Laser / Turbo prop build

[McFueler]

	Quote: Originally Posted by forgues research
	The large Edge is flown with the cowling on, I installed the engine this way so as to make it a hotrod Theme... I have made carbon Fiber mufflers for it but don't like the way they are installed so for now flying with no mufflers, a bit noisy but where we fly out of its not biggy... Roger

SSSWWWWEEEEETTTTT !!!!!!!! I like it !!!

[jack strickland]

	Quote: Originally Posted by forgues research
	With these pictures, how can you tell its not an ARF You will also notice on the wing picture, using a box type structure, I am able to simply turn the so called box upside down to do the other cut hopefully tonight. Can't do it alone.... Roger

Hi Roger, I may be getting a little ahead here, but how do you plan on keeping the wing tube from rotating when flying? I noticed you have a socket thru the fuselage. The way I do it is as follows: The tube slides thru the plywood, all 4 pieces, then I construct two ea. hardwood clamps and glue them half way to the inside of the inner plywood piece, there is a slit with a screw to tighten down on the tube. If anyone would like pictures of this method, please let me know.
Regards
Jack

[forgues research]

	Quote: Originally Posted by jack strickland
	Hi Roger, I may be getting a little ahead here, but how do you plan on keeping the wing tube from rotating when flying? I noticed you have a socket thru the fuselage. The way I do it is as follows: The tube slides thru the plywood, all 4 pieces, then I construct two ea. hardwood clamps and glue them half way to the inside of the inner plywood piece, there is a slit with a screw to tighten down on the tube. If anyone would like pictures of this method, please let me know. Regards Jack

Once the wing is in, and the wings bolted on, does it matter if the wing tube rotates, not that it will??

Can you explain?

Thanks Jack
Roger

[McFueler]

	Quote: Originally Posted by forgues research
	Once the wing is in, and the wings bolted on, does it matter if the wing tube rotates, not that it will?? Can you explain? Thanks Jack Roger

I was thinking the same thing ,,,,,, so I'm with you Roger it does not matter ,,,,, that is if it even does rotate and I don't think it will .

[jack strickland]

	Quote: Originally Posted by forgues research
	Once the wing is in, and the wings bolted on, does it matter if the wing tube rotates, not that it will?? Can you explain? Thanks Jack Roger

Hi Roger, will be glad to explain. The tube will most certainly rotate due to, I guess, vibration of the engine, and when you have a 10 year old plane you will see that the tube has rotated, and is, in fact, wearing out the sockets in the wings, the plywood sides, and the inner plywood the tube goes into. Hope this explains the problem. Just learned this from experence of flying this design for 23 years.
Regards
Jack

[forgues research]

	Quote: Originally Posted by jack strickland
	Hi Roger, will be glad to explain. The tube will most certainly rotate due to, I guess, vibration of the engine, and when you have a 10 year old plane you will see that the tube has rotated, and is, in fact, wearing out the sockets in the wings, the plywood sides, and the inner plywood the tube goes into. Hope this explains the problem. Just learned this from experence of flying this design for 23 years. Regards Jack

Makes a whole lot of sense, thanks Jack for explaining

Roger

[forgues research]

Here is a bit work done on the second wing, while I am waiting for the pony express for the balsa sheeting.

and some progress on the fuselage,

Roger

[KEITH RUSH]

Roger,

Looking good. Can't wait to build this myself. I hope you will show as much detail as possible with the wing construction of all stages. I've never built a wing this method before. Also, would you mind weighing the the finished wing panels. Just curious.

Thanks,

Keith

[jack strickland]

	Quote: Originally Posted by forgues research
	Here is a bit work done on the second wing, while I am waiting for the pony express for the balsa sheeting. and some progress on the fuselage, Roger

Looking real good Roger, you are a craftsman for sure.

[rkorenek]

Hello Everybody

I've been wondering about the wing's main spar. Obviously with the vertical grain balsa webbing and the hardwood spars, the main spar is very strong. My only concern is that the spar is not continuous. It is interruped by the foam rib. I'm wondering if this is something to be concerned about? Perhaps because of the length of the rib, its not a weakness at all. Any thoughts? Obviously building a wing with a continuous front and rear spar would greatly complicate the building process and perhaps would not buy you anthing.

Thanks again for the detailed pictures and construction techniques.
Randy

[forgues research]

	Quote: Originally Posted by KEITH RUSH
	Roger, Looking good. Can't wait to build this myself. I hope you will show as much detail as possible with the wing construction of all stages. I've never built a wing this method before. Also, would you mind weighing the the finished wing panels. Just curious. Thanks, Keith

Thanks Keith,
I will post as many photos as possible, and if anyone has some special request of photos I will do the best I can to accomodate.

I do plan on weighing the wing once finished...

Roger

[forgues research]

	Quote: Originally Posted by jack strickland
	Looking real good Roger, you are a craftsman for sure.

Thanks Jack, I appreciate it.

Roger

[forgues research]

	Quote: Originally Posted by rkorenek
	Hello Everybody I've been wondering about the wing's main spar. Obviously with the vertical grain balsa webbing and the hardwood spars, the main spar is very strong. My only concern is that the spar is not continuous. It is interruped by the foam rib. I'm wondering if this is something to be concerned about? Perhaps because of the length of the rib, its not a weakness at all. Any thoughts? Obviously building a wing with a continuous front and rear spar would greatly complicate the building process and perhaps would not buy you anthing. Thanks again for the detailed pictures and construction techniques. Randy

Hi Randy , I don't think its a problem but I would like Jack Strickland to chime in , as he has built a few of these and its his design...

Roger

[jack strickland]

	Quote: Originally Posted by rkorenek
	Hello Everybody I've been wondering about the wing's main spar. Obviously with the vertical grain balsa webbing and the hardwood spars, the main spar is very strong. My only concern is that the spar is not continuous. It is interruped by the foam rib. I'm wondering if this is something to be concerned about? Perhaps because of the length of the rib, its not a weakness at all. Any thoughts? Obviously building a wing with a continuous front and rear spar would greatly complicate the building process and perhaps would not buy you anthing. Thanks again for the detailed pictures and construction techniques. Randy

Hi Randy, good question. I can relate to you the strength of the spar, done this way, only in practical application. When one can do a tight 180 degree turn, a pylon turn if you will, with the engine wide open, and an airspeed of 132 mph, and do this many times in a 28 year period with 34% and 40% Lasers, I feel that the gap in the compression webs is of no concern. I for one would not try this with a foam wing.
Regards
Jack

[forgues research]

Didn't get much done today, as I have customers to take care of also, and repaired the brakes on my vehicle, but I am close to installing the landing gear...

Roger