Search found 61 matches

by sands35
Mon Mar 24, 2014 7:20 am
Forum: Wood and Plywood
Topic: CNC router frame kits
Replies: 7
Views: 4755

Re: CNC router frame kits

Assuming copyright is respected.... There are plenty of firms out there that will sell CNC time. I was in conversations with a few at one point. Basically, I'd order the plywood and have it shipped to the CNC firm, then ship the finished frames to me. However, most don't want to spend the time or ha...
by sands35
Mon Jan 27, 2014 9:48 am
Forum: Wood and Plywood
Topic: Mahogany Planking over Cold Molded veniers of plywood.
Replies: 4
Views: 2439

Re: Mahogany Planking over Cold Molded veniers of plywood.

I've never done what you need to do, but to me it sounds an awful lot like laying floor tiles. You use a square or V notch trowel to put the adhesive down. Prevents lumps with areas of too much adhesive.
by sands35
Mon Dec 16, 2013 3:07 pm
Forum: Power Boats
Topic: CNC cutting
Replies: 8
Views: 2554

Re: CNC cutting

Because I've had dead time at work, I put a J. Hacker design into CAD and toyed with the idea of having the frames CNC cut. I called a few places around and they basically charge by the hour for CNC time. I did not have the job quoted though. You will pay the same for the wood, but it's up to you if...
by sands35
Thu Oct 31, 2013 8:33 am
Forum: Hankinson designs
Topic: Tahoe 20 - New Zealand Progress
Replies: 184
Views: 75544

Re: Tahoe 20 - New Zealand Progress

Have decided on the channel cross section for the main trailer members vs box, it is more expensive though, but decision made & the engineers have ordered components and steel. Back to the boat and electrics. Has anyone put the battery / batteries under the front seat vs under the rear seat as show...
by sands35
Mon Sep 30, 2013 10:10 am
Forum: Power Boats
Topic: Propellor size for a rotary engine in a Squirt
Replies: 1
Views: 928

Re: Propellor size for a rotary engine in a Squirt

I would imagine a prop with a similar diameter to one of the same HP, but silly low pitch so that the engine is in the high end of it's torque band at your planned operating speed. The trick is to get the pitch right so you have enough torque to get it onto plane. I would plan on having a 2nd motor ...
by sands35
Tue Sep 10, 2013 5:19 am
Forum: Hankinson designs
Topic: Tahoe 20 - New Zealand Progress
Replies: 184
Views: 75544

Re: Tahoe 20 - New Zealand Progress

Nice! Who did you order those from?
by sands35
Fri Sep 06, 2013 5:19 am
Forum: Power Boats
Topic: What runabout for open cockpit for 5??
Replies: 8
Views: 1998

Re: What runabout for open cockpit for 5??

OK (referencing the Tahoe) If you are careful with how the driver's seat is made so that you can get a lot of foot room under it, then you can make an "L" shaped seat arrangement. Or, two captains chairs on swivels and a bench behind. Since the motor is behind the driver, you can make plenty of leg ...
by sands35
Thu Sep 05, 2013 12:51 pm
Forum: Power Boats
Topic: What runabout for open cockpit for 5??
Replies: 8
Views: 1998

Re: What runabout for open cockpit for 5??

but doesn't care for the sideways seating in it, and I would want 2 chairs in the "1st row", and a full width bench behind. Jeff Do you waterski? If you do, you want some way to give passengers a way to see the skier without contorting their necks. A spotter seat is a must, and Bill's layout will w...
by sands35
Sat Aug 17, 2013 10:47 am
Forum: Power Boats
Topic: Bumper Rail installation - Opinions please
Replies: 8
Views: 1541

Re: Bumper Rail installation - Opinions please

The bumper rail that typically starts at mid ship and runs to the transom? IMHO, it is a semi-sacraficial part. So it needs to be installed in such a way that it can be replaced without taking the boat apart. I'd install it so that it is screwed with blind screws from the outside after any fiberglas...
by sands35
Fri Aug 09, 2013 9:29 am
Forum: Hankinson designs
Topic: Windshield for Barrel Back
Replies: 11
Views: 3910

Re: Windshield for Barrel Back

Also - there has to be more than a few foundries in Cali that can do one-off sand casts. The process is pretty simple with some very basic knowledge of how to make a pattern that will come out of the sand mold.
by sands35
Fri Aug 09, 2013 9:12 am
Forum: Hankinson designs
Topic: Windshield for Barrel Back
Replies: 11
Views: 3910

Re: Windshield for Barrel Back

Two sites I've found:

http://www.californiaclassicboats.com/index.htm

http://www.classicboatconnection.com/

There is also wood as a framing material.

These guys have some $tunning examples:

http://vandamboats.com/
by sands35
Wed Jul 24, 2013 11:10 am
Forum: Hankinson designs
Topic: Tank vent question
Replies: 5
Views: 2039

Re: Tank vent question

Thanks for the quick replies guys, I was erring towards the freeboard but was getting a bit jittery about drilling a hole in the side of the boat and wanted confirmation that it was correct. Bill, I had heard that you should have a loop in the pipe, but wasn't sure whether it should go up or down s...
by sands35
Tue Jul 23, 2013 11:52 am
Forum: Hankinson designs
Topic: Tank vent question
Replies: 5
Views: 2039

Re: Tank vent question

If you overfill the gas tank, where does the gas go? All the vents that I've seen go through the freeboard so gas doesn't dump on the deck and possibly into the interior.
by sands35
Tue Jul 23, 2013 8:00 am
Forum: Power Boats
Topic: Hacker Craft Tommy Bahama style
Replies: 4
Views: 1750

Re: Hacker Craft Tommy Bahama style

The mechanical loads from bending and torsion of the hull are carried down the sheer rail and through big timbers that run the entire length and are part of the motor mount. On boats like this, it's typically very robust. The cold molded construction is essentially a monocoque which is also very str...
by sands35
Mon Jan 21, 2013 9:15 am
Forum: Hankinson designs
Topic: Barrelback19 Seat Framing
Replies: 2
Views: 1996

Re: Barrelback19 Seat Framing

Yes, suggest opening up the underside of the forward seats to provide leg and storage room for the rear seat passengers.

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