[NSRCA-discussion] APC PROPS FOR OS 140 RX

frank frankjuliei at comcast.net
Sat Mar 20 14:12:55 AKDT 2010


Vince,

 

A few  of the guys I fly with left the 3 blade for the 18.1 x10, which we
all know is a very good prop. I, too, used it for awhile, but found myself
returning to the 3 blade.  More than likely, I will  try to pickup another
one of Dave's re-pitched  APC  3 blade 15.75x 10.

 

Frank

 

  _____  

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Vicente
"Vince" Bortone
Sent: Saturday, March 20, 2010 11:29 AM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] APC PROPS FOR OS 140 RX

 

I have one 3 blade re-pithched.  Do you want to go back to 3b?  That is the
best for that engine.

Vicente "Vince" Bortone

----- Original Message -----
From: rcmaster199 at aol.com
To: nsrca-discussion at lists.nsrca.org
Sent: Saturday, March 20, 2010 9:11:08 AM GMT -06:00 US/Canada Central
Subject: Re: [NSRCA-discussion] APC PROPS FOR OS 140 RX

I've used the 18x10 sport prop that Ron talks about. Still have it I think.
I used it on a 27% Xtra 300 10 years ago at least. I don't think I liked it
much from thrust generation POV and it was very heavy.

 

Frank stick with the 18.1x10. If you need a little more speed, try a
standard blade 17x12. Stay away from wide blades...they don't help much in
generating thrust. If I can find the 18x10, I'll bring it to the field today
so you can try it. 

 

Matt

 

-----Original Message-----
From: ronlock at comcast.net
To: General pattern discussion <nsrca-discussion at lists.nsrca.org>
Sent: Sat, Mar 20, 2010 7:36 am
Subject: Re: [NSRCA-discussion] APC PROPS FOR OS 140 RX

You might try an 18x10 , the one with very wide blade at hub, tapering to
point at end.  Will likely require a significant spinner cone trim.  That
prop was next best to the 3b 10p for me.
Ron Lockhart

----- Original Message -----
From: "Ed Alt" < <mailto:ed_alt at hotmail.com> ed_alt at hotmail.com>
To: "General pattern discussion" < <mailto:nsrca-discussion at lists.nsrca.org>
nsrca-discussion at lists.nsrca.org>
Sent: Saturday, March 20, 2010 7:24:42 AM (GMT-0500) Auto-Detected
Subject: Re: [NSRCA-discussion] APC PROPS FOR OS 140 RX

Frank:

Don't go less than 10 pitch, you just won't have enough speed without
developing a lot of RPMs and a lot of noise to go with it.


Ed

 

From:  <mailto:frankjuliei at comcast.net> frank 

Sent: Saturday, March 20, 2010 7:10 AM

To:  <mailto:nsrca-discussion at lists.nsrca.org> 'General pattern discussion' 

Subject: [NSRCA-discussion] APC PROPS FOR OS 140 RX

 

Been running an APC 3- blade (15-10) re-pitched by Dave Lockhart on my Brio
for quite some time until yesterday when  I nicked a tip on landing. I  have
also used an 18.1 x 10 with pretty good results. I noticed that APC also has
an 18x 8 W IMAC prop and a 18x 6W 3D prop. I assume the later would be less
desirable, but who knows until it's tried. Has anyone used either and on
what motor ?

 

Thanks,

Frank

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