Oil Field Engines
[Home] - [HELP] - [Forums] - [Groups] - [Classified Ads] - [Subscribe] - [Books] - [Sponsors] -

Go Back   SmokStak > SmokStak® Antique Engine Community > Oil Field Engines & Related Equipment
Forgot Password? Join Us!

Notices

Oil Field Engines & Related Equipment OFES members otherwise known as "Oafs". If you like "BIG OLD GREASY RUSTY OIL FIELD ENGINES, you're in the right place. Founded by Russell Farmer.

Oil Field Engines & Related Equipment

My mule..20HP South Penn running wild.


this thread has 3 replies and has been viewed 1361 times

Reply
 
Thread Tools Display Modes
  #1  
Old 05-06-2017, 02:35:22 PM
Sekiar Sekiar is offline
Subscriber
 
Join Date: Jul 2005
Location: Bentonville, Arkansas, USA
Posts: 261
Thanks: 364
Thanked 501 Times in 115 Posts
Photo My mule..20HP South Penn running wild.

Worked on my 20hp South Penn yesterday still sorting out problem that came with it. I checked the packing on the piston's rod and none was there...one reason for sending smoke out around the rod when she often backfired Had some 30+ year old packing rope and that took care of that problem, I hope. I'm thinking that the propane acc tank following the control valve is incorrect. It seems to me that it should come before the valve? Any advice would be welcome. On the first run I noticed the flywheels moving backward when she hit. Checked the main bearings and removed many spacers and for now that problem is corrected. Anyway here's a poor video of my wild old mule running as I try and get her under control. Actually she settled down and ran fine yesterday, however no camera was on duty. Warm in NW Arkansas today and drying out. Charles
https://www.youtube.com/watch?v=Rhe0...ature=youtu.be
Reply With Quote
Sponsored Links
  #2  
Old 05-06-2017, 06:09:06 PM
KyleBlankenship's Avatar
KyleBlankenship KyleBlankenship is offline
Subscriber
 
Join Date: Nov 2004
Location: Brookville, Ohio, USA
Posts: 1,040
Thanks: 338
Thanked 597 Times in 266 Posts
Default Re: My mule..20HP South Penn running wild.

i have learned on my south penn, it doesnt like to be tight. a few years ago i went thru and re shimmed all the bearings and crosshead to where i thought it was a good fit, well i had to back everything off because it wouldnt run right. very sparatic.

your accumulator needs to be before the diamond valve and on mine the intake valve has very little tension on the spring. mine also backfires and snorts at times too.
Reply With Quote
The Following User Says Thank You to KyleBlankenship For This Post:
  #3  
Old 05-07-2017, 05:08:10 PM
Sekiar Sekiar is offline
Subscriber
 
Join Date: Jul 2005
Location: Bentonville, Arkansas, USA
Posts: 261
Thanks: 364
Thanked 501 Times in 115 Posts
Default Re: My mule..20HP South Penn running wild.

Today I planned on reversing the accumulator and valve, however remembering back when I had a number of oil field engines ranging up to 40hp I never used an accumulator tank on any of them. So today I just removed the tank and the old mule ran like a charm. The multi-turn gas valve worked as it should without the delay and responded quickly to control the speed. I'm happy with how it runs and will leave it alone for now. Might not be the right way, but it's just fine with me. Charles
Reply With Quote
The Following User Says Thank You to Sekiar For This Post:
  #4  
Old 05-09-2017, 06:16:43 PM
Andrew Mackey Andrew Mackey is offline
Moderator
 
Join Date: Nov 2004
Location: Rockaway, New Jersey USA
Posts: 14,145
Thanks: 1,991
Thanked 6,766 Times in 4,300 Posts
Default Re: My mule..20HP South Penn running wild.

The 20 HP OCSP my engine club owns uses an accumulator I built. It is made of Type K copper, with pressure caps at both ends. 4" diameter, 42" long, 11" WC pressure. 3/8" supply line from regulator to Accumulator, 1" pipe to diamond valve, 2 1" gas flex hoses fed thru 1" x 11/2" bull headed Tees into the intake assembly. When the intake valve itself was made, the club had an original to copy. They thought the valve was too heavy, so made it about 1/2 a pound lighter than the original. BIG mistake! We couldn't get the lighter valve to stop bouncing off the seat unless we cranked the spring adjustment on the stem nearly all the way up the stem. If it aint broke, don't fix it sure applied there!

We had the same problem tightening up the mains on our OCSP. Take out the shims and the cross head bearings bound up. When first found, the bearings had about 1/2" of play We now run it with about .030". The crank moves a bit, but short of re-pouring new bearings, we are satisfied that the engine will run all day with no problems.

We are using a 250# propane tank with a dual feed outlet. One side feeds the engine intake @11" WC, the other the hot tube, on a grill regulator set at 5 PSI. With that size tank, we don't have to worry about icing and fuel starvation due to evaporative cooling of the liquid propane. When we used a 100 pound cylinder, we only got about 2 hours running before the tank froze up to the point where the engine would starve for gas. Running a garden hose on the tank helped, but made a mess!
Reply With Quote
The Following User Says Thank You to Andrew Mackey For This Post:
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
South Penn first run! Sekiar Hit & Miss Gas Engine Discussion 0 04-26-2015 06:10:41 PM
Oil City / South Penn running. Andrew Mackey Oil Field Engines & Related Equipment 0 08-01-2013 01:09:49 PM
South Penn Sekiar Hit & Miss Gas Engine Discussion 0 06-07-2012 07:50:41 PM
Running the Oil City/South Penn engine Andrew Mackey Oil Field Engines & Related Equipment 0 08-08-2010 10:47:42 AM
Oil City/South Penn - running! Andrew Mackey Oil Field Engines & Related Equipment 10 03-15-2008 02:02:40 PM


Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 06:26:00 AM.

Smokstak and Enginads site search!


All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark - A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2019 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277