I am in the process of setting up the in-flight mixture control arm (the stock one that came with the OS91). If I am understanding it correctly, you will not be able to manually adjust/turn the needle valve (by hand) while this is attached. This is a new engine. So, I guess the setup procedure would be to first get the engine running good, and then attach the mixture control arm (onto the needle valve) ? ? ?
I have seen other setups/arms that allowed the needle valve to be turned manually while the in-flight mixture control assembly remained attached ... i guess this is not that type ? Thanks. Bob

Use the OS needle valve for a paper weight. The only systems that works are the BVM and JMP in-flight needle valves.

Take jetflyerf86's advice!!! You will save yourself an engine and possibly your plane.

Kevin

Go with the JMP one. From what I've seen it's the most common out there and my experiance with four or five of them is that they've been flawless in operation.

Here here. I agree. I have 4 Starfires with the JMP setup with over 500 flights and they are flawless. Make sure to take out the needle and put the screw plug, that comes with the engine, in place of the needle value assembly.

Dave

HI does anyone have the JMP Website URL please?
Thanks Viper

Here you go:

[link=http://www.jetmodelproducts.com/]http://www.jetmodelproducts.com/[/link]

...jim