- Fri Apr 26, 2024 9:51 am
#68170
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Hey all
After a long gestation, the injected 360 Bultaco road race replica is finally completed.
The EFI system has been tested by spinning the trigger wheel in the lathe and offering up the VRS sensor mounted in the toolpost.
Everything worked as it should at a minimum of 50 rpm and a max of 1500 rpm
I let the system run like that for over an hour and fiddles around with VRS wiring to see if I could incite some mis- triggering etc but even my ghetto spec 2 meter long extension wires to reach from the bike loom to the lathe, simply twisted and taped and then draped around the engine, wiring looms and importantly next to and actually laying on the ignition coil couldnt incite a mistrigger or reset so thats a good start.
Im currently using a Delco D585 "Truck" (LS-2/LS-6) smart coil. It produces a very strong spark on a long(ish) dwell time of 4.5 Ms but this is a low revving engine at 7500 rpm hard limit so no issues.
The stepper driver board works fine and set the GM style idle stepper and on power on the valve runs fully open, closed and then returns to whatever number of steps commanded.
The last thing I need to test before lighting a fire in this thing is alternator output voltage stability driven into an Ultra-capacitor bank Im using as a battery. Voltage regulation courtesy of a Shindengen MOSFET rec/reg.
The "battery" ran the entire electrical system for about 10 minutes after about a half minute charge from a 5a DC power supply so sufficient reserve capacity to get the thing running
The EFI system is only drawing about 2.2 amps with the fuel pump running less about 7 amps at 4.5Ms per spark event and the 220w 3 phase alternator should keep the system alive as the engine will idle around 2000 rpm
Im hoping to borrow a roller starter this weekend to do voltage checks and set primary ignition offset and its then time to add some fuel and light it up!!!
I took it out to a vintage and classic bike show a couple of weeks back.
After a long gestation, the injected 360 Bultaco road race replica is finally completed.
The EFI system has been tested by spinning the trigger wheel in the lathe and offering up the VRS sensor mounted in the toolpost.
Everything worked as it should at a minimum of 50 rpm and a max of 1500 rpm
I let the system run like that for over an hour and fiddles around with VRS wiring to see if I could incite some mis- triggering etc but even my ghetto spec 2 meter long extension wires to reach from the bike loom to the lathe, simply twisted and taped and then draped around the engine, wiring looms and importantly next to and actually laying on the ignition coil couldnt incite a mistrigger or reset so thats a good start.
Im currently using a Delco D585 "Truck" (LS-2/LS-6) smart coil. It produces a very strong spark on a long(ish) dwell time of 4.5 Ms but this is a low revving engine at 7500 rpm hard limit so no issues.
The stepper driver board works fine and set the GM style idle stepper and on power on the valve runs fully open, closed and then returns to whatever number of steps commanded.
The last thing I need to test before lighting a fire in this thing is alternator output voltage stability driven into an Ultra-capacitor bank Im using as a battery. Voltage regulation courtesy of a Shindengen MOSFET rec/reg.
The "battery" ran the entire electrical system for about 10 minutes after about a half minute charge from a 5a DC power supply so sufficient reserve capacity to get the thing running
The EFI system is only drawing about 2.2 amps with the fuel pump running less about 7 amps at 4.5Ms per spark event and the 220w 3 phase alternator should keep the system alive as the engine will idle around 2000 rpm
Im hoping to borrow a roller starter this weekend to do voltage checks and set primary ignition offset and its then time to add some fuel and light it up!!!
I took it out to a vintage and classic bike show a couple of weeks back.
- By PJgearhead