[Tigers] FW: Speed Driven Gear Questions have...

[Ron Fraser]

David 

                Thanks again for the pictures.

 

I did find a picture on line for a B7C-17285-A1 with a D0TZ-A notation 6T and it was green.

 

It would be nice for anyone working on their transmission, Mk I and Mk II, to take a picture of this gear to verify all of this.

 

Ron Fraser

 

From: D or G at sbc [mailto:orr4sale at sbcglobal.net] 
Sent: Wednesday, December 07, 2016 11:53 AM
To: Ron Fraser <rfraser at bluefrog.com>; tigers at autox.team.net
Subject: Re: [Tigers] FW: Speed Driven Gear Questions have...

 

I thought I remembered buying the Tiger speedometer gears a long time ago so I went through my parts and found them, thought the list might be interested in pictures, and the info. I have written down for them, don't remember where I got the info.

 

Speedo Driving Gear Wheel Gear (on trans.)

MKI Rootes 6100261 / Ford B7C-17285-A replaced by D0TZ-17285-A (6 teeth)

MKII Rootes 6100710 / Ford C2OZ-17285-D replaced by C3OZ-17285-C (7 teeth)

---

Speedo Driving Pinion (on speedo cable)

MKI Rootes 6100504 15 teeth C3OA-17271-A replaced by C0DD-17271-A replaced by C0DZ-17271-A (16T) 

MKII Rootes 6100703 17 teeth C3DZ-17271-B

 

I have most of these numbers (pictures attached below). 

The D0TZ-17285-A (6 teeth) is missing from my box, I don't remember using it, but I believe it was green nylon. The C3OZ-17285-C is steel (7 teeth).

The C0DD-17271-A replaced by C0DZ-17271-A (16T) are odd in that both gears are wine colored and marked 16T the gear shape is a little different. The MKII gear is marked 6  17R, the dark highlight was done by Ford, not me, guess to make it easier to read, the other colored gears are not highlighted and are hard to read, don't know why they didn't highlight them with white.

My notes state add 5 MPH for each tooth. 15T 16T 17T

 

David Franchi

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


Forgot to add Tiger List again
My bad
Ron

-----Original Message-----
From: Ron Fraser [mailto:rfraser at bluefrog.com <mailto:rfraser at bluefrog.com> ] 
Sent: Tuesday, December 06, 2016 12:33 PM
To: 'e.coiner at cox.net <mailto:e.coiner at cox.net> ' <e.coiner at cox.net <mailto:e.coiner at cox.net> >; 'Larry Mayfield'
<drmayf at mayfco.com <mailto:drmayf at mayfco.com> >
Subject: RE: [Tigers] Speed Driven Gear Questions have...

The Part List indicates B7C-17285-A - 6T for the Mk I with a 15T
C3OA-17271-A gear on the speedo cable which turns a 980 revs / mile
speedometer

I have no Ford part # for the Mk II - the cable gear is listed as 17T which
leds me to believe the tail shaft gear is a 7T gear and I believe the Mk II
has a 1020 revs/ mile speedometer.

What we really need is someone to document exactly what is used in the Mk I
and Mk II Transmission with pictures.

I know the Alpine has other revs/ mile speedometers but I'm not sure if the
Tiger has any others.

General and Repair information about Smiths speedometers - search for
Anthony Rhodes article - Repairing Jaeger & Smiths Speedometers Odometer
gears can be purchased @ OdometerGears.com

Ron Fraser

-----Original Message-----
From: Tigers [mailto:tigers-bounces at autox.team.net <mailto:tigers-bounces at autox.team.net> ] On Behalf Of e.coiner---
via Tigers
Sent: Tuesday, December 06, 2016 9:09 AM
To: Larry Mayfield <drmayf at mayfco.com <mailto:drmayf at mayfco.com> >
Cc: Larry Mayfield via Tigers <tigers at autox.team.net <mailto:tigers at autox.team.net> >
Subject: Re: [Tigers] Speed Driven Gear Questions have...

I believe the Tiger is 6 teeth. 7 is the other common size.
Other useful info is the Tiger speedo takes 980 revolutions to rack up 1
mile on the odometer. Its printed on the face of the speedo in a really
small font.
---- Larry Mayfield via Tigers <tigers at autox.team.net <mailto:tigers at autox.team.net> > wrote: 
> 
> 
> sparked one from me. What is the number of teeth on the drive gear itself?
> The one that is on the actual output shaft of the transmission?  I 
> suspect there can be a couple of them that could be used.  With that 
> gear count and the driven gears available it becomes fairly easy to 
> determine which speedo cable driven gear is best for the car 
> parameters, like tire size, final drive rations etc.
> 
> mayf

 

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