AFCA Forums Home
Home Search search Menu menu Not logged in - Login | Register

 Moderated by: Steve Cunningham, Rod Rogers, Larry Hancock
New Topic Reply Printer Friendly
out of clock  Rate Topic 
AuthorPost
 Posted: Thu Mar 14th, 2019 01:06 am
  PMQuoteReply
1st Post
Ray Vacca
AFCA Member
 

Joined: Wed Feb 20th, 2019
Location:  
Status: 
Offline
I am sure that this has been discussed many times before on the forum but here goes. What does it mean when a fan is out of clock?Inquiring minds want to know.
Thank you
Ray

Back To Top PMQuoteReply  

 Posted: Thu Mar 14th, 2019 01:09 am
  PMQuoteReply
2nd Post
Alec Burns
AFCA Member


Joined: Wed Jul 22nd, 2015
Location:  
Status: 
Offline
Hey Ray,

If you use the search feature, a simple search of "out of clock" will yield the answers you need.

Cheers

Back To Top PMQuoteReply

 Posted: Thu Mar 14th, 2019 01:17 am
  PMQuoteReply
3rd Post
Mitch W. Romero
AFCA Member


Joined: Tue Jan 22nd, 2013
Location: New Iberia, Louisiana USA
Status: 
Offline
A blade out of clock means the blade on a fan cannot be balanced until the correction is made -we use strobe light - dubro small airplane balance tool and visual blade twist and front to rear observation to make it the best we can on a true alignment.

Back To Top PMQuoteReply  

 Posted: Thu Mar 14th, 2019 01:37 am
  PMQuoteReply
4th Post
Steve Stephens
AFCA Member


Joined: Mon Nov 14th, 2005
Location: San Anselmo, California USA
Status: 
Offline
Picture a clock with FOUR HANDS.   One hand at 12, 3, 6, and 9.   Now move the hand at 3 to 3:30.   It is now "out of clock".   Put that hand back to 3 and it will be "in clock".   

Back To Top PMQuoteReply

 Posted: Thu Mar 14th, 2019 01:38 am
  PMQuoteReply
5th Post
Dave McManaman
AFCA Member


Joined: Sat Apr 22nd, 2017
Location: Lincoln, Nebraska USA
Status: 
Offline
Steve Stephens wrote: Picture a clock with FOUR HANDS.   One hand at 12, 3, 6, and 9.   Now move the hand at 3 to 3:30.   It is now "out of clock".   Put that hand back to 3 and it will be "in clock".   
Best explanation ever!

Back To Top PMQuoteReply  

 Posted: Thu Mar 14th, 2019 03:58 am
  PMQuoteReply
6th Post
George Durbin
AFCA Member


Joined: Fri Nov 2nd, 2012
Location:  
Status: 
Offline
What Steve said!

Geo...

Back To Top PMQuoteReply

 Posted: Thu Mar 14th, 2019 10:39 am
  PMQuoteReply
7th Post
Lane Shirey
AFCA Member


Joined: Wed Apr 30th, 2014
Location: Downingtown, Pennsylvania USA
Status: 
Offline
But also keep in mind that GE was known to purposely knock their blades out of clock to balance them. It makes balancing them quite interesting.  I had one the other week.  You won’t know until you put it into clock and it get dramatically worse.  

Back To Top PMQuoteReply  

 Posted: Thu Mar 14th, 2019 12:10 pm
  PMQuoteReply
8th Post
Ray Vacca
AFCA Member
 

Joined: Wed Feb 20th, 2019
Location:  
Status: 
Offline
Let me ask a follow up question. Is out of clock the blades at the wrong position on the shaft? Can it be as easy as repositioning the blade assembly and rotating it on the shaft? With the blades riveted to the center part they can't be repositioned can they?
Im sorry but each response is probably going to prompt a new question.
I will search and read up on this clock business.
Ray

Back To Top PMQuoteReply

 Posted: Fri Mar 15th, 2019 09:30 pm
  PMQuoteReply
9th Post
Steve Sherwood
AFCA Member


Joined: Mon Nov 14th, 2005
Location: Peculiar, Missouri USA
Status: 
Offline
You need to fiscally change the distance between the blades. Rotating them on the shaft does not change anything. They would still be out of clock until you change the gap between the blade(s) that out are of clock. Putting the blades back in clock is a PITA. It can be done, but I would look for another set of blades.

Back To Top PMQuoteReply  

 Posted: Sat Mar 16th, 2019 03:34 am
  PMQuoteReply
10th Post
Steve Stephens
AFCA Member


Joined: Mon Nov 14th, 2005
Location: San Anselmo, California USA
Status: 
Offline
When blades are out of clock each one or more individual wings of the blade are attached to a hub finger than has been bent causing the out of clock.   Bending the hub finger with wing back into the proper or original position is all it takes but it's not that simple because a bent hub finger can have also been bent fore or aft.

Back To Top PMQuoteReply

 Posted: Sat Mar 16th, 2019 02:24 pm
  PMQuoteReply
11th Post
George Durbin
AFCA Member


Joined: Fri Nov 2nd, 2012
Location:  
Status: 
Offline
Hi Ray!

You need to ask the whack master himself John McComas! You need something whacked, John is the consummate whacker for clocking blades! U might say he is a professional... 


Geo...

Back To Top PMQuoteReply  

 Posted: Sun Mar 17th, 2019 10:53 pm
  PMQuoteReply
12th Post
Mitch W. Romero
AFCA Member


Joined: Tue Jan 22nd, 2013
Location: New Iberia, Louisiana USA
Status: 
Offline
Nobody mentioned a dubro small airplane blade  balance tool cheap but you can get the weight in balance really well - my two cents

Back To Top PMQuoteReply

 Posted: Sun Mar 17th, 2019 11:29 pm
  PMQuoteReply
13th Post
Jim Kovar
AFCA Member


Joined: Mon Feb 21st, 2011
Location:  Lincoln, Nebraska USA
Status: 
Offline
:wondering:  Out of clock?   :wondering:




Thanks, everybody,  for
the explanation.   :shock:   :P



Back To Top PMQuoteReply  

Current time is 04:40 am  
AFCA Forums > Antique Fan Collectors Association > Pre-1950 (Antique) > out of clock Top



Beige Theme By: Di @ UltraBB
UltraBB 1.17 Copyright © 2007-2008 Data 1 Systems
Page processed in 0.1574 seconds (9% database + 91% PHP). 28 queries executed.