Venturi size for an ST .45 R/C

[Juan Valentin]

        I have a friend coming back to Control line after many years and he needs a venturi for his ST .45.I don`t know if the engine timing might be suitable for stunt but I can make one but need to know what would be the desirable ID size for the venturi. All help Appreciated.
                                                                                                                                 Juan

[TDM]

Try to post this thread in the Engine set up tips forum.
Second be more specific witch ST .45 motor do you have.

[NED-088]

       I don`t know if the engine timing might be suitable for stunt

To my knowledge, none of the .45 s were anywhere near a useful stunt timing.
So be prepared to do a lot of work first and being disapointed in the end....

[Tim Stagg]

Juan,

I had Byron Barker rework an RC ST 45 which is one of the new Chinese made engines. He hemied the head, did a little minor re-timing work and made the venturi with a sprinkler ST needle valve.

Engine runs a very consistent 2-4 break. he has reworked several of my engines and this one is by far the best. Look in the magazines for CF Slaterly Company, he does a great job and is a heck of a nice guy.

Tim

[Juan Valentin]

    Thanks for the advise I`m cleaning the engine and will post a pic as soon as I have it assembled.
                                                                                                                                Juan