RPM turned by YS-140L on Mezlik 16-12?

[Amar Shan]

Thanks, Wojtek.  15x12W isn't providing enough pull for long uplines on
25%, so I'm looking for more diameter.  Based upon
The suggestions I'm getting, I'm thinking of trying a 16x10.  I'm also
going to try 30% Cool Power ... some combination of these changes will
provide satisfactory performance, I'm sure!

(If not, might be time to build a new primary airplane... :-)

Amar

-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]
On Behalf Of Tomanek, Wojtek
Sent: Friday, September 20, 2002 10:35 AM
To: 'discussion at nsrca.org'
Subject: RE: RPM turned by YS-140L on Mezlik 16-12?

Amar

You may also want to try 16x11 on your L, you should get better vertical
than with 16x12 (either APC or Mejzlik).  Your rpm should be similar or
better to what you getting on the 15x12W.  It really depends on your
plane,
its weight, drag, and other.  On my setup 15x12W was better for a more
constant speed while the 16x11 had better vertical pull and that is what
I
am using on my L.

Wojtek
   

	-----Original Message-----
	From:	Troy Newman [SMTP:tanewman at qwest.net]
	Sent:	Thursday, September 19, 2002 6:07 PM
	To:	discussion at nsrca.org
	Subject:	Re: RPM turned by YS-140L on Mezlik 16-12?

	Well If you're getting 8300-8500 on 25% with the 15-12W that's
about
all I ever got out of an a 140L.......I have never run the Mezlik props
but
the 16-12 APC was too much load for an "L" unless I was running 30%+
	 
	 
	I think your motor is probably just fine....Another thing peak
it
out and run it just about 300 rpm short of peak. This will be on the
rich
side. But it will help keep it cool. 
	 
	If you want more power got to some Cool Power 30% heli
performance
fuel....The "L" will like it. In fact it will love it just like the
DZ's.....
	 
	 
	I'm using this fuel in everything now. Horizon recommends this
fuel
for the Saito motors...and I'm even running it sport planes with
.46's......This is really good fuel...I don't know of anybody that has
tried
it and not liked it.
	 
	 
	Troy
		----- Original Message ----- 
		From: Amar Shan <mailto:shan at smartt.com>  
		To: discussion at nsrca.org <mailto:discussion at nsrca.org>  
		Sent: Thursday, September 19, 2002 1:38 PM
		Subject: RE: RPM turned by YS-140L on Mezlik 16-12?

		Oops, forgot a couple of key details!
		 
		Running 25% Cool Power - at sea level.
		 
		I did run an APC 15-12W - it was tach'ing about
8300-8400 on
the ground.  I'm getting much better performance out of the Mezlik
16-12,
even though it's only turning ~7800-8000 on the ground.
		 
		The engine has fewer than 2 dozen flights on it since a
Performance Specialities (Verano/Shadel) rebuild.  (It didn't have much
more
than that number before the rebuild, either.  Rebuild was done because I
sent it in with a complaint of difficulty starting, not because of crash
damage).
		 
		Amar
		 
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