- Jun 27, 2015
- capital district NY
I disagree. A 65p aircraft engine has a lot more cooling fin and mass than a VW. The VW is heat dissipation limited. While a good pilot can manage the VW with two people the average ham handed 25hr a year at most pilot is likely to have problems. Very likely. It is better to outfit the plane with an engine that can dissipate the heat more efficiently for two people especially if the two people care about each other and the pilot is low on time.My opinion: With enough wing and attention to weight, a large VW can safely fly 2 people. Folks safely fly in Sonexes with two aboard all the time (and receive instruction like that, with a LODA, etc). Sonerai IIs and many other VW 2 place aircraft do it, too. I'm not saying that the Sonex is perfect for this, frankly for the mission of the modern VP 2 I think you'd want appreciably more span than a Sonex or Sonerai to give better climb and to demand less of the engine. Probably 26-28 ft span, maybe 100sf.
Lots of two place planes used to be produced and certified with 65 HP engines. A 2180cc VW engine can give 75 HP reliably for TO and climb. Sure, the prop will be shorter than what a C-65 can swing, but at typical climb speeds the 10 additional ponies will about make up for the difference in prop efficiency.
This is to be a modern Volksplane right? Assume 70-75hp for TO and 65HP in cruise and the engine will live a long time.
Sure, make allowances for other engines, folks may prefer them, may need em for high DA operations, etc. (If you can fit an upright Suzuki in there it will save money compared to a laid down one).