Superstol powerplant options

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EchoWhiskey
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Superstol powerplant options

Post by EchoWhiskey »

Aside from the obvious Rotax entries, are there Rotax upgrades or other Powerplant options(yamaha?)to get to 130-140 hp?
Ed Whitaker
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What do you get when things don't go as planned? Experience.
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BucF16
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Re: Superstol powerplant options

Post by BucF16 »

EW, Look down at the Wild West Aircraft thread, and you'll See Steve Henry's Yee Haw aircraft 5 & 6. 5 is a Yamaha RX-1, and the 6 is a Yamaha Apex. Here is a thread for an RX-1 re-power



viewtopic.php?f=218&t=24059

Also there are a few Rotax upgrades available. Ronnie Smith has a big bore, and there are others with turbos. I'm going with the setup for the Apex from Steve Henry.
Cheers,
Bruce
Bruce Johnson Highlander # 393
"Because I fly, I envy no man on Earth"
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EchoWhiskey
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Re: Superstol powerplant options

Post by EchoWhiskey »

Hi Bruce,

I'm keen on the Yam also

Will review
Ed Whitaker
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mikepliske
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Re: Superstol powerplant options

Post by mikepliske »

Steve Henry has started his Yeehaw 7 build. It’s another Highlander. He’s going to be installing another Yamaha apex this year, but it will be turbo charged. You can check out the Yamahaf aircraft conversions Facebook group. Edge performance of Norway has received an Apex motor and will work on turbo charging it. They’ve been building turbo chargers for Rotax engines for years. Turbocharged Apex Yamaha will be 200-300hp. Mike
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kenryan
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Re: Superstol powerplant options

Post by kenryan »

I am liking the http://www.aeromomentum.com Suzuki based Aeromomentum engines. They are heavy compared to Rotax, but it seems like the http://www.aeromomentum.com/am15.html AM15 engine would be a good fit for the XL SuperSTOL airframe.
Super Stol Kit #299
GreggC
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Re: Superstol powerplant options

Post by GreggC »

Hey guys,
Any concerns using an automotive engine screaming at 5800 / 6000 RPM continuous ??
An average automotive engine lives between idle and 3000 RPM.
Im leaning towards the Titan X340.
Gregg
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BDA
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Location: Kenai Alaska

Re: Superstol powerplant options

Post by BDA »

Most auto conversions are too heavy for Ss or Highlander

To answer the question - auto conversion hp rating will be at max rpm

Only use max rpm for takeoff.

If you want the same motor reliability you have in a car, you have to run at the same rpm.

So you must produce enough hp at 2,000 rpm for cruise flight - to get the same engine reliability.

If you are ok with more frequent engine rebuilds then more RPM is OK.
SuperStol XL Alaskan With Titan 340
N331AK. Shawn Taplin
Wing extensions,Symetrical Airfoil tail ribs (NACA 21)
Mods in progress: Heavier struts, Double slotted flaps
Goal: 15mph no wind
AV8R Paul
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Re: Superstol powerplant options

Post by AV8R Paul »

Edge performance make a really nice Rotax Conversion. They take a 912ULS and put on a Furl Onjector system and a Turbo charger. It puts out something like 156 HP.
Bad Ass Powers Sports is the North American distributor.
http://badasspowersports.com
AV8R Paul
Certified Light Sport Repairman LSRM-A
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