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Sig Primary Force Engine.

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Old 05-07-2013, 04:09 AM
  #1
iflyg450
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Default Sig Primary Force Engine.

Well after looking for a few years I finally got a primary force. I was just wondering what would be a good engine? I have a 46LA but I think it might be to big. I am tempted to try the NV 40 AX-BB or an Enya SS40S.
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Old 05-07-2013, 07:22 AM
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R Bush
 
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Default RE: Sig Primary Force Engine.

Are you wanting a plane that will fly stunts at a moderate speed?

I checked over at Stuka Stunt Forum and found this thread which gives good information:
http://www.clstunt.com/htdocs/dc/dcboard.php?az=show_topic&forum=103&topic_id=37794 3&mesg_id=377943&listing_type=search

There seems to be agreement that the OS LA25 is a good match. In fact that's what the designer recommends.Formore power, an OS FP25 or other plain bearing or ball bearing 25 to 28 should be good. Vibrators like the Fox 35 will break off the nose.

Randy
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Old 05-07-2013, 01:08 PM
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dennis
 
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Default RE: Sig Primary Force Engine.

I had 2 of the Sig Primary Force models. Both were powered with K&B Sportster engines a 28 and 20 respectively. Both were excellent flyers as the Sportsters handle larger props then the LA25 with ease. Both of them did the full pattern.

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Old 05-07-2013, 03:50 PM
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Default RE: Sig Primary Force Engine.

The Enya SS40 is of similar weight and power to the LA46, and the NV 40AX is even heavier, so I'd give them all a miss. Dennis and Randy's suggestions sound good, and you could add the Enya SS25 and SS30 to the list.
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Old 05-10-2013, 02:38 PM
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iflyg450
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Default RE: Sig Primary Force Engine.

Well I got an engine a nice OS 40FP that has been tuned for stunt. Thanks for all the replies.
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