I am thinking about buying a boat made by trojan. This boat was made in 1978 but it has a brand new engine. Just by looking underneath it, the propeller seems somewhat small for this boat. The boat is approxametly 26 feet, but with a big cabin. I was... Read More

We are given two small axle rods about 2 1/2″ inches long and 4 plastic wheels about an inch in height , a small motor, and two 1.5 volt Duracell batteries and the only requirements is it has to run with a propeller. We’re not allowed to buy... Read More

Purchased a 17 tooth spline propeller unknowingly for my volvo penta motor that is a 19 tooth spline. Trying to figure out if there is a way I can still use it. Posted by Charlie B  Read More Ø

Where can I find information on a vertical bladed turbine used to power a sailboat. It runs a set of gears powered by the vertical blades and transfers power to a propeller. Any ideas out there where to find this? Posted by aaron b  Read More Ø

Hey folks, I am looking for outboard motors, I was advised the older models had the horsepower measured and the flywheel…now they measure HP down at the propeller..what YEAR did this start happening? Ive got my eyes on a 25HP johnson from 2000..whuddya... Read More

A boat moves through the water with two forces acting on it. One is a 1500 N forward push by the water on the propeller, and the other is an 1400 N resistive force due to the water around the bow. (a) What is the acceleration of the 1400 kg boat? (b)... Read More

I’d like to size a tire and wheel combination but do not know how to read the existing measurements. Its a 1800 static weight for main wheels and 450 static weight for nose wheel in a tricycle config. Single engine propeller craft seating 4 ppl. Please... Read More

We have an inboard engine and the prop got bent today. We have taken off the pin and the nut and the end of the propeller, but instead of being able to spin it off, it just freely rotates. What else has to happen to get it off? Posted by The GMC  Read More Ø

I was flying in a non jet plane operated by Calgon yesterday and was asked how high I went, and I could not remember if it was 1200 or 12,000 feet. Most likely the second, but I would like to know. to be more specific, it was a 2 propeller, sat 80 ppl,... Read More

Pros/Cons of each Safety, for overnight travel, fishing. Maintenance. Is a jet boat worth the extra money? I’m not interseted in racing at all .. but i dont want it to be slow … I am planning to take trips of 50 KM plus on them (one way)..... Read More