Byron Ducted Fan
#1
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Join Date: Mar 2004
Location: UlladullaNSW, AUSTRALIA
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Byron Ducted Fan
Hi All,
Can any one tell me how much HP a Byron 91 Ducted fan can take, looking at building a setup to load up 30cc 2 stroke marine engines on the bench.
Cheers
Andrew
Can any one tell me how much HP a Byron 91 Ducted fan can take, looking at building a setup to load up 30cc 2 stroke marine engines on the bench.
Cheers
Andrew
#2
I would say wrong question. I’m sure the limit is RPM, so there is a good chance your 30cc engine will not be loaded enough when it’s at maximum RPM. What is the theoretical maximum rpm your engine will run to?
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Join Date: Mar 2009
Location: willow springs , IL
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I over heard a few brains talking back in the ducted fan days that a properly tuned 91 DF puts out about five horse power. So if that is true a 30 cc 2 stroke with a belt drive geared to step up the fan RPMs you need would be a little short on HP.
#5
I race gas boats and marine engines run around 15,000 to 16,000 in stock form and 18,000 to 20,000 RPMs if modded. Are you loading up the motor so you can tune it to see what advances you made ?
Last edited by MarkF; 02-07-2021 at 09:18 AM.
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Cheers
Andrew
Last edited by The Ghost; 02-07-2021 at 11:40 AM.