[imslow]

Does it make a difference if the laminations (the stubs coming out of the ends of the coil) are grounded to the frame? I am using the holes in them as mounting points, as they match the holes for the stock coils . . . But the directions say that they and the coil towers should be free ffrom touching or getting near touching any part of the frame (as installed on a Harley)

JB? BFD?

scott

 

[jbranson]

Hehe...I thought those WERE the mounting holes

In a good coil they should be electrically isolated inside the coil. However they do transmit magnetic field....it could dump some of the field into the frame....wouldn't harm anything but might lessen efficiency a tad. Mount them with SS bolts and I can't see it making enough difference to matter.

JohnnyB

 

[bfd]

Evil
Mine is mounted on a bracket and not touching the frame directly.
bfd

 

[jbranson]

Scott,
I should reiterate....I DON'T know for sure that's it's ok to use the laminate core for mounting. I'm only guessing. Safe way would be to do what BFD did....or at the least use some rubber washers or something.
JohnnyB

 

[imslow]

I only asked because the bike wouldn't start on Saturday, I only had time after a cam change to run it down the hill twice. I did not have time to check anything. So Sunday I checked, and sure enough there is a big fat blue spark. So I knew it was gas or timing. I then put a few teaspoons of gas down the throats, and bang she fired right up.

this was the first winter I had ever taken the time to drain carbs, put batteries on the Tender, and other stuff. Sure enough, the carbs are clogged, even after i drained em for the winter. Must have still ahd some gas in passages or something. they're coming off this afterrnoon.

s

 

[imslow]

and yes, i am going to put the coil in a different place.

But another question regarding the coil. It came with the cool yellow accel wires, whch are not metal core, they are that supression core. Can I presume that because we are running electronic ig that is OK? I remember hearing someone say that for a points triggered ig you should run solid wire core . . .

 

[bfd]

Evil
I'll take a look tonight at the bike to see exactly how it's mounted. I've been fooling with the 350 so long the 175 has been under the sheet right where I left it last November.
bfd

 

[bfd]

I'm running those wires w/Pertronix and it seems fine. The right cylinder cuts out between T9-T10 but I think that's carb related. Swapping plug leads didn't change it.
bfd

 

[imslow]

BFD, no need to look, as there are plenty of places to put it.

 

[jbranson]

I think most plugs wires of the 70's or later were resistor core. You can run about anything on a point or pertronics (inductor) ignition. You have to be careful about CDI though...some require no resistor (like PVL) others like resistor caps.
JohnnyB

 

[n/a]

I've been running the same coil set up on the Ducati for the past 15 years. Mounted it direct to the frame with the supplied mounting holes and have used the "cool" yellow wires that came with it. NEVER have I had 1 single issue. The whole system has been flawless.

Champ