[Tigers] Speed Driven Gear Questions have...

[Tom Parker]

Ron is right re the Mark 2 speedometer. On the face, to the right of the
speedometer s/n in really small type is "1020."

Tom
'67 Mark 2


On Tue, Dec 6, 2016 at 1:33 PM, Larry Mayfield via Tigers <
tigers at autox.team.net> wrote:

>
> Hello, Thanks for the info and reply!
>
> I went to David Kee top loader pages and found this:
> A black drive gear with 7 teeth pn C4DZ-17285A  NOT for Tiger
> A  pink gear with 6 Teeth pn C5ZZ-17285A  NOT for tiger
> A Yellow gear with  7 Teeth  pn DK296-YSG  FOR Tiger
> A Brown gear with 8 teeth  pn DK286-BSG FOT Tiger
> There are no 6T drive gears for the top loader, at least available anyway.
> With the plethora of driven gears and a pair of drive gears and knowing
> the dire diameter for the revolutions per mile calculation then one should
> be able to come pretty dang close to reality I think.  That 8=980 revs per
> mile is a high number due to the dinky OEM tire size sold with the cars. I
> think the overall diameter of the Dunlop 5.90 tires was 20.5 inches which
> would be about right for the 980 res per mile. Tires today are larger and a
> 205 x 15 is 23 inches or so in diameter and that results in a lower of revs
> per mile to run the speedo. So, the drive and driven gears need to be
> selected  to get that tire back to a pseudo 980 revs per mile.  And the
> rear gear needs to be added in as well if it has been changed. Not a
> terrifically involved process but stuff has to be accounted for in order to
> get a good reading speedo. Final fiddling can be achieved internally to the
> speedo although I have never ever tried that.
>
> Or purchase a GPS unit, lol. Plug and play....  add power, turn on....
>
> mayf
>
> -----Original Message-----
> From: e.coiner at cox.net [mailto:e.coiner at cox.net]
> Sent: Tuesday, December 6, 2016 6:09 AM
> To: Larry Mayfield <drmayf at mayfco.com>
> Cc: Larry Mayfield via Tigers <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> 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
> >
> >
> >
> > _________________________
> > drmayf
> > Worlds Fastest Sunbeam, period.
> > 204.913 mph flying mile
> > 210.779 mph exit (not top)  speed
> >
> >
> >
>
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