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  • July 18, 2025, 05:55:57 PM

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61
Open Forum / Re: Team trials location and dates?
« Last post by Paul Walker on July 16, 2025, 10:08:33 PM »
You can fly your plane at the GSSC even if you didn’t build it. You shouldn’t get appearance points, though.

Who’s the CD?  We need to discuss the tabulation program.

Thought that would wake up a few people!!
62
Open Forum / Re: The Air Derby
« Last post by Dan McEntee on July 16, 2025, 10:05:53 PM »
+1!   I learned to fly on a WenMac.   They are powerful and can be less troublesome than reed valve Coxs.   I have several here now.   I need to have a half A day and load up my pile and go have some fun.  The older ones WITHOUT the heavy starter gizmo on them are the best in my opinion.

Dave

   I keep threatening to do something with some WenMac/Testors engines, maybe do that soon. That "Roto-Matic" spring starter can be removed if you get some that are stuck, or something is broken. I took one apart that wasn't working just to see what made them tick, and they are pretty simple sprag mechanisms. They get stuck from congealed castor or the main spring breaks. The stuff in the back half can come off and the front part then serves as the prop drive washer. Guys have been using the Wen-Mac and Testors engines in nostalgia f/f models for any years. I have always wanted to do that little twin stunt model that Pappy DeBolt published in Air Trails and it's even OTS legal!!

  Type at you later,
    Dan McEntee

   
63
Open Forum / Re: 2025 Nats Qualification Groups, scores and final reports
« Last post by RC Storick on July 16, 2025, 09:40:44 PM »
I would agree that the airframe is not how we should define realism.  Cockpit interiors, panel lines and that kind of stuff is what I would call adding realism.  Maybe just keep it as it is and work up some guidelines that give official recognition for things that are above necessity.

Ken

Absolutely, a doable thing. I am sure there will be some whining, but it puts this event back to the spirit of the sport, which is a modeling event and not just a fling event. For that event, there is FAI
64
Open Forum / Re: 2025 Nats Qualification Groups, scores and final reports
« Last post by RC Storick on July 16, 2025, 09:35:22 PM »
   I would rather strongly object to the "realism" standard. Form follows function, and CL has nearly no correlation to full-scale aviation. I do not want to be tied to trying to emulate a real airplane - even though most of the designs I have considered are fairly reasonable to envision as real airplanes.

    Brett

I agree with you, but it was asked what the categories were. Things like cockpit detail and panel lines can be considered as factors for realism.
65
Classifieds / Re: Assortment of Control Line Items for sale
« Last post by wwwarbird on July 16, 2025, 09:23:50 PM »
Just added:
Brand new J Roberts three line handle. New, never used.

$20.00.

 PM sent.
66
Open Forum / Re: The Air Derby
« Last post by Colin McRae on July 16, 2025, 09:03:11 PM »
and go have some fun

Dave

Dave, I agree

After all, this is 'supposed' to be a hobby

67
Open Forum / Re: The Air Derby
« Last post by Colin McRae on July 16, 2025, 08:49:06 PM »
Those were the good ole (and simple) days.

But fast forward 70+ years:

Horizontal CG
Vertical CG
Model weight
Wing tip weight
Lead out location
Lead out spacing
Engine thrust direction
Prop diameter
Prop pitch
Prop airfoil
Fuel oil content and type
Fuel nitro content
Wing loading
Wing airfoil design
Fuel tank volume
Fuel tank design
Handle design
Line design
Line length
Lap time
Ground rpm
etc
etc
etc

And that is just for IC powered models.

Then there are all the additional parameters involved with electric powered models!!!

 ;D
 ;D
 ;D





68
Open Forum / Re: 2025 Nats Qualification Groups, scores and final reports
« Last post by Ken Culbertson on July 16, 2025, 08:07:18 PM »
   I would rather strongly object to the "realism" standard. Form follows function, and CL has nearly no correlation to full-scale aviation. I do not want to be tied to trying to emulate a real airplane - even though most of the designs I have considered are fairly reasonable to envision as real airplanes.

    Brett
I would agree that the airframe is not how we should define realism.  Cockpit interiors, panel lines and that kind of stuff is what I would call adding realism.  Maybe just keep it as it is and work up some guidelines that give official recognition for things that are above necessity.

Ken
69
Open Forum / Re: 2025 Nats Qualification Groups, scores and final reports
« Last post by Brett Buck on July 16, 2025, 07:46:46 PM »
   I would rather strongly object to the "realism" standard. Form follows function, and CL has nearly no correlation to full-scale aviation. I do not want to be tied to trying to emulate a real airplane - even though most of the designs I have considered are fairly reasonable to envision as real airplanes.

    Brett
70
Open Forum / Re: 2025 Nats Qualification Groups, scores and final reports
« Last post by RC Storick on July 16, 2025, 07:41:28 PM »
    And maybe throw in some bonus points for spelling and grammar!!! LL~ LL~ LL~ LL~ LL~ LL~

   Type at you later,
   Dan McEntee

Shoot, I didn't know this was a spelling contest. Guess I'll have to brush up on it.
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