Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 01-20-2019, 02:52 AM   #1
Wopcmh
Junior Member
 
Wopcmh's Avatar
 
Join Date: Jan 2019
Location: Mandurah
Posts: 2
Default Speedo goes backwards

Speedo only works in reverse
Hello any help much appreciated
I have a recently restored 1934 Ford Deluxe 5 Window Coupe and the speedo has never worked in forwards direction but does work in reverse.
I disconnected the cable from drive worm on top of the enclosed tail shaft and used a battery drill to spin the cable. The speedo works in the anti clockwise direction but that is when you are in reverse.
Do i have the incorrect speedo ?
Can I change the direction the cable spins?
Is it possible to change the direction of the drive gear on the tail shaft ?
Cheers Chris
Wopcmh is offline   Reply With Quote
Old 01-20-2019, 03:02 AM   #2
flatheadmurre
Senior Member
 
flatheadmurre's Avatar
 
Join Date: Apr 2015
Location: Sweden
Posts: 2,241
Default Re: Speedo goes backwards

If you have the turtle on the torquetube turned 180degree it goes the wrong way...if im not having a before coffe moment...

Last edited by flatheadmurre; 01-20-2019 at 04:39 AM. Reason: spelling...
flatheadmurre is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 01-20-2019, 03:46 AM   #3
Mart
Senior Member
 
Mart's Avatar
 
Join Date: May 2010
Location: Solihull, England.
Posts: 5,375
Default Re: Speedo goes backwards

No coffee required. Turning the speedo drive (turtle) on the torque tube 180 degrees will reverse the direction of rotation of the cable. In this case it will un-reverse the cable rotation.

Mart.
Mart is offline   Reply With Quote
Old 01-20-2019, 05:08 AM   #4
Wopcmh
Junior Member
 
Wopcmh's Avatar
 
Join Date: Jan 2019
Location: Mandurah
Posts: 2
Default Re: Speedo goes backwards

Thanks i will give it try
I had thought of that but the worm drive in the turtle is angled so I didn’t think it would mesh with the drive if i turned it 180.
I will take it off again and have another go. Keep you posted
Wopcmh is offline   Reply With Quote
Old 01-20-2019, 03:31 PM   #5
edhd58
Senior Member
 
edhd58's Avatar
 
Join Date: Jul 2014
Location: Guston,ky
Posts: 585
Default Re: Speedo goes backwards

the gear turned 180 simply puts the shaft output end on the other end, making the speedo cable turn the other direction. I did this same thing putting mine together.
edhd58 is offline   Reply With Quote
Old 01-20-2019, 06:57 PM   #6
Graham Freeman
Member
 
Join Date: May 2010
Posts: 82
Default Re: Speedo goes backwards

How does the speedo go in reverse? does it not have a stop pin at the zero mark? is this missing?
Graham Freeman is offline   Reply With Quote
Old 01-20-2019, 09:45 PM   #7
philipswanson
Senior Member
 
Join Date: Oct 2015
Posts: 576
Default Re: Speedo goes backwards

Maybe you put the body on the frame backwards.

Last edited by philipswanson; 01-20-2019 at 10:53 PM.
philipswanson is offline   Reply With Quote
Old 01-21-2019, 12:56 AM   #8
Anteek29
Senior Member
 
Anteek29's Avatar
 
Join Date: Dec 2014
Location: Santa Maria, CA
Posts: 516
Default Re: Speedo goes backwards

Quote:
Originally Posted by philipswanson View Post
Maybe you put the body on the frame backwards.

Now that's funny!
__________________
Alan
1929 Special Coupe
1941 Pick-Up
1955 Victoria
Anteek29 is offline   Reply With Quote
Old 01-21-2019, 05:45 AM   #9
flatheadmurre
Senior Member
 
flatheadmurre's Avatar
 
Join Date: Apr 2015
Location: Sweden
Posts: 2,241
Default Re: Speedo goes backwards

Quote:
Originally Posted by Graham Freeman View Post
How does the speedo go in reverse? does it not have a stop pin at the zero mark? is this missing?
Probably more like it shows forward movement while reversing...
flatheadmurre is offline   Reply With Quote
Old 01-21-2019, 04:28 PM   #10
1952henry
Senior Member
 
1952henry's Avatar
 
Join Date: May 2010
Location: North Dakota
Posts: 1,113
Default Re: Speedo goes backwards

Scratch the paint and see if it disappears. If it does, you have a special car. Just ask Arnie Cunningham. Oops, I guess that is not possible.
__________________
I dig coal.
1952henry is offline   Reply With Quote
Old 01-22-2019, 07:47 PM   #11
GB SISSON
Senior Member
 
GB SISSON's Avatar
 
Join Date: Jan 2014
Location: Orcas Island Washington
Posts: 2,041
Smile Re: Speedo goes backwards

I thought this was going to be the joke about the two European guys on the beach and the potato.....
__________________
'47 1/2 ton pickup next project, '47 one ton panel 99% stock nearing completion, '47 2 ton with 8ba and 9' script stakebed, '46 1/2 ton woodie project,'59 F350 9' flareside pickup with cummins 6at. 'Rusty ol' floorboards, hot on their feet' (Alan Jackson)
GB SISSON is offline   Reply With Quote
Old 01-23-2019, 12:58 AM   #12
Detonator
Senior Member
 
Detonator's Avatar
 
Join Date: May 2010
Location: Santa Cruz
Posts: 248
Default Re: Speedo goes backwards

No, the potato was the two lawyers wearing the Speedos..... just to bring it back around
__________________
Seabright Hot Rods
Detonator is offline   Reply With Quote
Old 01-24-2019, 07:02 PM   #13
grumppyoldman
Senior Member
 
grumppyoldman's Avatar
 
Join Date: Apr 2017
Location: Texas Gulf Coast
Posts: 452
Default Re: Speedo goes backwards

If the drive gear is a bevel cut gear, turning it 180 deg. will destroy the driven gear. They don't work so well like that. Maybe a straight cut gear would work, but not a bevel cut one. Al
grumppyoldman is offline   Reply With Quote
Old 01-25-2019, 03:39 AM   #14
Mart
Senior Member
 
Mart's Avatar
 
Join Date: May 2010
Location: Solihull, England.
Posts: 5,375
Default Re: Speedo goes backwards

Grumps, that's not right. 90 degrees, yes, 180 degrees, no.

The turtle can only be rotated 180 degrees so it is ok to do so. In fact, it is already working 180 degrees from the correct position, hence the speedo only registering when the car is going in reverse.

Mart.
Mart is offline   Reply With Quote
Old 01-25-2019, 04:16 AM   #15
Dodge
Senior Member
 
Join Date: Nov 2011
Posts: 1,060
Default Re: Speedo goes backwards

Maybe it’s like the old Australian saying the toilets flush the other direction.....
Dodge is offline   Reply With Quote
Old 01-25-2019, 04:33 AM   #16
flatheadmurre
Senior Member
 
flatheadmurre's Avatar
 
Join Date: Apr 2015
Location: Sweden
Posts: 2,241
Default Re: Speedo goes backwards

So all australian speedos work anti clockwise then...just to be in sync with the flushing...
flatheadmurre is offline   Reply With Quote
Old 01-26-2019, 12:44 AM   #17
cas3
Senior Member
 
Join Date: Jan 2011
Location: sw minnesota
Posts: 1,436
Default Re: Speedo goes backwards

if you are down under, which way is up?
cas3 is offline   Reply With Quote
Old 01-26-2019, 01:10 AM   #18
ford38v8
Senior Member
 
ford38v8's Avatar
 
Join Date: Jul 2011
Location: SF Bay Area
Posts: 4,829
Default Re: Speedo goes backwards

Quote:
Originally Posted by cas3 View Post
if you are down under, which way is up?
Be sure to ask the next Aussie you see wearing his speedo backwards. you may then liven up the conversation with your observation of which direction the water swirls in an Aussie toilet.
__________________
Alan
ford38v8 is offline   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

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 03:37 PM.