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pre61-list Digest Tue, 06 Mar 2001 Volume: 2001  Issue: 051

In This Issue:
Re: Speedo
Steering Wheel - Gages
Re: Speedo gears
Re: Speedo
9 Inch Ford Rear
Re: Withdrawal (want a 70's F-350 or 48 F-4)
Re: 9 Inch Ford Rear
Re: Withdrawal (want a 70's F-350 or 48 F-4)

----------------------------------------------------------------------

From: "GaryBBB" <gpeters3 lni.net>
Subject: Re: Speedo
Date: Tue, 6 Mar 2001 19:54:58 -0800


We'd have to know the actual current tire size and original gear ratio and
tire size to calculate this.

--
Happily Retired (but broke)
Michigan Pot Hole Jumping,
78 Bronco Loving, Gary
--

> Got the '50 on the road today. Paid a lot of money for the privilege of
> driving in the state of Illinois. Paid less for antique insurance from
> Hagerty than the GOV took for himself. But, my question is about the
> speedo. I have a 3 speed on the floor, 3.73 rear gear, and 15" tires. How
> do I figure out what gear to put in the speedo drive to work out right. I
> believe that it now has a stock gear, and the speedo seems to be reading
> high.
>
> Thanks,
>
> Randy


------------------------------

From: bellx2 erols.com
Subject: Steering Wheel - Gages
Date: Tue, 6 Mar 2001 20:06:03 -0500

Been considering a restoration of my steering wheel and update of gages.   WHEW! $$$$

Steering wheel:  "Gary" of Carlisle fame gave me the bad news; my wheel's so far shot (many cracks, gouges, and chunk-outs) that he doesn't want his name associated with it.  Anybody got a F-1 wheel in restorable shape or a recommended source?

Gages:  I'm already running 12V and prefer to keep the original gage faces with rebuilt/new movements.  I've called most all the Hemmings advertisers, and several from national magazines.  Big bucks and big wait times.  Can fellow FTE'ers recommended a restoration/upgrade shop that's in the ball park of an ordinary guy?

I sure don't want to do the PF main-street cruise steering with a breaker bar and a hole in the dash board!

RAY


------------------------------

From: BOBWOOD536 aol.com
Date: Wed, 7 Mar 2001 06:43:32 EST
Subject: Re: Speedo gears

Randy,
Getting the correct gear for your tranny might not be too easy, you know
because of the age.
I know Oblselete Ford Parts Inc. in Oklahoma used to doing all the figuring
for you. All you have to supply is the gear ratio and tire size, "they want
everything not just rim size". As far as I know standard speedo's are set for
1,000 rpm at 60 mph, no matter what manufacture. There is a formula you can
use to figure out what your rpm's are for a given speed, so if you have a
tach on the truck you can use it find out how far off your speedo is. If you
want let me know off bulliten and I will dig it up.
Bob Wood
60 F100
302/C6 (it'll run someday)
bobwood536 aol.com



------------------------------

Date: Wed, 07 Mar 2001 09:57:03 -0500
From: 47Fred <zelda_1 prodigy.net>
Subject: Re: Speedo




> > H But, my question is about the
> > speedo. I have a 3 speed on the floor, 3.73 rear gear, and 15" tires. How
> > do I figure out what gear to put in the speedo drive to work out right. I
> > believe that it now has a stock gear, and the speedo seems to be reading
> > high.
>
For what it's worth, here is a little gem I found 'way in the back of
my "sent" mail folder.


For those that  wondered,  there is a logic to the metric tire system,
even if they refuse to use the King's foot for some bizarre reason.
Accuracy is hoped for, but I could have screwed up.

 Example: 265-60R-15 how big (tall) is it? The "265" is the tread width
in millimeters, or 10.43 inches, as nature intended. (265/25.4). You
will
have a better chance of seeing God than measuring this, factors like
tire pressure, wheel width and so on effect it. It's kind of like a 2 X
4, you have to believe.

 The "60R" indicates it is a 60 series radial, with the side wall
height being 60% of the tread width. ( 70 is 70%, and so on). So for my
example, the tire sidewall is (265 X .60)= 159 mm, 6.25inches.

 The "15" is the wheel size in inches. WOW!! millimeters and inches in
the same place, how so? Probably because you can't GIVE away a 390 MM
tire, certainly Ford tried.
  So to continue, two sidewalls, top and bottom, plus the wheel
diameter, gives the height. (6.25 + 6.25 + 15)=27.5". Ok, so the tire
looks squished, doesn't count in the height calculation, that's why they
call them "radials".

   How much will this screw up your speedometer? Heck if I know, the
tire will roll its height times 3.14 each revolution. (27.5 X
3.14)=86.35"/rev. It will roll over 733.8 times per mile. (5280'/
(86.35"/12")). Multiplied by the rear gear ratio, you can get your
engine speed
for any particular time period. ((733.8 X ratio)/(time per mile in
minutes). (Assumes 1:1 in the transmission)

  For example with a 3.50 ratio, and 0.5 min/mile (120 mph):
(733 X 3.50)/(0.5min/mile)= 5130RPM.

  If you know your present tire size, the ratio of the diameters will
give you a change factor. Say your old 7:50/16's were 32" (and I don't
know that they were) tall. Then (32/27.5)=1.160. If your speedo was dead
on (unlikely) at 55 before, you are in no danger of a ticket now at
47.3mph (55/1.16). But if they were 24.5" tall, then (24.5/27.5)=.890
and (55/.890)=61.7.

  The speedometer gear in the transmission is driven by a spline type
gear on the main output shaft, and is not really subject to change. It
usually has 6 or 7 teeth. The output gear, that attaches to the cable
can have a number of possible tooth counts. One upon a time, I connected
a dwell/tach meter to my ignition, and ran the motor, with BOTH wheels
jacked up to find the indicated speed at a variety of RPM's.  I then
calculated the correct speed with my tire/ratio combination, and
compared that to the actual indicated by the tach and speedometer. After
that it was a simple matter to hunt through my collection of speedometer
gears (never throw anything away) and to find a close match. This method
works best with a manual transmission, but is close with an automatic as
slip is prety minimal with no load. (PS: make sure the brakes work, as a
wheel spinning at 60 MPH has a lot of force, and won't really coast to a
quick stop.)

47 Fred

------------------------------

Date: Wed, 07 Mar 2001 10:39:39 -0500
From: Glen <53effie home.com>
Subject: 9 Inch Ford Rear


Hi Gang,

A while ago I came across a web page which detailed the many different
Ford models that came with a 9" rear end along with the width of the
rear end. Does anybody happen to know where I might find this page? Does
anybody know of any pages that would help to identify a 9" rear end
given the length of the housing?

Take care.

Glen Mead - 53effie home.com
---
Freelance Animator and
Digital Content Creator
---
2D & 3D Animation • Web Sites • CD-Roms • PowerPoint

------------------------------

Date: Wed, 07 Mar 2001 15:28:46 -0500
From: Francis Marchand <fmarchand draper.com>
Subject: Re: Withdrawal (want a 70's F-350 or 48 F-4)


Gary,

Since I have a '52 F-4 (DRW), dump truck, I think 3 tons of stone would be
pushing it a bit.  The F-4 has a 10,000 lb. GVW rating in dual rear wheel
form.  (They also came in SRW, 7,500 GVW form.)  They are tire limited, as
well as spring limited.  If you don't mount the body on a newer chassis,
get yourself an F-5 or F-6.  They can be rated for over 14,000 lbs. GVW due
to their 20 inch tires and aux rear springs.  My F-4 has 18 inch tires (try
finding replacements for those!) and also the F-5 type aux rear springs.
(The five bolt, 8 inch bolt circle wheels are next to impossible to find
replacements for on these trucks.  Search this site for my posting on F-4
wheels.)  Of course the higher the load rating, the lower the rear end
ratio (read that slooower vehicle speed).  The F-4 starts at 5.1 to 1 the
F-6 goes up to 8 to 1, both certainly are not speedsters!!

Have fun!

Fran

>From: "GaryBBB" <gpeters3 lni.net>
>Subject: Re: Withdrawal
>Date: Mon, 5 Mar 2001 07:55:42 -0800
>
>
>And the main reason I want a 70's F-350 or 48 F-4.  I hate driving 35 mph
>with 2 tons of stone in the back...........:-(  I'd like to drive 70 with 3
>tons of stone in the back :-)  One thing about having a stone driveway, you
>will always need a truck to haul some stone to keep it up :-)  I would
>dearly love to have a 48, 4x4 in the heavier size like the F-4 or even an
>F-3 but 4x4's in the older trucks are very rare out there so I may have to
>find a good deal on a 48 with a decent body and stick in on a newer chassis
>or add the 4x4 to it.  I simply like the 48 body style and grill.  I
>actually like the 40 grill better but I believe in being practical :-)  48's
>are fairly common yet and popular enough to get parts for :-)
>
>--
>Happily Retired (but broke)
>Michigan Pot Hole Jumping,
>78 Bronco Loving, Gary
>--


------------------------------

From: "Kenneth Marty" <kdmarty mindspring.com>
Subject: Re: 9 Inch Ford Rear
Date: Wed, 7 Mar 2001 16:25:48 -0700



Glen try these  http://www.ford-trucks.com//lc/lc.php?action=do&link=http://hiqties.hypermart.net/9inch.html
http://www.ford-trucks.com//lc/lc.php?action=do&link=http://dfwmotorsport.com/Fairlane/9inchrearends.htm
hope this helps.

Kenneth 55 F100 Denver CO  http://www.ford-trucks.com//lc/lc.php?action=do&link=http://kdmarty.home.mindspring.com

> Hi Gang,
>
> A while ago I came across a web page which detailed the many different
> Ford models that came with a 9" rear end along with the width of the
> rear end. Does anybody happen to know where I might find this page? Does
> anybody know of any pages that would help to identify a 9" rear end
> given the length of the housing?
>
> Take care.
>
> Glen Mead - 53effie home.com
> ---
> Freelance Animator and
> Digital Content Creator
> ---
> 2D & 3D Animation . Web Sites . CD-Roms . PowerPoint
> =============================================================
> To  unsubscribe:   www.ford-trucks.com/mailinglist.html#item3
> Please remove this footer when replying.
>



------------------------------

From: "GaryBBB" <gpeters3 lni.net>
Subject: Re: Withdrawal (want a 70's F-350 or 48 F-4)
Date: Wed, 7 Mar 2001 21:26:27 -0800


Well, I appreciate your response.  I assumed the F-4 was heavier duty than
the F-350.  I had a F-600, 62 vintage once and I swear it could haul 10
tons.  I loaded it with logs, well over the cab, 16' long and it hardly
fazed the springs :-)  It was an old Driggs Dairy truck so may have had a
tank on it at some point, not sure.  I just get so tired of having to get
out and watch the tires as they dump the stone in so they don't pop :-(  I
know an f-350 would easily haul 6000 pounds of stone so may just keep
looking for a 78 but I like the body style of the 48's.

I've been seeing a 78, F-350 dump, 4x4 in the papers lately but don't have
the cash for something in that good a shape.  I'm just going to be patient,
get rid of some of my trucks, bank the money and keep my eyes open.  The
right truck will come along one day.  If I haven't learned anything else in
this life I have learned not to jump on the first thing that comes along :-)
(Still not very patient though :-))

--
Happily Retired (but broke)
Michigan Pot Hole Jumping,
78 Bronco Loving, Gary
--

> Gary,
>
> Since I have a '52 F-4 (DRW), dump truck, I think 3 tons of stone would be
> pushing it a bit.  The F-4 has a 10,000 lb. GVW rating in dual rear wheel
> form.  (They also came in SRW, 7,500 GVW form.)  They are tire limited, as
> well as spring limited.


------------------------------

End of pre61-list Digest V2001 #51
**********************************
--------------------------------------------------------------------
Ford Truck Enthusiasts  offers books to help you restore your truck:

-Ford Truck Parts Locating Guide
-1948-1960 Ford truck shop manuals (printed and on CD-ROM)
-1948-1960 Owners manuals
-How to Restore Metal Auto Trim
-1944-1952 Body Parts Catalog
-The Complete Ford Flathead V8 Engine Manual
-Plus Hundreds of decals!

<a href="http://www.motorhaven.com/">
http://www.motorhaven.com/</a>
------------------------------------------------------------------- ....

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