Reply
 
Thread Tools Search this Thread
 
Old 21 March 2005, 08:43   #1
Member
 
Country: USA
Town: Torrance
Length: no boat
Join Date: Jun 2004
Posts: 332
Switched Tachos

I ve got a tachometer which is switchable between 4 6 8 cylinders but not 2

I assume it is switched used resistors? Is it therefore possible to insert another one to reduce it to 2 cylinders?

If so anyone any idea of how to wire it an what Ohms etc?

Its a Durite tacho.

PW
__________________

__________________
SDGANDER is offline   Reply With Quote
Old 21 March 2005, 09:40   #2
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
I doubt it's a resistor. The tacho will be counting pulses.

You could always adjust it to 4cyl and then half it...
__________________

__________________
JW.
jwalker is offline   Reply With Quote
Old 21 March 2005, 09:42   #3
Member
 
Country: UK - England
Town: Colne
Make: Driver 440
Length: 4m +
Engine: Outboard 70HP
Join Date: Mar 2005
Posts: 12
Personally I don't think it's such a great idea using a automotive tacho on an outboard. I seem to think "Durite" is for cars etc. If I could see the pc board layout I could tell you what to do. I think you may be trying the wrong thing here as a tacho should be accurate otherwise it's pretty pointless. I don't think outboard ignitions system are the same as auto's when it comes to the way a tacho is set up. I could be wrong though.
__________________
Wile E Coyote is offline   Reply With Quote
Old 21 March 2005, 10:11   #4
Member
 
Country: USA
Town: Torrance
Length: no boat
Join Date: Jun 2004
Posts: 332
Guess it was counting pulse too - assummed that the switch then used some form of logic to give the correct read out.. electronic method of halving the reading on 4!

Not sure whats inside as seem unable to open the case without damage.

SDG
__________________
SDGANDER is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 04:24.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.