Printable Version | Subscribe | Add to Favourites
New Topic New Poll New Reply
Author: Subject: RVC tacho problems
oldmansteptoe

posted on 7/9/15 at 07:24 PM Reply With Quote
RVC tacho problems

Hello

I have a Smiths RVC 2415/00AF, 4 cylinder, negative earth tacho in my locust, with 1700 xflow. Ive got a 103 fxys aldon leccy dizzy. Wiring this up seems like it should be easy, bullet connector to negative side of coil, and spade connector to a positive from the ignition, plus earth from the case. At minute im getting nothing. On the back of the tacho someone has wrote by the connectors "ignore" and then has "coil" pointed to the spade connection. Anyone with the same tacho have any ideas? At moment im trying it stationary as car not got front wheels on yet, does the engine need to be cranking, ie car moving for the tacho to work, could this be the reason. Any suggestions at all before I end up buying a new tacho? Many thanks.

View User's Profile View All Posts By User U2U Member
Adamirish

posted on 7/9/15 at 07:26 PM Reply With Quote
Not sure on the wiring but the tacho should work as soon as you turn the key.





MK Indy 1700 Xflow

View User's Profile View All Posts By User U2U Member
paulf

posted on 7/9/15 at 10:05 PM Reply With Quote
There were some smiths tachos that had to be wired in series with the coil feed rather than taking a signal from the coil but not sure if that is one of them , they were used on Mgs and such like.
Paul

View User's Profile View All Posts By User U2U Member
MikeRJ

posted on 8/9/15 at 11:10 AM Reply With Quote
quote:
Originally posted by paulf
There were some smiths tachos that had to be wired in series with the coil feed rather than taking a signal from the coil but not sure if that is one of them , they were used on Mgs and such like.
Paul


The Smiths RVI tachometer is the model that senses coil current. The RVC (which the OP has) senses voltage on the coil primary.

The RVC tachos usually work fine with electronic ignitions, and the bullet connector is the one that should go to the coil negative side. It's possible someone has been inside and modified it however.

View User's Profile View All Posts By User U2U Member
oldmansteptoe

posted on 28/9/15 at 08:27 PM Reply With Quote
thanks for the replies fellas and sorry for late reply, been bit busy at work but finally got round to it at weekend. turned out to be simply a duff tacho, tried another smiths tacho and worked no problem. cheers.

think im about ready for MOT now, just in time for Winter!!

View User's Profile View All Posts By User U2U Member

New Topic New Poll New Reply


go to top






Website design and SEO by Studio Montage

All content © 2001-16 LocostBuilders. Reproduction prohibited
Opinions expressed in public posts are those of the author and do not necessarily represent
the views of other users or any member of the LocostBuilders team.
Running XMB 1.8 Partagium [© 2002 XMB Group] on Apache under CentOS Linux
Founded, built and operated by ChrisW.