thenated0g
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looks cool
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Ridge Runt Evo
- Thread starter Wayne
- Start date
Hey Doc,
As an active 100 year old modeler I have seen a great deal of our hobby, and still enjoying the challenges!
I liked the Jim Kirkland models and learned to really ring out a full house ship with his Beach Comber design series.
All of his models used airfoiled surfaces, which in my mind made them more effective, and aerodynamic.
Phil Kraft Quick Fly 3 was in fact an easy build model and I still have 2 of his kits on my shelf. There is something
about flat tail surfaces though that rattle my senses.
My favorite airplane? The Taube warping wings, tail and all.
Tom
As an active 100 year old modeler I have seen a great deal of our hobby, and still enjoying the challenges!
I liked the Jim Kirkland models and learned to really ring out a full house ship with his Beach Comber design series.
All of his models used airfoiled surfaces, which in my mind made them more effective, and aerodynamic.
Phil Kraft Quick Fly 3 was in fact an easy build model and I still have 2 of his kits on my shelf. There is something
about flat tail surfaces though that rattle my senses.
My favorite airplane? The Taube warping wings, tail and all.
Tom
Doc J
Very Strong User
Doc J
Very Strong User
Actually, all of my designs use aerofoil surfaces, too - even the fins. It's the best way.
Doc.
Yes I know and flat plate wings also will work, but look at how much better they look and perform when airfoiled.
airfoiled surfaces do not need the same amount of surface area also.
Tom
A little more work done.
Don't think I showed the little servo frame details. This mounts the servo, but also adds a lot of strength right where we grab the plane to huck it into the air. Servo sits at an angle to match the pushrod.
Seems like I end up re-working just about every part of this poor plane as it evolves.
Still debating my wing attachment methods. Right now think it will be a carbon pin upfront and a bolt towards the trailing edge. That is about all that is left for the base design. Then about 1000 things to make it all self aligning. Think we will be cutting a test kit next week.
Time for a little break and back at it in the morning. Shoot - Still need to do some aileron servo trays.. They sure fly better with more than 1 servo. LOL
Don't think I showed the little servo frame details. This mounts the servo, but also adds a lot of strength right where we grab the plane to huck it into the air. Servo sits at an angle to match the pushrod.
Seems like I end up re-working just about every part of this poor plane as it evolves.
Still debating my wing attachment methods. Right now think it will be a carbon pin upfront and a bolt towards the trailing edge. That is about all that is left for the base design. Then about 1000 things to make it all self aligning. Think we will be cutting a test kit next week.
Time for a little break and back at it in the morning. Shoot - Still need to do some aileron servo trays.. They sure fly better with more than 1 servo. LOL
rcsoar4fun
Very Strong User
On the little plane like this, what about a single bolt right behind the spar and a small magnet at the TE?
I had been planning to do a single bolt near the spar, and a small nylon (3mm) screw in the back that only acted as an alignment pin. This would allow the pin the shear if the wing tip hit something, and hopefully save the wing from more damage. I like your magnet idea. I had not seen that done before.
Doc J
Very Strong User
Doc J
Very Strong User
The front pin was an issue in terms of placement and 3D printing concerns. I think it will be OK, the pin is at a rather downward angle. (8 degrees I think) Here is an inside view:
I had dropped the canopy line a long time ago and wanted to keep that profile. This left no where for the pin to go but downward into the front bulkhead.
The bolt down bulkhead is simple but strong. I'm very tempted to tie the tail bulkhead into the wing tie down bulkhead with that square carbon tube I already have in the tail area. I do not think it is needed, but very little weight penalty. Heck, I could tie the front wing bulkhead into it also..? What you think?
Here is the aileron servo locations I like. I am tempted to move them towards the center 1 bay and cut them into the 3D printed joiner (red), but prefer to have the servos out a bit further. What do you think, go with the simple solution since we have the 3D printed part there already or place the servos out a bit further to avoid aileron twist?
Really very close now.
Then can get started on the foam core wing. I assume you all still want that option?
I had dropped the canopy line a long time ago and wanted to keep that profile. This left no where for the pin to go but downward into the front bulkhead.
The bolt down bulkhead is simple but strong. I'm very tempted to tie the tail bulkhead into the wing tie down bulkhead with that square carbon tube I already have in the tail area. I do not think it is needed, but very little weight penalty. Heck, I could tie the front wing bulkhead into it also..? What you think?
Here is the aileron servo locations I like. I am tempted to move them towards the center 1 bay and cut them into the 3D printed joiner (red), but prefer to have the servos out a bit further. What do you think, go with the simple solution since we have the 3D printed part there already or place the servos out a bit further to avoid aileron twist?
Really very close now.
Then can get started on the foam core wing. I assume you all still want that option?
Enjoying the view to your design progress! I'll share a thought that's been bouncing around in my head ever since I did the group build with my son: a twin electric version of the runt, say a couple of 280 or 300 class motors mounted on the wing on either side of the fuse. Looking at your 3d printed centersection I could see a future "option" with a center section that had motor mounts integrated into the LE! Anyways, looking good!
Hah! sorry bout that. I hate "feature creep". But seriously, I think you're onto something here with the carefully chosen 3d printed airframe assemblies - lots of possibilities, and still very customizable by the builder with the mostly traditional built up wood construction.
Yeah, we have been slowly creeping into this solution. Really fun to do something a little different, but still keep the best parts of traditional.
Working on the plans tonight..
May not need to castellate this fuselage as the bulkheads may provide the needed geometry.
Working on the plans tonight..
May not need to castellate this fuselage as the bulkheads may provide the needed geometry.
