Sport 40 Running problem

[Douglas P Shepherd]

Lets Check to Angle of attack. Get a a 24 inch Level or something that you can use the is true from one end to the other. Turn the hull upside down and take you level and place it on the back edge of the left riding pad. Take the other end and center line of shaft line around the center of were you prop hub would be.. The left side needs more angle than the right side so We are looking for about 4.5 to 5.o deg. So go 3.0 inches from the back of the pad forward and take a measurement, There is .017 pure deg in one inch so .017 x 4.5 deg = .0765 x 3.0 inches forward =.229 .So at the 3.0 inch mark we are looking for a number around a 1/4 of a inch. If it is less than that you have found your problem Do the same on the Rt side should be around 4.0 to 4.5 use same math Good luck Doug Shepherd

 

[Samuel Hagan JR]

So doing what you said with the straight edge from the prop hub to the ride pad measuring at the 3" mark.

Left pad is 1/8

Right pad is 1/8

Strut depth is 3/4" center from the bottom.

Did the same thing on a PT Boat with same Strut depth.

Left pad 1/4"

Right pad 1/4"

 

[Samuel Hagan JR]

Also the rudder is slight bent. Maybe a 1/32"

 

[Douglas P Shepherd]

Should be o.k then . I think Bert talked about a bent Prop. I would Check and make sure you have the right prop or it is not bent .

 

[glenng]

Also the rudder is slight bent. Maybe a 1/32"

You should be able to straighten that without breaking it.