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Hot Topic (More than 10 Replies) The various divisions of Free Flight models (Read 8316 times)
Sky9pilot
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Re: The various divisions of Free Flight models
Reply #19 - Mar 12th, 2021 at 3:35pm
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PISTACHIO SCALE:
Open to any scale free flight rubber powered model of either not more than 8" span or not more than 6" overall length excluding propeller. The minimum documentation is as follows: (a) A general arrangement drawing of at least two inches wingspan but not more than twelve inches wingspan.
  

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Sky9pilot
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Re: The various divisions of Free Flight models
Reply #18 - Mar 12th, 2021 at 3:28pm
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Coconut Scale:
1. Recognizable rubber powered scale model, with a max. 36-in wingspan for a monoplane, 30-in wingspan for multi
wing.
2. Minimum weight 1-ounce (28.35 grams) without rubber.
3. Built-up fuselage.
4. Scoring: Static
  

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pb_guy
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Re: The various divisions of Free Flight models
Reply #17 - Feb 10th, 2021 at 2:18pm
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There is a vague mention of multiple wings here: https://www.hippocketaeronautics.com/ff_in_bostonian.htm
Quote:
The model must weigh at least 14 grams without rubber motor for a monoplane, 20 grams for others.

I looked at the plans for the StaggerWink bostonian and it is 3" x 16" for each wing. I think that the multi-wing aircraft have their minimum weight doubled though for contests. I designed and built a bostonian triplane some years ago. Not for any contest, but just to try out the design.
ian
  
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Re: The various divisions of Free Flight models
Reply #16 - Feb 10th, 2021 at 1:47pm
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Are  there any hard rules on biplane bostonians? I have seen a number of suggestions but nothing concrete. The maximum chord of 3 inches would suggest that biplanes are not viable.
  
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Sky9pilot
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Re: The various divisions of Free Flight models
Reply #15 - May 7th, 2020 at 9:11pm
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Bostonian Model Rules
Here's a PDF of the AMA Bostonian rules for indoor Free Flight (always capitalized) model airplanes.

Here's the first five rules on the list:

1)Maximum projected wingspan shall not exceed
16 inches (40.64 centimetres).
2) Maximum wing chord (measured parallel to he
direction of flight) shall not exceed three (3) inches (7.62 centimetres).
3) The diameter of the propeller(s) shall not exceed six (6) inches (15.24 centimetres).
4) The length of the model excluding the propeller(s), but including the thrust bearing(s),
shall not exceed 14 inches (35.56 centimetres).
This measurement will be made in the direction of flight and, will include surfaces, which extend beyond the thrust bearing or fuselage end because of a sweep or unusual mounting.
5) The fuselage structure must include a box, which has minimum dimensions of 1.5 inches x 2.5 inches x 3.0 inches (3.81 centimetres x 6.35 centimetres x 7.62 centimetres). The width (the horizontal dimension perpendicular to the line of flight) of the fuselage shall not exceed three inches (7.62 centimetres). The box must be enclosed within the fuselage structure and must be covered so as to restrict free air movement through the box. Normal sag of the framework between supports caused by the tension of the covering will not be considered as a violation of this rule.

For the full rules click on the PDF below.
« Last Edit: Feb 10th, 2021 at 11:26am by Sky9pilot »  

Bostonian-General-Rules.pdf ( 50 KB | 76 Downloads )

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Sky9pilot
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Re: The various divisions of Free Flight models
Reply #14 - Aug 30th, 2019 at 6:19pm
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Manhattan Cabin indoor model airplane class.  I was reading today about this class of model Free Flight airplanes/contests and didn't know what it referred to.  I found this excerpt from Google Books - Building & Flying Indoor Model Airplanes... I've included the excerpts in PDF and here's the link to the full book: Click Here
  

manhattan_cabin.pdf ( 409 KB | 82 Downloads )

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Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Sky9pilot
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Re: The various divisions of Free Flight models
Reply #13 - Aug 20th, 2019 at 8:54pm
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Found this on the net regarding some books published on model airplanes: Published in the U.S. by Anderson Publications, 1998. Volume 1 (1907-1935)Dawn of American Aeormodeling, Volume 2(1935-1941)The Boom Years, Volume 3((1941-1949)War and Evolution and Volume 4(1949-1965) Transition.)I think it's probably a pretty good ballpark range of Golden Age Model Aircraft.
Tom
  

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Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Re: The various divisions of Free Flight models
Reply #12 - Aug 20th, 2019 at 6:35am
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Very much enjoy reading about these divisions of modelling but am a bit confused about the "Golden Age of Modelling". Is there any definitive or near definitive definition of Golden Age?
Mike
  

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Sky9pilot
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Re: The various divisions of Free Flight models
Reply #11 - Aug 19th, 2019 at 5:49pm
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Stagger wing is a great looking aircraft.  I look forward to following your build in the current builds board.
  

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Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Re: The various divisions of Free Flight models
Reply #10 - Aug 19th, 2019 at 1:59pm
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Thanks Tom

After thinking about it for a while that’s what I came up with.  I just couldn’t imagine 2 layers of covering.  I think my next project will be that Beechcraft Staggerwing I started years ago.  It was for a cookup on SFA.  Got the whole fuselage finished.  Went to work for a week and came home to a pile of match sticks.  The cats decided it would be fun to chew it up.  They’re lucky to still be alive.  I now have a pet free workshop to play in.

Stuart
  
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Sky9pilot
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Re: The various divisions of Free Flight models
Reply #9 - Aug 19th, 2019 at 11:45am
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Stuart wrote on Aug 19th, 2019 at 10:13am:
“E. Coverings:
1. Double covering required unless original era plan specifically states "single covering."
2. Single covering OK if original era kit supplied just one set of wing insignias or markings.”   
What is double covering? 
Thanks
Stuart

Double covering I believe is referring to covering both the top and bottom of the wings and stabs unless noted otherwise on the plan.   Some models like NoCals just have one surface covered like the tops of the wings with no covering on the bottom of the wings.  Some indoor models are similar.  But the referrence you've noted is the Dime Scale rules which are models that have very simple construction but represent real aircraft.  Unless the real aircraft was covered only on the upper surfaces...then both surfaces require covering.  In regards to markings (national insignias, numbers etc.) If the plans only gave enough markings for the topside then that would be all that was required for competitions.  Remember these rules are for those who want to compete in "Flying Aces Club...'FAC'" competitions.
  

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Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Stuart
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Re: The various divisions of Free Flight models
Reply #8 - Aug 19th, 2019 at 10:13am
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“E. Coverings:
1. Double covering required unless original era plan specifically states "single covering."
2. Single covering OK if original era kit supplied just one set of wing insignias or markings.”

What is double covering?

Thanks

Stuart
  
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Re: The various divisions of Free Flight models
Reply #7 - Feb 19th, 2019 at 7:21pm
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I meet up with Rich Weber and other fellow free flight models on Saturday morning for build sections. Great guy.
Paul
  
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Re: The various divisions of Free Flight models
Reply #6 - Feb 6th, 2019 at 11:49am
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The latest issue of the FAC Newsletter has more clarification on Dime Scale/Pseudo Dime Scale plans...I'll try to scan and post the updates.

Tom
  

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Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Re: The various divisions of Free Flight models
Reply #5 - Feb 1st, 2019 at 11:14am
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Check out our sister site Free Flight Archive's Plan Gallery: Click Here
Tom
  

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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