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laxlife
07-03-2006, 02:44 PM
We just finished converting this big classic biplane to electric and had a successful maiden yesterday at PGRC (Maryland). She is a beautiful flyer, very scale not 3D but very eye catching. Here is our setup
Axi 5330-24
Jeti 90 ESC
APC 18-10 prop
17 pounds All up Weight
Batteries: 2, Thunderpower 5300 mAh, 5s 18.5 volt lipoly packs in series to produce 39 volts to the motor which resulted in this power output at full throttle:
2,000 watts to the prop
58 Amps

http://www.wattflyer.com/photoplog/index.php?n=719

http://www.Wattflyer.com/photoplog/index.php?n=720

laxlife
07-03-2006, 03:01 PM
http://www.Wattflyer.com/photoplog/index.php?n=720

Grasshopper
07-03-2006, 03:36 PM
You're right, she is beautiful! The Stearman has got to be one of the classiest old timers there is. I love your paint scheme too. That's got to be a real joy to fly.

Tom

Bigfoot21075
08-11-2006, 02:09 PM
WOW! Looks GREAT! I would LOVE to do that conversion, just not sure if I can pull off a conversion of that difficulty yet.

Hope to see it fly!

Electrick
08-23-2006, 02:55 AM
Very nice!

I don't think a big conversion like this is any more difficult to do than any other kind--in fact, larger is easier to fit batteries and stuff into, and large airframes aren't so sensitive to slight weight gain like small ones.

It's only harder on the wallet. :eek:

I did the GP PT-17 conversion myself last year. Mine is a bit more sedately (i.e. scale) powered, with a Feigao 54084-12XL BL on a 5.2: planetary gearbox, Jeti 77, 16-10 prop, and 8000 mah 8S2P LiPo. It makes about 1200 watts at the prop--Continental 225 type power level, as opposed to your P&W 450 power level. :D
Mine came out to just 13 lb. RTF, with a few small airframe mods and zero balancing weight added or needed. That took some planning. ;)

These two planes are sweet flyers, and great large conversion candidates.

Rick

chute42
09-03-2006, 01:19 AM
I just did the maiden of my GP Super Stearman today. Mine is powered with a Welgard outrunner from bp and 8s PQ 3700ma lipo(2 4s in series) and a jeti 77 opto. I am reading 40amps @30v for 1200watts swinging a 20x11 APC te prop. Check out the vid http://media.putfile.com/Super-Stearman-RC-model
It is a sweet flyer, Chuck

laxlife
09-03-2006, 02:39 AM
That's a beautiful plane! I'm intrigued by your power train. 1500 watts is great. What's your flying weight? I've got my video into the computer now to figure out how to convert the file format, downsize and upload...stay tuned.

chute42
09-03-2006, 02:49 AM
My flying weight came to 13.5lbs. I didn't do anything to reduce weight and the motor is a bargain at $135.99. Check it out here. http://www.bphobbies.com/view.asp?id=A2586784&pid=W001765
After a 2min flight and a short full power run on the ground the motor was warm to the touch.
Chuck

laxlife
09-03-2006, 07:22 AM
Interesting comparison to our specs:
Axi 5330-24
Jeti 90 ESC
Mejzlik 20x8 Carbon prop
17 pounds All up Weight
Batteries: 2, Thunderpower 5300 mAh, 5s 18.5 volt lipoly packs in series to produce 39 volts to the motor which resulted in this power output at full throttle:
2,000 watts to the prop
58 Amps
We get three 10 minute flights for a total harvest of 3000 mAh out of each 5300 mAh TP pack (my Jeti 90 ESC is set to "high" cutoff). We've logged about a dozen flights since we finished the conversion in June. Here is my first video posting I hope its not too big a file. Don't pay attention to the gas engine in the soundtrack its from the 40% Extra that was preparing for PGRC's annual Aerobatic contest to be held the following day. Too bad the camera wasn't rolling when one of these monsters stuttered transitioning to 3D at 20 feet and pancaked in for a very dull, gravity wins moment. Oh well it was cool to watch and I certainly know the feeling.
video:
Click here to watch RC-Big-Electric-Biplane (http://media.putfile.com/RC-Big-Electric-Biplane)

Positive Charge
09-16-2006, 04:10 PM
I like the G.P. BoeingP-6E. would I be right in thinking that the same power train would be OK.

Alan

chute42
09-17-2006, 01:48 AM
I like the G.P. BoeingP-6E. would I be right in thinking that the same power train would be OK.

Alan
I think it would work just fine.
Chuck

BipeFan
05-28-2013, 06:57 AM
Hi,

I just registered to the forum and logged in to see how people did the eletric conversion of the Stearman to get an idea on how to do my own, but the website is not letting me see any of the links. It acts just like im not registered... :-(

BipeFan
05-30-2013, 01:00 AM
Please! Can someone help me, because i cant see the images posted on this topic. Im planning to make the GP Super Stearman eletric conversion and more details would be a great help. :-(

I login to the forum, then click on the links to see the pictures and it leads me to the login screen again, when i re-login and still not allowed to see.

Flyte Lyne
06-04-2013, 02:57 AM
Love the p-6e

riverrat
06-20-2013, 12:28 PM
Please! Can someone help me, because i cant see the images posted on this topic. Im planning to make the GP Super Stearman eletric conversion and more details would be a great help. :-(

I login to the forum, then click on the links to see the pictures and it leads me to the login screen again, when i re-login and still not allowed to see.


Me two????

hayofstacks
06-20-2013, 03:33 PM
I'm guessing it has to do with the 2006 post dates. plenty of information out there on larger scale electrics.

denny (kyleservicetech) has posted loads of information on converting bigger models using a-123 cells and hacker motors. use the search.

Wi53072
08-08-2013, 08:31 PM
I would love to be able to see the pictures in this thread. It is really weird that I can not and others cant either? [popcorn]

Slowjohn
08-11-2013, 04:49 AM
Please! Can someone help me, because i cant see the images posted on this topic. Im planning to make the GP Super Stearman eletric conversion and more details would be a great help. :-(

I login to the forum, then click on the links to see the pictures and it leads me to the login screen again, when i re-login and still not allowed to see.


Same thing here :censor: :rolleyes: :(

Standing By,
SJ

laxlife
08-12-2013, 06:18 PM
sorry the pics from the original post are outdated and have been deleted by WattFlyer. If I can find them I will repost here. Still flying this beauty!

aviatortom
02-11-2015, 06:20 PM
Would a Hacker A60-6SV2 work for this conversion?

laxlife
02-11-2015, 07:13 PM
I think you will need 10s power not a 6s lipo setup. I don't recall if the Hacker A60 can handle 10s. I love Hackers, just as good as Jeti's in my book. I have come believe the advice that more voltage is better.

Flysohigh
06-25-2015, 02:15 AM
i had one myself.... was going to go with the 1.20 but really wanted electric.....bummer i had to sell it before even started on it due to rough times....pics of the electric conversion?