Received-SPF: none
 receiver=logan.com; client-ip=216.148.227.151; envelope-from=rlwhite@comcast.net
Date: Tue, 13 Feb 2007 07:53:40 -0700
From: Bob White <rlwhite@comcast.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Second engine start
Message-Id: <20070213075340.7f5be51e.rlwhite@comcast.net>
In-Reply-To: <list-1834860@logan.com>
References: <list-1834860@logan.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit

Hi Bill,

Do you have a prop on the engine?  If not, I would suggest you not run
it again until you do.  It's very easy to over rev the engine and you
won't need much throttle to get high revs. 

If it runs better with the cold start on, it sounds like one set of
injectors isn't working.  Even when I start on a 20 deg. day, it runs
rough with the cold start on and smooths out noticeably when I turn it
off.  Shutting off either primary or secondary injectors during runnup,
which also enables cold start, is hardly noticeable.  It runs real
smooth with cold start on and only one set of injectors.

Bob W.


On Tue, 13 Feb 2007 08:55:04 -0500
Bill Bradburry <bbradburry@allvantage.com> wrote:

> OK, so after having discovered a loose engine to battery ground (which 
> prevented the starter from properly engaging) and an open oil line 
> (which made a mess! that will long live in infamy) our hero continues 
> his engine start saga....
> 
> The engine would not seem to fire after these incidents and my friend, 
> Simon Ramirez, said he didn't think the plugs were firing.  We put a 
> timing light on the plugs and sure enough, no spark!
> 
> We discovered that the 10A fuse on the ignition circuit providing power 
> to the igniters had blown.  After replacing the fuse, we were getting 
> flashes on the timing light!  I am concerned about why the fuse might 
> have blown, but so far, it is holding up.
> 
> Now the engine starts, but only seems to want to run at high revs.  It 
> also seems to run better when cold start is on.  I have not figured out 
> if this is just because the engine is cold, or if the condition is 
> chronic.  The temp outside at the time was in the low 70s.
> 
> Bob, hangar next door, told me that on occasion, there was flame coming 
> out of the exhaust!  Also people started showing up from all over the 
> airport....That 3" straight out exhaust note is a tad harsh!  especially 
> when the engine only wants to run at high revs!
> 
> I am ready to entertain suggestions about getting the engine to settle 
> down and do the Hummm and Purrr that I hear so many of you talking 
> about.  Right now it is more like ripping down a tin building with 15 
> chainsaws...{:>)
> 
> I am already proud of it!!
> 
> Bill B
> 
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/


-- 
N93BD - Rotary Powered BD-4 - http://www.bob-white.com
First Flight:  11/23/2006 7:50AM - 2.4 Hours Total Time
Cables for your rotary installation - http://www.roblinphoto.com/shop/