My first Fox RC engine was Fox Eagle I, purchased in 1973. I flew it for a few of years and was very happy with it. Circa 1976 I crashed the plane it was in damaging the engine which I then sent off to Fox for service. When it came back, it had the new (at that time) MK X-B carb on it. It had no instructions for the new carb and the carb needle valves were in a seperate package. Since at the time I had a couple of new Enyas I was flying, I packed away the engine. Well, it is now time to get it out and put it back to work. Now for my question. Does anyone know what the initial settings were for both the low and high speed needle valves on the MK X-B carb? I am most interested in the initial low speed needle valve setting.

Konrad, I too would be interested in seeing the modifications of the MK X-B low speed needle valve for improving the mid range since I may need to do that.

General comment: Last fall I bought a new .74 Eagle from Fox with the new carb on it. I have been breaking it in on the test stand and it has performed great. I really like the new carb. I will be puting it in the new GP Escapade 60 when it arrives, hopefully at the end of January. If it performs in the air as well as I expect, I plan to get a second one for the Ultra Sport 60 I am building.

Bruce