Online Community of Zenith Builders and Flyers
I visited the aeromomentum.com website and found an interesting write-up by Mark, the owner of Aeromomentum. In it he discusses the engineering choices that led him to choose the line of Suzuki engines that he uses for aircraft conversion. Here's a link:
Your writings are not technical. They are for sales. You can not provide "real facts" when you are selling something. Nobody are stupid here.
How many rubber cam belts does the Suzuki engine have hidden under the plastic cover?
It is a single belt. Ready to fail way before a 2017 Honda fuel pump. And yes, the pump can be replaced every 5 years if anyone is worried about it.
Point is, every engine has failure points. Everyone knows car engines have become more and more reliable every year.
As long as you keep writing negatively about our company (because clearly you are) we will defend ourselves.
Problem with this statement is that the low lift setting is perfect for cruising and the high lift setting perfect for additional takeoff power. Why this is so is technical but Honda is not stupid and the switch to high lift is at the perfect RPM for aircraft usage. The high lift and variable cam timing is on the intake cam only and offer the possibility to have max power and great torque / efficiency and long lasting valves.
To say "I am better" is a negative approach by definition. Interesting that we never see any other highly successful engine company taking this approach in an effort to win customers. That is worth noting clearly because it should guide the proper formula for success.
Selective use of engine "facts" that don't match the actual real world application should be avoided. The Viking Honda certainly offers a redundant dual pump fuel system. Same for the electrical system if desired with two lithium type batteries.
All the while targeting just one competitor and ignoring a decade of successful application of the Viking Honda to E-AB aviation in hundreds of aircraft of various sizes and missions. This fact plainly defeats the good vs bad approach.
The remainder is not proof of "better" but rather engine design preferences that do not provide a compelling argument that your Suzuki engine is the better.
There are EIGHT excellent engine options supported on this forum. You have a good engine. Stay on track. Avoid the negative arguments. Buyers are fully capable of sorting out their ultimate preference be it Corvair or UL or Jabiru or Viking or your Aeromomentum.
Why then did you choose here to use negative language like "failure prone" when referring to the Honda high pressure fuel pump? Is that really accurate and fair? I seriously don't think so.
BTW.. I have a flying friend who is seriously considering an Aventura II. I am encouraging him to use the Aeromomentum engine and the Viking designed fuel system. Because that fuel system was designed by Viking to work well with most fuel injected engines.
I also note that Aventura (Aero Adventures) is now offering Viking aircraft engines in addition to your Aeromomentum. See Alex Rozinski's January 2019 newsletter. Not sure if this is the newer 90HP or the heavier 130HP. Obviously Aero Adventures recognizes that Viking is also doing things right.
Go high. Be positive and constructive at every step. I sincerely wish you every success.
I don't think anyone would argue seriously about the clear advantages of a direct injection fuel system on an aircraft engine, or modern variable intake valve / lift systems. But rather than discussing any of this, you are all in for a treat. The latest Aventura will fly with a Viking 130 engine. So, it will just be a good American race :)
For you to say that a can belt and it’s greased ideler pulleys are superior to the lifetime chains now used in the Honda’s and Mitsubishi engines together with hydraulic tensioning is exactly the reason that this kind of discussion is useless.
The technology will speek speak for itself as far as if one 1.5 is more powerful than another 1.5. That is the only question. Honda reliability is not on the table to be discussed.