The LAST Thursday Show! (Q/A) Class 12
Posted April 3rd, 2009 at 07:14 AM by ThursdayBeginnerBlog
Questions covered in the video:
DalToN_001 asks:
Some beginner plains have a V shape wing (see from the front) with no ailerons. Could you talk about the dihedral angle of the wing, what is the effect on the airplane’s maneuverability?
ANSWER: In short, the V-shaped dihedral gives the plane more stability and less maneuverability. It also allows the plane to "roll" with rudder input, this is why they can get away without having ailerons.
ApOsTle51 asks:
Is it better to run a receiver with a separate battery pack or run it from your ESC?
Are you gonna do a how-to vid on fitting rudders to a duel stabilizer fitted jet ( like the fa-18) ?
ANSWER: For electric planes, its most common to use just the main battery to the ESC, this saves weight by not adding an extra battery.
ANSWER: There really is no "one way" to do it. Just set them up the best you can and if you don't like, don't be afraid to try it another way.
JD_Flyer asks:
You talked earlier about how rudders are so important. How come you didn't design rudders into some of your thrust vectoring jets? Is the weight penalty that great?
ANSWER: Yes, I did not put them on because of weight, space, and simplicity. We noticed that the simpler (less servos planes had) the more the sold. I have since gone the other way and put moving rudders on ALL my planes when possible! I need the extra control in wind and slow flying.
anybodykilla58 asks:
question. going out to some of the meets in my area, I've seen some people using actual jet engines on their RC planes, other then the obvious speed factor is there any benefit to going with a jet engine over electric (ducted fans or props)
ANSWER: The turbine jets are very powerful, loud, expensive, and complicated. They are way out of our league. We need to stick to electric and simple for where we live because flying space is so limited here.
mgrande11 asks:
How about the cg balancing of warbirds that are low wing and do you check cg at wing root or wing tip
ANSWER: Keith says that Paul says to hold the plane upside down and then hold it towards the inside of the wing to balance it. But again, finding the CG is really a matter of performance and what works best for you.
MartySchrader asks:
Dave, you might want to address the differences between two and three cell packs and what impact they have on motor current versus prop size. I size almost everything for two cells, so I end up using stiffer props than I would for a three cell. It's a valid subject.
ANSWER: A 2 cell battery (7.4v) is great for lighter slow flying planes. The larger heavier 3 cell (11.1v) is good for faster planes. If you just like to float and fly, you might try the cheaper 2 cells!
annihil8ted asks:
hey dave how far can a cg be aft with a gyro?
ANSWER: About as far as I have gone is about 1/2 the wing. Any farther and I would think too much DOWN trim would be needed by the elevator thus causing too much drag just to get the plane to fly straight and level. Though, I think the gyro is able to have your CG even farther back if you were up to something really weird. We have NOT test gyros to the limit by any means.
Total Comments 1
Comments
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Nice work man, i really enjoy your videos just keep it up
Now, how about a cpl of minutes that include chamber(or chambering) and snap-flaps ?
Fly it till it dies !Posted August 24th, 2009 at 04:14 AM by Dreamglider 
