Geoff13 Posted January 19, 2015 Share Posted January 19, 2015 There is an opening there about one's abilities off the bike rather than the quality of the machine, but being a true gentleman I shall leave that one alone. 1 1 Link to comment Share on other sites More sharing options...
Soleair Posted January 20, 2015 Share Posted January 20, 2015 I find the V4's and Vtwins for that matter functional in an Agricultural type of a way. Can't comment on Kwakker V4's. But have a go on a VFR & see what you think then. Bruce 1 Link to comment Share on other sites More sharing options...
Old Koreelah Posted January 20, 2015 Share Posted January 20, 2015 Old Koreelah were you ever asked by your wife to go bike riding after you had both gone to bed? Alan. Nope...(and she wasn't the wench in the story). Link to comment Share on other sites More sharing options...
Tucano Posted January 20, 2015 Share Posted January 20, 2015 $US25K is about $A35 with freight and GST I think this is for the US market Link to comment Share on other sites More sharing options...
geoffreywh Posted January 20, 2015 Share Posted January 20, 2015 what kwacker V4? Link to comment Share on other sites More sharing options...
Geoff13 Posted January 20, 2015 Share Posted January 20, 2015 what kwacker V4? Very good question. I was actually referring to the Yamaha V4 Venture, about vintage 2008. I do not know why I mentioned Kawasaki as I have never ridden a Kawasaki in my life. I have been researching them though for information on their radiators for a project that I am working on and may have had them in my mind when I wrote that. My apologies for any confusion. Link to comment Share on other sites More sharing options...
geoffreywh Posted January 20, 2015 Share Posted January 20, 2015 The Yamaha V4 is a thing of beauty.... Link to comment Share on other sites More sharing options...
Geoff13 Posted January 20, 2015 Share Posted January 20, 2015 No the Yamaha V4 is a source of vibration and noise. As I said functional in an agricultural type of way. The Honda Flat 6 you can sit a wine glass on one of the heads and rev up and not spill a drop. Now that is a thing of beauty. 1 Link to comment Share on other sites More sharing options...
Pilot Pete Posted January 21, 2015 Share Posted January 21, 2015 Try a Kawasaki inline 6 cyl Z 1300 engine for size. Link to comment Share on other sites More sharing options...
Jmbb74 Posted January 25, 2015 Share Posted January 25, 2015 Another video with better camera audio. Link to comment Share on other sites More sharing options...
Kyle Communications Posted January 25, 2015 Share Posted January 25, 2015 What is your takeoff speed?...it seems to be very fast....unless its the camera playing tricks Link to comment Share on other sites More sharing options...
Kyle Communications Posted January 25, 2015 Share Posted January 25, 2015 Motor sounds nice...certainly humms along nicely Link to comment Share on other sites More sharing options...
DGL Fox Posted January 25, 2015 Share Posted January 25, 2015 Looks to me like the video is playing at 2 times the normal speed ?? David Link to comment Share on other sites More sharing options...
Jmbb74 Posted January 25, 2015 Share Posted January 25, 2015 Hi all, it's just a optical illusion because of the camera position and wide angle. This mornings speed had just hit 60knts at rotation. Link to comment Share on other sites More sharing options...
nig71 Posted April 20, 2015 Share Posted April 20, 2015 Viking looks really interesting at face value but has anyone considered the honda civic diesel as a choice for aero conversion. It has an aluminum block, develops nearly 110hp from 3000rpm (according to one chart I looked at) could be chipped to 150hp, possibly has the same bolt patterns for civic petrol gearbox (don't really know;just guessing) for a bolt up of PRSU. On another note, I wonder if the powers that be could be leaned on in the interests of developing a diesel aircraft engine to increase the MTOW of diesel powered LSA to the same as amphibious LSA. Now I am just a learning pilot with a mere ten hours under my belt and really haven't done much with weight and balance calculations so be gentle with me but it seems to me that an increase in engine weight wouldn't stuff with COG calculations because the weight is where most of the weight in an LSA is located anyway. A heavier engine could also be shifted aft a bit to compensate as well. The fuel weighs more by specific gravity but the engine uses less so there could be weight savings here. Or at least the option to put less on board for two up operations is available. 2 Link to comment Share on other sites More sharing options...
fly_tornado Posted April 20, 2015 Share Posted April 20, 2015 The problem with any auto conversion is that no one designs airframes for a big fat nose weight. Link to comment Share on other sites More sharing options...
nig71 Posted April 21, 2015 Share Posted April 21, 2015 What I only am just realising is that it seems if you have a light engine you shift it forward to adjust COG . Much like on a turboprop. Light engine; long cowl. Plus which is there an advantage to a tail wheel aircraft and make the main gear take the load. Right at the moment I am a bit fascinated by the Just Highlander Superstol. I don't think its gear would have much problem taking extra load. A diesel would be a great fit for me on a farm. According to Honda the diesel has 58% of the economy of the petrol. So some weight could be gained on fuel load. Link to comment Share on other sites More sharing options...
kasper Posted April 21, 2015 Share Posted April 21, 2015 Well auto conversion with redrive nearly always comes at a weight penalty to an equivalent aircraft specific engine. Look at the SMART engines converted to aircraft use by FlyEco - one a turbo diesel and the other turbo petrol - handy that they are 80 and 100hp as they compare to rotax 912 nicely. In both cases the engine mass on an 'equivalent' basis is greater in the auto conversion ... and looking at the fuel burn of the rotax the rotax gets hours of fuel for the same installed weight of the auto-converion engine. Short of the auto-conversion engine being cheap as chips (they are not) the sums do not add up. So going diesel at 80hp is more about the availability of jetA and the diesel injection and all the nice automotive stuff rather than the installed mass ... 80hp diesel ecofly is actually more weight that the 3300 jab and is close in weight to the continental O200 So basically the weight on this 80hp diesel does not kick in as fuel mass saving due to lower burn until the 6th hour of flying starts ... not a lot of microlights run this long in a single leg and even training organisations. 1 Link to comment Share on other sites More sharing options...
facthunter Posted April 21, 2015 Share Posted April 21, 2015 Normal diesel will wax up at about minus 4 C. Avtur would be the only safe fuel unless flying low in the tropics. Nev. Diesels are heavy because they work at high pressures and loads. They have been built successfully in the past, and there have been Diesel Radials that set endurance records. I think Packard built one in the early 30's. for that purpose. Junkers had the Jumo in some bombers. They are 2 stroke which you can pretty much forget these days as they are more polluting than desired. Nev Link to comment Share on other sites More sharing options...
bexrbetter Posted April 21, 2015 Share Posted April 21, 2015 It has an aluminium block I remind you that 1kg of aluminium weighs exactly the same as 1kg of cast iron. No one knows the weight of the Honda diesels. The 2.0 Subaru flat 4 diesel weighs 170kgs and that is a lot more than many cast iron block 4 cylinder engines I can name. According to Honda the diesel has 58% of the economy of the petrol. So some weight could be gained on fuel load. So maybe they weigh the same at liftoff, but when you land with low fuel, the diesel is still heavier. Then there's the torsional vibrations. I'm not against diesels but if they made sense people would be using them. Link to comment Share on other sites More sharing options...
fly_tornado Posted April 21, 2015 Share Posted April 21, 2015 cessna 172 diesel is becoming more popular bex, these are based off the MB 2.0 engine https://www.youtube.com/watch?v=R06D5bDTMZM Link to comment Share on other sites More sharing options...
Nobody Posted April 21, 2015 Share Posted April 21, 2015 A viable aircraft diesel might actually be a 2 stroke. You give up some efficiency for higher power output for the weight these guys have developed an engine and it has flown in a few types of aircraft. There is one flying in an RV-9 in the USA http://wilksch.net/ Link to comment Share on other sites More sharing options...
bexrbetter Posted April 21, 2015 Share Posted April 21, 2015 cessna 172 diesel is becoming more popular bex, these are based off the MB 2.0 engine I know them well. So you reckon 150kgs and $100,000 (installed) cost is ok? A viable aircraft diesel might actually be a 2 stroke./ I'm hearing some good things about the WAM, not sure of the cost etc though. Still 130kgs it's getting a bit much for our typical sized craft. Link to comment Share on other sites More sharing options...
SDQDI Posted April 21, 2015 Share Posted April 21, 2015 Is it doable to have a lightish (equivalent to 100-150 hp) turbo prop that could run on either diesel or jetA1? I am not technically savvy on the possibilities of this but I would've thought something that could be run on farm diesel in the summer and jetA1 in the winter or when traveling would be a goer and especially if it was put in something in around the 750 kgs MTOW it would be well suited to rural applications. As a separate silly question. (Ok maybe a couple/few not just one more) Why don't we see small turbo props in light touring aircraft? Is it an expense issue? Wouldn't their reliability be better than a piston equivalent? Link to comment Share on other sites More sharing options...
Nobody Posted April 21, 2015 Share Posted April 21, 2015 Still 130kgs it's getting a bit much for our typical sized craft. To be fair that weight includes a constant speed prop, governor, radiators, starter, alternator, oil and coolant. It is also for an engine that has a turbo and so will deliver its rated power at altitude. 1 Link to comment Share on other sites More sharing options...
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