unkown outboard bracket transom bracket 30" LOOK PIC....

phatmanmike

Captain
Joined
Oct 24, 2003
Messages
3,869
hello, i was recently given this thing and i dont know anything about it, i have seen them very ffew other times on other boats, i think ive only seen them twice altogether....<br /><br />have any of you fellas and fellets seen anything like this. i was told it was used on a 225hp mefcury....but that couldve been a wise tale, wh knows.<br /><br />i plan on using it on a 20' center console with a full transom, that previoiusly had a OMC sea-drive. it will be holding an inline4 cylinder 1997 mercury 125hp with a 25" shaft.<br /><br />the bracket is al;uminum, very very thick and strong and heavy and hasd a 30" setback.<br /><br />it says it was made by springfield marine and is called the springfield drive, but cant find any info on eother the comnay or the unit....<br /><br />any help is appreciated<br />
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Solittle

Fleet Admiral
Joined
Apr 28, 2002
Messages
7,518
Re: unkown outboard bracket transom bracket 30" LOOK PIC....

That thig looks strong enough to handle one of the old OMC V8s. 30" is one hell of a set back. You will need to get some expert advice on where to mount it to the transom and then where to mount the outboard. I doubt that the position of the SeaDrive will be relevant as it is much closer to the transom (I have a pair of SeaDrives).
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: unkown outboard bracket transom bracket 30" LOOK PIC....

With 30" setback it probably was made for a V8. The setback, most times, will have a lot to do with full tilting capabilities of a given motor. It has to provide enough setback so the hood wont hit the back of a boat if the motor is tilted all the way up. A V6 OMC looper needs at least 26" or so. A V8 needs about 30".<br /><br />As far as set up goes it depends a lot on the transom angle. I/O's are typically straighter (more to 90*) than outboard transoms. But a general rule of thumb is that for every 5" you go back, you can go up 1".<br /><br />It also has to do with how water comes off the hull. As it goes past the back of the hull it goes up.<br /><br />Simply put, if you fill in an outboard transom and add a bracket you can raise the AV plate in relation to the keel 1" for every 5" of setback. Or, if you used a 25" motor on the transom, add a bracket with 25-27" of setback and went straight back, you can now use a 20" motor.<br /><br />We typically put the outboard on the bracket and hold the motor with a hoist. Bring the whole assembly up to the boat and position the motor so that the AV plate is parallel with the keel and up 6" (with your 30" bracket). Where ever that is, thats where the bracket will bolt up to the boat. <br /><br />If mounting it that high concernes you, drop the bracket an inch and mount it there. A lot of times the rubrail or shape of the transom will play a part in mounting. An outboard can always be raised.<br /><br />The downside of mounting it too deep is that it will injest water and die a horrible death. In most cases we would like to use a 25" motor and get the AV plate 5-6" up at parallel. That will put the powerhead up fairly high away from any dangerous spray.<br /><br />Simple, huh?
 

danie

Petty Officer 2nd Class
Joined
Apr 11, 2005
Messages
154
Re: unkown outboard bracket transom bracket 30" LOOK PIC....

Now its confirmed. The bad spelling disease is spreading.<br />O mabe ur also lookin fo a sephoncer.
 

phatmanmike

Captain
Joined
Oct 24, 2003
Messages
3,869
Re: unkown outboard bracket transom bracket 30" LOOK PIC....

yes, me and gatorredcd need sponcsers for uor fishining buisnuess
 
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