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by gdcarpenter
Mon Apr 03, 2017 3:49 am
Forum: Power Boats
Topic: What does your boat weigh?
Replies: 12
Views: 3649

Re: What does your boat weigh?

Given my ZIP weighs 800 lb., minus 375 lb. (completed hull weight estimated by GlenL), that means the 'build out' after hull completion, with engine, electrical, and accessories, added 425 lb. My deck boards are only1/8" thick (a third thinner/lighter than most) and my sole boards are 5/16" thick (a...
by gdcarpenter
Sun Apr 02, 2017 3:03 pm
Forum: Power Boats
Topic: What does your boat weigh?
Replies: 12
Views: 3649

Re: What does your boat weigh?

My ZIP, slightly smaller than the Malahini, fully loaded for a days outing, weighs in a little under 800 pounds. I suspect my ZIP is lighter than most ZIPs. That's with White Oak framing, big battery, 6 gallons of fuel plus an extra emergency one gallon back up, anchor, and all safety equipment. My ...
by gdcarpenter
Tue Mar 28, 2017 3:55 am
Forum: Power Boats
Topic: Malahini electrical
Replies: 4
Views: 1797

Re: Malahini electrical

I think you are okay with 10 gauge for the starter. On my ZIP the battery is forward where keel meets breast hook feeding a Mark35A which I guesstimated to draw about 35 Amps. I also tested the long cable cranking an in line 6 Merc and all was well. I can't imagine you will ever draw anywhere near y...
by gdcarpenter
Fri Feb 24, 2017 4:40 am
Forum: Wood and Plywood
Topic: Butt joint on side planking
Replies: 5
Views: 3034

Re: Butt joint on side planking

"Form Follows Function"

I kinda like the seam on my ZIP sides, but that's the carpenter in me.

I managed to do a scarf joint, but the difference visually (on the outside) between a scarf and clean butt joint is negligible. I didn't ' want a butt blocker on the inside.
by gdcarpenter
Thu Feb 02, 2017 1:18 pm
Forum: Wood and Plywood
Topic: Question about ZIP keel
Replies: 17
Views: 6695

Re: Question about ZIP keel

On my ZIP I added approximately 5/8" thick by about 1 1/4" tall stiffeners onto my battens, I used 3 battens per side.
Then again I ran my sole or floor boards side to side and that kept the floor about 3 1/2" below the top of the bottom frames so zi could sit lower in the boat.
by gdcarpenter
Wed Jan 25, 2017 6:33 pm
Forum: New Members, Please Introduce Yourself
Topic: New member from Durham, NC
Replies: 10
Views: 3294

Re: New member from Durham, NC

Hi Neighbour, Garfield here in Raleigh, NC. I built a ZIP a few years back so if you want to drop by my home for a look see you are most welcome. If you can build a teardrop trailer you can build a boat since you are used to working with things that are neither plumb nor square. (919) - five three n...
by gdcarpenter
Thu Jan 05, 2017 4:49 am
Forum: Wood and Plywood
Topic: glassing plywood prior to hull installation
Replies: 18
Views: 6453

Re: glassing plywood prior to hull installation

I have never tried it that way and don't see any benefits of doing it that way, but that doesn't mean it's wrong. I don't think flexibility would be an issue though. For floatations I laid fiberglass over an upside down plastic dish pan, then applied the epoxy, essentially making a fiberglass 'shell...
by gdcarpenter
Fri Oct 28, 2016 3:34 am
Forum: New Members, Please Introduce Yourself
Topic: New Member
Replies: 1
Views: 1419

Re: New Member

Welcome

Old member, Raleigh, NC

Built a ZIP

Have you selected a particular design yet?
by gdcarpenter
Sat Oct 22, 2016 5:50 am
Forum: Small outboards
Topic: Michael's ZIP
Replies: 305
Views: 141226

Re: Michael's ZIP

Hi Michael, I went with 3 battenss per side on my ZIP, each narrower than the plans. I then added 5/8" wide stiffeners or strong backs to the topside of each batten that were, on average, about 3/4" tall. Three battens per side is an option on the plans. My main reason for doing this was to run much...
by gdcarpenter
Sat Oct 22, 2016 5:37 am
Forum: Speed and Performance
Topic: Fuel economy?
Replies: 5
Views: 5278

Re: Fuel economy?

I have never calculated or measured my fuel consumption, but I can make 5 round trips between the cottage and the marina, about 50 miles, on a 6 USA gallon (5 Imperial or 'Canadian' gallon) cruiser tank, so 8+ MPG (US) comfortably. That's spending most of the time running between 3/4 and full thrott...
by gdcarpenter
Thu Oct 20, 2016 4:22 pm
Forum: Wood and Plywood
Topic: The Look w/o the Weight?
Replies: 21
Views: 6376

Re: The Look w/o the Weight?

There are a lot of ways to save weight and to add weight. I guess I'm wondering why you desire to save weigh, go faster? My top deck is 1/4" ply substrate topped with 1/8" white oak strips with blood wood accent stripes, most decks seem to be built with 3/8" strips, so that's one place to save weigh...
by gdcarpenter
Sun Oct 16, 2016 7:49 am
Forum: Painting
Topic: Bottom Painting & Plank staining
Replies: 22
Views: 16536

Re: Bottom Painting & Plank staining

The VC Performance Epoxy I used for the bottom on my ZIP was sprayed down directly over the cured epoxy with an 80 grit final sanding on the epoxy. She's sat in the the lake for a month at a time, I believe the VC is rated for up to 60 days continuous immersion. I personally think the best part of t...
by gdcarpenter
Sun Oct 16, 2016 6:20 am
Forum: Power Boats
Topic: I'm a Boat Builder! G-L Ski Tow under construction!
Replies: 346
Views: 101691

Re: I'm a Boat Builder! G-L Ski Tow under construction!

Some years ago " Fine Homebuilding" did an in depth study/test of glues. They used 6 types off glues on Maple, White Oak, and Ipé and used tight, snug, and loose bridle joints. The breaking point of each sample was scientifically measured. Their most surprising result was on Ipé joints, considered b...
by gdcarpenter
Sat Oct 15, 2016 6:09 pm
Forum: Epoxy
Topic: Tropics Build from Teak-Avg Temp Air & Water 86F Salt
Replies: 8
Views: 8098

Re: Tropics Build from Teak-Avg Temp Air & Water 86F Salt

Fine Homebuilding did a pretty thorough and in depth study of glues some years back. The following quote was their opinion from their tests on Ipé. "Epoxy isn’t necessary on a dense tropical wood The strongest joint in the whole test was yellow glue on Ipé—a real surprise. Indeed, both yellow glue a...
by gdcarpenter
Sun Oct 02, 2016 5:23 am
Forum: Wood and Plywood
Topic: Genuine Mahogany - is it all gone?
Replies: 32
Views: 12835

Re: Genuine Mahogany - is it all gone?

Can't help you with a specific vendor, but I have joined the local ACBS and they have their 'sources' - so you might want to contact your local ACBS Chapter.
All the best!

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