Triumphrat

07-09-2004

hello all,
i was wondering if anybody can help with a troublesome
spot on my behalf. i have a multimeter and know how to use it, but im having trouble knowing what resistance or voltage a coil pack or cdi box should be operating to be good. i cant find info anywhere on these items there must be a baseline number for these units to use. for instance a points coil 12v should be 6 ohms ...?? a 12v
cdi coil should be 3 ohms ...?? how can you check a cdi
box for proper voltage ..?? im always bringing home old
non-running bikes usually there easy to get fired, but i need more electrical troubleshooting abilities especially
with cdi units. thanks for help and reading...
chas

Slinky · 07-09-2004

Wow you have an awful lot of bikes there Chas

I can't help you on the techie stuff, but I would imagine there is a lot of variation between different CDI boxes.

Haynes do a motorcycle electrics manual, it might be worth checking it out. The copy I have is so old it probably goes back to before the day's of CDI

bobshields55 · 07-09-2004

This is from the 1999 Triumph service manual that covers:
Trophy, Daytona, Daytona Super 3, Trident, Sprint/Sport/Executive, Tiger, Speed Triple, Thunderbird/Sport, Legend TT, Adventurer.

Page 16.21 "To confirm a coil fault, attach an Ohm meter (0-1 Ohm scale) across the coil primary connectors. Replace coils with a resistance outside 0.63 Ohms +/- 10%.

Hope this helps you and good luck with all that machinery.

Bob

07-10-2004

thanks slinky and bob,
electrical is a weak spot for me, i hate not understanding something. .. hopefully in my lifetime i get to build and
restore the bikes i own now and more..!! it is very addicting, and its alot of fun enjoying each one for what it is.
chas

bobshields55 · 07-10-2004

Post some photos if you ever get the spare time so we can see what you got.

Ride safe

Bob :-g