Search found 3836 matches

by Spokaloo
Sun Feb 12, 2017 5:29 pm
Forum: Power Boats
Topic: Nina 22
Replies: 4
Views: 505

Re: Nina 22

I'd throw something in as a builder/owner of an LB22. The trim angle is sensitive to weight in this boat. Running an outboard that's larger than recommended causes some trim angle issues. Invariably, builders want to stretch the limits of the design. To hang 50hp off the back of the boat will make i...
by Spokaloo
Thu Nov 24, 2016 11:55 pm
Forum: Builder's Power Boats
Topic: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia
Replies: 4723
Views: 277988

Re: ST21 "SKINNYDIP" Noosa Australia

I feel as though you should skip your trip sailing and just keep working on the boat.

Excited to see how sea trials go.

E
by Spokaloo
Tue Nov 22, 2016 6:24 pm
Forum: Builder's Power Boats
Topic: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia
Replies: 4723
Views: 277988

Re: ST21 "SKINNYDIP" Noosa Australia

Hah, moral of the story:

Yes, his waterline may be accurate, but my skills as a painter may not be as good! My errors make me check the waterline, not his.

E
by Spokaloo
Tue Nov 22, 2016 6:12 pm
Forum: Builder's Power Boats
Topic: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia
Replies: 4723
Views: 277988

Re: ST21 "SKINNYDIP" Noosa Australia

Just because Jacques' waterline was correct doesn't mean I can paint it on worth a sh*t...

:lol:

E
by Spokaloo
Tue Nov 22, 2016 6:05 pm
Forum: Builder's Power Boats
Topic: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia
Replies: 4723
Views: 277988

Re: ST21 "SKINNYDIP" Noosa Australia

I'm a fan of painting the bottom itself all the way through antifouling. This will (likely) be the last time you'll be able to paint her bottom down-handed, so use it to advantage. I like to paint to the chines, then do the chine to waterline area once she's been in the drink once to confirm your pl...
by Spokaloo
Sun Oct 23, 2016 11:35 am
Forum: Builder's Power Boats
Topic: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia
Replies: 4723
Views: 277988

Re: ST21 "SKINNYDIP" Noosa Australia

Parts of that explanation are correct. Lift from the prop, water coming from the tunnel is directed downward slightly, etc. There is also a lack of forward lift due to the fine sections, dead flat keel sections, etc. The issue at hand with some of Atkin's designs followed that these boats were desig...
by Spokaloo
Thu Oct 20, 2016 10:26 pm
Forum: Builder's Power Boats
Topic: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia
Replies: 4723
Views: 277988

Re: ST21 "SKINNYDIP" Noosa Australia

No worries.

If you're a 15kts or less guy, you probably won't need them. If you want to squeeze extra speed out of it, the spray rails appear to be invaluable.

E
by Spokaloo
Wed Oct 19, 2016 11:20 pm
Forum: Builder's Power Boats
Topic: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia
Replies: 4723
Views: 277988

Re: ST21 "SKINNYDIP" Noosa Australia

You're dipping into an area of fluid dynamics that an engineer trained in the art could spend years studying. So with that, it's a challenge to answer. In Jacques' early renderings, the spray rail runs from the bow to about 3/4 of the hull length: http://bateau.com/images/boatpics/ST21_top_600.jpg I...
by Spokaloo
Sun Oct 16, 2016 5:39 pm
Forum: Builder's Power Boats
Topic: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia
Replies: 4723
Views: 277988

Re: ST21 "SKINNYDIP" Noosa Australia

So if you get good data rates, look at Timm Schlieff's Rescue Minor build. He has a few high quality videos that show why you should consider spray rails, and a good location for them. He has one, specifically, that's a closeup of the bow underway. Water climbs up these fine hulls pretty readily, so...
by Spokaloo
Sun Oct 16, 2016 5:28 pm
Forum: Power Boats
Topic: ST21 spray rail query
Replies: 4
Views: 477

Re: ST21 spray rail query

I was very enamored with the design for a long time, and reached out to many people about them. Ran into quite a few print reports, a few of which I still have. Spoke to several builders of various tunnel stern seabrights from Atkin and other origins. Still interesting to me, but lack speed potentia...