fleet. As the parts are made from brass, it is a process that I can set up and do end-to-end.

Fraser
#67
Lou's Projects / Re: 1/32 Mack R600
Last post by Gearup - March 31, 2024, 01:50:37 AM
Looks great. What wood are you using for the trucks?
Fraser
#68
Lou's Projects / Re: 1/72 Early Jets - North Am...
Last post by Gearup - March 31, 2024, 01:49:04 AM
Must be a close relation to the Sabre?
Fraser
#69
Boomerang's Projects / Re: 1/32 BAT FK 23
Last post by Gearup - March 31, 2024, 01:48:16 AM
Wobbly bits make the model, I say.....

Lou, sometimes it is good to step back a bit to see what you have accomplished and you would have to take a pretty big step to take it all in.  Take a good breather!

Fraser
#70
Lou's Projects / Re: 1/32 Kenworth T800
Last post by Gearup - March 31, 2024, 01:44:51 AM
Nice to change it up for sure. Leaving the trucks bare is a good look. I think I would get too wrapped up in painting them. 

Fraser