Wildgoose Chase Moto Guzzi

General Category => General Discussion => Topic started by: TheSubmachine on March 24, 2015, 07:57:55 AM

Title: Cali Ev coil and mounting question?
Post by: TheSubmachine on March 24, 2015, 07:57:55 AM
Hello, I have a Cali Ev 1997, and my question is this..

The ignition coils are held with a mounting bracket, should this be earthed ?
As it balances on three lumps of rubber wasn't sure weather or not they where to insulate from frame of to stop damage through vibration.. Thanks Riki
Title: Re: Cali Ev coil and mounting question?
Post by: Kiwi_Roy on March 24, 2015, 08:23:27 AM
That's a good question, the drawing doesn't show a ground I suspect they are grounded through the positive lead.
Pull a plug lead and measure from the cap to chassis, it's about 8K from memory. Then unplug the coil and measure it again
it's either going to be 8K if it goes to ground or infinity if it goes to positive wire.

BYW check what type of High tension lead it has, mine started to miss and I found it had both a 5K resistor cap and the carbon
resistor wire which was arcing at one end, You should have copper wire with a resistor cap or resistor wire with a Non-resistor
cap, not both.

Adding a ground to the bracket certainly shouldn't hurt anything.

I will have a look at mine later.
Title: Re: Cali Ev coil and mounting question?
Post by: Wayne Orwig on March 24, 2015, 08:30:48 AM
Hello, I have a Cali Ev 1997, and my question is this..

The ignition coils are held with a mounting bracket, should this be earthed ?
As it balances on three lumps of rubber wasn't sure weather or not they where to insulate from frame of to stop damage through vibration.. Thanks Riki

No need. It is a three wire autotransformer. No ground used.
Title: Re: Cali Ev coil and mounting question?
Post by: TheSubmachine on March 24, 2015, 10:12:59 AM
Fantastic thanks, will give it a go.   ;-T
Title: Re: Cali Ev coil and mounting question?
Post by: Kiwi_Roy on March 24, 2015, 04:27:13 PM
As Wayne says, there's no connection to ground.
For the record from the cap to chassis should be just over 8K Ohms
(an Auto transformer is one where the primary and secondary share a common winding)