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06-19-2014, 10:25 PM
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Join Date: Oct 2012
Location: logan, utah
Posts: 405
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Where is the 200 hp rotax
Why hasn't rotax made a bigger motor for us yet ? I refuse to build anything until I see a modern type of motor available for a Rv 10 or 14. I want it all- fadec, E ignition, fuel smart, easy to cool (liquid?)
Oh and not 50k ok ?
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Erik Mortenson
Rans S-20 low and slow
14 build working on wings
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06-19-2014, 10:32 PM
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Join Date: Feb 2010
Location: Perth, Western Australia
Posts: 1,647
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Quote:
Originally Posted by erikpmort
Why hasn't rotax made a bigger motor for us yet ?
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Too busy supporting us RV-12 builders. 
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rgmwa
RV-12LR 912ULS
120346
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06-19-2014, 10:36 PM
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Join Date: Oct 2012
Location: logan, utah
Posts: 405
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The 12 is awesome but the performance is marginal for people that live at altitude. I know that's all relative, however...
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Erik Mortenson
Rans S-20 low and slow
14 build working on wings
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06-19-2014, 10:54 PM
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Join Date: Feb 2010
Location: Perth, Western Australia
Posts: 1,647
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This article speculates on what Rotax may have in mind in terms of bigger engines: http://www.avweb.com/blogs/insider/R...-222155-1.html
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rgmwa
RV-12LR 912ULS
120346
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06-19-2014, 11:34 PM
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Join Date: Oct 2012
Location: logan, utah
Posts: 405
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Awesome. Thanks. You have to believe there are a lot of people expecting this to happen.
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Erik Mortenson
Rans S-20 low and slow
14 build working on wings
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06-20-2014, 03:44 AM
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Join Date: Sep 2013
Location: Sydney, Australia
Posts: 16
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Quote:
Originally Posted by erikpmort
Why hasn't rotax made a bigger motor for us yet ? I refuse to build anything until I see a modern type of motor available for a Rv 10 or 14. I want it all- fadec, E ignition, fuel smart, easy to cool (liquid?)
Oh and not 50k ok ?
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the Rotax 914, will still put out 115Hp up to 15,000ft being turbo charged, what will an IO540 output be at that altitude? |
06-20-2014, 05:32 AM
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Join Date: Feb 2005
Location: Huskerland, USA
Posts: 5,862
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Eigth or so years ago Rotax built a V6 that was capable of producing 225 - 275hp. It was built and put on the shelf as a non viable product. Not from the production side or reliability, but from a marketing demand and liability worries side. Rotax is a VERY cautious, deliberate company. It must be a sure thing before they bring something to market.
http://www.vansairforce.com/communit...ad.php?t=15256
You would think the Avweb author would have known a little of the history of Rotax and larger HP engines. A working V6 model was at OSH 7-8 years ago.
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RV-7 : In the hangar
RV-10 : In the hangar
RV-12 : Built and sold
RV-44 : 4 place helicopter on order. 
Last edited by Geico266 : 06-20-2014 at 05:51 AM.
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06-20-2014, 07:09 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,515
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Quote:
Originally Posted by erikpmort
Why hasn't rotax made a bigger motor for us yet ? I refuse to build anything until I see a modern type of motor available for a Rv 10 or 14. I want it all- fadec, E ignition, fuel smart, easy to cool (liquid?)
Oh and not 50k ok ?
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The sad fact is that the volume (units/yr) are not high enough to support investment in development. in 2012 there were about 1000 piston engine planes sold worldwide. 25% were Cirrus (all models). Chevy sells 1000 Corvettes a month, and it has substantial commonality with high cost to develop components. Kit planes (AB) are another matter but still the demand is diverse in terms of specifications.
No company can invest $100-400M to design, develop, certify, and tool for 1000 engines per year. If there were ROI in it, it would happen.
Too many factors working against the product. Many of these factors are present in the amateur built category and that (IMO) is why Van's has found a sweet spot with his balanced designs.
I am just happy we are part of this sweet spot, as low tech as it is.
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Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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06-20-2014, 07:49 AM
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been here awhile
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Join Date: Dec 2004
Location: North Alabama
Posts: 4,300
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Quote:
Originally Posted by BillL
I am just happy we are part of this sweet spot, as low tech as it is.
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And low-tech works quite well in our application.....well enough that it isn't a valid reason to not build a great airplane. |
06-20-2014, 08:31 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,515
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Quote:
Originally Posted by Sam Buchanan
And low-tech works quite well in our application.....well enough that it isn't a valid reason to not build a great airplane.
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Absolutely!!
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Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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