Antique Engines and Old Iron
[Home] - [HELP] - [Forums] - [Articles] - [Photo Gallery] - [Groups] - [Chat] - [Classified Ads] - [Subscribe] - [Links] - [Books] - [Sponsors] - [eBay Tools]

Go Back   SmokStak > SmokStak® Antique Engine Community > Antique Gas Engine Discussion
Forgot Password? Join Us!

Notices

Antique Gas Engine Discussion Meet collectors of hit and miss engines, ask questions about collecting, restoring and showing antique flywheel engines.

Antique Gas Engine Discussion

Setting a 3 hp Fairbanks Butterfly valve


this thread has 4 replies and has been viewed 1519 times

Reply
 
Thread Tools Display Modes
  #1  
Old 08-13-2005, 09:08:36 PM
Jonathan Widelo Jonathan Widelo is offline
Registered-III
 
Join Date: Nov 2004
Location: Hatfield, Massachusetts USA
Posts: 1,476
Thanks: 856
Thanked 708 Times in 279 Posts
Default Setting a 3 hp Fairbanks Butterfly valve

I have a 1919 Fairbanks Morse 3 horsepower Throttle governed engine, it uses the AB-33 Magneto, I first got it to run sometime ago, at first gas would drip out of the front of the mixer, i did a little playing with the butterfly setting and finally got it to run off the start side of the carb pretty good, my problem is I finally put gas in the tank and now it either refuses to run at all or it runs as if it is not getting enough fuel no matter how far you turn the other needle valve out, I would really like to get this engine to run better, does anyone have any ideas or suggestions on how to properly set the butterfly valve or other things I should try
Thanks,
~ Jonathan
Reply With Quote
Sponsored Links
  #2  
Old 08-13-2005, 10:10:34 PM
KidDynamo KidDynamo is offline
Subscriber
 
Join Date: Nov 2004
Location: Seattle, Washington, USA
Posts: 1,826
Thanks: 85
Thanked 437 Times in 316 Posts
Default Re: Setting a 3 hp Fairbanks Butterfly valve

If it runs on the starting needle and not on the tank needle could you have a problem with the tank fuel line? Perhaps the screen is plugged or the check valve at the bottom of the fuel line is plugged or the ball is not seating or non-existent.

I suppose you are able to shut off the starting needle when switching to the tank. Maybe your tank side needle valve/ seat is plugged????

These are pretty simple mixers. I wouldn't hesitate removing, cleaning and inspecting it, although I have not tried to remove the extreme internal parts such as the starting seat/suction pipe assembly and wouldn't do so unless I had to.
Reply With Quote
  #3  
Old 08-13-2005, 11:08:00 PM
Rich Martz's Avatar
Rich Martz Rich Martz is offline
Subscriber
 
Join Date: Oct 2004
Location: Peotone, Illinois, USA
Posts: 540
Thanks: 635
Thanked 523 Times in 123 Posts
Images: 23
Default Re: Setting a 3 hp Fairbanks Butterfly valve

Try stretching the spring on the air valve. I had the same problem and it worked for me.
Reply With Quote
  #4  
Old 08-14-2005, 11:08:33 AM
Elden DuRand's Avatar
Elden DuRand Elden DuRand is offline
Subscriber
 
Join Date: Nov 2004
Location: Port St. Joe, Florida USA
Posts: 6,897
Thanks: 10,490
Thanked 6,176 Times in 2,454 Posts
Images: 6
Default Re: Setting a 3 hp Fairbanks Butterfly valve

Quote:
Originally Posted by Rich Martz
Try stretching the spring on the air valve. I had the same problem and it worked for me.
If the suction (air) valve is anything like the one on my ZC-52, you can make it adjustable.

Tap the cast-iron cover plate to 1/4-28. Now, take a 1/4-28 bolt and cut it a little longer than the original pin. If you run out of thread, run a die over the unthreaded end far enough to jam a nut on it to hold the spring. You might want to grind the nut down so it doesn't act like more of a choke. This end goes to the inside. Now, take a hacksaw and file a slot in the outer end of the bolt.

With the spring slipped over the bolt, slip the valve washer on the bolt and screw the slotted end into the back of the cover plate and fit a locknut on the outside.

If you're close with your spring tension, you can adjust the bolt for best slow speed running. The needle valve sets the high speed (acceleration) mixture. You will have to go back and forth between the needle and spring adjustments several times to get them balanced but, when you do get 'em balanced, your engine will idle smoothly and will also accelerate to high speed without having to make any adjustments to the mixer.

Take care - Elden
Reply With Quote
  #5  
Old 08-17-2005, 06:54:30 AM
Jonathan Widelo Jonathan Widelo is offline
Registered-III
 
Join Date: Nov 2004
Location: Hatfield, Massachusetts USA
Posts: 1,476
Thanks: 856
Thanked 708 Times in 279 Posts
Default Re: Setting a 3 hp Fairbanks Butterfly valve

Thanks,
to those who replied to my post I am going to try to mess with the spring on the air valve plate, could the plate its self be a factor? the plate which is on it now is made of soft aluminum, the one i ordered from hit and miss was steel, i will try to mess with this engine again this weekend and see what happens
~ Jonathan
Reply With Quote
Reply


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
Half-Scale Valve Setting dbyam Steam Stationary Engines, Traction Engines, Steam Boats 25 02-20-2009 01:42:58 AM
Exhaust valve setting flasks Antique Gas Engine Discussion 3 02-26-2008 02:25:12 PM
Russell valve setting Bill Thurman Steam Stationary Engines, Traction Engines, Steam Boats 1 05-16-2004 11:43:54 PM
valve setting cushman #R SONNY L Antique Engine Archives 0 03-18-2003 11:36:49 PM
Setting Ex. Valve Timing... Michael Pawelek Antique Engine Archives 3 08-07-2000 04:36:59 PM


Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 11:38:30 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 - 2016 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277