Laser / Turbo prop build

[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

[McFueler]

	Quote: Originally Posted by 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

Brakes ,,,,, what do you need brakes for ?

[forgues research]

	Quote: Originally Posted by McFueler
	Brakes ,,,,, what do you need brakes for ?

The way I drive lately to conserve gas, maybe I don't need brakes

[jack strickland]

	Quote: Originally Posted by forgues research
	The I drive lately to conserve gas, maybe I don't need brakes

By golly I think you guys have hit the nail on the head with a solution to the energy problem, everyone must disconnect their brakes in order to save fuel. Great idea.

[3Dguy]

	Quote: Originally Posted by jack strickland
	By golly I think you guys have hit the nail on the head with a solution to the energy problem, everyone must disconnect their brakes in order to save fuel. Great idea.

The money you save can go to your insurance premium.

[forgues research]

	Quote: Originally Posted by 3Dguy
	The money you save can go to your insurance premium.

You just rained on our parade

Roger

[3Dguy]

Sorry lol.

[forgues research]

This morning I have the landing installed,

Roger

[forgues research]

Well after spending 3 hours on the property for lawn care, I decided to cool down by getting back on the Laser.

I made a bunch of 1/4 square balsa and trial fitted with the bulkheads , so far it is good to go for gluing..
I hope to get back on the wings soon but still waiting for the sheeting.

Roger

[zzw26n]

	Quote: Originally Posted by forgues research
	This morning I have the landing installed, Roger

The extra mounting holes on the Gear? from another Plane?