skydvr
Plastic
- Joined
- Sep 15, 2005
- Location
- Thomasville,NC
Can I replace the 4,000 RPM tach with a 2500RPM tach, or are the drive gears different on the spindle?
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Tachometer
- Thread starter skydvr
- Start date
- Replies 6
- Views 832
rimcanyon
Diamond
- Joined
- Sep 28, 2002
- Location
- Salinas, CA USA
There is no difference in the drive gears. You should change motor and spindle pulleys however - otherwise you could easily over rev the 2500 rpm tach.
-Dave
-Dave
peterh5322
Diamond
- Joined
- Dec 15, 2002
- Location
- Monterey Bay, California
IIRC, the tachs are the same, except for the dial indicia.
Calibration is effected at a spedometer shop, if necessary.
Calibration is effected at a spedometer shop, if necessary.
rimcanyon
Diamond
- Joined
- Sep 28, 2002
- Location
- Salinas, CA USA
Possibly we are talking about different models of tachs?
The 4000 rpm tach indicates 4000 rpm at the same point on the clock face that the 2500 rpm tach indicates 2500. I've had both tachs apart and they use different parts (1940 4000 rpm and 1942 2500 rpm).
Dave
The 4000 rpm tach indicates 4000 rpm at the same point on the clock face that the 2500 rpm tach indicates 2500. I've had both tachs apart and they use different parts (1940 4000 rpm and 1942 2500 rpm).
Dave
skydvr
Plastic
- Joined
- Sep 15, 2005
- Location
- Thomasville,NC
Thanks for the help. Now if I can find a 2500 tach instead of my 4000. I've installed a VFD and changed the pulley size already. I'll program it for a max of 2500 rpm. I also need three of the little brass plugs that screw into the oil fill holes and one of the little knurled washers and screws that are used for the gib adjusting screws. I have only used one of these 10EE's a couple of times, at least 15 years ago and never forgot it. It runs sooooo smooth. I'd like to say thanks to everyone who posts on here, you've been a lot of help while I get this thing up and running.
The Doctor
Cast Iron
- Joined
- Nov 9, 2003
- Location
- Lumberton, New Jersey USA
http://www.practicalmachinist.com/ubb/ultimatebb.php?ubb=get_topic;f=2;t=001124
I believe that is the post you're looking for. But why install a 2500 rpm tach? 4000 rpm is one of the benefits of these machines, I would never give that up unless it was being put into some kind of production environment where maximum horsepower at a certain speed was more important than overall versatility. Still, you know what you want.
Ed
I believe that is the post you're looking for. But why install a 2500 rpm tach? 4000 rpm is one of the benefits of these machines, I would never give that up unless it was being put into some kind of production environment where maximum horsepower at a certain speed was more important than overall versatility. Still, you know what you want.
Ed