Thread: Discussion Skywalker 168cm FPV plane
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Old Jun 16, 2010, 03:11 PM
LFLoTiTo is offline
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Just want to fly...
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Brazil
Joined Mar 2009
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Quote:
Originally Posted by VAMountains View Post
Prepare to be amazed by my idiocy; I do this only so that others don't make the same mistakes.
Those are not idiot but commom mistakes that you need experience to learn. Thanks for sharing and preventing others from doing the same.

Quote:
Originally Posted by VAMountains View Post
Unfortunately, I think I might be the only one that put the ESC in the little ESC-shaped nook/compartment between the engine mount and the upper open compartment. I don't have a picture, but there's a slot that fit my Turnigy Plush 40amp perfectly. I regret it now because it can't be removed without some disassembly, and there's no airflow in there. Now I'm going to have to cut it out... carefully. Why is the nook there given these disadvantages?
When done properly, those empty spaces save weight without significantly reducing the frame strength. They also reduce mass production costs, as less material is needed.
The top compartment also has no ventilation, which might be an issue depending on your set-up. You might want to drill a couple of air in-takes or use an over-rated ESC that will dissipate the heat easier. I did both...

Quote:
Originally Posted by VAMountains View Post
While I'm 'fessing up to my embarrassing assembly decisions in the hopes that others don't repeat them, I also want to ask why has no one put the GPS chip in the little compartment right over/behind the nose? It fits there perfectly, protects the chip, and provides LOS to satellites overhead. It seems like a great place, but I assume I'm missing something because I haven't seen anyone else put it there.
GPS receivers are often affected by video TX and some cameras which usually go on the canopy. This might reduce its ability to get satelites or even to get a lock position. Putting the GPS antenna away from theses sources greatly increases its sensitivity.

Quote:
Originally Posted by VAMountains View Post
Oh yeah, and one more thing for fellow newbz. Don't glue the wooden disk to the foam engine mount before you mount the engine. Initially, I thought that I'd be able to drill into it with self-tapping screws after gluing the disk in place to secure the engine, but quickly learned that I needed metal receiving nuts (wrong terminology I know) on the back to hold it in place, even with lock-tite. I had to fashion another wooden disk, mount the motor, and then glue that disk the first one (which can't be removed without an act of demolition). It looks a little ridiculous.
You need a self taping screw specifically designed to hold on wood. It has deeper and more spaced threads that should hold your motor mount properly. It is best to pre-drill a 1mm hole to set the path and put a drop of CA to strenghen the wood around it before you insert the wood screw. Be carefull not to overtighten it or you will loose its ability to hold it.

TechSpy,

The OSD Pro handles heading, altitude and thrust/speed, while co-pilot stabilizes the plane. They are complementary tasks, but performed independently, meaning that the OSD doesn't interact directly with the co-pilot (yet). My plane did not need to enter in climb mode during RTH (so it did hold alt ok) but if the altitude goes below the designated minimum, the OSD will increase power and pull elevator to climb back to cruise altitude (I successfully tested this as well).

Although this plane is supposely self stable, I would not trust any auto-pilot without a stabilization system.

Cheers,
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Last edited by LFLoTiTo; Jun 16, 2010 at 03:34 PM.
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