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Yes, temperature sensor in particular can give misleading
information at times.
I remember in my much younger days heading across
the desert outside of Bakersfield, Ca in and old, worn-out 1952 flat-head 8
Mercury with over 100K miles ( a lot in those days). It had always ran hot
and used water due to cracks in the cylinder head and block - well, I was head
home after being in Calif for overly long. As the sun rose so did the
coolant temperature - I said to hell, with it - I'm going to run her until the
engine blows.
Well, after a few minutes I was surprised to discover the
coolant temps headed back down. It got down into a acceptable
range and I continued on arriving safely home in Oklahoma.
It was not until much later telling the story to a
knowledgeable mechanic that he informed me the reason that the coolant temp went
down was I had boiled out the coolant and there was none to bath the temperature
sensor and air being a poorer conductor of heat than water - the temp sensor was
not getting a true heat load. The reason the engine did not blow he
claimed was that it was so worn out that all the tolerances was large
enough to accommodate the expansion caused by the heat.
So, yes, I like sensors, but I trust
nothing!!!.
Anytime you hear an shut down rotary engine
"ping" after a run up - you know it probably was hotter than it should have
been.
Hope things get better for you - talk about a run of sour
luck.
Ed
Sent: Wednesday, October 12, 2011 2:04 PM
Subject: [FlyRotary] Re: The rotary may live.
Thanks for the offer Ed ,but....uh, no. I had been having
quite a lot of fun in my very expensive winged go-cart. However, I am once
again delayed. I had rotator cuff surgery on Friday and believe it or not,
it is difficult to work on my plane with one arm (really hard to type
too). On that note, the engine seems to be running swell. I am
having some sensor problems that i will address
in a separate post. I trashed my first engine due to bad sensors.
FWIW.
Chris
From: Rotary motors in aircraft [flyrotary@lancaironline.net]
on behalf of Ed Anderson [eanderson@carolina.rr.com]
Sent: Wednesday,
October 12, 2011 12:44 PM
To: Rotary motors in
aircraft
Subject: [FlyRotary] Re: The rotary may
live.
Well, Chris,
Some of us get notoriety because of time in unpowered
flight - others for their teething problems - want to swap? {:>)
Ed
Sent: Wednesday, October 12, 2011 1:10 PM
Subject: [FlyRotary] Re: The rotary may live.
Teething problems.....I resemble that remark....
Chris Barber
Houston
91 turbo 13b
Velocity SE
From: Rotary motors in aircraft [flyrotary@lancaironline.net]
on behalf of Ed Anderson [eanderson@carolina.rr.com]
Sent: Wednesday,
October 12, 2011 11:59 AM
To: Rotary motors in
aircraft
Subject: [FlyRotary] Re: The rotary may
live.
Hi Jeff,
590 hours in 12 years. However, I have only
flow a few hours in the last 3 years, mainly to Sun & Fun and other
Flyins. Just got too busy with other things (my small business in
electronics is growing)
I have a 1987 Turbo 13B
sitting in my shop as well as various parts such as an extra e shaft, ignition
modules, CAS, etc.
The only information I
have ever seen on TBO of a rotary in aircraft use was done by a German
University for the Wankle institution - and they estimate 4000 hour TBO.
Since I would have been happy with 1000 hours - I have not worried about
it. Tracy did some measurements at around the 800 hour point on his
original junk yard 13B and found hardly any wear on the parts designed to wear
(like apex seals). So it appears once you have your engine set up and past
the teething problems you can expect a long run time.
Ed
Sent: Wednesday, October 12, 2011 12:48 PM
Subject: [FlyRotary] Re: The rotary may live.
Hey Ed, how many hours do you have now, in how many years -
500 hrs in 10 years, something like that?
What is the likely TBO in your configuration and flight
profile - 1000, 1500?
How many useable spare core parts do you have sitting on the
shelf?
We had all better keep our existing engines alive and stop
dreaming about 16Xs
frankly Im surprised Mazda has toughed it out with the
rotary this long.
Happily flying mine these days, approaching 60 hours
Jeff
|
From: |
"Ed
Anderson" <eanderson@carolina.rr.com> |
|
Subject: |
Re:
[FlyRotary] The rotary may live. |
|
Date: |
Tue,
11 Oct 2011 23:55:51 -0400 |
|
To: |
"Rotary
motors in aircraft"
<flyrotary@lancaironline.net> | |
| |
|
Thanks,
Sam
One can only
hope it will be in the not so distant future.
Ed
Edward L.
Anderson
Anderson Electronic Enterprises LLC
305 Reefton
Road
Weddington, NC 28104
http://www.andersonee.com
http://www.eicommander.com |
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