Search found 1735 matches

by kmorin
Mon Sep 10, 2012 6:36 pm
Forum: Alloy Boat Forum
Topic: New Propulsion System...
Replies: 27
Views: 26390

"New"?? Propulsion System...

Guys this is just a 'dual prop' axial flow water pump, the same evolution of concentric shafts that Volvo brought to the inboard/outdrive 'leg' but in this case, applied to the Hamilton pump. Axial flow is axial flow. This won't change the physics of pumps but it may give them more flow in certain t...
by kmorin
Mon Sep 10, 2012 3:16 pm
Forum: Alloy Boat Forum
Topic: Comparing Hulls
Replies: 103
Views: 72283

Comparing Hulls: More Terms and Lines

I don't want to beat a dead horse :deadhorse: but... (and everyone likes a nicely rounded stern) I'd already done some sketches for netman's skiff build and the lines article that we can reuse to make sure we're all talking the same lingo. http://i383.photobucket.com/albums/oo273/kevinmorin_photo/Hu...
by kmorin
Mon Sep 10, 2012 2:26 pm
Forum: Alloy Boat Forum
Topic: Comparing Hulls
Replies: 103
Views: 72283

Comparing Hulls: Flare and Flam

Just keep bringing up the questions if they get lost, I'm doing a bit of sketching to reduce the text so we'll get to the additional questions, mojo entry is a 'biggie' coming along shortly. Fisherman, more terms but some visuals to go along. Sculpin, I'll add the Cope to the shape discussion as we ...
by kmorin
Sun Sep 09, 2012 8:32 pm
Forum: Alloy Boat Forum
Topic: Comparing Hulls
Replies: 103
Views: 72283

Re: Comparing Hulls

fisherman, yes, those are the steps and the sheers of the hulls so far are: A stepped B hollow C stepped (almost powder horn except for angle points in sheer) D hollow E Powder horn (S shaped) F straight or nearly hollow (not sure without true profile image) G straight then stepped then hollow forwa...
by kmorin
Sun Sep 09, 2012 5:45 pm
Forum: Alloy Boat Forum
Topic: Comparing Hulls
Replies: 103
Views: 72283

Comparing Hulls: Links to articles and terms

Links to some definitions of terms http://www.glen-l.com/resources/glossary.html http://en.wikipedia.org/wiki/Hull_%28watercraft%29#Terms http://www.fish.state.pa.us/anglerboater/1999/julaug99/boathull.htm http://www.boatsafe.com/kids/022298hulls.htm After reading some of these links, you probably r...
by kmorin
Sun Sep 09, 2012 5:15 pm
Forum: Alloy Boat Forum
Topic: Comparing Hulls
Replies: 103
Views: 72283

Re: Comparing Hulls: Basics of Lines Plans

We’re not really going to get into a full blown boat design post here, at least I don’t anticipate that because there’s lots of hours of study and working out problems and trying to design (draw and calculate) for yourself as you study the overall topic. But…. (everyone likes a nicely rounded stern)...
by kmorin
Sun Sep 09, 2012 1:58 pm
Forum: Alloy Shop Talk
Topic: Pipe bender
Replies: 47
Views: 24615

Re: Pipe bender

ehsvp, ordinarily that would be rolled with a pyramid roller guiding the operator either templates or putting the pipe up and down, onto the boat, and working below the sheer with the roller. You use the pipe sized dies and then a flat roller on the other side for 1/2 pipe, in your case you'd be rol...
by kmorin
Thu Sep 06, 2012 1:18 pm
Forum: Alloy Boat Forum
Topic: Corrosion Repair
Replies: 16
Views: 21235

Re: Corrosion Repair- Sand blast pot

paddler, in case you're interested here are some images of the sand blast pot I've made plenty of times over the years from whatever is on hand that comes close to these functions. http://i383.photobucket.com/albums/oo273/kevinmorin_photo/sandblaster%20pot/SandBlaster_1a.jpg first a pot, this one a ...
by kmorin
Thu Sep 06, 2012 12:52 pm
Forum: Alloy Boat Forum
Topic: Corrosion Repair
Replies: 16
Views: 21235

Re: Corrosion Repair

paddler, drilled out rivets are a pain if you can't work to the back side, even if you were to replace with plastic washers and even plastic sleeves the seal with rivets isn't the best. I'd want to look at threaded stud mounted hardware but that implies working the back side of the surfaces, so if t...
by kmorin
Thu Sep 06, 2012 12:58 am
Forum: Alloy Boat Forum
Topic: Corrosion Repair
Replies: 16
Views: 21235

Re: Corrosion Repair

paddler, the cause of the corrosion is the (methods of) installation of the fasteners and the windows, but its not limited to Hewes' boats the practice is widespread and the reason is either ignorance or an unwillingness to build well? I have seen less than year old boats from Hewes with many other ...
by kmorin
Mon Sep 03, 2012 1:33 am
Forum: Alloy Boat Forum
Topic: Zolatone vs. What?
Replies: 13
Views: 14925

Re: Zolatone vs. What? Etching POSTS

Goatram, we've discussed acid etching in lots of contexts before- so anyone interested could use the Search function at the upper right corner of the Home page and get some reading material. Being safe when using aluminum hull maintenance products is the only way to be sure you're able to share your...
by kmorin
Mon Sep 03, 2012 1:24 am
Forum: Alloy Boat Forum
Topic: Comparing Hulls
Replies: 103
Views: 72283

Re: Comparing Hulls

mojo, thanks for the kind words, I'm always glad to be part of AAB.com's conversations about shape and building. Fisherman, we can keep moving here, or move if you prefer, its always good to check with the welder to see if he's got any ideas about organizing posts. One thing I'd like to suggest is a...
by kmorin
Sun Sep 02, 2012 7:08 pm
Forum: Alloy Boat Forum
Topic: Comparing Hulls
Replies: 103
Views: 72283

Re: Comparing Hulls

Fisherman, I'd put the new Hull E closest to C as the chine of A is much higher compared to the keel in A's forefoot; so that A is closer to D than C or E from what I can tell. Still like to have all three views or a lines plan set, to make any kind of 'true' statements. But this surely confirms moj...
by kmorin
Sun Sep 02, 2012 3:50 pm
Forum: Alloy Boat Forum
Topic: Zolatone vs. What?
Replies: 13
Views: 14925

Re: Zolatone vs. What?

Karl, the paint and zinc are not harmed in my experience, the galvanized is brightened by not removed. Paints, plastics, rubber and other elastomeric products all seem to do OK, but I'm not saying the acid stays long. Once sprayed, spread, painted, put on the metal, it only takes a minute or two (no...
by kmorin
Sun Sep 02, 2012 2:11 pm
Forum: Alloy Boat Forum
Topic: Zolatone vs. What?
Replies: 13
Views: 14925

Re: Zolatone vs. What?

Karl, I have written about acid etching before, but its expected that you'd wear full PPE including an organic vapor, half face, air purifying respirator, and full rain gear with double gloves to insure you etch the boat and not the 'etchee'. Both Zep-a-Lume (tm) and Alumabrite (tm) are a mix of two...
by kmorin
Sat Sep 01, 2012 2:52 pm
Forum: Alloy Boat Forum
Topic: Zolatone vs. What?
Replies: 13
Views: 14925

Re: Zolatone vs. What?

Karl, goat, welderbob, adhesion of any paint to aluminum requires much more effort than just spraying on the paint or coating. That is why its so expensive to paint aluminum; the level of effort, to apply paint/coatings well, is high and therefore expensive. To do the job 'right' you still have to m...
by kmorin
Wed Aug 29, 2012 1:44 am
Forum: Alloy Boat Forum
Topic: Comparing Hulls
Replies: 103
Views: 72283

Re: Comparing Hulls

fisherman, the main question for these boats' handling in overtaking seas, if that's what you mean by following seas (?), would be the power versus displacement of each hull. Hull shape will be a big factor but if the power to plane is in a hull then it makes or breaks handling in following seas. If...
by kmorin
Tue Aug 28, 2012 8:48 pm
Forum: Alloy Boat Forum
Topic: Comparing Hulls
Replies: 103
Views: 72283

Re: Comparing Hulls

fisherman, I got my letters confused but I edited that post- maybe read ist now for more (hopefully) clarity? Welder, I was trying to expand on what you said so fisherman had more guidelines for his evaluation. I agree with your summary, just trying to tell ' the rest of the story '. Anyone can make...
by kmorin
Tue Aug 28, 2012 3:10 pm
Forum: Alloy Boat Forum
Topic: Comparing Hulls
Replies: 103
Views: 72283

Re: Comparing Hulls

fisherman, welder has given some base lines for comparison but there's more to consider. Ride is a relative term, meaning that a very heavy boat with less dead rise will ride 'better' than a very light boat with more deadrise and the reason is the movement of the hull 'about' the pitch of the center...
by kmorin
Thu Aug 23, 2012 7:22 pm
Forum: Your Alloy Boat
Topic: 1989 Rozema boat Built like a TANK!
Replies: 8
Views: 7503

Re: 1989 Rozema boat Built like a TANK!

Jimbo I've seen rubber D rub rails like that promote corrosion against the hull's mount surface so it would be a good idea to look to see if there are any places where there is a white chalky build up at the top or bottom of the rubber? Not necessarily all boats would do that, but I've been involved...
by kmorin
Wed Aug 22, 2012 1:00 pm
Forum: Alloy Boat Forum
Topic: Windshield Options?
Replies: 26
Views: 10735

Re: Windshield Options?

Just got done posting when it occurred to me that there maybe an even simpler solution than forward facing hinged aluminum vent hatches. Why not put a 'scoop' just aft a few inches of the leading edge of the side sliders? An aluminum or plastic strip 3" to 4" wide, attached vertically alon...
by kmorin
Wed Aug 22, 2012 12:45 pm
Forum: Alloy Boat Forum
Topic: Windshield Options?
Replies: 26
Views: 10735

Re: Windshield Options?

If the venting of the forward windows/windscreen is desirable because you live where its warm enough to want a breeze in the cabin: why not explore a flapper type vent above or below the windows. (IF) the purpose is venting, it seems a little less than optimal to go to the trouble to hinge and resea...
by kmorin
Mon Aug 20, 2012 3:07 pm
Forum: Alloy Boat Forum
Topic: The real world
Replies: 6
Views: 5077

Mounting hardware

DwayneJ, lots of different standards for marine wiring out there not all of them as long lasting and reliable as others. I would say that any wiring termination like crimps should be shrink wrapped using the glue lined type shrink tubing, but that is not the case with everyone. Also if you don't use...
by kmorin
Tue Jun 19, 2012 12:27 pm
Forum: Welcome New Members
Topic: New from Ga
Replies: 14
Views: 7436

sled jig!!!

Whiskeybent, that is one very impressive jig!!! I've never used anything that extensive before, and just as a note you don't need it to build a small skiff as they will almost self-jig, but it sure will allow you to tack up without too much difficulty! I'd go ahead and put tape on the inside surface...
by kmorin
Sat Jun 16, 2012 4:06 pm
Forum: Welcome New Members
Topic: New from Ga
Replies: 14
Views: 7436

Sled Contruction

Whiskeybent, sounds like you're getting geared up, all the steps will be of some help but the pictures would make that guess a fact. Welding wise, what power supply to do have for the spool gun and what model is the gun, that helps to understand some practice exercises. Deciding how 'finished' the b...