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Mechanical tach setup?
Posted: Sun Dec 08, 2024 10:35 pm
by Eric Edwards
Has anyone put a mechanical tach( Stewart Warner or ? On a cable drive off the generator? What do we do to get the ratio of rpm correct? Any thoughts. ? Thanks. any ideas welcome. Eric
Re: Mechanical tach setup?
Posted: Sun Dec 08, 2024 10:55 pm
by Dodge
1955-1959 Corvette
Re: Mechanical tach setup?
Posted: Sun Dec 08, 2024 11:16 pm
by Craig Leach
Hi Eric,
They are not very common anymore but S.S. White & Stewart Warner used to sell speedometer calibration gear boxes that did just that. They
can be made to almost any ratio & can be placed on the drive or inline of the cable. I used one to calibrate a Stewart Warner speedo in a sports
car I built in 1998 that used VW center of wheel cable drive. It would have to slow it down 33.3%?? for a T using the generator to drive it as that
is driven @ 150% of crank speed.
Craig.
Re: Mechanical tach setup?
Posted: Mon Dec 09, 2024 12:39 am
by Eric Edwards
That’s what i wanted to know. You are astute
Thank you so much. I saw a car in Michigan that ran a drive off the back of the generator but just didn’t know the reduction ratio or what to do. You’ve answered what i was needing to know. Thanks so much. Brilliant. Thanks Eric
Re: Mechanical tach setup?
Posted: Mon Dec 09, 2024 12:47 am
by Eric Edwards
That’s what i wanted to know. You are astute
Thank you so much. I saw a car in Michigan that ran a drive off the back of the generator but just didn’t know the reduction ratio or what to do. You’ve answered what i was needing to know. Thanks so much. Brilliant. Thanks Eric