Need quick advice- Double oops

[IRBFishin]

Great forum. Been trollin' here for years and have always found the answers to all my questions. Prop stuff is a little different. Need an answer more specific to my set-up.

Have a 70hp Johnny on a 16ft tri-hull bass boat (bout a thousand pounds). When I bought it the guy said it had the wrong prop on it. I found some rocks on the Columbia last night and now my prop looks like swiss cheese. While I mainly bass fish, we've been getting into tubing, skiing and wakeboarding but my boat had a really hard time even getting a wakeboarder out of the water. Runs awesome otherwise (new fuel pump, lines, carb rebuilds, plugs, etc, etc).

I was told the 17" pitch was too much for pulling an adult out of deep water so I ordered a 13x11 prop (evinrude.com has it as an option for my motor). Now I'm thinking that's too much the other way. Should I cancel the order and get a 15 pitch? Or should I run this one and get another one for when I'm not skiing? I really want the boat to have no problem yanking someone out of the water but don't want to damage the motor.

BTW- no tach on the boat. Hope you can help. Thanks in advance

D

 

[hwsiii]

Re: Need quick advice- Double oops

CANCEL the order.


H

 

[steelespike]

Re: Need quick advice- Double oops

See if you can get the prop repaired.Get a tiny tach.Beg borrow or take a friend with a gps for a ride.You should not mess with prop without a tach.
tinytach is reasonable,easy to install.Get enough wire as you cant add to it.
Get us the base line;motor year, prop size,max rpm and speed.

 

[IRBFishin]

Re: Need quick advice- Double oops

Prop is so chewed up it shook pretty good getting back to the dock. I'll try to change the order to a 15" prop since I now have no way to check for RPM and speed. I don't think the 11" is what I'm looking for.

The tinytach sounds like a good idea. I'll cross my fingers that it'll work for me and if not, I'll get a tach. At this point, there's only one way to find out. Thanks for the info.