4/22/2023 0 Comments Whynotwin![]() ![]() ![]() However, now that I've learned about the octane rating difference, all my concern about avgas is probably moot, and I bet I can safely run 92 octane (in the US) without additives. It does appear that more informed posters on MX forums also suggest to not use avgas in modern four stroke dirt-bikes because it collects on the titanium valves. To completely add to my confusion, I guess the octane ratings in the UK are higher than that in the states, and the 95-98 octane requirement is actually equivalent to 92 premium in the states (because the UK uses RON, and the US uses MON). Well, I was writing to Bailey, and in the process did some research about common 4-stroke dirt bike engines, avgas, compression ratios, and octane ratings. Has anybody tried anything like this? Why / why not? Seems to me the ideal paramotor would have two vertically-opposed 75-100cc two-strokes. It would be really cool to have somewhat better confidence about doing so-at least having the ability to limp out. Given that, it kinda puts me into territory where I'd be worried about flying long distances, especially over water, rocky areas, dense trees, etc. ![]() Though it doesn't seem to have gained acceptance, it does seem that others have had the same idea.įrom reading and watching, it seems that _active_ pilots (of two-strokes) tend to get about 1 motor out per year or per 1-200 hours. There's the British twin-motor electric PPG. The openppg project has 4 electric motors and seems to work well-seems the only limitation is the classic energy density of batteries vs. I'm new to the sport, and I assume the answer to this is going to be some combination of cost, complexity (two starters, two clutches, double the electrics, and fuel lines), and weight, but I'd like to see if there's anything else to consider, or if people have stories about failed attempts.
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