Trail edge of Boat

[Bill Burruss]

Hi,
Still making progress fairing the bottom. Usually sand the previous work, then mix a small batch of expoxy/mirco ballons using plastic spoons and a yogert cup, then skim coat the ugliest areas. Was looking at some old posts and came across a snow goose where the where bottom edges of the transom meet the hull are square (not rounded over). Anyone know what the benefits of this are? Now would be the time to change that if it is worth the effort. Hope to finish the fairing this weekend and paint the bottom next weekend.

[strike][/strike][strike][/strike]
Thanks,
Bill

 

[Huntindave McCann]

Bill, I squared the trailing edges on my BBIII when I added wedges. The sharp edge creates a bit more lift from the wedge because the water is not following the radius up around the corner.
A sharp edge forces the water to break free cleanly from the sharp edge.
If you search my recent posts, you can see pic of what I did. I am also going to credit the sharp edge with a slight increase in top end speed,although I have no way to prove that. I know my speed increased but pin it directly to the sharpness of the edge.

 

[Bill Burruss]

Dave,


Thanks. Nice job on the BBIII. Went ahead and built up the edges on the Cackler tonight and will sand them square tomorrow. Had done than on my BB2, but could not remember why or being able to attribute anything to them being square. Guess boat builders here can't leave "good enough" alone!


Bill