NATIONAL THRESHERS Steam Engine Economy Run

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22343 Lemoyne Road, Pemberville, Ohio 43450.

I would like to report on the revival of the National Threshers Steam Engine Economy Run, but first a little background.

The old A. D. Baker prony brake that the National Threshers used for years wasn't being used anymore and needed repairing. So a few years ago, Steve Lash away and I repaired the brake and learned how to operate it accurately. Since then we have had many hours of enjoyment operating the brake and hearing the different engines bark. We use it at the National Threshers and Five Points Shows where we have had a lot of good help operating it.

We started thinking about operating an economy run like they did years ago when Leroy Blaker was president of National Threshers. Tracy Powers and I looked through old IMA's and came up with some guidelines by discussions with older engineers and experimenting before the show.

Results Of The Economy Run Of Steam Traction Engines At National Threshers Assn. Reunion At Montpelier, Ohio June 22, 23, 24, 1961

Owners Name

Make of Engine

H. P. Rating

HP. Load At Brake

Lbs. Of Coal Used

Lbs. Of Water Used

Lbs. Of Coal Hp. Hr.

Lbs. Of Water Hp. Hr.

Lbs. Of Water Eva Lb. Coal

Engineer

National Threshers

Port Huron

19-65

49.50

172

1500

3.47

30.01

8.71

LeRoy Blaker

Percy Sherman

Baker

23-90

59.40

196

1758

3.30

29.59

8.96

Percy Sherman

William Benner

Baker

21-75

42.3

194

1294

4.58

30.59

6.66

William Benner

Walter Knapp

Port Huron

19-65

40.75

122

1216

2.99

29.84

9.97

Walter Knapp

LeRoy Blaker

Port Huron

24-75

57.96

204

1704

3.51

29.39

8.35

Sawmill Engine

Irel Ashbaugh

Minneapolis

20-60

46.15

250

1840

5.41

39.87

7.36

Irel Ashbaugh

Dean Sounders

Port Huron

24-75

49.20

204

1344

4.14

27.32

6.58

Dean Sounders

LeRoy Blaker

Port Huron

24-75

61.5

184

1538

2.99

25.01

8.35

LeRoy Blaker

At Montpelier, Ohio June 24, 1960

John Holp

Advance

20-60

45.20

268

1472

5.93

32.56

5.49

John Holp

At Montpelier, Ohio June 24, 1955

LeRoy Blaker

Case

22-65

65.00

240

2092

3.75

32.25

8.73

Blaker

At Alvordton, Ohio October 13, 1956

LeRoy Blaker

Port \ Huron

24-75

| 57.78

130

1346

2.25

23.35

10.35

LeRoy Blaker

Results Of The Economy Run Of Steam Traction Engines At National Threshers Assn. Reunion At Montpelier, Ohio June 23, 24, 25, I960

Owners Name

Make Of Engine

H. P. Rating

HP. Load Brake

Lbs. Of Coal Used

Lbs. Of Water Used

Lbs. Of Coal HP. HR.

Lbs. Of Water HP. HR.

Lbs. Of Water Eva. Lb. Coal

Engineer

John Holp

Advance

20-60

45.2

268

1472

5.93

32.56

5.49

John Holp

Wilford Bunyea

Harrison Jumbo

20-65

47.2

304

1691

6.44

35.8

5.56

A. H. Shear

National Threshers

Port Huron

19-65

50.22

234

1582

4.65

30.5

6.76

Peter Bucher

LeRoy Blaker

Port Huron

24-75

57.65

133

1164

2.32

20.2

8.75

LeRoy Blaker

Percy Sherman

Russell

25-75

61.12

218

1752

3.57

28.66

8.03

Percy Sherman

Raymond

Baker

21-75

65.05

376

2080

5.8

31.94

5.26

Louis Fork

Results of the Economy Run Of Steam Traction Engines at National Threshers Assn. Reunion Aat Wauseon, Ohio JUNE 23, 24, 25, 26, 1988

Owners Name

Make of Engine

H.P. Rating

H.P. Load at Brake

Lbs. Of Coal Used

Lbs. Of Water Used

Lbs. Of Coal HP. HR.

Lbs. Of Water HP. HR.

Lbs. of Water Eva Lb. Coal

Engineer

Tracy Powers

Port Huron

19-65

46.9

172

1431.8

3.66

30.5

8.34

Tracy Powers

David Schramm

Russell

20-60

50.6

311

2112.2

6.14

41.7

6.79

David Schramm

Lashaway Family

Frick*

16-50

35.1

213

1668.2

6.06

47.5

7.84

Jim Lashaway

Ed Hurd

Keck-Gonnerman*

22-75

52.1

344

1320.9

6.6

50.7

7.68

Ed Hurd

Howard Miller

Russell

6-18

13.75

115

816.2

8.36

59.36

7.10

Howard Miller

David Schramm

Russell

20-60

50.2

230

1926

4.58

38.36

8.37

David Schramm

Lashaway Family

Frick*

16-50

40.8

369.5

1976

9.05

48.4

5.35

Steve Lashaway

Howard Miller

Russell

6-18

10

79

614

7.9

61.4

7.77

Howard Miller

David Headley

Sawyer Ma

20-60

32.3

215

1288.8

6.6

39.9

6.04

David Headley

* denotes double cylinder

At the show the economy run worked well but there are variables that affect the outcome such as how hot the weather is, the temperature of the feed water in the barrels, how much horsepower the test was run at and other things that the engineer tries to control.

We ran a warm-up period for approximately fifteen minutes and then ran the test for a half hour at about three-quarters of the rated belt horsepower or whatever horsepower the engineer preferred. We took horsepower readings every five minutes. The fire and water level was checked at the beginning and end of each test. The tests would be more accurate if they were longer, but at a show you don t have time. But then again, everyone had the same handicap.

Considering we have been 'sitting around scratching our heads' here in Ohio, we think we compared pretty good with the old results.

Notice the difference of the old tests and ours, remembering that some engines won't compare as well in the tests due to reduced boiler pressure which drops the efficiency of the engine. On the whole, we used more coal and water per horsepower/hour but our pounds of water evaporated per pound of coal were pretty close.

Tracy Powers did very well with his Port Huron. His results show how much a jacket and compound cylinder can help. I was better prepared for my second test and the water was warm in the barrels so my results improved. It is interesting how well the double cylinder engines did except where Steve Lashaway experimented by trying to run more horsepower and the engine economy dropped. Next year we hope to get more engines and some different makes of engines to test.

The economy run is a good test of engine mechanical restoration and an engineer's ability to fire economically as they were intended and not just 'pouring on the coal.' I am sure we will all get better with more practice.

I would like to thank all my friends at the Five Points Steam Threshers Club and the National Threshers Association that helped with the test. I'm sure the old timers that got us involved with this hobby would be pleased to know we are still trying to carry on.