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OS MAX 40LA

Product Reviews · 1 of 1 known posts recovered

MikeC · Jun 29, 2003 12:07 PM

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I purchased a new OS MAX 40 LA at my local Homewood Hobby shop in
Birmingham, Alabama. I asked my flying Buddy Bill Norman to bring the engine and two props to the field on Sunday. Bill asked if I was using the same method to break this engine in as I did on the last LA that I purchased.

Well for those of you who do not the last four months anywhere in the South there has been rain , rain and more rain so the previous engine, a LA46 that I broke in was performed on the front end of an airplane while flying it, no bench time at all.

Well I bolted up the engine into a brand new Brodak Zero that I also purchased from My local hobby shop. Attached fuel lines, muffler and here we go. I am using GMA 5/29 fuel, Zinger 11/6W, Fox Idle bar plug and a Tru Turn spinner. I chose Tom Morris 61' x 015 lines. The Temp is 84 Degs F, humidity 74%, winds light.

The plane was fueled, needle valve was opened 3 1/2 turns. I primed the engine and turned the engine over three time to make sure of the engine lubrication. I applied the glo driver and on the second flip the engine came to life.

After about two semi-rich flights, I started to find the needle valve setting for the engine. These engines are great performers. The OS LA's are a good line of inexpensive modle airplane engines which anyone can use no matter what you skill level.

Oh Yes, the Brodak Zero is a great war bird kit, it built up straight and simple. I opted for the A9 style wing tips with adjustable lead outs and canopy lines.

The Brodak Zero Will groove better than the Brodak Hawker Hurricane that I flew two years ago and that is saying a lot. Manoeuvers are good however you will need to limit the amount of elevator throw. The elevator surface is large will turn the airframe rather quickly,it's way faster than needed, use the lowest hole in the elevator horn. Landings are not as fast due to the thickened leading edge and the airfoil but boy are they stable while landing. I haven't flown over asphalt yet, so the landings and take offs are subject to grass height but from what I have experienced I can't wait.

This combo rates four happy faces and one big smile from yours truly. Hopefully next week I'll get to post a picture of this project. Till then let's burn some fuel.

Mike Clark: