- Joined
- Mar 30, 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.
Electronic instruments
I have electronic instruments on both commandos. I put them on the mk3 first. Back when i put the tach on the mk3 they did not send a resistor. The tach took out my trispark or the trispark took out the tach. Not sure which it was, but it was ok for about 500 miles. Make sure you put the...
www.accessnorton.com
Tri-Spark and Podtronics
I get dealer news from Tri-Spark, I got the following from them late last week, it may be of interest to the group: IMPORTANT NOTE ON PODTRONIC SINGLE-PHASE VOLTAGE REGULATORS NOT SUITABLE FOR USE WITH TRI-SPARK Do you have customer with the problem of misfiring at 3000 to 4000 RPM but not at...
www.accessnorton.com
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.
