Model Boat Mayhem

Mess Deck: General Section => Model Boating => Topic started by: rory on July 27, 2011, 11:15:57 am

Title: Direction of engine rotation
Post by: rory on July 27, 2011, 11:15:57 am

I am looking to buy a Zenoah for a single screw monohul. The ones im looking at are tuned and for the same spec the counter clockwise rotating engines are more expensive than the clockwise rotating ones. Does it matter which i choose for my boat? Are prop options an issue for either engine rotation?

Title: Re: Direction of engine rotation
Post by: treeboa on July 27, 2011, 12:39:38 pm

one single screws it does not matter as long as you get the suitable prop

Title: Re: Direction of engine rotation
Post by: w3bby on July 27, 2011, 03:17:53 pm

Buy a standard rotation - more propeller choices, no special flex required, all around easier to deal with.

Title: Re: Direction of engine rotation
Post by: CGAux26 on July 28, 2011, 03:07:29 am

A Zenoah is a racing engine, right?  From what little I know, at least here in the US, race boats run clockwise around their course.  So a prop that turns CCW as seen from aft creates prop walk (net side thrust) that helps the boat turn right.  Check with someone with race boats to confirm this.