WDTM?TANSTAAFL.
WDTM?TANSTAAFL.
There aint no such thing as a free lunch.![]()
That is the main problem. Modern car engines are seemingly small and compact, but they are also heavy, and incredibly complicated. A conversion would consist of making a PSRU that is compact and light, but more problematic - a ECU for aviation use has to be made - from scratch. Using a carburetor and old fashioned ignition, these new engines would default back to how engines were 30-40 years ago, and then a type 4 would be much better option. Then, let's say you found a nice engine. The PSRU will cost anywhere from € 5-10k. The ECU will cost €5k and the engine itself maybe €5k. So you end up with a more or less good contraption costing the same as a Rotax 912, but much heavier. Look at the Viking engine with the Honda motor.I bet the motor out of one of those MINI Coopers would fit inside the type 4. YA never know!!!![]()
Some modern car engines are decently light- Subaru EJ SOHC longblock under 190 lbs. Suzuki G13 and 2.5/2.7L V6 also light. Have some good PSRU solutions for $2500-$5000 in those hp ranges (Raven. SPG-3/4 and from Autoflight for the Subarus and V6 Suzukis.That is the main problem. Modern car engines are seemingly small and compact, but they are also heavy, and incredibly complicated. A conversion would consist of making a PSRU that is compact and light, but more problematic - a ECU for aviation use has to be made - from scratch. Using a carburetor and old fashioned ignition, these new engines would default back to how engines were 30-40 years ago, and then a type 4 would be much better option. Then, let's say you found a nice engine. The PSRU will cost anywhere from € 5-10k. The ECU will cost €5k and the engine itself maybe €5k. So you end up with a more or less good contraption costing the same as a Rotax 912, but much heavier. Look at the Viking engine with the Honda motor.
Look to Raven (Suzuki) Raven Rotorcraft Redrives: Geo-Suzuki Engine Conversion for Gyroplanes and Ultralights and Air Trikes (Suzuki, Honda, Subaru, BMW) Air Trikes: Engines and Conversion Kits. for some proven lightweight engine packages in the 65-130hp range- been doing those for over 15 years.There probably are as many well operating (modern) auto conversions as there are auto engine wizards in the world wide homebuilt community. For us less knowledgeable, there are few or none commercially available true and tested packages. The situation is nothing like the tens of thousands of VW conversions flying and dozens of different engines still available today.
Yes, the current USD exchange rate would certainly hurt sales outside the US.That RAM 115A looks kind of nice, but US$ 14k is a lot at todays exchange rate. You still have to add cooling system. fuel pumps and so on (not much info on the site). We are talking Rotax 912 prices here.
I reckon the Toyota 1ZZ is the logical replacement and a step up from the G13 series. 1.8 litre, 100hp at 4800rpm (135 at 6000) decently light; complete running car engine including flywheel, starter motor, water pump, power steering pump and air conditioner pump along with drive belts = 110kgs. Obviously can get to sub 100kgs and the rpms dropped a bit after optimisation. I believe it can better the Viking by a margin.Some modern car engines are decently light- Suzuki G13