The start of a 265cc Ducar cast build with full efi control, GX200 clone

[Darren]

Some more time spent in the workshop. The exhaust has been fabricated to suit the silencer and fitment to the go kart, I need to get a feel for the correct depth of the O2 sensor before I weld in the bung, the exhaust is only 34mm.
The forth bearing support has been a fair amount of work, I also had to wait for bearings etc..
Lastly the interesting part, engine electrics, the Speeduino takes either a VR or hall sensor, both have their advantages, the hall sensor keeps everything in the digital domain, it works at logic 5vdc and sends back a stable 5-0v signal, so this was my preference on this occasion.
Anyway here's the video....

 

[Darren]

Just thought I'd give an interim update of the kart's progress.
The chassis is all done, the engine internals are all in and the wiring is around 50% done.
I have calibrated the IAT and head temperature probe, the injector has been bench tested for actual cc/min at 3bar
The fuel system is complete with the fuel pump now in the tank.
The ecu is having a couple of alterations, this should be back next week
The power system is all done, I have a choice of 12 or 20volt dewalt batteries, these go through battery protectors then to a 10amp voltage regulator to output a stable 12.3v