ORIGINAL: Lee MRC
I plan to purchase a new Four Star sixty and a new four stroke engine for it. The question is between the Magum XL , OS, Super Tiger, Thunder Tiger, or any other. I have no experience with small four cycle engines even though I am currently flying two planes with O.S. engines.
Are there any REAL troubles besides individual choice that plauge any of these engines?
I am planning to purchase a .91 FS engine and would cirtainly appreciate any and all comments concerning this purchase.
Please excuse the spelling --- but I am from TEXAS.
Lee K5MRC
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I would spend the extra money and buy the Saito .91 or 1.00. In fact, I just did, I bought the 1.00.
Why? Because the Saito 1.00 is much lighter than the OS/Magnum/Thunder Tiger .91 sized engines. The price for replacement parts is lower than OS. Magnum parts are reasonably priced. Thunder Tiger? Who knows? Can you even get them?
The Saito .91 or 1.00 won't require nearly as much fuss/ballast weight in order to get it to balance satisfactorily in the model you specified.
Now, were I trying to balance a biplane or any model that traditionally carried nose weight, I would buy the Magnum .91. Parts are readily available. Technicial support is great and they run very well, once broken-in. If I didn't want to bother with a special break-in treatment, but wanted the other characteristics of the Magnum .91 and expense was no object, I would buy the OS .91 four-stroke.