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Search took 0.00 seconds; generated 96 minute(s) ago. Search: Posts Made By: Walter Atkinson
Forum: Messages 03-09-05, 02:04 PM
Replies: 54
Views: 171,360
Posted By Walter Atkinson
Larry: These are my thoughts on the issues of...

Larry:

These are my thoughts on the issues of deciding which engine monitor to buy.

You need single digit reads on EGT and CHT for good trouble shooting and lean tests, and the ability to download...
Forum: Messages 03-09-05, 12:02 PM
Replies: 59
Views: 172,625
Posted By Walter Atkinson
Ernie: **there is general agreement by engine...

Ernie:

**there is general agreement by engine manufacturers and overhaulers that ROP operation on this type engine is easier to manage and far more tolerant of pilot mis-management.**

That is a...
Forum: Messages 03-09-05, 11:37 AM
Replies: 59
Views: 172,625
Posted By Walter Atkinson
Kyle: **Was anything done to either duplicate,...

Kyle:

**Was anything done to either duplicate, or otherwise allow for, the free-air slipstream velicoty at cruise (aka a wind-tunnel-like arrangement)? Otherwise, wouldn't "ThetaPP" be over-stated...
Forum: Messages 03-09-05, 09:42 AM
Replies: 59
Views: 172,625
Posted By Walter Atkinson
Many of the things RAM says about engine...

Many of the things RAM says about engine operation are not in harmony with the known laws of physics. You have picked up on several of them. Now, there is that outside chance that Sir Isaac Newton...
Forum: Messages 03-09-05, 08:54 AM
Replies: 59
Views: 172,625
Posted By Walter Atkinson
Kyle: Yes, as you pay more attention to the...

Kyle:

Yes, as you pay more attention to the engine, you will begin to want better data on its function. It goes with the territory of good engine management. Sorry. <g>

As for reducing rpms...
Forum: Messages 03-08-05, 12:17 PM
Replies: 59
Views: 172,625
Posted By Walter Atkinson
Guy: **Just curious Walt, what will the target...

Guy:

**Just curious Walt, what will the target EGT be in climb?**

That changes from engine to engine, but a very good starting point is 1275-1300dF on most of the NA engines we're dealing with. ...
Forum: Messages 03-08-05, 08:57 AM
Replies: 59
Views: 172,625
Posted By Walter Atkinson
Kyle and Kevin: Good questions. 1) The data...

Kyle and Kevin:

Good questions.

1) The data suggests that Kevin is right about not pulling the mixture back on the TC'd engine in the climb. You will find much cooler CHTs during the climb if you...
Forum: Messages 03-07-05, 08:51 AM
Replies: 59
Views: 172,625
Posted By Walter Atkinson
Kyle: In answer to your questions, this was...

Kyle:

In answer to your questions, this was posted on the Cessna board this morning. It speaks directly to the points we are discussing. He's flying a CARBURETED 182. Notice that he's flying...
Forum: Messages 03-07-05, 08:34 AM
Replies: 59
Views: 172,625
Posted By Walter Atkinson
Kyle: You understand that correctly. To keep...

Kyle:

You understand that correctly. To keep ICPs under control at 75% power you need to be richer than about 125dF ROP or leaner than about 20dF LOP. Doing so is beneficial to longevity. The Red...
Forum: Messages 03-06-05, 06:07 PM
Replies: 59
Views: 172,625
Posted By Walter Atkinson
Kyle: It seems to me that you're gaining a...

Kyle:

It seems to me that you're gaining a pretty good hold on the concepts. Some points to further your understanding:

**I don't actually think that the LOP guys and the manufacturers are as far...
Forum: Messages 03-05-05, 04:12 PM
Replies: 59
Views: 172,625
Posted By Walter Atkinson
Kyle: Yep. My position is that GAMI's can save...

Kyle:

Yep. My position is that GAMI's can save you money....... but, an engine monitor can save your life. The engine monitor is much more important and GAMI will tell you the same thing. If you...
Forum: Messages 03-05-05, 11:39 AM
Replies: 59
Views: 172,625
Posted By Walter Atkinson
Kyle: All of you points a very well taken and IF...

Kyle:

All of you points a very well taken and IF the original assumption were valid concerning the design issues, I would agree 100%. Let's first get one issue attended to , then we can discuss the...
Forum: Messages 03-05-05, 11:03 AM
Replies: 54
Views: 171,360
Posted By Walter Atkinson
Kyle: The study was done by American Airlines...

Kyle:

The study was done by American Airlines and the result was a TBO extension from 800 hours to 3600 hours, by doing nothing more than stopping running the engines ROP and making sure they were...
Forum: Messages 03-04-05, 07:43 PM
Replies: 59
Views: 172,625
Posted By Walter Atkinson
Ernie: **On yourt last message, the one which is...

Ernie:

**On yourt last message, the one which is just above this reply, I for one welcome your participation.**

Thank you. That is very kind.

**I'm not buying the rest of your points in that...
Forum: Messages 03-04-05, 05:09 PM
Replies: 59
Views: 172,625
Posted By Walter Atkinson
Some time back I particpated in this forum after...

Some time back I particpated in this forum after being invited to come offer scientific information about piston engine management. There was a very rude Forum Bully here who went by the moniker of...
Forum: Messages 03-04-05, 12:36 PM
Replies: 14
Views: 30,540
Posted By Walter Atkinson
An interesting issue to consider is the fact that...

An interesting issue to consider is the fact that top end problems are seldom catestrophic (rare cases are, but they are the exception) and they telegraph their impending failure for many hours if...
Forum: Messages 03-04-05, 12:27 PM
Replies: 3
Views: 20,821
Posted By Walter Atkinson
NIck: Do you remember the engine run where we...

NIck:

Do you remember the engine run where we showed you the high ICPs and thetaPP close to TDC when the engine was ROP and not rich enough? As soon as the fuel flow was turned up above the redline,...
Forum: Messages 03-04-05, 12:09 PM
Replies: 54
Views: 171,360
Posted By Walter Atkinson
Kyle: I'm going to combine a few comments into...

Kyle:

I'm going to combine a few comments into one post. Some of these things are not in answer to you, but to others.

The scientific study you would like to have done has already been done... ...
Forum: Messages 03-03-05, 03:48 PM
Replies: 54
Views: 171,360
Posted By Walter Atkinson
Kyle: For the most part I agree with your post. ...

Kyle:

For the most part I agree with your post. A couple of very minor nits in the interest of accuracy:

1) The mixture where the highest CHT's and highest ICPs are noted is between 25 and 75dF...
Forum: Messages 03-03-05, 03:09 PM
Replies: 59
Views: 172,625
Posted By Walter Atkinson
There have been some really good comments made in...

There have been some really good comments made in this thread, but there are a few statements that I'd like to address:

1) The main reason to operate LOP is not fuel savings, although that is a...
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