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 Post subject: Turbo Normalized Baron
PostPosted: 26 Nov 2008, 21:05 
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My C-55 (IO-520's) is turbo-normalized by Hugh Evans, and since he finished it on 9/1/08 I have been beside myself with joy.

Take a gander at this:
Gross weight increase to 5,700 lbs.
(Translation: 6 ea 200 pounders and full fuel)
Single engine ceiling increase to 16,000'.
No change in cowling or nacelle mold lines.
Sea level manifold pressure to 23,000'.
And the one you've been waiting for: Cruise at 220KTAS.
Don't believe it? Look at my track log on Flight Aware (11/10/08-N211DS)

Hugh can also turbonormalize IO-550's....I can't imagine what they would do.


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 Post subject: Re: Turbo Normalized Baron
PostPosted: 26 Nov 2008, 21:22 
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Location: Walterboro, SC. KRBW
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Got a link to his company or any more information?


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 Post subject: Re: Turbo Normalized Baron
PostPosted: 26 Nov 2008, 21:29 
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Company: Walker Road Chiropractic
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Aircraft: 20 types and growing
Hugh came out and gave a presenation at our club recently. He is a storehouse of knowledge and has been involved in so many neat projects. His Baron project is top notch and very well thought out for efficiency. Did you know he did some work for Aerostar right before Ted Smith's son sold out to Piper? Smith and Aerostar had been working on putting the IO720's... that's right the 400 hp 8 cylinder monsters onto the Aerostar. There is a test mule still out there somewhere, I'd love to see that! His work proved that the 350 hp turbocharged Lycomings were a much better alternative.

Edit: Jason, Hugh's company is Merlyn Products, their website: http://www.merlynproducts.com/

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 Post subject: Re: Turbo Normalized Baron
PostPosted: 27 Nov 2008, 09:27 
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Location: CMB7, Ottawa, Canada
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What king of cost are we talking for the STC installed?
are the engines running warmer than before?

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Pistons engines are for tractors.

Marc Bourdon


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 Post subject: Re: Turbo Normalized Baron
PostPosted: 27 Nov 2008, 09:42 
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Cost was 50-ish. I had considered installing IO-550s, which would have cost 100++, but the turbos were definately the way to go....much more performance for half the money.

Temps averaging 1400 egt and 350 cht, at 100 rop, usually 16 gph at 24"/2400. Hugh says I could lean it some more if I want, but I don't want to.


Last edited on 29 Nov 2008, 17:29, edited 1 time in total.

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 Post subject: Re: Turbo Normalized Baron
PostPosted: 27 Nov 2008, 13:01 
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Funny that there are suddenly 3 different options coming available for turbonormalizing a Baron. Machen, Tornado Ally and Hugh. Should be interesting.

Mike


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 Post subject: Re: Turbo Normalized Baron
PostPosted: 27 Nov 2008, 15:47 
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Mike-

Hugh is apparently the only one actually selling them. TAT still working on their's. Can't find anything on Machen.


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 Post subject: Re: Turbo Normalized Baron
PostPosted: 27 Nov 2008, 17:05 
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Mike, you really should meet Hugh at Merlyn. He's one of a rare breed that is more concerned with engineering perfection than profiteering. My guess: as his order book fills, the price will have nowhere to go but north. If you're serious, maybe you need to get in sooner than later. Quality of engineering is outstanding.

-Keith


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 Post subject: Re: Turbo Normalized Baron
PostPosted: 27 Nov 2008, 17:10 
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Username Protected wrote:
Wait a minute here. :bat:

50k to TN a Baron. That's two engines? He didnt just jerry-rig the heater blower with some ductwork, I assume?

Why is the TAT upgrade 50k for a SINGLE then?

Hugh has done his engineering work to provide a cost efficient solution for turbonormalizing the Baron. He's avoided needing to use expensive controllers and intercoolers. For someone seriously considering doing this I'd recommend calling him up, or better yet visiting his shop in Spokane.

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 Post subject: Re: Turbo Normalized Baron
PostPosted: 27 Nov 2008, 19:40 
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No intercoolers? Did he invent new physics?


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 Post subject: Re: Turbo Normalized Baron
PostPosted: 27 Nov 2008, 19:50 
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Username Protected wrote:
No intercoolers? Did he invent new physics?


His system testing showed no significant improvement until over 21,000 feet, and even then the temp reductions weren't worth the weight/added complexity for service/installation. More modern high efficiency turbochargers are not like the older units, he certainly has enough experience with both.

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Dr Zane Gard
Past President 2013
Columbia Aviation Association
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 Post subject: Re: Turbo Normalized Baron
PostPosted: 28 Nov 2008, 08:17 
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TAT is $45K no options.


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 Post subject: Re: Turbo Normalized Baron
PostPosted: 28 Nov 2008, 20:04 
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Company: Lauderdale Millwork Inc.
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Aircraft: ex- baron 58 owner
The weight increase is interesting. With no more HP than "normal" for take off (I'm assuming)why would they give the weight increase. I thought max gross weight was based on single engine climb performance. John L 4545M


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 Post subject: Re: Turbo Normalized Baron
PostPosted: 28 Nov 2008, 22:05 
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Username Protected wrote:
The weight increase is interesting. With no more HP than "normal" for take off (I'm assuming)why would they give the weight increase. I thought max gross weight was based on single engine climb performance. John L 4545M



John-

For flight testing purposes, FAR 23.67(c) requires that the rate of climb be measured at 5,000 ft with the critical engine inoperative and feathered, flaps and gear up, and cowl flaps open. Since a normally aspirated engine develops less than sea level manifold pressure at this altitude, it stands to reason that a turbo normalized engine would have a higher certified gross weight.

-Keith Griggs


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 Post subject: Re: Turbo Normalized Baron
PostPosted: 29 Nov 2008, 10:30 
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oops. forgot about the 5000'. That would certainly make a difference. I would love to see one of these installations.


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