Guys,
What are the results of using props of a different pitch? What are the effects of going either way with the pitch? Engine runs faster/slower? Speed affected? I'm flying a Banshee with Magnum 32 with 10/4 prop and she's really fast for me. I'd like to slow it down. Pardon my ignorance, but I would appreciate your input.
Thanks,
Gene
...snip... then if I think I need to speed up the model to help with line tension and such, I start shortening the lines a foot at a time and sneek up on the optimum lap time for that model.I think Dan meant to say if he wants to spin faster he shortens the lines....
...snip
Dan McEntee
I know Dan knows this but it didn't come across right. Shortening the lines doesn't make the plane go faster--it just makes the rotational time shorter--the spin rate if you will.
Its like Dan says: use the prop to get the speed of the plane sufficient to fly properly while the engine is "happy", then adjust the "spin rate" with the line length.
Heavier planes need to fly faster than lighter planes of the same design so the wing can generate enough lift.
As you lengthen the lines, the tension decreases directly. As the speed of the plane decreases, the tension also drops but as a squared function.
In the ranges we fly, a one foot line change will make APROX 0.1 sec per lap change.
Now here is opinion based on the info you provided and observations of other Banshee (Banshi?)
The plane will fly pretty well on .015" thou braided lines out to at least 62' perhaps longer if the trim is good and the plane is light.
If you have a 10-4 on it, you might try a 3.75 pitch if you can find one.
Else try setting the needle slightly slower before launch--try it just on the fast side of the point where it is breaking from 4 to 2 cycle.
Finally, if all of this is a bit much--try to find an experienced CL flyer to help you
Have Fun
Curt
Thanks Dan,Hi Gene;
I'm using 60 foot lines and using a telephone pole I count off about 4 1/2 to 5 second laps. Not very scientific. I don't know nuthin' 'bout no RPM's. How would one determine the RPM's of your engine? Maybe it's a matter of I need to get used to the speed and work through the dizziness. I really like the tight lines and the pull and when doing a loop, there's no hesitation whatsoever. Really smooth. I might try some different props to see the difference.
Thanks, Gene
The Magnum 32 XLS I have is, for some reason, a much faster running motor than the 36XLS. Not quite sure why.
The Magnum 32 XLS I have is, for some reason, a much faster running motor than the 36XLS. Not quite sure why.
HH%%
Bill, first off let me say that last time I checked I was a fully emancipated adult and as such entitled to make comments without obtaining permission from you. Like me, you're just another pretty face on this forum and I don't believe you have been elected "hall monitor" yet. It was a weak attempt to provide some levity... if you don't like it I suggest you scroll down to the next post.
Dick Fowler and "Shultzie"
Would both of you please accept my apologie. My comment was totally out of line, of course you are a fully emancipated adult and as such completely within your rights to speak your mind , Dick. I am not by any means setting myself up as hall monitor here, thats "Bill Littles' job. At this point in time my mind is completely off the wall.We just welcomed #2 son home two weeks ago from Afghanistan and I am waiting for a connecting flight to Kansas City to see #1 son off to Iraq tomorrow morning. Life at this point is not good.
AGAIN please accept my apology for my statement, it was out of context for me. If you look back at the reply you will see that I have edited it out. I do not wish to rile anyone because of my thoughts at this time, theey are not really where they should be at this time. Thank-you.
"Bill Gruby" ::)