Hi,
My project CB400 is missing it's original tachometer. Somewhere down the line I will be addressing instruments, switches, controls, etc. First things first and I'd like to try to get this bike running well first. For tune-up purposes in the meantime I've purchased a small digital tachometer that reads the spark/pulses off the spark plug wire. It needs to be adjusted based on the spark/pulse per revolution.
The instructions that come with the tach seem to suggest that "most offroad motorcycles use the 1 pulse: 1 revolution setting. Motorcycles with a battery or lighting typically have ignitions that send two pulses for every RPM (2P;1R)"
Does anybody have any input on this? Would this hold true for my CB (2P:1R)? These tachs seem to typically be used for engines that don't typically have tachs such as dirt bike, snowmobiles, etc. Reading around online it seems people also use them to tune up chainsaws, etc. I just wanted something quick and easy to attach so I could tune the bike up. I'm sure it will come in useful for other things as well.
Cheers
My project CB400 is missing it's original tachometer. Somewhere down the line I will be addressing instruments, switches, controls, etc. First things first and I'd like to try to get this bike running well first. For tune-up purposes in the meantime I've purchased a small digital tachometer that reads the spark/pulses off the spark plug wire. It needs to be adjusted based on the spark/pulse per revolution.
The instructions that come with the tach seem to suggest that "most offroad motorcycles use the 1 pulse: 1 revolution setting. Motorcycles with a battery or lighting typically have ignitions that send two pulses for every RPM (2P;1R)"
Does anybody have any input on this? Would this hold true for my CB (2P:1R)? These tachs seem to typically be used for engines that don't typically have tachs such as dirt bike, snowmobiles, etc. Reading around online it seems people also use them to tune up chainsaws, etc. I just wanted something quick and easy to attach so I could tune the bike up. I'm sure it will come in useful for other things as well.
Cheers