seanthomasking
MEMBER
- Joined
- Mar 2015
- Messages
- 59
Evening all.
After a few solid initial spins on a build with the old Veglia clocks installed, I hooked up the New smiths electronic instruments, calibrated the Speedo & wired them correctly as per the instructions.
Result = Tacho has no rev reading. Needle sweeps left to right when turned on and electrics seem fine but instrument does not read.
Double checked all wiring & spoke to a few well-respected members online & I was put onto the AccessNorton threads that related to this happening - it seems I am not the only one to have had this happen.
I found that a 1/2 watt 22kΩ value resistor is needed in the wire that reads from the negative pole of the coils if you run a tri-spark ignition.
This is information that is not included with the product purchased. There was ZERO in the instructions from Andover OR the smiths Pamphlet regarding an in-line resistor, with or without a trispark ignition.
The bike is purring, the tri-spark isn’t fried as one member had it fail after hooking up the instruments - but no reading on the tach. I’m contacting andover to advise as they’re normally on the ball, & to see what the go is as these are bloody expensive.
Keep you posted, I just can’t fathom how selling a product to the Norton market with thousands of owners running a trispark ignition with no warning or appraisal of what’s occurred beforehand isn’t reckless.
STK.
After a few solid initial spins on a build with the old Veglia clocks installed, I hooked up the New smiths electronic instruments, calibrated the Speedo & wired them correctly as per the instructions.
Result = Tacho has no rev reading. Needle sweeps left to right when turned on and electrics seem fine but instrument does not read.
Double checked all wiring & spoke to a few well-respected members online & I was put onto the AccessNorton threads that related to this happening - it seems I am not the only one to have had this happen.
I found that a 1/2 watt 22kΩ value resistor is needed in the wire that reads from the negative pole of the coils if you run a tri-spark ignition.
This is information that is not included with the product purchased. There was ZERO in the instructions from Andover OR the smiths Pamphlet regarding an in-line resistor, with or without a trispark ignition.
The bike is purring, the tri-spark isn’t fried as one member had it fail after hooking up the instruments - but no reading on the tach. I’m contacting andover to advise as they’re normally on the ball, & to see what the go is as these are bloody expensive.
Keep you posted, I just can’t fathom how selling a product to the Norton market with thousands of owners running a trispark ignition with no warning or appraisal of what’s occurred beforehand isn’t reckless.
STK.
