Search found 27377 matches

by jacquesmm
Wed May 27, 2020 12:51 pm
Forum: Power Boats
Topic: Jacques Questions
Replies: 3
Views: 122

Re: Jacques Questions

Thanks Browndog, those two are excellent choices for that program.
by jacquesmm
Wed May 27, 2020 10:59 am
Forum: Small Boats
Topic: Daggerboard fountain when sailing in the ocean
Replies: 20
Views: 148

Re: Daggerboard fountain when sailing in the ocean

Jaysen: yes, add those cleats and that should fix the problem. I should have been more explicit in the plans and show the cleats in another view. I will add that to the drawing.
by jacquesmm
Tue May 26, 2020 3:28 pm
Forum: Power Boats
Topic: DE25 scaled drawings.
Replies: 28
Views: 991

Re: DE25 scaled drawings.

Crouch is just a simple equation, not software. Knowing your engine efficiency, you can use the formula to find how much HP you need for a given speed. From there, you get the fuel consumption. http://cs.brown.edu/people/jhughes/boats/FAQ/node42.html or more detailed but not necessary, see this: htt...
by jacquesmm
Tue May 26, 2020 2:52 pm
Forum: Small Boats
Topic: Daggerboard fountain when sailing in the ocean
Replies: 20
Views: 148

Re: Daggerboard fountain when sailing in the ocean

It may not be very clear on the drawing but there is supposed to be cleats at the top of the daggerboard, like a 1x1 on each side of the top. I only show a line there but do not comment about it. Those cleats area good handle and keep the daggerboard to got too far. They match the cleats of the uppe...
by jacquesmm
Tue May 26, 2020 11:20 am
Forum: Power Boats
Topic: Jacques Questions
Replies: 3
Views: 122

Re: Jacques Questions

1. Considering the use is for waterways and would be dealing mostly with wind chop on "rough" days, would the OB17/19 ride significantly smoother than the OD18? Yes because of the bottom shape. 2. The OB17/19 look to be a good bit heavier then the OD18, even though they are roughly the same LOA and...
by jacquesmm
Tue May 26, 2020 10:49 am
Forum: Questions before purchasing the plans and announcements..
Topic: Speed
Replies: 2
Views: 52

Re: Speed

A SC15 will go 8 mph with a 2.5 HP, that a lot of speed per HP. For planing speeds, any of our flat bottom boats will be fast if kept light.
Speed depends on hull type, weight and HP. There is not one simple answer to your question but tell us more about the boat type, size and load.
by jacquesmm
Thu May 21, 2020 11:59 am
Forum: Small Boats
Topic: More silly Plyak questions (eek)
Replies: 14
Views: 179

Re: More silly Plyak questions (eek)

All the above is correct. I avoid scarfs because it is very easy to make a bad scarf that will break. Scarfs are labor intensive and require good woodworking tools. They made sense before epoxy appeared. Today, a fiberglass splice is very easy to make and in most cases stronger than a scarf.
by jacquesmm
Thu May 21, 2020 11:53 am
Forum: Questions before purchasing the plans and announcements..
Topic: Deadrise Specs for C21, NV23, DE25
Replies: 4
Views: 145

Re: Deadrise Specs for C21, NV23, DE25

I don't know of any designer who post that but all those boats have a fine entry, usually 45 degrees or more at the cutwater and flare down to between 5 and 12 degrees at the transom.
Their hull shape is close to the big (50'+) Carolina style offshore boats.
by jacquesmm
Thu May 21, 2020 9:59 am
Forum: Core Materials: Plywood, Foam core and Honeycomb
Topic: Foam dinghy
Replies: 6
Views: 275

Re: Foam dinghy

I have drawings for a T3 scaled down and redesigned for 11' 5", made in foam sandwich, lightest version is 65 lbs. It sits on my desk since Thomas (the original designer) disappeared at sea. I may reactivated the project. http://gallery.bateau2.com/albums/userpics/10004/normal_R3.jpg BTW, that Walke...
by jacquesmm
Wed May 20, 2020 3:44 pm
Forum: Power Boats
Topic: CS25 Craddle
Replies: 3
Views: 163

Re: CS25 Craddle

One more tip: if you kept the MDF sheet that you used to cut the molds, you have the exact shape of the hull. Reinforce with 2x4, some carpet over the edge and you have perfect supports.