I should have expected that by now. lol
PT-17 Stearman 1.0
- Thread starter SP0NZ
- Start date
Mzaher
Member
OK, I finally had the chance to get her back in the air last night. Here's the skinny. I added 1 washer to increase the down thrust, reset the down trim to neutral, and raised the expo on the ailerons to 45% (mostly due to my limited stick time). The results were much better! Ended up having to use just under 1/4 of the down trim at half throttle for level flight and she only climbs a little (manageable) at full throttle. Also when I would cut the throttle, stayed right on the flight path, no pitching down. Was fun to fly, and for that reason, let's hope I can keep it in one piece until Filte Fest!If you're trimmed for level flight do you notice a sudden pitching down when you cut throttle? I wouldn't expect that behavior if the issue was incidence related (but maybe someone with an aerospace degree could chime in @Mid7night).
Great news! I can't wait to see all the Stearman at FF this year!
Yankee2003
Well-known member
2 oz….you did good. I have a C pack and a 2500 3s shoved as far forward as it can go. I am going to be adding 3+ oz to the nose. The CG point (2.5 inches off the leading edge of the top wing) is pretty far forward in the planes length. The lower wing, most of the upper wing, plus the aft servos and the entire tail are all behind the CG point and needs to be balanced out.
I wonder if some of the down trim everyone is talking about might be from people being shy from adding weight to balance on the CG.
Either way the weight in the nose is going to be substantial.
I might weigh it out, but at this point I am going to do what is necessary to balance it. I would be interested in what others are doing to this airframe.
Glad to hear your Stearman is flying better.
Yankee2003
Well-known member
Stearman done. She’s not a beauty queen, but she is ready.
A final thank you to Ben, Carl and Dan.
CrshNBrn
Elite member
She looks gorgeous! Give her the blue ribbon- she IS a beauty queen. Good luck with the maiden!
Yankee2003
Well-known member
You’re very kind. I know what level of craftsmanship you deliver.
But I will take it, thank you.
Beauiful build! She looks fantastic!
Where did you pull the registration number? Looks like that N number is registered to an Archer now
Yankee2003
Well-known member
Those were the numbers that jumped in my head. And the “Tango” just looks nice.Beauiful build! She looks fantastic!
Where did you pull the registration number? Looks like that N number is registered to an Archer now
grasskisser
New member
Sponz, when you say "at this time" . Will you ever?
This is just what I wanted and would love to make it. But I needle cut. These old hands will not take to tracing and hand cutting
Would be happy to pay for vector file or dxf.
That's Ben's call to make, not mine. It's his design, I just created the formatted plans for him.
How do you access the battery?
Flying Farm Kid
Active member
Threw the front cockpit of the plane.
It is not to difficult to remove the battery either.
Flying Farm Kid
Active member
It is well worth the build it is and awesome flyer just make sure to make the landing gear extra strong if you are flying of grass mine has busted a few times, the next one I make the gear will be 3d printed.
Flying Farm Kid
Active member
I don't believe so
Thanks, looking at the build video, haven't figured out how the power pod is retained and where to place esc. How did you do your build?
Flying Farm Kid
Active member
I just have mine floating about in the front cockpit I only run it on a 1800 3s so it doesn't get to hot it also makes it easy to plug in.
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CrshNBrn
Elite member
That's a snazzy 3D printed engine up front there. Nice build!
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