prop balancing

[Slyfox]

I thought I would start a new thread in case this got on a huge discusion. I balanced my prop and found that the vibration 1.3 ips on my rotax was way too much. I spent more time putting the degrees on the hub so that when I started balancing, I could just look up the heavy side of the hub and weight on the opposite side. Made life real easy. I got things down to .73 ips, still have some more to go, just need to find a better weight to use. I figure I'll get some wheel weights and nut and screw to the spinner so no unsightly washers will be showing. Next weekends project.

Advantages are a smoother flying airplane, real smooth and I'm not done yet. There is no more fuel smells and the engine runs great. I figure what was going on is the fuel was moving around in the bowls so much that the needles were opening and flooding the engine. I am real satisfied with the results.

I have the dynavibe if you go here it will explain the procedure. You can get this through aircraft spruce.

steve

[futureflyer]

Steve
We use these products at work for balancing compressor and turbine rotor assemblies ,www.schenck-usa.com/weights_clips.html, incase wou wanted something a little more precise.

Matt

[Slyfox]

actually I'm feeling cheap right now. So I went into my fish supplies and took a spit shot sinker and hammered it flat. Than I will drill a hole in it and install it on the back of the spinner. All that will be showing is a small screw on the outside. When done I will be able to remove the spinner without the worry of loosing the balance. It will also look nice. Also I can take a pair of dikes and modify the weight for a nice balance. thanks for the link anyway.

[TGio]

Steve,
I found a good reference on attaching weight to the spinner and a formula for the amount of weight needed to balance. Have not tried it, but it is FAA accepted. Heres the link: http://www.acessystems.com/downloads/manual-gpb/gpb.pdf

Thomas

[Slyfox]

good find, thank you.

steve

[Caballo]

Thanks Chase. It is still in the box it was shipped in but I have placed it in the horizontal position for now. I will take it to Las Cruces and have it balanced before I install it later this year.

[Caballo]

For years my wooden prop was stored in the parallel position, but is has been stored in the upright position for a few years also.

For the Mod.III with a 582 engine, is there a prop that is less prone to deterioration and vibration over other types and brands?

[SkyPirate]

it's not good to store wood props in the upright position ,..although some might disagree,..you might need to have it balanced,..depends on your humidity,..if the place it was stored was hot,..etc,..if you can always store a wood prop on a flat surface spinner side up.

Chase

[Caballo]

After many years of inactivity with my Mod.III, (582LC) I am preparing to begin construction again. I ordered a wooden prop with the kit back in 1991. Any pos or cons with this prop (balancing, integrity, etc.)?

Mark
Mod.III (#1050) Kitfox

[SkyPirate]

how did you store it?