Whaler Central - Boston Whaler Boat Information and Photos

Posted by whalerman on 04/30/12 - 6:40 AM

Hi, I am looking for a prop to fit this set up. The engine is an Evinrude 150 E-TEC. Boat weight is 2500 lbs. dry,no engine or fuel or gear.

Posted by Tom W Clark on 04/30/12 - 7:02 AM

Thom -- There are hundreds of propellers that will fit an Evinrude E-TEC 150. Did you have one particular one in mind?

Posted by whalerman on 04/30/12 - 9:59 AM

Hi, one that will give good performance . I have tried the viper 17p and she barely gets to 5300 rpm with the engine all the way up on the mounting bolts and trimmed out. I would like to get the engine to 5600 rpm or as close to it as possible, in the optimal range. Thanks for your input in advance.

Posted by Phil T on 04/30/12 - 10:59 AM

Hu?

Why not take Tom's advice from this thread? Remember this?

http://www.whalercentral.com/forum/vi...d_id=13589

Tom's second recommendation:

An even better prop would be the 14-1/4" x 17" Stiletto Advantage 4.75 (or its Turbo 1 sibling), which would also cost less too.

Edited by Phil T on 04/30/12 - 11:01 AM

Posted by whalerman on 04/30/12 - 12:58 PM

Hi, the hull is not a classic hull design but, the accu-trac hull and much heavier than the 18 outrage classic.

Posted by Phil T on 04/30/12 - 1:13 PM

Going out on a limb, putting my Tom Clark hat on, dropping down to a 15" of the same brand would gain ~ 200 rpm's.

Posted by Tom W Clark on 04/30/12 - 4:36 PM

Dropping form a 17" Viper to a 15" Viper will gain you 300-400 RPM. As it turns out, there is no such thing as a 15" Viper but there is a 14-3/4” x 16" Viper, part #763912 which would gain you 150-200 RPM which would put you at 5450-5500 RPM.

To drop to a 15" BRP prop you would need to go to the 15" x 15" SSP. This is the old SST design and I do not like for this boat/motor combination.

You could also try a 14-1/4" x 13" Stiletto Advantage 4.75 which I think would put you at 5700 RPM. Maybe too high.

I am actually surprised the 17" Viper is not allowing more RPM.