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1/6 F-105 Build Thread

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Old 11-06-2018, 06:32 PM
  #151  
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Pull Up, there is about 2.25" on each side for the stab bearing blocks.

I went back with more time to do a repeatable shim test to make sure the turbine and pipe are straight and level with the fuse.


This time I used a 3/4" shim under the turbine and pipe. The fuse was leveled in pitch and roll.


I ensured the fuse was level and the pipe was level and centered in the nozzle exit hole.



Pipe centered in nozzle exit hole.


Now it looks right from the side. I will go ahead and cut some longer 3/4" plywood shims to mount the turbine and pipe on.
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Old 11-06-2018, 06:45 PM
  #152  
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I added an inside edge to the nose gear well for the nose gear doors to rest on when closed.


I used .020 G10 sheet


G10 was cut into strips


G10 strips were added to the inside of the nose gear door opening


Results were good for resting the nose gear doors on when closed


Now for hinging
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Old 11-06-2018, 07:01 PM
  #153  
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Dry fit of nose gear and gear door hinges to check for gear and hinge clearance.


Mock up of extra large offset door hinge from enlarged drawing of 3D printed hinges from Ultimate Jets.


Double sided mounting tape use to place hinges in fuse for testing


Wire use to keep hinge pivots in line


Blind nuts installed in nose gear mounts


Nose gear mounted to test for clearance of door hinges


Gear strut clears hinges when extended


I had to move the large hinge forward to clear the tire when retracted.
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Old 11-07-2018, 11:29 AM
  #154  
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holy crap those hinges are awesome, I do the hinge pin in the same manner. I am having a hard time sourcing the normal black plastic offset hinges, Yellows and Tams were nice but it appears a lot of people are copying and the material used now is very poor.
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Old 11-07-2018, 02:20 PM
  #155  
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Great thread. I saw one of Bob's F-105s fly(with Ali as pilot) at BITW several years back. It's probably the one you refer to at the beginning of the thread.
Quite a sight to see since I saw the full size fly with the Kansas ANG back in the day.
Gary, did you extend the wing spar or change it? .. couldn't tell from one of the later pics.
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Old 11-07-2018, 03:18 PM
  #156  
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Hi Matt,

The door hinges are from Ultimate Jets. I really like them. Its a great design. They are 3D printed.

Here is the link: https://www.ultimate-jets.net/produc...-offset-hinges

The large hinge is a mockup of an enlarged hinge that is a special order from Ultimate Jets. The full size mockup was to test the size and fit before hinges were 3D printed. Oli has been very good helping me with things like this in the past. Many thanks Oli.

Gary
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Old 11-07-2018, 03:31 PM
  #157  
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Originally Posted by dbsonic View Post
Gary, did you extend the wing spar or change it? .. couldn't tell from one of the later pics.

dbsonic,

Thanks for the compliment on the thread. I guess I enjoy posting stuff as much as working on it.

However, your question above got my attention...what do you know about the wing spar that I don't? Is there something I need to know about extending or changing the wing spar?

The aluminum plate spar and the plywood wing spar former are the foundation of the whole airplane. Its like the foundation of a house. Everything else is built on it. Its not the design I would make but I guess all three of the F-105s I know that have flown used it. It would be very difficult to change. I'm still thinking about a way to beef up the main spar former.

With the known gear retraction, toe in, mounting, and stab design issues, I'm hoping there is not something else.

Gary

Last edited by Viper1GJ; 11-07-2018 at 03:39 PM.
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Old 11-07-2018, 04:21 PM
  #158  
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No, none that I am aware of. Looking back at the pics, appears same.
But agree reinforcement is not a bad idea. Like carbon laminate on the ply former the spar attaches to.
I remember Ali flew it really scale like. Not aggressive. Nice landings too.
Darren
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Old 11-07-2018, 04:35 PM
  #159  
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Yes, similar to the idea I was thinking about.

I was thinking about laminating the front of the former with CF cloth. Then cutting a 1/4" ply doughnut ring and laminating both sides with CF cloth. The hole would be the same size as the air intake hole in the wing former. Then taking that ring and laminating it to the forward side of the wing former. Then re-drill the wing bolt holes through the extra ply and CF beef on the front side. You cant put anything on the back side of the former because of the close fit of the aluminum spar blades and the aft face of the former. I think the weak spot then would be the bolt holes in the 1/8" aluminum spar blade but not much I can do about that.

Thanks for the help, Gary
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Old 11-07-2018, 06:21 PM
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Began installing servos in servo wells. There are 5, all done the same way.



1/16" G10 servo well covers all cut, drilled, and countersunk.


Servos mounted to brackets, servo arms attached, and brackets mounted to G10 covers.


Parts of plywood mounts and airex material on inside of top skin removed as necessary to get clearance for servo and bracket.


Once the servo cover was dropped in servo the well it was not flush with skin surface so it had to be shimmed on each corner.


After proper shim level achieved, shims were glued in, holes marked, drilled, blind nuts installed, edges sanded, and 4-40 flat head bolts installed. Right aileron servo completed.



Right flap servo completed


RIght wing done, left wing to go.


Low angle view.
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Old 11-07-2018, 06:50 PM
  #161  
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While I've been cutting and hacking in the shop a good friend, Keith Alexander, who is real good with the 3D printing stuff, offered to help with 3D printing of the engine bay airscoops and speedbrake hinges. The speedbrake hinges on the full scale hinge the 4 pedal speedbrake shell that also functions as an afterburner nozzle. They are quite distinctive and add character to the jet. The speedbrake 3D print file was developed by Bob Rullie and he emailed it to me.

The engine bay air scoops were added on later model F105s to help stop engine overheats and fires. They are on all F-105Ds which is what I am modeling.


Speedbrake hinge tear drop shaped covers on full scale jet. There are 8 total.


Engine bay air scoop on full scale. There is one on each side. I gave Keith this photo and several others, some known dimensions from the model, and we were able to determine the scale size of the scoop for the model. Then he developed the CAD model and 3D print file based on the photos.


Speedbrake hinge 3D printout.


Engine bay air scoop 3D print out.


Full set ready to go. We will print two sets, one for me and one for Larry Sorenson plus some spares. Thanks Keith for all your help.
Gary
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Old 11-08-2018, 04:50 AM
  #162  
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Gary,

Neat details - they will help bring the model to life.

I assume that those speedbrake hinge fairings are going to cover a fully articulated and actuated speedbrake installation??

Paul
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Old 11-08-2018, 06:10 PM
  #163  
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Lol Paul, you must think I can do CAD, 3D printing, and laser cutting!

Well, actually I did consider it at first but complexity, incorrect aft shape of the fuse nozzle, extra tail weight, and mostly the other problems I found with the parts, I quickly gave up on it. The fake hinges will have to do.

Gary
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Old 11-08-2018, 06:34 PM
  #164  
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Servos installed in wings and rudder



Left wing done


Rudder done
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