RE: Who makes the powerhouse engine these days?
that YS 70 is a great engine. it would be nice ith YS made a 20 or 30 four cycle lol. just think House of balsa 1/12 scale warbird with a YS 30 FS turning a 8x10 prop at 16,000. fly these small planes on a 400 foot course at 150mph lol can you say intense.....