The Ford Barn

Steve in Tampa · 08-03-2018, 09:47 AM

I have a motor meter with no nut . I am trying to identify the threads, they are a fine version, maybe metric? It is 7/16 -----That is all I know. I have tried fine thread and does not match. I think this might be original or very early reproduction. thanks for the help , steve

Ruth · 08-03-2018, 09:52 AM

You have a couple of choices in 7/16. 7/16-14, 7/16-20, 7/16-28.

1955cj5 · 08-03-2018, 11:51 AM

This is a little old but you might give it a shot...

https://www.fordbarn.com/forum/showt...ight=motometer

He mentions 7/16-27 as the thread....

barnstuf · 08-03-2018, 01:55 PM

The nut for replacement motormeters is available thru major dealers.

The nut for original motormeters is not the same and is so hard to find that, as shown above, one party made up a small amount of them.

The moral of the story for most of us is do not buy an original motormeter unless it has the nut.

mleder · 08-03-2018, 06:33 PM

See if a friend has a thread pitch gauge, you can also use a tap or a thread file to match the thread and then you would know what pitch the thread.

loubob · 08-03-2018, 06:51 PM

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Is your motor meter original or a repro?

Terry, NJ · 08-03-2018, 07:35 PM

I suspect he was using a 1/8 STRAIGHT pipe thread. This is the thread of the threaded hollow rod that you find in electrical application, such as through a ceramic lamp. Try an electrical supply. Both the 1/8 NPT Tapered and straight thread are 27 pitch.
Terry

Quote:

Originally Posted by 1955cj5

This is a little old but you might give it a shot...

https://www.fordbarn.com/forum/showt...ight=motometer

He mentions 7/16-27 as the thread....

redmodelt · 08-04-2018, 12:23 AM

No he made them. I have the tap to do the same thing. But yes the nuts u suggested should work on original MM.

08-03-2018, 09:47 AM	#1
Steve in Tampa Member Join Date: Jun 2010 Posts: 95	Motor meter threads I have a motor meter with no nut . I am trying to identify the threads, they are a fine version, maybe metric? It is 7/16 -----That is all I know. I have tried fine thread and does not match. I think this might be original or very early reproduction. thanks for the help , steve

08-03-2018, 09:52 AM	#2
Ruth Senior Member Join Date: May 2016 Location: Glide, Oregon Posts: 1,339	Re: Motor meter threads You have a couple of choices in 7/16. 7/16-14, 7/16-20, 7/16-28.

08-03-2018, 11:51 AM	#3
1955cj5 Senior Member Join Date: Apr 2015 Location: Boise, Idaho Posts: 1,578	Re: Motor meter threads This is a little old but you might give it a shot... https://www.fordbarn.com/forum/showt...ight=motometer He mentions 7/16-27 as the thread.... __________________ Early '29 CCPU that had a 4-speed, but not any more.......in the family since '62

08-03-2018, 01:55 PM	#4
barnstuf Senior Member Join Date: May 2010 Location: Cape Cod MA Posts: 2,840	Re: Motor meter threads The nut for replacement motormeters is available thru major dealers. The nut for original motormeters is not the same and is so hard to find that, as shown above, one party made up a small amount of them. The moral of the story for most of us is do not buy an original motormeter unless it has the nut.

08-03-2018, 06:33 PM	#5
mleder Senior Member Join Date: May 2010 Posts: 179	Re: Motor meter threads See if a friend has a thread pitch gauge, you can also use a tap or a thread file to match the thread and then you would know what pitch the thread.

08-03-2018, 06:51 PM	#6
loubob Senior Member Join Date: Oct 2013 Location: Syracuse,NY Posts: 264	Re: Motor meter threads Sponsored Links (Register now to hide all advertisements) Is your motor meter original or a repro?

08-04-2018, 12:23 AM	#8
redmodelt Senior Member Join Date: May 2010 Location: Portland OR Posts: 6,340	Re: Motor meter threads No he made them. I have the tap to do the same thing. But yes the nuts u suggested should work on original MM. __________________ I know the voices aren't real but damn they have some good ideas!