912 uls vs Viking HF110

[chefwarthog]

And why not a Honda injection Vikink HF110 instead of a Rotax 912 ULS???
Go see for your self at @....and let me know.




http://www.vikingaircraftengines.com/Tech.html

http://www.youtube.com/watch?v=1bj7P7ZihEc

[runwayrex]

The Viking engine looks very interesting to me too. I wonder how well it will fit inside a round cowl. That big radiator might be a problem. I won't buy an engine unless the Mcbeans have engineered a firewall package for it.

In my search so far, the 912's negative side is the high cost and dual carbs. The Rotec leaks too much oil and there's no liquid for the cabin heat. On the plus side, the Viking has Honda engineering, reliability, liquid cooling, 110 horsepower, and a lower price tag than the other two.

I keep waiting for John or Debra to call me so I can order my new Super Sport!

Rex Phelps

[chefwarthog]

What I like from the Vikink, is that it seem neat with no mess of pipe and tubing and no cab heating prob. like the 912

Not that the Rotax is not a good engine, but it's tag price is the one of the all Honda Fit and I need just the engine.

If the Kit Fox team make a firewall kit for this engine, I will consider that choice very seriously.

Look at the pictures......

[1SeventyZ]

That is seriously cool. Everyone knows that Honda 4 cylinder engines are synonymous with performance and reliability, so to see someone get behind this conversion is great. Part availability for the core should be excellent, but all the auxiliary stuff (heater, exhaust, etc) is questionable and dependent on the success of Viking.

I don't see where the gearbox comes from. Are we to assume it's poached from the marine outboard installation?

[chefwarthog]

The gearboxs is from Viking with a ratio of 2.33:1
This engine hase the same RPM has the Rotax, with a smaller weigth.

Honda instal this motor in the formula Ford series racing, and in there outbord marine engine, so that why, this mecanical can sustain a hight RPM

I found another video that explain more in detail from Sun&Fun 2010...........

Excuse my english but it make me practise

http://www.youtube.com/watch?v=cdE33...eature=related

[szicree]

I'm sure the Honda core is bomb-proof but that's a very small part of the puzzle. Just about every modern Japanese four-banger will run all day because they've had about 60 years of design refinement. I doubt the same can be said of the gear drive on this conversion. It's not like this is the first auto conversion to come down the pike, and I'm sure it won't be the last. I agree the price looks attractive, but there is a reason: no track record. I'll let somebody else put the first 50,000 hours or so on one of these before I jump in.

[Andrew G]

Honda is in the middle of building their plant and launching production of their new jet and engine... perhaps they will view aviation as a good opportunity...

There are thousands of LSA's around the world, the market for fuel efficient, Rotax-ish engines is good... maybe Honda will enter the normally aspirated engine market too and create some much needed competition. Honda makes scads of recreational products, may as well make an engine for the LSA market too...

Much better pedigree than Rotax, which, despite the newness of Rotax's design vis their 2 stroke snowmobile engines... Honda's 4 stroke quality and history are literally legendary in many different applications. For Honda to bridge the gap to successful aviation engines shouldn't be that difficult...

[Dorsal]

http://world.honda.com/news/2003/c030304.html

[Squirrelfox]

Report from the front: I'm just a few miles south of Viking and made a trip up there a cfew weeks back to look things over. A few observations regarding the thread.

Their operation is small but professional. Testing like the youtube video is on going. THe bollard thrust test was interesting but from a pure testing environment...the variables were not controlled so a little apples and orange debate is still out there. I liked the smoothness in sound as compared to the Rotax..Not sure of the value on that statement.

I just don't see Honda entering the LSA or small GA engine market. They live off of economies of scale while limiting their liability...Aviations presents too much risk in the "backyard" market. I think it will up to entrepeneurs like Viking to provide our niche. A while back there was an engine based on the Harley motorcycle lineage..I believe Harley aggressively put a stop to the marketing. I hope that Honda does no such action regarding Viking as I truly admire the vision...There are always engineering difficulties and only time will tell if Eggenfeller has hit the mark. I think we all hold a bit of gratitude for all the conversion engine folk as they collectively bring innovation.

I agree that Rotax is the comparison leader. Judging from the reports..they are not "bulletproof" however. PSRU failures and carb issues. I'm not convinced that the cost is not a false sense of security, I will admit that a widespread engine model brings improvements and reliability in the long run...Any thoughts.

[chefwarthog]

I don't want to do the Deveil's layer, but did the Wright brother in 1903 did there first flight with an automotive engine in aluninium or not. No, I know what you mean ¨szicree¨ but do the Rotax engine is so much reliable. I know that Vikig is not new to modify automotive engine in to aircraft like the Subaru, does any body as realistic fact on those companies?????

Thanks, Eric