Friday, August 18, 2023

First flights.

The temperature went into the mid 70's in the morning and I took advantage of it. I didn't have the engine running fast enough but it was enough to give me information to make some changes. First was the prop, I put on a biger one but the next morning it wasn't any better so I put the first one back on. The glow plug acted like it was not right so I put in a new one. I thought the venturi was too large but it's not. I was going to change the needle valve assembly but didn't have a spare. . Then I figured that more nitro would make me open the needle more and maybe that would do the trick. I mixed up a quart of about 8% nitro up from the 2% I use and ran the engine. I had to open the needle to lower the rpm to what I want and that did fix my problem. Plus more nitro makes a lot more power. I may get out tomorrow morning but the temperature is going up again. It's 104 right now.

Monday, August 14, 2023

Another new plane.

First time in the sun. 47.7 ounces, Brodak 40. It's ready to fly except for the high temperatures. Mid 70's at 0700 is my limit and that is hard to come by lately. The balance is a bit tail heavy but shouldn't be awful.