How much engine do I need?
I am looking to build my first airboat. Been lurking and reading off and on for years now, and finally getting to where I think I should do it. The boat is going to be about 20" x 40" with a flat bottom. I'm pretty sure I have all the details of the build worked out in my head, but I am not sure how big of an engine I will need. I am looking to use a 3 blade 16"x10 pusher propeller. First I am going to get the engine, mod what I need to on that and build the boat around the mounting needs of the engine. It just seems smarter/easier to go engine first. So, knowing I am looking to use the 16x10 pusher, would a 30.1cc Echo chainsaw engine be enough? I have found one locally for $50. The propeller is @ Tower hobbies, they only offer a 16" 3 blade. If 30.1cc isn't big enough, what size should I look for? Would getting a pipe for the engine help any or no? I know the tuned pipes help a lot on my Baja and make the race boat motors scream. Thanks!