Hip Pocket Builders' Forum

Indoor Free Flight Forum => General Discussion => Topic started by: jose12 on October 24, 2020, 07:26:20 PM



Title: Vuelan bien los modelos de Comet?
Post by: jose12 on October 24, 2020, 07:26:20 PM
Hello friends my question is: are they good flyers or at least flyers? Comet models the dime scale and the dime scale. The Comet kits did not arrive here in Argentina and I hope to build them from the published plans, as you advise me. I built it but still due to the pandemic I did not fly with Aeronca and two Nonocoupes, sorry for my bad English. Hugs jose


Title: Re: Vuelan bien los modelos de Comet?
Post by: skyraider on October 25, 2020, 03:05:58 PM
Hello Jose12,
      Yes there are Comet models that fly. However it actually depends on the skills of the builder and if
you intend to fly indoors or out. Building experience does play a roll as with all building. If your new to the
Comet's, I'd suggest starting out with something easy to begin with and as you gain more experience choose
something a little harder. Small steps as you go.

Skyraider


Title: Re: Vuelan bien los modelos de Comet?
Post by: jose12 on October 25, 2020, 05:28:38 PM
Hello, I answer Skyraider, I have experience in building models, what happens is that in Argentina there are very few Comet kits that have arrived and I did not have the opportunity to build any or to see any built and flying; so my question.
In particular I was referring to the ones in the dime scale series. Since it is a size that interests me because of the difficulty of obtaining materials to build them in my country. Another question, studying the planes I have seen that almost none of them show a positive incidence on the wings and it is also 0 ° on the stabilizer. Would it be necessary to give any impact on the 10-cent models, for example 2 ° or 3 ° in wings and in terms of the stabilizer something negative. My idea is to fly them outdoors.
Greetings and thanks for the answers José12


Title: Re: Vuelan bien los modelos de Comet?
Post by: faif2d on October 25, 2020, 06:11:37 PM
I have built a number of the comet dime kits.  As you have noted a number of them have 0 degrees in both wing and stab.  I have had to modify them to 2 or 3 degrees difference between those lifting surfaces.  Your second note shows that you are aware of this error in those kits and that you know how to correct that error.


Title: Re: Vuelan bien los modelos de Comet?
Post by: lincoln on October 25, 2020, 06:47:43 PM
I've seen the Farman Stratoplane fly very well. OTOH, the Aeroneer, which I built, is frustrating and I haven't got it to fly right yet. The dime scale Guillow Porterfield Zephyr flies ok, but of course it's not a Comet. Rumor has it that the Puss Moth is a good flyer. I've seen the Allied Sport do very well when flown by experts, but with the larger span, it's not legal for FAC dime scale events. I'm sure many of the others fly well.

I've read that the Curtiss Airmail Biplane is actually a design by Dave Stott in the Comet style, in case that matters to you. Many other pseudo dime scale models have been done in more or less Comet style, but I think it's usually easy to tell.

As with many other models of this era, the motor pegs are usually too far back and the nose blocks are inconvenient for stretch winding or even for putting the motor in. You may want to rearrange these.


Title: Re: Vuelan bien los modelos de Comet?
Post by: atesus on October 26, 2020, 03:24:33 AM
I built the Fairchild 24 (kit #A-166) and it was a flyer. I lost it OOS pretty quickly.

Not a dimer, but I also built the Allied Sport. It was a reliable flyer, looks pretty cool too. Here's a video of mine:
https://youtu.be/4qVBubKsHMM

--atesus


Title: Re: Vuelan bien los modelos de Comet?
Post by: jose12 on October 26, 2020, 05:22:38 PM
Friends, thanks for your answers, they have all been useful to me, I hope more comments, I tell you that in my country all the materials to make model airplanes are very difficult to obtain since all the importation of them has almost been closed. I have some stoc and that is why I do not want to waste it, and that is also the reason that now I am dedicated to building small models, and I have found that the Comet 10 cent series was a good option. As you build I will show you what to do. Thanks again José


Title: Re: Vuelan bien los modelos de Comet?
Post by: Greg Langelius on October 27, 2020, 11:38:56 AM
Split bamboo can be substituted for balsa wood strips, and can be found in the form of bamboo window blinds (for long strips), or bamboo sushi rolling mats, for shorter ones. Bamboo can be bent to a curve when heated.

Styrofoam food package trays can be substituted for thicker balsa sheet wood.

Clear thin plastic boxes, like those used to sell baked goods including buns and rolls, can be used for windows and such, and can be plunge molded to make streamlined canopies, but this can be a complicated process.

When working with plastic and foam, avoid glues and cements that have strong odors. The foam and bamboo can usually be glued with the tan carpenter glues.

For tissue covering, I have had some luck using gift wrap tissue, and for clear finish on tissue, you may be able to do OK with acrylic floor finish or floor wax thinned with water.

All if these substitute materials can be a bit heavier than balsa, but are still better than nothing. Some materials, like thin cardboard, were used instead of balsa during WWII.

Greg


Title: Re: Vuelan bien los modelos de Comet?
Post by: TimWescott on October 29, 2020, 12:13:09 AM
Or you could drive to Equador and steal a balsa tree.  In true modeler fashion, you'd want to kiln dry it in your kitchen oven.

Greg's suggestions are solid ones, although I think that if I could get just enough balsa to build with it, I still would (although I may not drive to Equador to steal a tree.  Maybe).


Title: Re: Vuelan bien los modelos de Comet?
Post by: lincoln on October 29, 2020, 04:42:07 AM
It's possible to make nice light, very attractive models with extruded foam. You can see examples of what's possible at ffscale.co.uk . There are even instructions if you poke around there a little bit. Apparently, Highload 60 is the best material. Plazamate is the same material. I have a couple of pieces I wet sanded to an extremely smooth finish for a project I seem to have dropped. Wet sanding keeps the infernal dust down. I've seen a foam P-47 pistachio that would do about 45 seconds. I've also seen one or two other very attractive foam models.

If you don't have Plazamate or Highload in your area, maybe you have some other extruded polystyrene foam that's meant to take compressive loads. I think Highload is sometimes used under walk in refrigerators or even under roads!


Title: Re: Vuelan bien los modelos de Comet?
Post by: p40qmilj on October 29, 2020, 02:27:54 PM
 ;D Jose.

a number of dime scale comets have under gone conversions from the original to one piece wing and elevator assemblies making that simple change and a good nose block should be a good start.

jim ;D