A little crazy?
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- Royal Aluminum Star
- Posts: 266
- Joined: Mon Jan 19, 2015 11:07 pm
- Location: Lake Superior-Michigan's U.P.
Re: A little crazy?
A buddy welding up the second design
Rodney
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
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- Royal Aluminum Star
- Posts: 266
- Joined: Mon Jan 19, 2015 11:07 pm
- Location: Lake Superior-Michigan's U.P.
Re: A little crazy?
I bet no one here has seen a hole that big in the stern of a Marinette before!
Rodney
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
Re: A little crazy?
Wild!
I hope you're reinforcing the hell out of the transom to take the huge bending loads from those outdrives....
Of course, you are!
Great project!
Jeff
I hope you're reinforcing the hell out of the transom to take the huge bending loads from those outdrives....
Of course, you are!
Great project!
Jeff
"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington
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- Royal Aluminum Star
- Posts: 266
- Joined: Mon Jan 19, 2015 11:07 pm
- Location: Lake Superior-Michigan's U.P.
Re: A little crazy?
Full transom weld up!
Rodney
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
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- Royal Aluminum Star
- Posts: 266
- Joined: Mon Jan 19, 2015 11:07 pm
- Location: Lake Superior-Michigan's U.P.
Re: A little crazy?
Inside transom welding
Rodney
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
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- Royal Aluminum Star
- Posts: 266
- Joined: Mon Jan 19, 2015 11:07 pm
- Location: Lake Superior-Michigan's U.P.
Re: A little crazy?
Transom assembly cut outs
Rodney
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
-
- Royal Aluminum Star
- Posts: 266
- Joined: Mon Jan 19, 2015 11:07 pm
- Location: Lake Superior-Michigan's U.P.
Re: A little crazy?
I made a jig to get the location of the new stringers and engine mounts.
Rodney
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
-
- Royal Aluminum Star
- Posts: 266
- Joined: Mon Jan 19, 2015 11:07 pm
- Location: Lake Superior-Michigan's U.P.
Re: A little crazy?
Stringers laid out and a relief cut out for the power steering actuator.
Rodney
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
1975 28 Express-Twin 350 Chevy's, SOLD
1990 32 Express--Twin Mercruiser 454 with Bravo I outdrives
Portage Canal Waterway-Upper Peninsula,Lake Superior
Re: A little crazy?
Looking good, but you must install some substantial 'knees' to brace the transom to the keel (and in at least four places). The twisting down force load on the transom from those huge motors is significant!
Example: One of tests I use to determine if an I/O boat's transom is rotted is to stand on the cavitation plate and jump up and down. If any visible flex is seen the transom is on its way out.
Good luck on your fascinating project!
[attachment=0]Marinette Knees.JPG[/attachmenteff
Jeff
Example: One of tests I use to determine if an I/O boat's transom is rotted is to stand on the cavitation plate and jump up and down. If any visible flex is seen the transom is on its way out.
Good luck on your fascinating project!
[attachment=0]Marinette Knees.JPG[/attachmenteff
Jeff
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- Marinette Knees.JPG (23.38 KiB) Viewed 154871 times
"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington
Re: A little crazy?
I 2nd Jeff's reinforcement suggestion. Marinette hulls do crack. I've seen 2 models that cracked up near the chine and the welder told me he has repaired a handful of Marinettes.
1986 Sedan 32'. Twin Chrysler 360in^3, 275hp.
Forum member since 1998.
Forum member since 1998.