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  roostertails on 22' OR w/johnson 235 and 14 1/2 x 19 ?

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Author Topic:   roostertails on 22' OR w/johnson 235 and 14 1/2 x 19 ?
donel posted 04-30-2002 07:50 PM ET (US)   Profile for donel   Send Email to donel  
this new to me whaler has original setup of johnson 235 and alum. 14 1/2 x 19 prop and in first use seems to operate well, but puts out twin ( v shaped ) roostertails at all trims - in smooth water. does anyone recall what your prop was with this motor? thanks
kingfish posted 05-01-2002 08:44 AM ET (US)     Profile for kingfish  Send Email to kingfish     
I'll have to look at what I have on my Outrage 22' with 225 Evinrude, but I THINK it is the same as you mention. What is your RPM reading and what is your speed at WOT ?

I'm really having a hard time thinking that your prop is causing these rooster tails no matter what size it is, unless your motor is trimmed up (out) too high or is raised too high. Do you have trim tabs or transducers or something else on the transom that is in the waterflow from beneath the boat, or something odd bolted on to your cavitation plate?

kingfish

Chap posted 05-01-2002 09:09 AM ET (US)     Profile for Chap  Send Email to Chap     
Hello,
My friend is having the same problem with his 200 HPDI on his '85 Mako 224. We are going to raise the motor up a hole or two form the lowest mount and see what happens. It stops at extreme trim up but by that time it is really porpoising.
Thanks
Chap
kingfish posted 05-01-2002 12:26 PM ET (US)     Profile for kingfish  Send Email to kingfish     
Chap-

Good point - could be the motor is set too low, rather than too high.

kingfish

Chap posted 05-01-2002 12:39 PM ET (US)     Profile for Chap  Send Email to Chap     
Thanks Kingfish.
Worth a shot. My friend's cavitation plate is totally submerged while on plane. Maybe take a look over the stern while underway. Definately dragging around a ton of lower unit in the water.
Chap
Tom W Clark posted 05-01-2002 02:42 PM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     
The prop has little or nothing to do with the roostertails.

As has been suggetsed, the motor is too low. Raise a hole or two and see what happens.

reelescape1 posted 05-01-2002 03:18 PM ET (US)     Profile for reelescape1  Send Email to reelescape1     
My 22' OR w/225 Yam is one hole down.....thats a 25" shaft motor.
lhg posted 05-01-2002 04:43 PM ET (US)     Profile for lhg    
Agree - A vee shaped spray off the engine is always a sign of too low motor mounting. Raise one hole, at least.
donel posted 05-02-2002 11:17 AM ET (US)     Profile for donel  Send Email to donel     
thanks to all. now i know some things to look for and what adjustment to make.

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