Laser / Turbo prop build

[McFueler]

We could take the LG from a 50% airplane and cut wings for smaller planes !!!!

[forgues research]

	Quote: Originally Posted by McFueler
	We could take the LG from a 50% airplane and cut wings for smaller planes !!!!

I was looking at making a short bow to cut the holes when I suddenly realized I have this landing gear doing nothing, I made some nylon bushings for each end , put in some 10*32 eye bolts at each end installed the wire as tight as I could then tightened the eye bolts , put the wires on it and adjusted the variable transformer with an ameter to get about 11 amps, and voila,,, the best thing is it works...

Roger

[forgues research]

while some of the glue sets on the wing panel, I made another wing tube socket but this time took some pictures as I went along...

Any questions, just ask...

Roger

[forgues research]

Before I made the tube socket, I made a little test stand to see how a 7806 regulator would stand up as I am using one of these for each servo in my airplane instead of going to the high priced single units.

The results so far using a Multiplex Jumbo digital servo with 300 in/oz of torque connected to a heavy weight of metal you see in the photo. has been running non stop for well over two hours so far with a servo excerciser set at high speed.

After two hours, the 60 cent regulator is barelly warm to the touch and it is covered with a heat shrink wrap you see here in green..
In the second picture, I added the extra weight you see here and this is the weight its been with for two hours and I will leave it there for most of the day...

Roger

[McFueler]

	Quote: Originally Posted by forgues research
	Before I made the tube socket, I made a little test stand to see how a 7806 regulator would stand up as I am using one of these for each servo in my airplane instead of going to the high priced single units. The results so far using a Multiplex Jumbo digital servo with 300 in/oz of torque connected to a heavy weight of metal you see in the photo. has been running non stop for well over two hours so far with a servo excerciser set at high speed. After two hours, the 60 cent regulator is barelly warm to the touch and it is covered with a heat shrink wrap you see here in green.. In the second picture, I added the extra weight you see here and this is the weight its been with for two hours and I will leave it there for most of the day... Roger

Happy to see it is working !!!

[Rod]

The individual regs seem like a great idea. What is the current draw when excercising the servo? Also, nice prop. Are you designing them yourself?

[forgues research]

	Quote: Originally Posted by Rod
	The individual regs seem like a great idea. What is the current draw when excercising the servo? Also, nice prop. Are you designing them yourself?

Upon lifting the 4 lbs weight it pulls about one amp. I let it run for 5 hours non stop at the highest speed the excerciser would let it.

When I shut it off, the regulator was still barely warm ...They can easily support 3 amps for short bursts, so one per servo is not going to be a problem...

Also you are getting some redundancy having one per servo instead of one for the whole bunch...

As for the prop, no I don't design props as some others have claimed. I designed and built a duplicator and use a variety of props to copy from , not for resale just for my own use.

The one you see here is a copy of a Biela 26*10, costing me $5.00 of beach wood plus my time.

I recently made a 36*12 like this for the 300cc engine, the cost was $10.00 of beach wood.

Roger

[forgues research]

Here I have installed the sheeting on the top before cutting the bottom part.

I am using white carpenter's glue, giving me plenty of time to layout the glue , put the sheeting on and then I put reseallable lunch bags filled with sand so they easily take the shape ..

Roger

[McFueler]

I like the small sand bags !

[forgues research]

	Quote: Originally Posted by McFueler
	I like the small sand bags !

Thanks Mark, anything that works is not always in a hobby shop

Roger

[sensei]

Hey Roger,

This is a great build thread.

Bob

[forgues research]

	Quote: Originally Posted by sensei
	Hey Roger, This is a great build thread. Bob

Thanks Bob it is slow but getting there

Roger