Need help mounting a bracket

[flyingfrizzle]

Originally Posted by bbh57

Curious as to how the motor bolts to bracket.

I noticed that as well the other day when looking at the picture. Odd how they did the ear the motor bolts to. Not common to build one that way in the industry. Most top bolts go all the way threw the bracket ear where as on this on it appears they all will be inside the bracket. Should be fine if built right and if the rear is thick enough but just different from what you normally see. Make sure you seal the bolt holes so you don't get water in the bracket chamber. Also if there is no drain on it I would add one unless you don't mind pumping the water out threw the hand hole.


Like mention by others, the AV plate should end up 3-4" above the hull bottom on most brackets. I have mine set at 4.5" but I am running a simi surfacing prop (rev-4 four blade). With a 3 blade I got some blow out on extreme turns at 4.5" but at the 3-4 range you should be fine. Also my set back was 22" where most are 24-36" back. That will change the height above the rear if yours is shorter/longer. On a seacraft 20 I would figure on 1.5-2" per 12" of set back you have on the bracket. If yours is shorter say like 18" you may only want to go 2" above the av plate. If 36" of set back you may want to go the full 4".


Mock up and measure 10 times and drill once. Most need more height if they mount by manufactures recommendations as you never hear many say their motor is too high. Most always end up adjusting up or running out of adjustment and needing more to raise higher. Most manufactures rather you be a little low and loose a little performance vs be to high and have blow out issues plus the seacraft hulls just tend to like the outboard a little high any how compared to other hulls.