If i remember correctly, the motor with associated supplies is 120lbs the prop is about 26lbs including hub, and the gearbox is about 8lbs for ~155-170lbs installed. They also have smaller versions supported on the skytrax website. Aeromomentum is also an option but I've seen mixed reviews specifically surrounding the fuel rail.
On Tue, Aug 12, 2025, 9:48 AM Samuel Ajayi via KRnet <[email protected]> wrote: > 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]> 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] > https://list.krnet.org/mailman/listinfo/krnet > > > -- > KRnet mailing list > [email protected] > https://list.krnet.org/mailman/listinfo/krnet >
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