Transom rebuild / redesign

[Cumulonimbus]

Hi all,

First post here but a long term boat enthusiast.

Im rebuilding a 5.3m fibreglass boat and about to install the new transom. The existing skin is 20 inches but i will be reinstating to 25inches to cater to a 25 inch shaft outboard. All new boats in Australia are now 25 inch.

My question is - See image attached. Can i rebuild the new transom to the red area? i dont want such a large opening at the back just enough to trim and steer the outboard which will be on a hydraulic jacking plate.

Edit- how the hell do you put an image in your post? this site must be from the 50s

 

[Cumulonimbus]

 

[fallguy]

You can do it. Much depends on the existing construction. Working from inside the splashwell; you can determine existing construction. If it is say two pieces of 3/4” ply; you can rabbet one layer off some 2”? and then epoxy bond the new piece to it. Then grind back gel and glass and bond glass to old glass, not gel.

Ask more questions once you know existing construction.

 

[Cumulonimbus]

thanks mate. Yes i know i can do it and know how but just wondering if the new outboard will have enough room to steer all the way. The original openning looks too wide

 

[fallguy]

thanks mate. Yes i know i can do it and know how but just wondering if the new outboard will have enough room to steer all the way. The original openning looks too wide

You need to find the rigging sheet for your selected OB and determine the distances.

 

[Cumulonimbus]

You need to find the rigging sheet for your selected OB and determine the distances.

just got off the phone with Mercury, thanks mate

 

[C. Dog]

The outboard manufacturer will supply drawings with all the information you need. I can look if you give me motor details. Keep in mind it needs clearance to turn while tilted.

Which hull & motor do you have?