kicker motor ?

biteme12

Cadet
Joined
Aug 12, 2010
Messages
28
I have a 18 foot chapprral 4.3 v6.Can I use a 15 inch short shaft out board for a kicker.Or do I need a long shaft for a kicker motor.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,096
Re: kicker motor ?

Ayuh,... Wrong forum,... try General Boating...
 

JimS123

Fleet Admiral
Joined
Jul 27, 2007
Messages
8,246
Re: kicker motor ?

For an 18' boat, a short shaft will probably be what you want. To be sure, buy the bracket and hold it up on the transom where you want to install it. (usually as high as it will go). Then put it in the down position and measure the distance from the top of the bracket to the bottom of the boat. That will tell you for sure.

The distance will probably not be too large for a short shaft. If it is, just mount the bracket lower.

You want the prop below the boat, but not necessarily the cav. plate becaue you will not be planing the boat.
 

Boatist

Rear Admiral
Joined
Apr 22, 2002
Messages
4,552
Re: kicker motor ?

I think it depends more on how you use your motor.
For inland waters, small lakes and rivers I think a 15 inch shaft is pretty good.

On my 21 foot Runabout 15 inches works very well for trolling and getting back to the dock.
Offshore a 15 inch shaft is worthless on my boat. Even after converting to a 20 inch shaft the prop still comes out of the water in 8 foot following swells.
Also the 20 shaft with a high thrust 10 by 7 pitch works much better for backing.
 

Boatist

Rear Admiral
Joined
Apr 22, 2002
Messages
4,552
Re: kicker motor ?

You can go ahead and try it.
One thing to know at low power if the prop comes out of the water it is not a big deal.
Motor will speed up some and when it reenters the water it will be ok.
At high power if the prop comes out of the water it is bad news.
Motor will rev way up and when the prop reenters the water and the prop gets a byte the sudden shock will likely break the flywheel key and of course die until you get a new key installed.

I use our motor in the ocean mostly for backing into wind and swells to slow our drift.
On my boat will come out of the water mostly while backing.
When the swell is comming the motor will first go under the swell then when the swell goes under the boat the prop comes out of the water.
 
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