You guys know how to make an old car backfire? Extremely hazardous to your engine health but it's not difficult.
RC17 has a cable driven tach, not much chance the spark unit has any way to sense engine speed electronically there. If you research NT400 which was fitted with an electronic tach, you will find some reference to 'some units' (apparently not those sold in america) and those may feature an additional wire connection between the tachometer and the spark unit. (that would explain his Philippean NT400' fifth connector.) That info was gleaned off forums and not a service manual or Honda document. If anybody has a wiring diagram of a spark unit that does more then just spark, post it up so we can see how that works. Logically. if you were going to curb the revs on a motorcycle fitted with CV carbs, it would be pretty silly not to control revs through the carburetor vacuum control.
If y'all figure out what happens to all that excess fuel going out the exhaust pipe on your intermittent spark unit unicorn, post that up so we can see how that works too. Most likely, dumping raw fuel into the exhaust at top speed is not a feature that would make it past EPA, that concept might still fly in some third world country, at least right up until it catches fire.
I've never heard Toni Bou bounce his 4RT off a rev limiter so I seriously doubt mine even has a rev limiter, but I'm going riding now and see if I can find one.
RC17 has a cable driven tach, not much chance the spark unit has any way to sense engine speed electronically there. If you research NT400 which was fitted with an electronic tach, you will find some reference to 'some units' (apparently not those sold in america) and those may feature an additional wire connection between the tachometer and the spark unit. (that would explain his Philippean NT400' fifth connector.) That info was gleaned off forums and not a service manual or Honda document. If anybody has a wiring diagram of a spark unit that does more then just spark, post it up so we can see how that works. Logically. if you were going to curb the revs on a motorcycle fitted with CV carbs, it would be pretty silly not to control revs through the carburetor vacuum control.
If y'all figure out what happens to all that excess fuel going out the exhaust pipe on your intermittent spark unit unicorn, post that up so we can see how that works too. Most likely, dumping raw fuel into the exhaust at top speed is not a feature that would make it past EPA, that concept might still fly in some third world country, at least right up until it catches fire.
I've never heard Toni Bou bounce his 4RT off a rev limiter so I seriously doubt mine even has a rev limiter, but I'm going riding now and see if I can find one.
