How big of a boat can a nitro engine power? I want to make a 48" boat and don't know if i should power it will a weed eater engine or a nitro engine.
Also what size of prop should i run with either a nitro or weed eater engine. I am noob when it comes to boats.

I know in scale hydros they run a .67-1.01 nitro. Or gas like a Zen 260. I have a 49" gas cat hull that ran a 260 in it. What boat do you have?? Make and model would help.[8D]

I was planning on building the mono boat from the plans i found on http://www.modelpowerboat.com

I have seen 51" and bigger boats running with methanol burners, CMB91 being the weapon of choice. Plenty other good motors in that size range about, but they use lots of fuel, for playing around with, a petrol engine might be better.

There is a vast difference between a strimmer (weed eater) engine and a good 90 race engine. (About 5 HP in fact)

Glenn

I was planning on building a mono from the plans found on the web.
This boat will be just for fun, doesn't have to be super fast, fast is good enough if thats possible.

In the interest of disclosure, I have to begin by saying I'm a nitro bigot. Now that it's out, for a boat that size, I suggest gas. My reasons include cheaper fuel and a significantly less expensive engine.

A stock Zenoah engine will be good for 40mph in a 48" mono. I don't recommend yard equipment engines.

Ryan

What all is out there for gas engines. All i've seen is Zenoah. There must be some other ones out there.

Sikk
QD

Ryan