is there any incedence on a big stick
02-20-2009, 09:47 PM
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is there any incedence on a big stick
Does any one know if a big or an ultra stick has any incidence on the main wing? I have designed a stick 25 size for an OS 20 I had kicking around. The plane has 52 in wing and is 45 in long weighs 2lb 15 oz. and has a wing loading of 13.8oz per square foot. I gave the wing 2 deg incidence. I guess I should have asked before I built it and I can’t fly it because it’s -12 out with a 30mph wind. On the pictures of an ultra stick it looks like it has some. Thanks.
02-20-2009, 11:24 PM
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RE: is there any incedence on a big stick
thanks. I built a ultra spad stick it has none but its a non Symmetrical air foil. This plane is thats why i gave it some. But i wasn't sure. I won't know until i go inverted. i guess i should have asked before i built it. again thanks.
02-21-2009, 11:51 AM
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RE: is there any incedence on a big stick
Hi
I love a stick! They are classics for very good reasons. As I understand the definiton of a stick is 0 degrees incident on both the
wing/ tail and motor.
Of course if there is a variation in the foil used, such as is common with Spads, a little compensation is a good idea.
One of my best flying buds is completing an Ultra Spad Stick at our weekly club build session. Looks like a winner to me.
I love a stick! They are classics for very good reasons. As I understand the definiton of a stick is 0 degrees incident on both the
wing/ tail and motor.
Of course if there is a variation in the foil used, such as is common with Spads, a little compensation is a good idea.
One of my best flying buds is completing an Ultra Spad Stick at our weekly club build session. Looks like a winner to me.
02-21-2009, 08:41 PM
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RE: is there any incedence on a big stick
your friend will love the ultra spad stick. The 28cc or 31 cc fly great. But the more power the better they fly 38cc is a good size.
I found plans for the kraft ugly stick and there is no incidence. but the big stick looks like there is some. I don't think a few deg will make much differnce. Untill you are inverted then you will need more down elevator i think any way. we are having a snow storm to day so i cant fly for a few days and glow engines don't like the cold. i found out.
I found plans for the kraft ugly stick and there is no incidence. but the big stick looks like there is some. I don't think a few deg will make much differnce. Untill you are inverted then you will need more down elevator i think any way. we are having a snow storm to day so i cant fly for a few days and glow engines don't like the cold. i found out.
02-22-2009, 09:59 PM
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RE: is there any incedence on a big stick
Oddly enough Phil Kraft’s original plan did show a tiny bit (1/2 of one degree) positive incidence. This article and plan were published in the May-June 1966 Grid Leaks. The Jensen kit (and I believe later published plans) show 0-0.
Other changes to the kit plan are the deletion of the cowl, pilot, dummy machine gun, and show a sheet vs. built-up vertical fin. Also the kit plan added dihedral to Phil’s flat wing. Otherwise, it’s pretty much a dead ringer.
Note that ‘Stik’ in the plan title block is spelled with a ‘C’ i.e., ‘Stick’, but is referred to as ‘Stik” throughout the article.
For what it’s worth,
al
Other changes to the kit plan are the deletion of the cowl, pilot, dummy machine gun, and show a sheet vs. built-up vertical fin. Also the kit plan added dihedral to Phil’s flat wing. Otherwise, it’s pretty much a dead ringer.
Note that ‘Stik’ in the plan title block is spelled with a ‘C’ i.e., ‘Stick’, but is referred to as ‘Stik” throughout the article.
For what it’s worth,
al
02-22-2009, 10:28 PM
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RE: is there any incedence on a big stick
Hay that’s great! The pictures you posted are great. I wish I researched this before I made the plane. My plans are almost identical but a smaller scale because my design is a 25 size. I made the plane from scrap balsa I had from old jobs. The covering I had kicking around the radio ext. the plane cost me 20 dollars to build so no great loss. If it not a good flyer. I don’t think 2deg is too much. I have trainers with 6 deg but they don’t fly upside down to well. Thank you for the info pictures and time.
04-30-2009, 07:29 AM
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RE: is there any incedence on a big stick
Well got a chance to go to the field yesterday, and it was soggy and wet. I got a soaker doing a range check. I also had a bad glow plug. Once I got that fixed off she went, had to trim it out a little, but once I did that it flew great. The controls where touchy, but once I got used to it, it was ok. The FP 20, is an older version of the LA, and is not the most powerful thing, but it good enough for most stunts. When inverted, you just need a little down, hardly anything on the stick. No surprises when taking off or landing. In my books a good fun airplane and can be left assembled in the car, only way to make it better is make it electric. This is a picture of the plane next to my brothers 25 pulse.
