I ran my new 3W80 today and am wondering what rpm's I should be expecting to see. With about one gallon of gas thru it, I was turning 5,850 rpm with a 3W 26x10, 40:1 lawnboy, and a LL cannister. My needles were set at H - 1/2 and L - 3/4. Am I in the ballpark of what I should be seeing. The engine was running very good at these settings but I hope that I get more vertical performance as the engine gets more time on it. I am running it in a H9 33% Extra.

Bobby

Like every other 3w they will take some time to break in, should see better numbers in about 10 gallons. Also, the 3w 26x10 is more load than a menz or mejzlik, so with a menz 26x10 I would think you would be around 6100-6200 and maybe up to 6500 with a mejzlik. How heavy is your extra?

Hey Charles, since I talked to you I took the 106 out of this plane and installed the 80. I also removed three rudder servos and the metal tray and installed one 5955 on the rudder. I removed the smoke system and I still plan to take out the 2-4000mah lipo batteries and install 2-2800's. That will save a little more weight. I also went to carbon fiber landing gear but that was actually because the factory gear kept sagging. I have not weighed it yet, but I know that it is much lighter. I need to weigh it and see how much it weighs now. I also have a three blade prop to run on it but Bobby at Cactus said to run several gallons thru it with the two blade prop. I must say that it flew much better today with the 80 in it. I think the lighter plane made a big difference, even thought there was a big difference in the vertical performance. I am thinking that will get better as the engine gets broken in.

I have not given up on the 106, I sent it to Bobby to get checked out and ordered a AW Extra 260 last week for it...guess that's my next project.

Bobby

Watching this thread...I'm considering this engine for a 33% H-9 Edge.