SailNet Community - View Single Post - Could 27 hp fit here?
View Single Post
post #15 of Old 12-11-2012
Senior Member
dabnis's Avatar
Join Date: Jul 2007
Location: Truckee, CA
Posts: 8,771
Thanks: 2
Thanked 116 Times in 114 Posts
Rep Power: 9
Re: Could 27 hp fit here?

Originally Posted by dabnis View Post
For starters you could run a course with a GPS and compare it with the projected hull speed, taking into account how dirty the bottom and/or prop is.

After that you could tow something like a small drogue to try to simulate head wind and/or heavy chop and see how much the speed drops off. If that cuts the towing speed a lot, maybe by a third or half, maybe it doesn't have as much thrust as you want. Perhaps comparing the numbers to your previous boat might give you a starting point.

Not very scientific, but it would be a place to start

Paul T
Forgot this, the Beta specs show 3,600 RPM. If you can,t get close to this the prop may be over pitched or dirty. Might be good to have a diver do a hull and prop cleaning before any testing?

betamarine - Engine View

Paul T
dabnis is offline  
Quote Share with Facebook
For the best viewing experience please update your browser to Google Chrome