ORIGINAL: combatpigg
Howdy Lou....
I just eyeballed the airfoil. I've found that the smaller you go in size and weight [at least with RC planes]..the airfoils become less critical. I've never spent any time to speak of with control line stunters this small, though.
Until I see this thing fly, my thinking is that ''speed is my friend''.......then I'll have something to go by if it ends up being too fast to do a recognizable pattern with.
Might have to take some pitch out of a MAS 7x3 prop...?
The tank is a Hayes 2 ouncer, which is the most trouble free I've found in this size. It better be, because it's built into the plane now..!
Cutaway, after seeing this plane all framed up...it wouldn't look bad with more wing..maybe double or triple tapered....somewhat sportier looking. As it sits now it might fly more like a combat plane with a hot .09 diesel..?
I'll know better after seeing this thing fly whether I got it right or not. I'm hoping for a steady pulling plane that can keep me from biting my fingernails when I go for some overhead maneuvers.
After doing a little bit of snooping around I've decided to use thinned white glue and silkspan to cover the fuselage.
I've never tried thinned white glue before..only dope or polyurethane.
Then shoot it with silver Klasskote epoxy paint. The wing ought to be OK with silver monokote. Finding the ''right'' silver monokote is the trick. One variant shrinks nicely and is easy to work with...the other [aluminum.IIRC.?] is a *****.
Trying for a military look, it won't matter so much if it ends up a little bit ''rough''....
Hi Combatpigg, I guess there are several of us interested in this project. You can control lap speed(not model speed) with flying line length. Going to a lower
pitch will buy you higher rpms, resulting in lower fuel range. If you stay with a 3" pitch, you might give increasing the prop diameter a try.
I'm afraid your model is going to weigh 13+ ozs; at 198sq"s this model will not fly like a combat ship. Prior generation TD .049 Combat designs were usually 190-200+ sq"s,
and they weighed 4.5-6ozs resulting in very low wingloading. This is why I suggest you use operating flaps. I think this model will fly a decent stunt pattern, even at 13+ ozs.
John Wright used to fly a PDQ Flying Clown" in OTS powered by a .25(Fox??). His "Flying Clown" has 200sq"s wing area, but he used long enough lines that maximized it's ability
to fly the OTS stunt pattern; and I'm pretty sure that 200sq"s was carrying close to 20ozs. Yes, keep us abreast with your experiences, Because I do wish you the Best!
Tony