- Tue Jul 27, 2021 3:48 am
#52049
Hey, my latst project idea is to efi convert a yamaha 1988 FZR250. For those unfamiliar, this bike is a 4 cylinder 250cc motor that redlines at around 18,500rpm. So obviously this makes it a bit of a challenge with such small cylinders (62.5cc) in regards to finding itbs etc. The main questions I have is about the speeduino capabilities however.
1- how will the software/hardware handle such a high rpm? Is there a known limit to how quick this computer can run an engine?
2- the fzr has an 'EXUP' valve which is just a large valve in the exhaust which creates backpressure at low rpm. Its controlled using a stepper motor from the factory. Is there a way to get that to be controlled? Possibly involving editing the base code in the arduino ide? The valve starts opening around 4krpm and is fully open around 10krpm.
3- i want to develop my own PNP board, because things aren't complex enough already . Mainly though because I think I can make the package smaller to fit in the limited space. With the high rpm, I'm concerned with heat build up from the MOSFETs. Anyone got some insights? Also any particular protocol for wire routing on the pcb to avoid unwanted noise etc?
At this point the first step would be to control the ignition first before tackling the fuel side. Few more things are, bike runs wasted spark and pick-up is a VR sensor so obviously will need conditioner. Can this be integrated into the motherboard or just buy a module?
Cheers
1- how will the software/hardware handle such a high rpm? Is there a known limit to how quick this computer can run an engine?
2- the fzr has an 'EXUP' valve which is just a large valve in the exhaust which creates backpressure at low rpm. Its controlled using a stepper motor from the factory. Is there a way to get that to be controlled? Possibly involving editing the base code in the arduino ide? The valve starts opening around 4krpm and is fully open around 10krpm.
3- i want to develop my own PNP board, because things aren't complex enough already . Mainly though because I think I can make the package smaller to fit in the limited space. With the high rpm, I'm concerned with heat build up from the MOSFETs. Anyone got some insights? Also any particular protocol for wire routing on the pcb to avoid unwanted noise etc?
At this point the first step would be to control the ignition first before tackling the fuel side. Few more things are, bike runs wasted spark and pick-up is a VR sensor so obviously will need conditioner. Can this be integrated into the motherboard or just buy a module?
Cheers