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Paperweight...
As luck would have it, the Webra 40 I blogged about in my last entry is at least as old as the plane it was mounted in.
According to the wonderfully helpful Paul's Hobby Shop of Fargo, North Dakota, that old engine is designed to run on 0 to 5% nitro with 20% minimum oil content. The modern standard 15% nitro/18% oil was causing the engine to detonate and overheat, hence the loss of power. No one - and I mean no one - in my area carries the stuff and I would have needed to purchase a case. I have no idea whether or not that engine as four gallons of life left in it, so out it came and in went a lightly used Magnum XL .46 I had set aside for another project. Same basic size (the crankshaft snout is actually a tad shorter) and weight, so in it went. This engine was another prize from the same club raffle which went to a member who flies strictly electric. In fact, he was glad to give it to me since he had no idea what the heck he was going to do with it. All I need to do is continue to help him out with his buddy box, which I am more than happy to do. Tell you what, though: That Magnum revs like crazy, much faster than the Webra even with the tuned pipe. This should be fun in the air. |
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