RE: Great Planes PT- 17 Stearman ARF

RE: Great Planes PT- 17 Stearman ARF
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RE: Great Planes PT- 17 Stearman ARF - 5/30/2005 6:13:48 AM

carlbecker

Posts: 1613
Joined: 7/29/2002
From: Fairfax, VA, USA
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Its been a bit windy here in Northern Va. Lots of cross wind but I did manage a very nice landing on this beautiful day. What a sweet plane!

Carl

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(in reply to Kmot)

Post #: 51

RE: Great Planes PT- 17 Stearman ARF - 5/30/2005 10:10:32 AM

Jimmy Bananas

Posts: 874
Joined: 12/30/2001
From: Urbandale, IA, USA
Status: offline

Carl:

Due to some problems with mine,have made some adjustments to the elevator, and CG, have added about 5 ozs to the nose...Have quite a bit of down elevator trim to make it fly level..will fly again today..wind only 5-10 mph..haven't flown at all for a week..either it's been raining or too windy...finally a decent day to fly..will let you know what happens...did some measuring on the plane..this is what I have found;

Eleavtor: 0-0
top wing: -1.0
bttm wing: 0-0
downthrust: 3.0 degrees

Later....................

(in reply to carlbecker)

Post #: 52

RE: Great Planes PT- 17 Stearman ARF - 5/30/2005 12:05:53 PM

Flyboy1958

Posts: 473
Joined: 10/20/2002
From: Somewhere, PA, USA
Status: offline

Carl, looks real nice, boy it really looks real with the sky in the background. Good luck to you Jimmy.

(in reply to Jimmy Bananas)

Post #: 53

RE: Great Planes PT- 17 Stearman ARF - 5/30/2005 6:59:19 PM

Kmot

Posts: 7717
Joined: 6/11/2003
From: Northridge, CA, USA
Status: online

Picture #1 sure does look real!

_____________________________

DRILL BABY DRILL!!!

(in reply to Flyboy1958)

Post #: 54

RE: Great Planes PT- 17 Stearman ARF - 5/31/2005 1:56:46 PM

carlbecker

Posts: 1613
Joined: 7/29/2002
From: Fairfax, VA, USA
Status: offline

I had help with a beautiful day. You can still see things hanging of the plane that should not be there but I'm pleased with the pic. I had a couple of hard landings and the fiberglass around the LG struts cracked. I just removed them. I'm tough on wheel pants also. Maybe one of these days I will learn.

Carl

(in reply to Kmot)

Post #: 55

RE: Great Planes PT- 17 Stearman ARF - 6/1/2005 3:54:11 AM

carlbecker

Posts: 1613
Joined: 7/29/2002
From: Fairfax, VA, USA
Status: offline

I just purchased a 50 pound postal scale for $18. I weighed the PT-17. Top wing 1 lb 15 oz. Bottom wing 1 lb 13 oz. Fuselage 9 lb 4 oz. Look like I'm at 13 pounds with a little fuel in it and no fiberglass on the LG struts. One pound under min.

Carl

(in reply to carlbecker)

Post #: 56

RE: Great Planes PT- 17 Stearman ARF - 6/1/2005 9:46:09 AM

Jimmy Bananas

Posts: 874
Joined: 12/30/2001
From: Urbandale, IA, USA
Status: offline

Carl:

OK,where did you get that 50 Ib postal scale? I sure can use one of those..As for my PT-17,added the weight,and still wants to climb...can maintian level flight,but with quite a bit of downtrim..Guess I'll have to settle with that..Yep,the fiberglass molding on the landing does split..Got a new one on and it's starting to split also..got the old one repaired,and ready to paint,but will change the wheels on it...going with Robarts 3-3/4" scale wheels ,with foam inserts..the wheels that come with the kit are too hard and the plane likes to bounce on landing all over the place....needs softer wheels..also the tail wheel unit is going to be replaced..friend of mine who has a Super Stearman,replaced his with a Ohio R/C unit and it works fine...won't fly it again until all of this is done...have a nice one

(in reply to carlbecker)

Post #: 57

RE: Great Planes PT- 17 Stearman ARF - 6/1/2005 1:02:39 PM

Flyboy1958

Posts: 473
Joined: 10/20/2002
From: Somewhere, PA, USA
Status: offline

Good info from you guys. Boy, doesn't anybody else have this plane or what? Not many people talking about it.

(in reply to Jimmy Bananas)

Post #: 58

RE: Great Planes PT- 17 Stearman ARF - 6/1/2005 2:02:40 PM

carlbecker

Posts: 1613
Joined: 7/29/2002
From: Fairfax, VA, USA
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I found serveral on the auction place. I think you can find them at Walmart, etc. It a small unit using battery or AC. I use battery, I have to many cords already. I placed the fuse vertical on the scale and balanced it with my fingers so I might be a little off but I believe very close.

Carl

(in reply to Flyboy1958)

Post #: 59

RE: Great Planes PT- 17 Stearman ARF - 6/1/2005 8:07:17 PM

ElectRick

Posts: 469
Joined: 8/31/2002
From: Jacksonville, FL, USA
Status: offline

quote:

ORIGINAL: carlbecker

I just purchased a 50 pound postal scale for $18. I weighed the PT-17. Top wing 1 lb 15 oz. Bottom wing 1 lb 13 oz. Fuselage 9 lb 4 oz. Look like I'm at 13 pounds with a little fuel in it and no fiberglass on the LG struts. One pound under min.

Carl

By my math, this makes the airframe with radio weigh in at around 11.25 lb., since the Saito 120 weighs 28 oz. according to Horizon. Good info to know for my contemplated electric conversion of this plane.

BTW, how are those fiberglass strut cuffs attached? I want to rebend the gear to be narrower in track to make it look more scale, and I'm probably going to have them pop off by trying it.

Rick

(in reply to carlbecker)

Post #: 60

RE: Great Planes PT- 17 Stearman ARF - 6/1/2005 9:07:55 PM

carlbecker

Posts: 1613
Joined: 7/29/2002
From: Fairfax, VA, USA
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If you are counting Glow vs Electric remember the fuel tank and throttle servo and muffler. I'm sure its worth a few ounces. The fiberglass ? around the struts is brittle. I bounced the PT-17 in a couple of times and got a crack in the leading edge most of the way. I CA'd it at the field and the next week cracked it again. Its a fun fly ARF so out came the dremel to remove the other side.

When the Saito is put puting and the Stearman is just floating along is great! More than enough power for good sized loops from level flight. Cuban eights require throttle past the top of the loop to keep speed up for the roll. Ailerons are just not real responsive.

I like my scale. Now I will know what each plane weighs.

Carl

(in reply to ElectRick)

Post #: 61

RE: Great Planes PT- 17 Stearman ARF - 6/2/2005 2:22:45 PM

Nerevar

Posts: 260
Joined: 6/2/2005
From: *, USA
Status: offline

Hello guys,

I've been out of RC for over 20 years and now thinking of getting back into it.
I'll be re-learning to fly on a little SuperFly electric, but thinking of getting one of these Great Planes PT-17 Stearmans as my 2nd plane as scale biplanes and sport biplanes, especially the PT-17, have always been my main interest.
So needless to say, this thread is extremely interesting to me.

Having been away from the hobby for so long, many questions come to mind.
One is, I noticed a reference to using a 6 volt battery above the engine instead of the 4.8 volt. I'm assuming this is the receiver/flight pack battery. Is that correct? Or is this just for servos while the receiver would still need the smaller battery?

It seems that much has changed. One nice surprise was that glow fuel is cheaper than what I expected given the rise in price of most everything else.

I hope it's OK to just jump in on this thread like this. If not, please forgive the intrusion.

Thanks for your answers and comments.
Ramon Holloman

(in reply to carlbecker)

Post #: 62

RE: Great Planes PT- 17 Stearman ARF - 6/2/2005 4:26:22 PM

carlbecker

Posts: 1613
Joined: 7/29/2002
From: Fairfax, VA, USA
Status: offline

Ramon,
You can spend a lot of time reading here. I have been using 5 cell 6 volt flight packs for about 4 years without a regulator. For receiver and servos either Multplex, Hitec or Futaba.
I would recommend an advanced trainer/tail dragger before you try the PT-17. Its not fast if powered within specs but it can get squirrelly.

Carl

(in reply to Nerevar)

Post #: 63

RE: Great Planes PT- 17 Stearman ARF - 6/2/2005 4:42:09 PM

Nerevar

Posts: 260
Joined: 6/2/2005
From: *, USA
Status: offline

Thanks for the info Carl.

And for the suggestion too.

Maybe bringing my old .60 size ugly stick out of retirement might be a better 2nd plane. It's gentle and predictable. Actually more gentle and predictable than the SuperFly, come to think of it.

Ramon

(in reply to carlbecker)