motor suggestions?

[NIL*U]

hello everyone. i am in need of some suggestions with what kind of motor to put into a new boat that i am building. i have the hull completed and it stands at about 7' 10" long and about 3' wide, hydroplane style. i am looking for a motor that will pull the boat at about 50ish maybe more. i will try to post some pictures as soon as i can. thanks for all your help in advance.

p.s. i am by no means new to r/c's but i am new to large scale with gasoline engines in them so please be frank.

[Ron Olson]

OK, I'll be frank but my name is Ron. :)
You're looking at one big engine to push that boat into the 50 MPH range! I'd be looking at small Jet-Ski engines or something out of a motorcycle. The next thing is some really big servos to handle the duties. You might have to link several of them together to get enough torque to turn a rudder otherwise find some industrial sized ones. Redundancy is something that I'd seriously look into like a 2nd receiver and back-up battery power not to mention a failsafe.

[NIL*U]

OK, I'll be frank but my name is Ron. :)
You're looking at one big engine to push that boat into the 50 MPH range! I'd be looking at small Jet-Ski engines or something out of a motorcycle. The next thing is some really big servos to handle the duties. You might have to link several of them together to get enough torque to turn a rudder otherwise find some industrial sized ones. Redundancy is something that I'd seriously look into like a 2nd receiver and back-up battery power not to mention a failsafe.

thank you for the response. i kinda figured i would be looking into something that big. so some of the options i have come up with are; a 110cc 2 stroke from a kids 4 wheeler that i have had up to 40-45 with me on it. a 49cc 2stroke pocket bike motor that i have had up to 45 with me on it(and i weigh 230lbs). i looked into some small jet ski motors but i realized that my hull in the middle does not sit in the water so i would have no place for a water pickup, am i correct in this assumption? as for servos i have 2 servos that will be power the rudder that are about the size of the average mans hand. they should do the job. also if i go with either of the 2 motors i have listed above i was going to route all the servos to be powered off of the battery pack since all of those motors will be utilizing a remote electric start. please feel free to toss back all the feedback you can! this is my first project of this size and i am kinda needing some help. thanks for all your input in advance!

[Ron Olson]

So far it's been just me replying to you, kind of surprising. You could use the Kaw motor but not the jet drive.
A pocket rocket motor isn't going to get you anywhere near 50 MPH but that is a lofty goal anyway and kinda scary if you think about it but cool anyway.