APC 15X4W Question  
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All Forums >> RC Airplanes >> Questions and Answers >> APC 15X4W Question
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APC 15X4W Question - 6/25/2008 5:40:22 AM   
Sign Guy



Posts: 80
Joined: 1/2/2006
From: Las Vegas, NV, USA
Status: offline 		I just purchased an APC 15X4W prop for my Saito 100. The problem I have is the thickness of the prop and the spinner/jam nut that I have. The spinner adapter/jam nut isn't deep enough to jam up against the prop nut by about 1/2 an inch. What do I use for a spacer or where can I get a deeper spinner adapter?
Thanks

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RE: APC 15X4W Question - 6/25/2008 8:25:08 AM   
The Ghost



Posts: 797
Joined: 3/18/2004
From: UlladullaNSW, AUSTRALIA
Status: offline 		I take it that the lock nut wont tighten against the prop nut? Two ways out of it, 1) make a spacer between the engine prop driver and the back of the spinner, 2) use a different type of lock nut and a new spinner adapter nut.

Cheers

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RE: APC 15X4W Question - 6/25/2008 6:27:19 PM   
broke_n_bummin



Posts: 838
Joined: 3/17/2006
From: Kershaw, SC, USA
Status: offline 		I've cut out the middle of a broken spinner to use as a spacer before.

< Message edited by broke_n_bummin -- 6/25/2008 6:29:54 PM >

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RE: APC 15X4W Question - 6/26/2008 6:37:28 PM   
Flyboy1958



Posts: 473
Joined: 10/20/2002
From: Somewhere, PA, USA
Status: offline 		I would check out tru-turn web site and figure it out.

(in reply to broke_n_bummin)
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RE: APC 15X4W Question - 6/27/2008 12:28:24 AM   
MetallicaJunkie



Posts: 966
Joined: 9/17/2006
From: donna, TX, USA
Status: online 		is gonna rip on your 100.... its perfect for my 91 turning 9300 with 10% and rips the air...sounds great

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Revver Bro #217

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RE: APC 15X4W Question - 6/27/2008 1:18:17 AM   
Deadeye



Posts: 3639
Joined: 7/16/2002
From: Conrad, MT, USA
Status: online 		My 82 swings a 15X4 APC. Seems like that is a little small for a 100.

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RE: APC 15X4W Question - 6/27/2008 5:03:19 AM   
Sign Guy



Posts: 80
Joined: 1/2/2006
From: Las Vegas, NV, USA
Status: offline 		I've been told by many a 15X4W or 16X4W is the prop of choice for this motor. The instructions call for up a 15 X 6

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"It was supposed to do that.....Right?"

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RE: APC 15X4W Question - 6/27/2008 5:07:40 AM   
Jester241



Posts: 384
Joined: 8/25/2007
From: , PA, USA
Status: offline 		I'm just using a spare engine washer inbetween my prop and the washer/adapter nut. It works fine and hasnt came loose yet without a jam nut.

(in reply to Sign Guy)
       Post #: 8

RE: APC 15X4W Question - 6/27/2008 5:09:08 AM   
Deadeye



Posts: 3639
Joined: 7/16/2002
From: Conrad, MT, USA
Status: online 		I've only swung a 14X8 on my 100. 15X6 or 16X4 fall into the drop in pitch for increase in length rule of thumb. Just make sure it doesn't over rev.

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RE: APC 15X4W Question - 6/27/2008 5:20:25 AM   
Sign Guy



Posts: 80
Joined: 1/2/2006
From: Las Vegas, NV, USA
Status: offline 		I flew it with the 14 X 8 and it has like ZERO vertical. The load on a 16 X 4 is the same as the 14 X 8 a load factor of 36. The 15 X 4 is a little less, but being wide bladed, still shouldn't over-rev the motor.

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