Home › Forums › Free Flight › All Gas › The New 1/2A
- This topic has 40 replies, 18 voices, and was last updated 11 years, 9 months ago by Dean McGinnes.
12/30/2009 at 2:15 am #41287
Here is a pic of the beginnings of the 1/2A- The wing has 4 dihedral breaks, so I need a right mid panel and right tip to complete. It is overbuilt, but I wanted to make sure that it didn’t move-
The stab will have 1 1/4″ inches if dihedral…Not your normal 1/2A-
Just an experiment, with many things sucked over from F1J and J- 7% flat bottom section- Max thickness in the middle is about .480″…
12/30/2009 at 12:36 pm #48362nffs-adminKeymaster
Very nice, reminds me of Norm Poti’s Niblite12/30/2009 at 6:24 pm #48363
Thanks Charlie…It sure is wierd not having one piece of carbon in a wing…However, the fuselage will be different- I have pretty much made up my mind that it will be a carbon alum tailboom.
But still, not auto stuff- I may regret it but that is how it is going so far.
The sketch shows the general planform…
12/31/2009 at 2:28 pm #48364Steve LandyParticipant
Looks like a fascinating airplane. Keep us posted on progress, especially the flight trimming. I’m just starting to update my approach from the ’70’s style.
Regards, Steve12/31/2009 at 11:17 pm #48365AnonymousInactive
Looks like it might be a go’er John. Cyclon for noise?01/01/2010 at 3:01 am #48366
Nope, at this time looks like a VA…But, after seeing the last issue of the Digest, I may try a Fora. Looks sorta interesting…..Cyclons have gotten out of hand money-wise- Glad we have the four or five we have…01/01/2010 at 7:39 am #48367AnonymousInactive
So John what covering are you anticipating?01/01/2010 at 2:26 pm #48368AnonymousInactive
John do you mean a Profi engine? I have one and have and it does run well. It’s not a Cyclon but it doesn’t cost $250 either. I’ve been getting about 28,000 RPM runing an APC 5.5 X 2 prop on 40% Omega fuel.01/01/2010 at 10:05 pm #48369
Yup, that is what I meant!! Sori….It is some foreign job…
As far as covering- good question- I really would like to cover it in tissue to get the strength, but then a synthetic may be OK…Just not sure yet!01/02/2010 at 3:50 am #48370Dean McGinnesParticipant
John, try tissue over mylar. I am a new convert. 😀 😀01/02/2010 at 5:02 pm #48371
Progress is, well, progressing-
Found an old F1J frontend I had made up with fiberglass instead of carbon and, with a few modifications, was able to make it work for the new design. Cut the top off and made a wing platform. Then found a tailboom that fit it perfectly. Sawed it off and added the bottom fin-
Still have a lot to do, but things are moving along-
Timer-wise, am still debating on either a Texas Timer or a Mini-combo- Still tbd…
01/02/2010 at 5:27 pm #48372Lee HinesParticipant
OMG! Too early for the trash can! 😛 😆
Seriously[who me?] it’s looking quite fine in its undressed condition.
Leeper01/02/2010 at 6:20 pm #48373AnonymousInactive
John, that is looking really fine… Have you considered keeping notes for an article in MA ? After test flying and such…01/03/2010 at 1:17 am #48374AnonymousInactive
How about this for the get up and go section….
01/03/2010 at 11:28 am #48375AnonymousInactive
The 1/2 A looks the business nice under fin as well
the geo wing should be more than stiff
enough, I use icarex pc31 for pretty well
all my f1j to f1c power models.
The last post of the Dixi is done in it
I have used thinned down dope 50 x 50 of acrylic
laquer tinners, does not tend to warp it gives a drum tight
finnish that takes the knocks
Tissue has its merrits, but punctures easy & makes
a good looking model shabby in no time
I use 2 pac clear on the inner 4 rib panels of each wing
this stops the fuel from soaking thro the cover
& weight is no prob
Will be great to see it finished & flying
The weather here is 40deg!!!
Not long now to Max Men!!!
Cheers from Downunder
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