10 Jul 2025, 09:37 [ UTC - 5; DST ]
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Post subject: Re: The verdict is in.....MU-2 Posted: 06 Jun 2016, 19:36 |
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Joined: 12/03/14 Posts: 20444 Post Likes: +25718 Company: Ciholas, Inc Location: KEHR
Aircraft: C560V
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Username Protected wrote: I learned today from talking to a engine shop that does the Super One conversion that essentially they remove the gearbox forward and replace with a -6 gearbox and compressor which takes the compressor from 60 cubic ft/sec to 80 cubic ft/sec. Yes, it is essentially a -5/-6 compressor section mated to a -1 turbine section. Quote: Another interesting statement he made was that the engine components would go through less thermal distress because of improved cooling with increased airflow which would reduce costs at inceptions as a by product of not running the engines right up to the limits. This sound great on paper but I thought these engines were designed to be operated right up to the limits without causing more "thermal distress". The whole point of the conversion is to generate more HEAT at the same TEMPERATURE. That is how you get more power. To do that, you need more mass flow, that is, more air. So I don't think the Super 1 actually experiences meaningfully different temperatures, which means similar thermal "distress". BTW, AWI (alcohol water injection) also can be used to increase power with no more heat. It does this by the heat of vaporization of the fluid which causes expansion and more power but with less temperature. Then you can increase the fuel flow to get back to the same temp, but now with more power. This is used on some models (Merlins) to provide for increased power during an engine out emergency. MU2s don't have it. Mike C.
_________________ Email mikec (at) ciholas.com
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Post subject: Re: The verdict is in.....MU-2 Posted: 08 Jun 2016, 10:30 |
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Joined: 12/16/09 Posts: 7228 Post Likes: +2100 Location: Houston, TX
Aircraft: BE-TBD
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Username Protected wrote: $80k per engine is the cost of the conversion. That doesn't include any inspections, SB's or anything else. One owner who has an F says 25-30 knot increase and much better climb through 18,000. That's not beyond the pale. I thought it might be more, perhaps a lot more. Could make sense for a guy attached to his airframe for one reason or another.
_________________ AI generated post. Any misrepresentation, inaccuracies or omissions not attributable to member.
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Post subject: Re: The verdict is in.....MU-2 Posted: 08 Jun 2016, 10:36 |
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Joined: 12/17/13 Posts: 6652 Post Likes: +5960 Location: Hollywood, Los Angeles, CA
Aircraft: Aerostar Superstar 2
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Username Protected wrote: $80k per engine is the cost of the conversion. That doesn't include any inspections, SB's or anything else. One owner who has an F says 25-30 knot increase and much better climb through 18,000. That's not beyond the pale. I thought it might be more, perhaps a lot more. Could make sense for a guy attached to his airframe for one reason or another.
Yeah, in the Commander world that takes an older model up the same speeds as later 690A/B model. Is it worth it? Hmm, maybe. $160K in cost is just about what you'd have to add to do the step up to the 690, maybe slightly less. I'm sure it's similar for MU-2's. Like you said, could be an alternative for someone who is comfortable with his plane.
_________________ Without love, where would you be now?
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Post subject: Re: The verdict is in.....MU-2 Posted: 08 Jun 2016, 20:44 |
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Joined: 06/09/09 Posts: 4438 Post Likes: +3304
Aircraft: C182P, Merlin IIIC
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James, did you see anything about a temp compensation to the OAT guage reading?
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Post subject: Re: The verdict is in.....MU-2 Posted: 08 Jun 2016, 22:58 |
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Joined: 08/03/10 Posts: 1561 Post Likes: +1809 Company: D&M Leasing Houston Location: Katy, TX (KTME)
Aircraft: CitationV/C180
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Username Protected wrote: James, did you see anything about a temp compensation to the OAT guage reading? Haven't been to the airport yet. Will check this weekend.
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Post subject: Re: The verdict is in.....MU-2 Posted: 09 Jun 2016, 00:24 |
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Joined: 12/03/14 Posts: 20444 Post Likes: +25718 Company: Ciholas, Inc Location: KEHR
Aircraft: C560V
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Username Protected wrote: I don't think I could get much of that back out of it if I needed to sell it. I feel pretty safe in my plane for the money I have in it. Sell F for $X, add $160K to that for "Super 1", add expected HSI costs looming on your -1, then how close to buying a -10 far from HSI are you? Quote: need to stop thinking about it.... You never will. :-) Mike C.
_________________ Email mikec (at) ciholas.com
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Post subject: Re: The verdict is in.....MU-2 Posted: 09 Jun 2016, 00:27 |
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Joined: 11/09/13 Posts: 1910 Post Likes: +927 Location: KCMA
Aircraft: Aero Commander 980
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Username Protected wrote: I'd love to make my plane a 285-290 knot plane. Dumping $160k into to do it, not so much... I don't think I could get much of that back out of it if I needed to sell it. I feel pretty safe in my plane for the money I have in it. need to stop thinking about it.... You would be better off moving closer to the airport!
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Post subject: Re: The verdict is in.....MU-2 Posted: 09 Jun 2016, 01:29 |
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Joined: 12/17/13 Posts: 6652 Post Likes: +5960 Location: Hollywood, Los Angeles, CA
Aircraft: Aerostar Superstar 2
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Username Protected wrote: I'd love to make my plane a 285-290 knot plane. Dumping $160k into to do it, not so much... I don't think I could get much of that back out of it if I needed to sell it. I feel pretty safe in my plane for the money I have in it. need to stop thinking about it.... No you could not get your money back. But, it's also cheaper than an upgrade (maybe). So it depends if you plan on keeping it and making it your forever plane, which, is not often the case… 
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Post subject: Re: The verdict is in.....MU-2 Posted: 09 Jun 2016, 08:59 |
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Joined: 08/03/10 Posts: 1561 Post Likes: +1809 Company: D&M Leasing Houston Location: Katy, TX (KTME)
Aircraft: CitationV/C180
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Username Protected wrote: I don't think I could get much of that back out of it if I needed to sell it. I feel pretty safe in my plane for the money I have in it. Sell F for $X, add $160K to that for "Super 1", add expected HSI costs looming on your -1, then how close to buying a -10 far from HSI are you? Quote: need to stop thinking about it.... You never will. :-) Mike C.
I wouldn't call 1200 and 1400 hours looming. For most that's 10 plus years. No real options on -10 mu2s right now unless you go Solitaire which is not in the budget.
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Post subject: Re: The verdict is in.....MU-2 Posted: 09 Jun 2016, 15:30 |
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Joined: 12/03/14 Posts: 20444 Post Likes: +25718 Company: Ciholas, Inc Location: KEHR
Aircraft: C560V
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Username Protected wrote: ... in the meantime, try Crown Royal, sex or Ativan. All three can occur, often in that sequence. Mike C.
_________________ Email mikec (at) ciholas.com
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Post subject: Re: The verdict is in.....MU-2 Posted: 09 Jun 2016, 15:32 |
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Joined: 12/03/14 Posts: 20444 Post Likes: +25718 Company: Ciholas, Inc Location: KEHR
Aircraft: C560V
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Username Protected wrote: I wouldn't call 1200 and 1400 hours looming. Sorry, didn't know how far away they were. You seemed to be already planning for it based on previous posts. Mike C.
_________________ Email mikec (at) ciholas.com
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