Search found 26878 matches

by jacquesmm
Wed May 22, 2019 3:28 pm
Forum: Power Boats
Topic: FS17
Replies: 4
Views: 164

Re: FS17

This project will be going on. I calculated the scantlings for Fishgtr, vinylester or epoxy does not make a big difference. Those scantlings are not ready for publication, I want to finish the foam sandwich shop manual first. That manual should cover most of the questions people will have about foam...
by jacquesmm
Wed May 22, 2019 12:18 pm
Forum: Small Boats
Topic: GV10 Buoyancy Calculations
Replies: 6
Views: 85

Re: GV10 Buoyancy Calculations

62 lbs minus the weight of the foam 2lbs = 60 lbs. Easier that way.
by jacquesmm
Wed May 22, 2019 10:46 am
Forum: Questions before purchasing the plans and announcements..
Topic: Panga 25 cabin (PG25C) questions
Replies: 15
Views: 557

Re: Panga 25 cabin (PG25C) questions

Here we go: At a displacement of 3,000 lbs, with a 70 HP, she will top at 22.5 mph. 3,000 lbs is total weight: hull, motor, fuel, persons and gear. I suppose that means 3 to 4 persons and half a tank of fuel plus some gear. 70 HP means max. at the shaft. That will be the top of the power curve and y...
by jacquesmm
Wed May 22, 2019 9:59 am
Forum: Power Boats
Topic: TW28 Question for Jacques
Replies: 7
Views: 362

Re: TW28 Question for Jacques

Some boat displacing less than 5 tons may qualify for documentation when displacement is calculated using the USCG formula. The government help while in foreign waters is just a statement, I would not count on it. Documentation is equivalent to a title. It is a protection against theft. When you sel...
by jacquesmm
Wed May 22, 2019 9:47 am
Forum: Questions before purchasing the plans and announcements..
Topic: Panga 25 cabin (PG25C) questions
Replies: 15
Views: 557

Re: Panga 25 cabin (PG25C) questions

Speed and HP are a function of the weight. One can use a simple formula like Crouch and get very close. I can do more precise math but a 70 is ideal for 2 persons and a light load. For 4 persons, I would go above 100 HP. The boat may plane with a 70 and 4 persons but the engine will have to work har...
by jacquesmm
Tue May 21, 2019 11:55 am
Forum: Forum Software & Site Bug Reports
Topic: No Alaska shipping on new website?
Replies: 9
Views: 152

Re: No Alaska shipping on new website?

Pricing the shipping to Alaska has been a problem since I created this business. The problem is not really with shipping, that works but estimating the cost and have the web site calculate it correctly is almost impossible. I remember the shipping of a kit that did cost us 7 or 8 hundreds $ extra be...
by jacquesmm
Tue May 21, 2019 11:47 am
Forum: Power Boats
Topic: FS18 on the double!
Replies: 8
Views: 119

Re: FS18 on the double!

For lowering the sheer: are you going to lower the outboard clamp too? You can't, the transom height at the clamp depends on your outboard shaft length. If you lower the sheer, you must change the shape of the transom. Plus, all your frames are going to stick out, you must adjust them. You say that ...
by jacquesmm
Tue May 21, 2019 10:31 am
Forum: Power Boats
Topic: FS17
Replies: 4
Views: 164

Re: FS17

No, that's next week. I will be gone from the day after Memorial day until June 20th.
I will have sporadic internet access.
by jacquesmm
Tue May 21, 2019 10:30 am
Forum: Builder's Power Boats
Topic: Mike Smith's TW28 build
Replies: 100
Views: 2234

Re: Mike Smith's TW28 build

All good advice and that's why I did not reply earlier.
Do as Broomside says.
by jacquesmm
Mon May 20, 2019 4:31 pm
Forum: Power Boats
Topic: FS17
Replies: 4
Views: 164

Re: FS17

Same as what it will be for epoxy-foam sandwich BUT I am not ready to work on the conversion of that one. I want to put the shop manual out first.
Email me and I will give you some scantlings. Count on using more than twice the amount of glass and resin than for the plywood-epoxy version.