Sport Jett 46 prop  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> Jett Engineering Support >> Sport Jett 46 prop
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Sport Jett 46 prop - 8/6/2002 9:36:34 AM   
Spraytec


 

Posts: 48
Joined: 1/25/2002
From: palm springs, CA, USA
Status: offline 		Broke in my Sport Jett 46. Now I need advice on prop for Hi speed runs in Whiplash Delta. Plane is approx. 3 3/4lbs, I am using the stock muffler (red. Maybe APC pylon ? 8.8 in with 8.75-9.25 pitch? Wildcat 15% nitro


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Mike Longnecker
76O-992-9176
       Post #: 1

Sport Jett 46 prop - 8/6/2002 5:14:17 PM   
bob27s



Posts: 4637
Joined: 4/9/2002
From: Cleveland, OH, USA
Status: offline 		Hi Mike.....

there are a variety of combinations you can try.

I would say to start with a standard APC 9x7, and perhaps then try an 8.8x8.5 pylon prop or the 8.75x9W. Try and keep the SJ-46 engine in the 17K rpm (peak, on the ground) range... or slightly above. You can keep adding pitch as long as you stay in that rpm range. Another prop that works pretty well is the 8.5x7.25 pylon prop. The engine will really turn that sucker, and it will unload big time in the air.

You may also want to post the question in the Extream Speed forum. There is quite a bit of experience in there

http://www.rcuniverse.com/forumdisplay.php?forumid=162

I trust this will be helpful.

Bob

(in reply to Spraytec)
       Post #: 2

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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> Jett Engineering Support >> Sport Jett 46 prop
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