Hey Gals and Guys

4 questions which you might be able to help with after researching a Pilatus PC6 model.

1. Scale drawings don't seem to line up with original specs. is that normal or do you need to modify the design for R/C

2. Scale model and scale speed doesn't seem to match, so how do you pick the power plant for size?

3. PC6 uses wing profile NACA 64-514 which I cannot find any measurements for apart from the link below. Can anyone point me to the tech specs?

https://static.rcgroups.net/forums/attachments/4/2/8/5/5/6/a 6230405-235-Pilatus%20Porter%20airfoil%20NACA%2064-514%20vs% 20HK%20PC-6%20airfoil.jpg

4. Perhaps a personal or $$ choice, how many control channels do you suggest? I figure if money is to be spent, then plan for the max and build up servos as required. Thoughts?

Thanks for letting me amongst you all.

1. 3-views often contain inaccuracies, they usually more of general arrangement drawings than actual scale drawings.  Unless they have been done by an enthusiast who cares.  As you are building, rely more on photographs of your subject than the 3-views.  If you are going to compete that is a whole different ballgame and there are lots of discussions on the site to cover that.

2. Model speed and full-size speeds will never match, because of Reynolds Numbers.  If you are designing your own, look around at similar models, taking into account wingspan, weight and airfoil.

3.  I'm too lazy to convert your URL into something that work.  An aeronatical engineering book can tell you how to draw the airfoils; it's really not that hard.  OR - make friends with someone who has the Profili or Compufoil software - they can generate the airfoils for you, and even do blended airfoils (different at root and tip) with washout.

4.  Get as much radio as you can afford.  You don't need all the servos yet, but the higher end radios have features that make things easier, and eventually you will have need of more channels,

Having gone thru all of that, let me recommend that you join the community here.  I don't know if you ever subscribed to an RC magazine before, but the Site Supporter program offers tons of value, over and above the already invaluable input and knowledge of the members here.

Thank you so much for your 'over the pacific' welcome!

Suggested by Sparky, modelling experience you might describe as 'ground zero'.  I did some drafting before CAD and did some CAD with my house building days.

Civil building has been my most hands on apart from domestic repairs as I am an 

just to name some of my past careers.

My reimagining was to use this as a STEM educational tool, but powers that be went into another direction...

Now having the richness of time and economy of pocket one has to make a start.  

I am in the process of collecting PC6 plans etc, including Pilatus' own, and considering using possibly blender to begin consolidating initial ideas.  I take Jeff's advice regarding pics and the 'lets try this' possible approach as well as diving into  Reynolds Numbers, NACA profiles, materials, ratio comparisons, testbeds etc etc.

Thanks again!

I don't know what size PC-6 you are interested in, however - the best plans and kit can be found here: https://www.rc-airplanes-simplified.com/rc-pilatus-porter.ht ml

You can buy the plans and have them reduced to any size you wish. That will save you the time designing your own. The PC-6 is a very popular model and countless plans and kits exist in all propulsion forms: internal combustion, electric, and turbine power.

Josh

https://www.google.com/search?q=Giant%2BScale%2BPilatus%2BPC -6%2BPlans&sa=N&rlz=1C1GCEA_enUS855US855&biw=192 0&bih=937&tbm=isch&source=iu&ictx=1&fir= C4LN3OKifb5YQM%253A%252CGdes8LnD28HWJM%252C_&vet=1&u sg=AI4_-kRITigWiu9tEm0JTpMlJqjtUsdYVg&ved=2ahUKEwiylpjv2 b3pAhWzlHIEHYVNCJw4FBD1ATAJegQIChAQ