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  #31  
Old 07-28-2020, 04:23 PM
rv6ejguy's Avatar
rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
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Aircraft engines don't operate at light load however so the difference in BSFC in cruise is not that large as we've seen from flight data from various folks posted here on VAF. That's why I'd like to see the data when Scott is able to release it from the production spec engine.

Austro publishes cruise BSFC figures of .33-.35, little better than what a good 9 to 1 Lyc can achieve with fuel injection and proper spark timing LOP. Dave Anders with his 11 and 12 to 1 engines is right there in diesel territory.

The latest SI engines from Toyota match or exceed light auto diesels in the BSFC arena- 41% TE as of 2018 and even match part load mpg in some instances.

I realize Scott can't say too much at this time but I appreciate his updates, candor and facts to date. Has been realistic data without the spin we've seen before on the topic.

BTW kudos again to Scott for taking on this project and the testing for Conti. Very cool and lots of extra hours well spent. Fascinating stuff.
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Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, Shorai- RV6A C-GVZX flying from CYBW since 2003- 445.2 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
https://www.youtube.com/channel/UCiy...g2GvQfelECCGoQ



Last edited by rv6ejguy : 07-28-2020 at 09:31 PM.
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  #32  
Old 07-28-2020, 04:35 PM
Ralph Inkster Ralph Inkster is offline
 
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Location: Calgary, Alberta
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I'm suprised nobody has mentioned the Higgs Hawk E330J/G in the running as a potential future choice. It even gives you the choice on what you can burn in it; Jet A / 100LL / Auto / Hydrogen gas, (maybe moonshine too).
350hp, 2 stroke, 8.5:1, spark plug ignition, 306 lbs plus accessories & cooling... Also has the important criteria of being lots of $$$
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built a few RVs, rebuilt a few more, hot rodded more, & maintained/updated a big bunch more
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  #33  
Old 07-28-2020, 07:46 PM
rocketman1988 rocketman1988 is offline
 
Join Date: Jun 2010
Location: Sunman, IN
Posts: 2,343
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...and it is currently made from Unobtainium...
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Phase I as of 12-02-2020

Dues+ Paid 2020,...Thanks DR+
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  #34  
Old 07-28-2020, 08:51 PM
gfb gfb is offline
 
Join Date: Jul 2014
Location: Madison, WI
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Quote:
Originally Posted by Ralph Inkster View Post
I'm suprised nobody has mentioned the Higgs Hawk E330J/G in the running as a potential future choice. It even gives you the choice on what you can burn in it; Jet A / 100LL / Auto / Hydrogen gas, (maybe moonshine too).
350hp, 2 stroke, 8.5:1, spark plug ignition, 306 lbs plus accessories & cooling... Also has the important criteria of being lots of $$$
Until Hawk has a flying RV-10 with the engine, it's as real as the similarly named DeltaHawk. As we have seen, aircraft engine design is not easy
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