How about on the engines that have no bolt holding them in??
Thanks,
Target

I am interested in using one of these for Control Line Stunt (no throttle, just a venturi).
What is the weight with muffler?
Will this engine likely be able to be tuned to fly the favored 4-2-4 break? That is, take off and level flight in a fast 4 cycle, then when maneuvering (and nose up) pull into a 2 cycle, then when nose down, back into a 4 cycle?

I would think that it could, with a properly small venturi. And it would only need about 2oz of fuel to make the required 6 minutes of flight time.

What size venturi would come on a GX40?
Could I also get a "blank" venturi with just a small pilot hole that I could use to tune?

Has anyone run not on muffler pressure? A uni-flow tank setup is popular with control line pilots.

I'm sorry/Thank you.
My order has been made and I look forward to receiving the parts.
I'll post pics of my progress if I should have any issues with the carb/venturi swap.

Target wrote:


Hello, I am still waiting for the venturi to come back into stock. While I wait, I have a question-

Does the 04-07 venturi bolt in or glue in?
My existing RC carb has a bolt and nut that crosses the crankcase below the carb, and appears to also have a small o-ring that seals the two pieces together when its all tightened up.
Thanks again for the assistance.

R,
Target

Any idea of when the venturi will be back on stock? Will it be within a month?

Yay, great answer!
Now I'll just wait for a venturi for it.
Thank you.

The case shows a 1.0.
Thanks.

Thanks for the parts help, that does make it easier.
How can I tell if it's the .061 or .049?
Thanks again.

Hello,
I have an older Norvel r/c engine, either .049 or .061, and either ame or big mig, not sure.
I'd like to convert this to control line.
How do I determine which of the 4 possibilities I have?
Thanks in advance.
Target