tachometer - SailNet Community
 
LinkBack Thread Tools
post #1 of 5 Old 02-22-2008 Thread Starter
Member
 
Join Date: May 2007
Posts: 70
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
tachometer

Hello all,
Has or does anyone use an alternator tachometer. Where the pickup/sending unit is attached (I've heard tapped) into the alternator.

If so have you found it relatively user friendly? Brand? Longevity etc?
bristol321 is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 5 Old 02-22-2008
Senior Member
 
artbyjody's Avatar
 
Join Date: Jan 2008
Location: Bellingham, PNW
Posts: 3,146
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 12
       
Quote:
Originally Posted by bristol321 View Post
Hello all,
Has or does anyone use an alternator tachometer. Where the pickup/sending unit is attached (I've heard tapped) into the alternator.

If so have you found it relatively user friendly? Brand? Longevity etc?
If you have the documentation for your motor it is usually described in the schematics diagrams...Fairly easy to do and the typical off-the shelf parts will do the trick...

-- Jody

S/V "
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
" -
1983, Barberis Show 38! or
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.







artbyjody is offline  
Quote Quick Reply Share with Facebook
post #3 of 5 Old 02-22-2008
Senior Member
 
Maine Sail's Avatar
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 6,229
Thanks: 20
Thanked 286 Times in 219 Posts
Rep Power: 17
       
Most diesels..

Most diesel engines pull the sense off the tach. You'll need to get the right tach for use with your particular alternator. Usually a quick call to the engine manufacturer will send you in the right tachometer direction. The actual act of calibration may be the tough part unless you own a photo electric tachometer. You can pick up a photo electric tach from Eastwood for about $90.00. Although it is possible you that may find one elsewhere cheaper I trust and purchased mine there because they are a great company to deal with.

Photo Electric Tachometer

______
-Maine Sail / CS-36T


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.




Images In Posts Property of Compass Marine Inc.


Maine Sail is offline  
Quote Quick Reply Share with Facebook
post #4 of 5 Old 02-23-2008
Arf!
 
pegasus1457's Avatar
 
Join Date: Apr 2002
Location: Long Island NY
Posts: 609
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 15
 
Photo tachometer -- I found one on ebay for $27 (shipping included). It is a Chinese import (what isn't), but seems to work. Can't test it on the boat diesel yet. It is still winterized and on the hard.

Fluctuat nec mergitur
pegasus1457 is offline  
Quote Quick Reply Share with Facebook
post #5 of 5 Old 02-23-2008
Senior Member
 
Valiente's Avatar
 
Join Date: Jun 2006
Location: Toronto
Posts: 5,491
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 11
   
One advantage of the alternator tach I discovered the hard way. I have a freshwater cooled diesel and the alternator and the freshwater pump are run off the same belt. When going back and forth from the pump out dock, I noticed the tach reading flipping around a bit. Then it seemed to stick. Then I noticed the engine temp was 230 F.

Yes, I replaced the belt that had split longitudinally and wasn't turning the freshwater pump much. Now I know that if the tach wobbles...check the damn belt!
Valiente is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Sticky Tachometer maboyer Gear & Maintenance 2 11-20-2007 11:22 AM
Sticky Tachometer maboyer S2 3 11-20-2007 07:52 AM
Tachometer Calibration voyagersail Gear & Maintenance 3 03-22-2007 08:29 PM
Tachometer not working?? bderosa Gear & Maintenance 4 08-02-2006 08:08 PM
diesel tachometer diesel MHRitter Gear & Maintenance 1 09-17-2002 11:52 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome