YS 140 problem

[Dave Harmon]

No pressure nipples on the bottom rear of the backplate.
http://www.ysperformance.com/

Click on ‘products’ then ‘140 Sport’
Regards

Dave Harmon
NSRCA 586
K6XYZ[at]valornet[dot]com
Broken Arrow, Ok. 
-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]
On Behalf Of Daniel J. Hamlett
Sent: Saturday, July 16, 2005 10:02 AM
To: discussion at nsrca.org
Subject: Re: YS 140 problem
Importance: High

How exactly should I be able to tell ???

Randy wrote: 
U sure U got a 140 Sport there Mate?
----- Original Message ----- 
From: Daniel J. Hamlett 
To: discussion at nsrca.org 
Sent: Saturday, July 16, 2005 10:22 AM
Subject: Re: YS 140 problem

I am getting 8400-8450.  That is why I thought that I was ok on the
size.

John Ferrell wrote: 
My two cents worth....
That is the first time I have heard of that much prop on a Sport 140. It
is way too much prop for break in of a new engine. I don't know if there
is any damage due to that load. I use about 40 ounces of fuel on tat
engine to break it in with a 15-10 prop at about 8200 rpm. 
 
I feel the bigger prop will generate more heat and will need more
latitude for mixture control than the YS system provides. When more prop
than a 15-12 or 16-10 is used on a YS 140 engine (not DZ!) more nitro is
needed. There is more oxygen available in the higher nitro fuel so you
have a wider needle available.
 
BTW, what is the max rpm you get out of a 17-10 with 20% fuel?
 
John Ferrell    
http://DixieNC.US
----- Original Message ----- 
From: Daniel J. Hamlett 
To: discussion at nsrca.org 
Sent: Thursday, July 14, 2005 10:06 PM
Subject: Re: YS 140 problem

The engine is a sport.  It has less than 40oz through it.  I am running 
the 1.40, NHP 5/8th header and ES carbon 5/8th inlet pipe.  Sorry I
forgot to add this on the original post.

Bob Kane wrote: 
Which 140?  FZ, L, DZ, Sport?  I assume it must be a
DZ swinging a 17X10?

      

To access the email archives for this list, go to
http://lists.f3a.us/pipermail/nsrca-discussion/
To be removed from this list, go to http://www.nsrca.org/discussionA.htm
and follow the instructions.

List members email returned for mailbox full will be removed from the list.