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Ok, guess I get no credit - flunked again
{:>)
Ed
----- Original Message -----
Sent: Sunday, September 16, 2007 9:54
AM
Subject: [FlyRotary] Re: One for the
smart guys
No fair ED. I told you it was ignition related. I hope this
helps someone else to not make the same mistake I made.
Mark
On 9/16/07, Ed
Anderson <eanderson@carolina.rr.com>
wrote:
Well, I think I can take partial credit by saying
something {:>) was causing the reluctor/hall effect sensor to
trigger at the wrong time or perhaps twice as often. The ferrous 4130
would certainly cause the sensor to trigger erratically by interfering with
the magnetic field of magnet.
But, must admit - that would be a hard one to
find.
Ed
----- Original Message -----
Sent: Saturday, September 15, 2007
1:56 PM
Subject: [FlyRotary] Re: One for the
smart guys
Ok, look all right on the oscilloscope within the
range and setting that you would expect to look at/with - implies that you
found something outside of that range. So some sort of sporadic
signal occurring at a higher/lower periodicity (I would pick higher)
than expected. I am not familiar with the Renesis CS
pickup but could it have been something causing the reluctor(hall effect?)
sensor to trigger at the wrong time or perhaps twice as often???
Ed
----- Original Message -----
Sent: Saturday, September 15, 2007
2:39 PM
Subject: [FlyRotary] Re: One for
the smart guys
I
can't give away the answer but I can tell you it was not obvious
when looking at the signal with an oscilloscope. At least not in the
range and setting used to trigger the CAS signal.
Bobby
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net ] On Behalf Of Mark
Steitle
Sent: Saturday, September 15, 2007 6:54 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: One for the smart guys
Ed,
You are getting closer when you stated that it must be erratic
ignition. (I wish I had someone to give me hints). Yes, the
ignition timing was too far advanced, but retarding the timing didn't
correct the problem. The coils are LS1 units, 6 ea, so any
individual coil isn't firing any more often than on a
2-rotor. So, what's causing the erratic ingition? That's the
question.
Mark
On 9/15/07, Ed
Anderson <eanderson@carolina.rr.com > wrote:
Hey, No Fair! Mark. Most of us
do not have a Renesis shop manual. But, lets see the old CS had
three wires, the new one has two wires - I get it - there is a wire
missing {:>).
So it sounds like the problem was
indeed ignition - well, its almost always either fuel or spark
causing a problem. So if fuel is more or less ruled out it
defaults to ignition. It probably wouldn't be a rev limiter as
they simply cut out above a certain rpm. So either your ignition
timing somehow was off at higher rpm (too much advance?) or else
your ignition was erratic in its firing (such as exceeding the
capability of the coils to recharge between firings - unlikely in this
case).
But, without a shop manual to give me more
insight, I must say I'm out of ideas.
Ed
----- Original Message -----
Sent: Friday, September 14,
2007 10:52 PM
Subject: [FlyRotary] Re: One
for the smart guys
Now Rusty!!! That's too obvious. ;-)
OK, another hint... I got a hint of what might be causing my
problem from the ignition section of the Renesis shop
manual.
Mark
On 9/14/07, Russell Duffy <rusty@radrotary.com
> wrote:
OK, I'll give you a hint... it was related to my
decision to change over from the original CAS to the Renesis
CAS. I got that bright idea from last year's rotary get
together at Tracy's.
I've got it. YOU
were the problem :-)
Rusty
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