Tachometer Help

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Mar 27, 2011 | 04:55 PM

#21

MiguelsC2

Le Mans Master

Joined: Aug 2009

Posts: 5,474

Likes: 16

From: Houston Texas

St. Jude Donor '10-'12-'13

Quote:

Originally Posted by JohnZ

Yes, it does. 1000 rpm = 60 mph is the standard calibration for GM speedometers.

John, sorry for the temp hijacking of this thread.

You posted a link on the NCRS site regarding overheating. That link in your post has a virus. A bad one. As soon as I clicked the link. My anti virus software went off like crazy.. I couldnt log onto the NCRS site right away (Forgot my password).. So I thought I would get you here.

You may want to pull that link and investigate your computer. My anti virus software caught it.

If anyone gets a flag? Do a forced shutdown imediately.

DO NOT CLICK OR EXIT ANY BOXES.

FORCED SHUTDOWN ONLY.

Mar 27, 2011 | 05:21 PM

#22

x0000rgw

Racer

Joined: Mar 2006

Posts: 448

Likes: 6

From: ALLEN Texas

Generator Tach?

Quote:

Originally Posted by 64vert

Ray,

I replaced my bushing as you describe and the chatter is gone, at least while I am turning it with my drill. I still need to calibrate it, my drill speed is supposed to be 1200 RPM which would mean my tach needs to show 2400. I can't adjust it to get it that high, my next step is to verify that my drill is actually turning 1200, we have some industrial tachometers at work that I can use to do that.

Thanks,
Brian

Make sure that this is Not a generator drive tach. Generator
drive tachs show cable speed. 1200 RPM shows 1200 RPM on
the tach.

Ray

Mar 27, 2011 | 05:33 PM

#23

62Jeff

Tech Contributor

Joined: May 2005

Posts: 15,574

Likes: 118

From: Conroe Texas

Quote:

Originally Posted by x0000rgw

Make sure that this is Not a generator drive tach. Generator
drive tachs show cable speed. 1200 RPM shows 1200 RPM on
the tach.

Ray

No generator tachs after 61, his appears to be a 64.

Mar 27, 2011 | 06:19 PM

#24

64vert

Thread Starter

Instructor

Joined: Nov 2004

Posts: 161

Likes: 4

From: Maryville TN

Quote:

Originally Posted by 62Jeff

No generator tachs after 61, his appears to be a 64.

I sold the 64, this is a 65 coupe, I guess I need to change my name

Mar 28, 2011 | 10:30 AM

#25

x0000rgw

Racer

Joined: Mar 2006

Posts: 448

Likes: 6

From: ALLEN Texas

Swap meet tach

Quote:

Originally Posted by 62Jeff

No generator tachs after 61, his appears to be a 64.

People buy old tachs at swap meets and don't know what
they are buying. A distributor tach is usually stamped on the
outside (tach shows twice cable speed). I have not seen
a generator drive tach that was stamped. However, I have
not seen that many.

Ray

Apr 1, 2011 | 05:21 PM

#26

MiguelsC2

Le Mans Master

Joined: Aug 2009

Posts: 5,474

Likes: 16

From: Houston Texas

St. Jude Donor '10-'12-'13

Quote:

Originally Posted by 1sttexan

If anyone gets a flag? Do a forced shutdown imediately.

DO NOT CLICK OR EXIT ANY BOXES.

FORCED SHUTDOWN ONLY.

Here is the cause of what I described above.

http://newenterprise.allthingsd.com/...mod=googlenews

Sorry for the hijack. It's important info.

Apr 2, 2011 | 01:12 PM

#27

JohnZ

Team Owner

Joined: Oct 2000

Posts: 38,897

Likes: 1,920

From: Washington Michigan

Quote:

Originally Posted by 1sttexan

Here is the cause of what I described above.

http://newenterprise.allthingsd.com/...mod=googlenews

Sorry for the hijack. It's important info.

I use the site I linked to in my post on the NCRS board every day (as do many others), and have never experienced what you did; the link you posted says it's not a Microsoft vulnerabililty, but it's a third-party program vulnerability - nobody else has reported it.

Apr 3, 2011 | 10:33 AM

#28

64vert

Thread Starter

Instructor

Joined: Nov 2004

Posts: 161

Likes: 4

From: Maryville TN

Quote:

Originally Posted by 64vert

Just as a heads up for anyone else doing this, I just verified my drill speed with a digital tachometer. For my particular drill (Porter Cable 18V), the max rotation is lower when rotating in the counterclockwise direction, which is the way the cable needs to rotate in this case. It is around 1050 instead of 1200, so I was able to get the tach calibrated ok. I replaced the worm gear in the speedo and got it to read correctly also.

I'm not sure if all drills are like this but it is worth checking out.

Thanks for the help,
Brian