CDSG Forums Forum Index CDSG Forums
A place to discuss all aspects of Coast Artillery
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Osgood-Farley Generator Room

 
Post new topic   Reply to topic    CDSG Forums Forum Index -> American Coast Defense
View previous topic :: View next topic  
Author Message
JoeJanesic



Joined: 29 Aug 2007
Posts: 44
Location: San Pedro, CA

PostPosted: Sun Jan 10, 2010 11:03 pm    Post subject: Osgood-Farley Generator Room Reply with quote

Hey everyone, itís been a while since I reported on the work we are doing here in the power room for Battery Osgood-Farley. Over the past few years we have been working to restore the batteryís power room. The project began about two years ago when we purchased one of the few known surviving operational GM-12ís. Here's the link to the video we posted when the generator first arrived at the battery.

http://www.youtube.com/watch?v=uc9hhjkFupA

Over the past few years, we have worked on a number of projects relating to the generator, these included bolting the generator to the floor, replacing the cold water return pipes from the radiators and getting the electric fan motors working.

The electric fans pose two special problems first the cold water return pipes were corroded; this problem was solved by digging up the engineered channel that contained the pipes. After examining we found the original pipes installed in 1914 were too badly corroded. Over a period of months, these pipes were cut out and replaced. The new installation was then pressure tested and the trench re-capped. The second problem was the electric motor for pulling air through the radiator itself runs on a voltage that is no longer in common use. (110v 3-pahse). We also found out that the motor itself had seized and no amount of effort could get it to turn.

After many hours of hard work by our talented team of engineers and machinists, Iím happy to report that the fan motor has been re-built using all original parts and we are well on our way to solving the problems with the motors electrical needs. Two weeks ago we managed to get the fan motor to run by supplying 110v single-phase and simulating a second phase with a large capacitor. This gives the motor enough power to run but only after some human assistance.

http://www.youtube.com/watch?v=Jrmu9oCYWlo

Weíre still working on a more permanent solution and the creation of the 3-phase converter. Since this video was made, we have managed to get the wobble out of the shaft, and the motor is now ready to be re-mounted in the radiator room.

Finally, over the weekend we managed to do a full test of the GM-12 with all the major components in place. The video below was shot while the motor was running, connected to its new muffler, and with water circulating through the cooling system. Our goal is to complete the rest of the system this year and have regular demonstrations sometime in the future.

http://www.youtube.com/watch?v=ddhcUDI74k4

http://www.youtube.com/watch?v=5PiefJU3Km4
Back to top
View user's profile Send private message Send e-mail Visit poster's website MSN Messenger
JoeJanesic



Joined: 29 Aug 2007
Posts: 44
Location: San Pedro, CA

PostPosted: Sun Apr 01, 2012 4:47 am    Post subject: Updated pictures of the radiator room Reply with quote



Last edited by JoeJanesic on Tue Apr 03, 2012 1:12 am; edited 3 times in total
Back to top
View user's profile Send private message Send e-mail Visit poster's website MSN Messenger
armyjunk



Joined: 25 Aug 2007
Posts: 213
Location: KENTUCKY

PostPosted: Mon Apr 02, 2012 10:00 pm    Post subject: Reply with quote

very nice
Back to top
View user's profile Send private message
JoeJanesic



Joined: 29 Aug 2007
Posts: 44
Location: San Pedro, CA

PostPosted: Tue Apr 03, 2012 12:34 am    Post subject: Update Reply with quote

Time to share part two of the story. As I mentioned above, back in 2009 we purchased a DC-version GM-12 form a private collector in Pennsylvania. This machine is identical to the generator used in most of the Endicott batteries around the country. It produces 25kw of 110v direct current and can be started manually, with a shotgun blank, or with a special electric starter we built. This unit was installed on the number 2 pad and connected to the radiator system in the next room. As I mentioned in the initial post, we had to dig up the return pipes under the floor and replace them.


Because the Taft Period batterys of Fort MacArthur were all designed to work with AC generators, we couldnít connect this generator to the main board, and therefore could not use it to power the battery or the cooling fans on the radiators. Despite not being the correct voltage output, itís still a great machine and fun to demonstrate to our visitors.
Back to top
View user's profile Send private message Send e-mail Visit poster's website MSN Messenger
Display posts from previous:   
Post new topic   Reply to topic    CDSG Forums Forum Index -> American Coast Defense All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group