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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> Jett Engineering Support >> Sj 90 L - T
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Sj 90 L - T - 9/4/2002 11:25:45 PM   
daven



Posts: 6649
Joined: 12/7/2001
From: Andover, MN, USA
Status: online 		I have the engine on order for my corsair, and was wondering what prop would you recommend? And, what size fuel tank should I get for a comfortable 10-12 minutes of fly time?

_____________________________

Dave Norman

klasskote.com
supertrc.com
       Post #: 1

90LT prop - 9/5/2002 12:46:44 AM   
bob27s



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

You may want to drop Dub or Dennis a note directly on this one just for conformation.

I believe you will also be running the Turbo-Jett muffler with this.
The 90T should run around 10 - 12K rpm with this set up. I would start out running an APC 13x6, and then work up to a 14x6 after the engine has run a bit.

At 11,000 rpm, you can expect about 1.25 ounce per minute at full throttle. I would expect that a 16oz tank should work pretty well to get you a solid 10 min.

I hope this is the info you are looking for.

Bob Brassell

(in reply to daven)
       Post #: 2

Sj 90 L - T - 9/5/2002 2:18:57 AM   
daven



Posts: 6649
Joined: 12/7/2001
From: Andover, MN, USA
Status: online 		Perfect.

Just what I wanted on the props, and yes I will be using a In-Cowl muffler with the engine.

I was hoping I could sneak by with a 14oz tank as it fits better with the battery up front, and I think I will need the extra nose weight. I think I will bench run it a few tanks to see if I can get away with 14oz.

Thanks,.

_____________________________

Dave Norman

klasskote.com
supertrc.com

(in reply to daven)
       Post #: 3

Sj 90 L - T - 9/5/2002 6:31:05 PM   
bob27s



Posts: 4637
Joined: 4/9/2002
From: Cleveland, OH, USA
Status: offline 		Any time Dave

I would imagine you could get away with 14 oz over 10 minutes without much of a problem, since you will likely not be running at full throttle all of the time.

But...then again... you are a pylon guy like me

(in reply to daven)
       Post #: 4

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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> Jett Engineering Support >> Sj 90 L - T
Page: [1]





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