Search found 420 matches

by Toni V
Mon Oct 27, 2008 4:55 am
Forum: Anything else and for sale. . .
Topic: Voith driven watertractor
Replies: 1
Views: 595

It's a fun thing to see rotating. True 360 degree propulsion.

However in industry usually Azipod has been common. It's much simpler and it's supposed to produce better efficiency.
http://www.abb.com/industries/db0003db0 ... b2929.aspx
by Toni V
Sat Oct 25, 2008 11:34 am
Forum: Small Boats
Topic: top speed of a kayak? huh?
Replies: 18
Views: 3192

I would guess catamaran or trimaran could use more sails than kayak as there is much more stability. Also the hulls can be made for speed and there's no reason to have stability for separate hulls. About the shape of hulls - especially with more sail area you could have planing capable hulls. And th...
by Toni V
Wed Oct 22, 2008 4:30 am
Forum: Small Boats
Topic: top speed of a kayak? huh?
Replies: 18
Views: 3192

Hull speed is a speed where wave making resistance starts to increase for some hulls. If hull makes very little waves - like long and narrow kayaks - the effect of hull speed is less. So a hull speed is always there, but it's effect might not be noticeable. wiki says: http://en.wikipedia.org/wiki/Hu...
by Toni V
Fri Sep 19, 2008 4:42 am
Forum: Builder's Power Boats
Topic: MT-24 construction pictures
Replies: 41
Views: 8594

How's the rpm's, speed and trim with half or 3/4 throttle? It does not matter if the WOT rounds are bit low currently if the motor is happy in cruise speed. Also I believe the engine has break-in perioid currently. It might start to turn more rounds after some time. So, if the boat goes fine now cru...
by Toni V
Thu Sep 18, 2008 2:59 am
Forum: Questions before purchasing the plans and announcements..
Topic: Breaking seas boat
Replies: 41
Views: 5417

How about panga-25s or lb-22 ? I guess both should go rather fine in slow or faster speeds.
by Toni V
Sat Sep 13, 2008 4:45 pm
Forum: Resins, Fiberglass and Paint
Topic: Where is the thread " Supplies in Europe"?
Replies: 6
Views: 1407

Any news on this?

I was about to order couple pounds on graphite. Ideas how much the shipping would be from US if EU parner is still offline?
by Toni V
Fri Sep 12, 2008 7:22 am
Forum: Small Boats
Topic: Glue VS Putty
Replies: 10
Views: 2085

You should use epoxy for the whole process. Plain epoxy to coatings, fiberglassing and prewetting seams. Thickened epoxy (epoxy+woodflour or commercial filler) as a glue and as a putty. The amount of filler can vary depending the case and materials. But, first - read the tutorials! http://boatbuilde...
by Toni V
Fri Aug 15, 2008 7:45 pm
Forum: Questions before purchasing the plans and announcements..
Topic: Down East Cruiser 25 photos?
Replies: 6
Views: 2003

De-25 is a planing boat. That means a smaller engine might not be enought to get her to plane. If 90hp is too much maybe you'll happy with about 5 knots speed with 9.9 hp engine. And where you can buy gas at 1.49 e/l ? that's pretty cheap! Also de-25 is a new design - not many has been done yet so t...
by Toni V
Sat Jul 12, 2008 2:36 pm
Forum: Anything else and for sale. . .
Topic: Kenau, something else
Replies: 4
Views: 914

Ohh, someone has had the same idea as I. I've been drawing such boats for long time - just for fun. Idea is to have very slim main hull which gives nice displacement speed over hull speed and the "outriggers" will give stability. Not sure how it'll do in waves. Thats a nice looking one :D As the gas...
by Toni V
Wed Jul 02, 2008 2:20 am
Forum: Anything else and for sale. . .
Topic: S&G Fishing Kayak
Replies: 18
Views: 2628

I think Jbo might do well with a sponsoon boat or such. There was some talks about one in this forum. Two sponsoons and a armchair in a middle.