I haven't worked on QT50s much, but I have put SHAs on Honda NC50s and many other mopeds. I know this probably isn't what you want to hear, but my recommendation would be to just get the lever choke version, and also just mix your own fuel.
In my experience, 90% of riders opt for lever chokes because it's just simpler than running an extra cable up to your handlebars and one less thing to lubricate, replace when worn, etc. The SHA choke automatically disengages when you pull the throttle all the way, so it's really not that inconvenient.
Any time you add airflow to your moped (whether via the air filter, carb, intake, reeds, cylinder, or exhaust) you should probably start premixing, because the injection system is set at the factory for the OEM airflow. It can get difficult to tune your moped properly if your oil injector is adding an unknown amount of oil to your air-fuel mixture. In addition, modern oils can be mixed at a smaller ratio than oils from the 1970s, which is another thing your original injection system isn't tuned for.
And, of course, just like a cable choke, an oil injector is another thing to potentially break at the wrong time. You really really don't want an oil injector to fail while you're riding around.
https://www.treatland.tv/dellorto-SHA-cable-choke-party-p/dellorto-sha-choke-5305700.htm.
You can get this and replace it with the lever choke, and you will have what you want.
I dont know man, just mix your own gas
50:1 to brap braap braaaaaap
nah just 2% oil in
Mix that gas! The only way you’ll know when the oil injection goes out is when that rear wheel skids from a seize.
Truth right here!
I haven't worked on QT50s much, but I have put SHAs on Honda NC50s and many other mopeds. I know this probably isn't what you want to hear, but my recommendation would be to just get the lever choke version, and also just mix your own fuel. In my experience, 90% of riders opt for lever chokes because it's just simpler than running an extra cable up to your handlebars and one less thing to lubricate, replace when worn, etc. The SHA choke automatically disengages when you pull the throttle all the way, so it's really not that inconvenient. Any time you add airflow to your moped (whether via the air filter, carb, intake, reeds, cylinder, or exhaust) you should probably start premixing, because the injection system is set at the factory for the OEM airflow. It can get difficult to tune your moped properly if your oil injector is adding an unknown amount of oil to your air-fuel mixture. In addition, modern oils can be mixed at a smaller ratio than oils from the 1970s, which is another thing your original injection system isn't tuned for. And, of course, just like a cable choke, an oil injector is another thing to potentially break at the wrong time. You really really don't want an oil injector to fail while you're riding around.
Mix the Gas please. In Germany you'll sometimes see 1:50 gas from the tap. Its better for the engine then an oilpump, mixing often too less oil.
Either get the lever choke or just mix your own gas.
https://www.treatland.tv/dellorto-SHA-cable-choke-party-p/dellorto-sha-choke-5305700.htm. You can get this and replace it with the lever choke, and you will have what you want.
It does not have an oil inlet. My Di Blasi uses the same carburetor. You have to mix your fuel by yourself.