Timing cover Tachometer drive ratio

P

pierodn

Joined

Nov 10, 2012

Messages

3,154

• Dec 29, 2016

• #1

Hi.
My Smiths Tachometer Drive fitted on the timing cover has 1:1 ratio.
Is it the correct ratio?.
Thank you.
Piero

 

CanukNortonNut

Joined

Aug 8, 2005

Messages

2,835

• Dec 31, 2016

• #2

Yes.
And this will match up with a RMS 3003/00 Tachometer.
Cheers,
Thomas

 

P

pierodn

Joined

Nov 10, 2012

Messages

3,154

• Jan 1, 2017

• #3

CanukNortonNut said:

Yes.
And this will match up with a RMS 3003/00 Tachometer.
Cheers,
Thomas

Click to expand...

Hi Thomas,
thank you.
RMS 3003/00 is the only that matchs with?
Piero

 

Ron L

VIP MEMBER

Joined

Feb 27, 2004

Messages

3,240

• Jan 1, 2017

• #4

RSM3003/00 is the correct gauge, but any Smiths gauge with a 2:1 ration and clockwise rotation will work. The Smiths book lists RSM3002/00, RSM3003/15, RSM3004/00 as 2:1 clockwise.