US 41 best prop.  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> Fuji-Imvac Engines Support >> US 41 best prop.
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US 41 best prop. - 8/18/2003 6:21:13 AM   
Smokey


 

Posts: 796
Joined: 3/14/2002
From: Bronxville, NY, USA
Status: offline 		I have a Dynaflite Super Decathelon and was wondering what the best size and brand prop for this combo. I intend to do some aerobatics with the plane.

Thanks
Smokey
       Post #: 1

US 41 best prop. - 8/18/2003 4:08:46 PM   
beepee


 

Posts: 754
Joined: 2/8/2002
From: Dubai, UNITED ARAB EMIRATES
Status: offline 		Smokey,

I have the same set up, but my engine is the Quadra 42 (basically the same thing). I run an 18x10, which is a little light for the engine, but OK. You will not be able to run anything larger in diameter. The gear height is marginal for 18" prop as it is.

How has your weight come out? Mine weighs in around 18.5#.

Overall you have a great combination. Have fun with it. I sure do.

Regards,

Bedford

(in reply to Smokey)
       Post #: 2

US 41 best prop. - 8/18/2003 9:47:38 PM   
Bax


 

Posts: 12681
Joined: 4/26/2002
From: Champaign, IL, USA
Status: online 		An 18 x 10 prop should be fine. You can try other props, but make sure they turn the same RPM range as the 18 x 10.

_____________________________

Bill Baxter, Manager Hobby Services/Futaba Service/North America
3002 N. Apollo Dr. Ste. 1 Champaign, IL 61822 USA
Service Phone: 217 398-0007
Email: hobbyservices@hobbico.com

(in reply to Smokey)
       Post #: 3

US 41 best prop. - 8/19/2003 4:11:22 AM   
Smokey


 

Posts: 796
Joined: 3/14/2002
From: Bronxville, NY, USA
Status: offline 		beepee...What brand prop are you using. I have an Apc 18x8 on it for breaking. Have not run it yet but will this weekend hopefully. I think the plane weighs about 15# on a bathroom digital scale. Anybody know what rpms i should be looking for with an 18x10 prop.

Smokey

(in reply to Smokey)
       Post #: 4

US 41 best prop. - 8/19/2003 3:55:44 PM   
beepee


 

Posts: 754
Joined: 2/8/2002
From: Dubai, UNITED ARAB EMIRATES
Status: offline 		Smokey,

I run standard wood Zingers. My Quadra instructions recommended wood only. Could save the crankshaft in a crash. An 18x10 should give you just over 7000 at this point, a bit more after break in.

How did your balance come out?

Bedford

(in reply to Smokey)
       Post #: 5

US 41 best prop. - 8/20/2003 8:51:23 AM   
Smokey


 

Posts: 796
Joined: 3/14/2002
From: Bronxville, NY, USA
Status: offline 		beepee... The plane balanced nose heavy with the servos mounted in the tray near the tail. Battery and receiver just infront of that. I will move the battery closer to the tail. I am also looking into mounting the elevator servos near the tail section. Probably gonna be a pain to do so. I will remove the spring starter to lessen nose weight.

Smokey

(in reply to Smokey)
       Post #: 6

US 41 best prop. - 8/20/2003 4:23:08 PM   
beepee


 

Posts: 754
Joined: 2/8/2002
From: Dubai, UNITED ARAB EMIRATES
Status: offline 		Smokey,

I wish mine turned out that way. Mine was tail heavy. I took my US41 on CH ignition out to replace with my Quadra as it weighs 8 - 10 ozs. more. I moved the batteries forward to the middle of the cabin and added a bit of dead weight to the firewall to get the final trim.

It shouldn't take too much dead weight in the tail to get to the right trim for your bird.

Have fun!

Bedford

(in reply to Smokey)
       Post #: 7

US 41 best prop. - 8/20/2003 7:23:06 PM   
Bax


 

Posts: 12681
Joined: 4/26/2002
From: Champaign, IL, USA
Status: online 		This is the U.S. Engines Support area. It's not a general discussion forum. I'm closing this thread since it's strayed from the original support question.

_____________________________

Bill Baxter, Manager Hobby Services/Futaba Service/North America
3002 N. Apollo Dr. Ste. 1 Champaign, IL 61822 USA
Service Phone: 217 398-0007
Email: hobbyservices@hobbico.com

(in reply to Smokey)
       Post #: 8

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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> Fuji-Imvac Engines Support >> US 41 best prop.
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