KTS vs MPH - Which one do you use? 

1.152’s been stuck in my mind for over 40 years, so conversion is easy, as long as you have a calculator handy as one gets older 😉

That seems pretty close to mine. Just a bit slower but you have larger wheels and no wheel pants. Also, I doubt our prop pitch is set exactly the same.

@@KitplaneEnthusiast All true. The biggest difference was slow flight and stalls.

I do not have VG's. I don't feel that I need them. Also, it makes cleaning the wings a real hassle.

I use Knots and Celsius -- all navigation is based on it. I leave statute units to ground vehicles

Definitely North up!

HAHA that's a great point!

Of course, the reverse of that is most homebuilders want to use mph because the numbers are bigger and that makes their plane sound faster! Ha!@@KitplaneEnthusiast

When I first built this airplane, I had it in MPH and then switched it to KTS for the reasons you list (weather, ATC, charts, etc..) but everyone I talk to seems to reference mph. So I switched it back to mph just to be on the same page. It's really easy in the Dynon to switch it back and forth.

@@KitplaneEnthusiast I think it is because there are not many homebuilders here that most of the GA pilots talk in Kts, the LSA type can be a bit a bit mixed but most will convert to Kts when talking about their aircraft.

I would choose the 118hp UL Power.

@@KitplaneEnthusiast Fuel economy outweighing better performance?

Yes and a slightly less expensive engine. With the 118hp you can use the cheaper 87 octane car gas. I have to use premium in mine. The only draw back is maybe a slightly less climb rate, but this plane climbs like crazy anyway.

That’s interesting Scott. I’m not sure if the Dynon pitot would give different readings. Next Zenith Flyin let’s fuel our airplanes the same and let’s fly both and compare!

@@KitplaneEnthusiast Sounds good…👍

Knot is a nautical mile per hour - certainly non-SI unit so in that regard as much “stuck” in the imperial system as are mph.

@@walterrawdanik8077 aviatiion is a connumdrum ... There is a technical reason why it is still AM though. The USA is still stuck with the imperial system mainly although funnily enough the space race is now in KPH and metres for altitude...I just think the USA just wants to be different in some areas.

@@walterrawdanik8077 A nautical mile relates directly to one minute of latitude, so there is no need to reference any other scale regardless of the map you are looking at. In marine navigation nautical miles and knots are the standard because it makes celestial navigation directly related to the angle scale on a sextant. One minute of angle on a celestial sight equals one nautical mile! Aviation navigation was founded on marine practice and for most of the 20th century international flights where navigated by sextant sights. So, the vast tradition is aviation navigation has been in nautical miles and knots. ONLY in America has the use use of statute miles persisted! Just like the backward thinking of Americans who refuse to adopt the metric system even though ALL "Common usage" units are now defined by reference to the metric system! In Australia I grew up with Imperial Units, Pounds.Shillings and Pence, and the metric system then transitioned to dollars and Cents and the metric units. I learned navigation on yachts in Degrees minutes and decimal minutes ( or seconds, I learned aircraft navigation in nautical miles and Knots. The Aircraft i fly have their flight manuals in Knots, so that is what I use. For the life of me i can't see any reason to use MPH just because that is what Americans still use in their cars! The units really don't matter, but why risk the confusion created by different units? Smart pilots use Nautical miles and knots, because that is what NAVIGATION is based on!

Perhaps you’d want to elaborate on how using mph is “lazy”? To me, it’s lazy to leave an open comment calling people lazy and not back it up with any data or facts.