tpenfield's Recent Activity
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tpenfield attached a file to the thread Twin I/O to Twin Outboard Conversion Project.
The solid fiberglass inserts are done . . . Here are a couple of pictures for the folks at home. In-process . . . rolling out each of...
Feb 12, 2026 at 7:03 PM
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tpenfield attached a file to the thread Twin I/O to Twin Outboard Conversion Project.
One insert done and 1 to go . . . . [ATTACH] . My newly formulated method is to set up about 16 layers, one at a time, insuring proper...
Feb 11, 2026 at 6:50 PM
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tpenfield replied to the thread Twin I/O to Twin Outboard Conversion Project.
Yes, 200˚F + can be too hot . . . These pieces are getting up to 120-130˚F, so no worries.
Feb 11, 2026 at 6:41 PM -
tpenfield replied to the thread Twin I/O to Twin Outboard Conversion Project.
I'm making the solid fiberglass inserts for the transom . . . oh what fun! I was hoping to get something like a 50% glass to resin...
Feb 11, 2026 at 9:53 AM -
tpenfield replied to the thread Twin I/O to Twin Outboard Conversion Project.
Yes, that was the plan and the N.A. has indicated such. :)
Feb 10, 2026 at 12:18 PM -
tpenfield attached a file to the thread Twin I/O to Twin Outboard Conversion Project.
One thing that the N.A. was interested in reviewing, given the added buoyancy at the stern, was the trim angle of the hull. If the trim...
Feb 10, 2026 at 5:22 AM
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tpenfield replied to the thread Twin I/O to Twin Outboard Conversion Project.
Yes, no need to repair because it isn’t broken (yet ) Each layer of 1708 is about 0.045” (1mm). So, 23 layers to the inch. When I...
Feb 9, 2026 at 7:31 PM -
tpenfield liked comfisherman's post in the thread Twin I/O to Twin Outboard Conversion Project.
Your essentially building really tough core, not repairing skin. Was trying to remember how many layups we did for the inch, we went...
Feb 9, 2026 at 7:16 PM -
tpenfield replied to the thread Twin I/O to Twin Outboard Conversion Project.
Yes, a bit unusual approach, but once done I think you'll see it. The entire core gets encased in about 10 layers of glass - 1808/1708
Feb 9, 2026 at 6:14 PM -
tpenfield replied to the thread Twin I/O to Twin Outboard Conversion Project.
In other news . . . I got the Hydrostatic & Speed/Power (Savitsky) analysis back from the N.A. Not 100% sure what I'm looking at, but...
Feb 9, 2026 at 6:10 PM -
tpenfield attached a file to the thread Twin I/O to Twin Outboard Conversion Project.
I started working on the transom for its new configuration with solid fiberglass inserts. . [ATTACH] . My plan is to glass one side of...
Feb 9, 2026 at 3:13 PM
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tpenfield replied to the thread Twin I/O to Twin Outboard Conversion Project.
I'm looking at about 500 lbs weight of the bracket vs. my original projections of 425-ish lbs. Also safety factors are more in the 5X...
Feb 8, 2026 -
tpenfield replied to the thread Twin I/O to Twin Outboard Conversion Project.
It sure is a hunk of glass . . . Each of the glass inserts is about 270 cu. in. I'm hoping to be about 2/3 glass and 1/3 resin . . ....
Feb 8, 2026
