short leg versus long leg??
Submitted by flash as on Thu, 2009-09-17 09:38
hi all i am just wondering what peoples opinion's are on the length of the leg on boat motors. reason being is that i have recently fitted another motor to our boat and the latest motor has a very long leg on it,its actually around 8 inches longer than the old leg and i am not sure weather this is a good thing or a bad thing.one thing i have in my favour is that both motors i have are the same (apart from leg length)so i can swap the leg over fairly easily! just wondering what everyones opinion is and or preferences??? thanks heaps adam
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fishcrazy
Posts: 1235
Date Joined: 27/01/07
leg length
it depends on where the prop sits it needs to be at the right height level to acheive cavitation properly
just dhu it
Posts: 1081
Date Joined: 14/05/09
motor
As mentioned before the motor has to be long enough to allow the prop to sit at the right height, its strange the old motor was so short and created no problem, in general when your boat is running at speed you should be able to see the top side of the cavitation plate and there should be no rooster tail or side spray coming of the motor, running to deep only creates drag on the motor , it also allows the power head to be higher up and not taking in water when drifting, maybe ask the motor guy , all transoms are designed and built to suit a specific size leg length
brenz
Posts: 2182
Date Joined: 15/06/06
mate the hight of the
mate the hight of the transom will be what determins it for you not what you prefer unfortunaly
jersey
Posts: 393
Date Joined: 12/06/08
Check the
Cavitation plate on the motor,(above the prop blades) from my understanding,the keel of the boat should be about leval with this,you can adjust the motor up with wood blocks and the bolt holes on the mounting plate and boat transum,some others on this site may be able to offer you more help.jersey
flash as
Posts: 286
Date Joined: 07/04/09
it makes a lot of since what
it makes a lot of since what you guys are saying thanks 4 the advice since there is a fair rooster tail now and wasnt before i will swap the leg over. not to mention that the old leg was original with boat so i guess that is the length i need once again thanks for the comments
A1 quality plasterboard installed if needed shops offices housing u won't find better quality or value with my work! Ceiling master!