Pitts pressure return - Page 2 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 04-07-2016, 06:43 AM   #11
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Re: Pitts pressure return

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Years ago we ran engines without pressurizing the tank at all. Back then we were content with a smaller tank that gave us an 8 to 10 minute run. The engines also had smaller carb bores and drew fuel better on their own. With a small tank and proper tank placement most of the modern economy engines should be fine too.

Your Pitts muffler will give you some pressure but you may need to down size the tank.
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Old 04-07-2016, 09:40 AM   #12
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Re: Pitts pressure return

Thanks guys, this is all really good information. I started thinking about this when I was adjusting the low and high speed needles on my OS 90 engine, wondering if the Pitts was impacting the situation. I guess you can go nuts worrying about little things. I was reading a thread regarding fuel tubing size and the debate raged on and on, though in the end it was generally agreed that it made almost no practical difference.
Dean Myers
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CMPRA Calgary (www.cmpra.com)
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