How heavy is the Yamaha Apex installation? Get Outlook for Android<https://aka.ms/AAb9ysg>
________________________________ From: KRnet <[email protected]> on behalf of Zachary Martine via KRnet <[email protected]> Sent: Tuesday, August 12, 2025 9:40:29 AM To: KRnet <[email protected]> Cc: Zachary Martine <[email protected]> Subject: Re: KRnet> 2L VW/ Turbo When price is no object, the 916is and 3 blade airmaster prop with beta & reverse is always an option. My hangar neighbors newly completed kitfox climbs at over 2500fpm. But that would be well past the frugal flyer that the kr enspirits. ~90k installed for that combo. There is always the yamaha apex w/ teal skytrax gearbox and an airmaster prop. ~25k for 180hp or turbo it up to 360hp. All about risk to performance tradeoff, at that point a lancair is more your flavor. On Tue, Aug 12, 2025, 9:04 AM Larry Flesner via KRnet <[email protected]<mailto:[email protected]>> wrote: On 8/12/2025 1:58 AM, tiekie bernardus wrote: Good day. Thank you Larry and John for your contribution about the turbo. I agree will all that was said, although it will be nice to have the extra speed and power as I'm a bit of a speed junkey. Regards Tiekie ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ It was suggested that a "constant speed" prop would benefit a turbo installation and that is true but a "constant speed" (variable pitch) propeller would benefit any type of engine, gas, diesel, turbine. There is benefit to a turbo with a fixed pitch prop in that the engine is capable of producing more HP on takeoff and climb and continue to produce rated HP at altitude. It would require a prop with more pitch / diameter to handle the additional HP and additional modifications to the engine / airframe to dissipate the engine heat from from the extra power generated. Many modern automobiles are going to smaller turbo-ed engines to increase mileage numbers but not without reliability concerns. Design out as many failure points as possible and have a disciplined operating procedures. Many do so successfully. Larry Flesner -- KRnet mailing list [email protected]<mailto:[email protected]> https://list.krnet.org/mailman/listinfo/krnet
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