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Old Aug 21, 2015, 12:53 PM
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Ok
I'm not proud of the takeoff and landing but this vid gives a good idea of the performance of the Stearman with a 40 four stroke.

It's funny, it balances in the same exact place as before but the nose hunts when it's slow (like takeoff and landing)
So I guess I'll be adding an ounce to the nose and trying again.

Nick

Stearman first nitro (2 min 55 sec)
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Old Aug 21, 2015, 01:50 PM
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Hey, I'm proud of all my landings. It's the other ones I'm not proud of.
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Old Aug 21, 2015, 05:43 PM
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as long as it's wheels first, I reckon.
epoxied 1 oz in the cowl which moved the CG up to 90mm.
Next week will tell the diff.

I know the exhaust pipe is very non scale, but after the flight there was zero oil on the Stearman.
(being nose straight up and yawing towards the power lines may have scared it off)

(we need a crossed finger emoticon)
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Old Aug 21, 2015, 07:40 PM
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What size prop are you using with the Power 32 and 4S setup?
Xoar 12x6 wood. Looks great.
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Old Aug 21, 2015, 08:56 PM
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Xoar 12x6 wood. Looks great.
So you're using the same prop and 3S and 4S?


I have a 12x6 Falcon coming, and several APC to use first. Vess makes a nice wood propeller that has a vintage curve to it. I tried one on my Meridian and really liked it (came in a 14x9, which no one else had).
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Old Aug 21, 2015, 10:16 PM
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No, I use the 12x6 on 4S with a Power-32.
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Old Aug 22, 2015, 12:01 AM
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12x6 is the prop spec'd for the Power 15 on 3S . That's why I asked. I'll have a power setup similar to yours (overpowered heavier motor). I have 3S and 4S batteries.
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Old Aug 22, 2015, 09:36 PM
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The plane has unlimited vertical with the P32/4S+12x6. Totally not in the least bit scale. The first time I flew it, some of the covering on the fuselage started literally peeling off. The concern I had was whether it would still fly slow and scale like with the added weight. But the plane doesn't care if the weight is ballast or the motor, and everyone seemed to be adding a fair amount of ballast, so I figured it'd be fine. Which it is. The plane flies nice and slow. And if you go too slow and it stalls, the motor has the grunt to rescue you from almost any predicament.
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Old Aug 22, 2015, 11:45 PM
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I should be happy then. I have a plane that is overpowered for the same reason, and I have gotten into trouble too low and slow and been able to get out of it totally on the power of the motor.

Mine came today. I just finished strengthening the things I strengthen with epoxy--around the motor, landing gear area, etc. Rest of the stuff still on the way.
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Old Aug 23, 2015, 08:48 AM
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Quote:
Originally Posted by taildragger1589 View Post
Ok
I'm not proud of the takeoff and landing but this vid gives a good idea of the performance of the Stearman with a 40 four stroke.

It's funny, it balances in the same exact place as before but the nose hunts when it's slow (like takeoff and landing)
So I guess I'll be adding an ounce to the nose and trying again.

Nick

https://www.youtube.com/watch?v=HS7H...ature=youtu.be
.
Taildrager,have you had any luck getting your Stearman sorted out? I was sitting here with my mourning coffee thinking I'm going to pick up this Stearman at the LHS, And mount my Saito 40 in her, BUT after watching your vid, you scared my off!Not what I had in mind for a relaxing Bip!
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Old Aug 23, 2015, 01:01 PM
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.
Taildrager,have you had any luck getting your Stearman sorted out? I was sitting here with my mourning coffee thinking I'm going to pick up this Stearman at the LHS, And mount my Saito 40 in her, BUT after watching your vid, you scared my off!Not what I had in mind for a relaxing Bip!
I would recommend getting it, its a wonderful plane, but while I don't know for sure, watching that video it looks WAAY tailheavy (more than an ounce ) and if you balance it according to the manual, its a gentle easy flier regardless of power source.
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Old Aug 23, 2015, 01:08 PM
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Not yet.
But I only get one shot at flying per week so it's gonna be a few more days.

However, while we're waiting I can point out a few things that may influence you.

First, my .40 is the very first four stroke .40 offered by OS back in the '80s. So it probably has about 70% of the power of your Saito.
(8500 rpm on an 11/7)

second, I always start off out of trim. Oddly enough, the maiden flight of the Stearman when she was electric looked a lot like this maiden.
Keeps it exciting though.

Now she balances in the middle of the recommended envelope and I might have to remove a few of the clicks of down trim I put in during that climbout.
No biggie, it always takes a few flights to sort out a change in the airframe.

Nick
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Old Aug 23, 2015, 04:26 PM
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wow taildragger...lucky you didnt loose the stearman...that was one twitch tail heavy flight!!!
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Old Aug 23, 2015, 07:51 PM
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Yup!
I've been trying to reason out the big difference.
I have the balance point marked with a dot of epoxy at the upper wing roots so I'll always know where it was balanced. But this time the idea didn't work so good.
It balanced in the same place as before but it's a good bit lighter.
Surely it didn't get more stability from being heavy.

I just eyeballed the thrust lines but they look the same.

I wonder if the upper center section tightened down at a different angle than before.... Hmmm.
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Old Aug 28, 2015, 02:03 PM
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Matching paint colors?

I found out on this thread that the blue can be matched with Testor's Engine Paint, Ford Blue.

Does anyone know what matches the yellow, and the dark blue on the rudder? I want to paint the white plastic mounts that the screws go into.
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