What size mids?
06-17-2010, 10:44 AM
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What size mids?
I've got two 20" GT 200s which I can dual mount and two Merc 275-Coswoths which are 20 & 25". I thought I could mount the 20" mids right on the transom and maybe mount the 20 or 25" on a transom bracket and or a jackplate. My mech told me that he believes I need a 30" to mount as a single and 25" to mount twins, is this so. I know airdog mentioned that I use the transom bracket he used, 24" heavy duty. But I'm not sure how that would look W/O closing the motor well, which I hear is a lot of work.
Any recommendations?
Any recommendations?
06-19-2010, 05:42 AM
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The correct size for twins would be 20" mids.
The correct size for a single is a 25"
You Mechanic is correct. A 30" mid will put the cavitation plate level with the bottom of the hull. However, the performance is better with it at 25" and there is no blow out or cavitation.
I ran a 20" mid single engine. That would cavitate a bit with the chopper prop.
If I had a recommendation, it would be to run the twin GT's, unless you want a single engine, then run the 25" Merc on the transom or the 20" Merc on a 17-18" bracket.
The correct size for a single is a 25"
You Mechanic is correct. A 30" mid will put the cavitation plate level with the bottom of the hull. However, the performance is better with it at 25" and there is no blow out or cavitation.
I ran a 20" mid single engine. That would cavitate a bit with the chopper prop.
If I had a recommendation, it would be to run the twin GT's, unless you want a single engine, then run the 25" Merc on the transom or the 20" Merc on a 17-18" bracket.
06-20-2010, 10:38 AM
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The correct size for twins would be 20" mids.
The correct size for a single is a 25"
You Mechanic is correct. A 30" mid will put the cavitation plate level with the bottom of the hull. However, the performance is better with it at 25" and there is no blow out or cavitation.
I ran a 20" mid single engine. That would cavitate a bit with the chopper prop.
If I had a recommendation, it would be to run the twin GT's, unless you want a single engine, then run the 25" Merc on the transom or the 20" Merc on a 17-18" bracket.
The correct size for a single is a 25"
You Mechanic is correct. A 30" mid will put the cavitation plate level with the bottom of the hull. However, the performance is better with it at 25" and there is no blow out or cavitation.
I ran a 20" mid single engine. That would cavitate a bit with the chopper prop.
If I had a recommendation, it would be to run the twin GT's, unless you want a single engine, then run the 25" Merc on the transom or the 20" Merc on a 17-18" bracket.
