Search found 283 matches

by North
Sat Sep 10, 2016 2:45 pm
Forum: Power Boats
Topic: Double Eagle -need to tweak prop pitch or settle with pretty good
Replies: 61
Views: 9783

Re: Double Eagle -need to tweak prop pitch or settle with pretty good

Just verified #s today - top speed was off by a Knot - was a bit windy and I am getting some good growth n the bottom edges of hull, and perhaps under hull....been in the water a couple of months now with epoxy primer only - no bottom paint... will pressure was off when I take it out in a month or s...
by North
Thu Sep 08, 2016 7:07 am
Forum: Power Boats
Topic: I guess it's time to come out of the closet!Bartender 24
Replies: 1499
Views: 252794

Re: I guess it's time to come out of the closet!Bartender 24

Fantastic work Bill! Very Jealous I can't make it down to see it and all of the other examples of fine workmanship.

Maybe some day when kids are older and we have time to go.
by North
Wed Sep 07, 2016 6:25 pm
Forum: Power Boats
Topic: Double Eagle -need to tweak prop pitch or settle with pretty good
Replies: 61
Views: 9783

Re: Double Eagle -need to tweak prop pitch or settle with pretty good

It's been a while since I did the cb figuring... I have it on a full size piece of paper, but that's at the shop an hour away - wom't ne up there for a few weeks likely. I did some guesswork, but did move the cb based on the stretch - assuming that I was adding bouyancy aft, so I believe I moved the...
by North
Wed Sep 07, 2016 3:35 pm
Forum: Power Boats
Topic: Double Eagle -need to tweak prop pitch or settle with pretty good
Replies: 61
Views: 9783

Re: Double Eagle -need to tweak prop pitch or settle with pretty good

Yes shipping would be cheaper than driving. And with 2 small kids - can't really get away just to drive the prop up and back. I may wait and try and find any used prop within 14 to 16 inch diameter with a reasonable pitch so I then have a spare. More importantly, I could then always put one back on ...
by North
Wed Sep 07, 2016 1:09 pm
Forum: Power Boats
Topic: Double Eagle -need to tweak prop pitch or settle with pretty good
Replies: 61
Views: 9783

Re: Double Eagle -need to tweak prop pitch or settle with pretty good

Agreed. I need to keep the speed around 20 to 23 kts but hit it hopefully at a much more efficient rpm range.
by North
Wed Sep 07, 2016 12:03 pm
Forum: Power Boats
Topic: Double Eagle -need to tweak prop pitch or settle with pretty good
Replies: 61
Views: 9783

Re: Double Eagle -need to tweak prop pitch or settle with pretty good

I know Gordon has a heavy keel, but I am not sure that it is much larger / more wetted area, but I do have a large cutout and he does not. We are close enough to compare though, and as I mentioned if he tried to hit the theoretical 42 mph in the prop slip calculations he would never achieve near tha...
by North
Wed Sep 07, 2016 11:04 am
Forum: Power Boats
Topic: Double Eagle -need to tweak prop pitch or settle with pretty good
Replies: 61
Views: 9783

Re: Double Eagle -need to tweak prop pitch or settle with pretty good

I'll have to get a pic of it running. This extension is straight - has not bee bent up or down. But the bottom looks like it's an inch above the stream of water when running. Obviously it's running on the hull but perhaps the stern is lifted a bit and appears out of water. Question or note on your s...
by North
Wed Sep 07, 2016 9:59 am
Forum: Power Boats
Topic: Double Eagle -need to tweak prop pitch or settle with pretty good
Replies: 61
Views: 9783

Re: Double Eagle -need to tweak prop pitch or settle with pretty good

Just the bottom hull skin extended about 2 inches aft of the bottom of the transom. It allowed for an easier filet weld on outside stern rather than a outside corner weld if the hull bottom had stopped right at the transom. May see it in the bottom pic if you expand it. its like a super mini swim pl...
by North
Wed Sep 07, 2016 8:54 am
Forum: Power Boats
Topic: Double Eagle -need to tweak prop pitch or settle with pretty good
Replies: 61
Views: 9783

Re: Double Eagle -need to tweak prop pitch or settle with pretty good

ok - I will ask a couple of shops about the cupping. We are only at cottage / boat on weekend now, so I could pull the boat (have my own slip right next to docks) on Sunday, and have a shop do the cupping through the week - then try it again following weekend. I would like to try a few things, befor...
by North
Wed Sep 07, 2016 8:03 am
Forum: Power Boats
Topic: Double Eagle -need to tweak prop pitch or settle with pretty good
Replies: 61
Views: 9783

Re: Double Eagle -need to tweak prop pitch or settle with pretty good

i'll ask a shop about adding cupping. just finished your complete thread on props / bakers dozen. interesting read. don't know boat weight but off the top of my head, plans say hull at 1200 lbs, but that was for 1/8". so my 3/16" hull would be about 1800 lbs, if it were stock 23ft. I stret...
by North
Wed Sep 07, 2016 6:40 am
Forum: Power Boats
Topic: Double Eagle -need to tweak prop pitch or settle with pretty good
Replies: 61
Views: 9783

Re: Double Eagle -need to tweak prop pitch or settle with pretty good

I have not read any detailed books on props, so please excuse my ignorance... I have read definitions / explanations of slip on line, and understand some of the basic, extreme examples, explanations, but don't have a good appreciation for it still. I understand that increasing the blade area, and or...
by North
Wed Sep 07, 2016 5:05 am
Forum: Power Boats
Topic: Double Eagle -need to tweak prop pitch or settle with pretty good
Replies: 61
Views: 9783

Re: Double Eagle -need to tweak prop pitch or settle with pretty good

I think very little or none. I think I will do what you say and have my current one massaged a bit over the winter. Boat comes out in a month or so anyway.

Shipping would kill me - time and cost and waiting at borders if I were to use a big prop shop in the USA.
by North
Tue Sep 06, 2016 12:34 pm
Forum: Power Boats
Topic: Double Eagle -need to tweak prop pitch or settle with pretty good
Replies: 61
Views: 9783

Re: Double Eagle -need to tweak prop pitch or settle with pretty good

Hi Ken - and others... \i can get this brand new - old stick Michigan \wheel 15 x 17 for $350 plus shipping... thoughts?

http://www.ebay.com/itm/252474371737?_t ... EBIDX%3AIT
by North
Mon Sep 05, 2016 9:54 am
Forum: Power Boats
Topic: Double Eagle -need to tweak prop pitch or settle with pretty good
Replies: 61
Views: 9783

Re: Double Eagle -need to tweak prop pitch or settle with pretty good

Kens. I see what you mean, but here is what I know: - prop bought from a real prop shop, via ebay so I assume they may have measured / confirmed numbers - tach would not be off More than 100rpms as idle is correct and high idle about 100 from book specs. - I am not overly concerned at this point as ...
by North
Mon Sep 05, 2016 3:24 am
Forum: Power Boats
Topic: Double Eagle -need to tweak prop pitch or settle with pretty good
Replies: 61
Views: 9783

Re: Double Eagle -need to tweak prop pitch or settle with pretty good

Understood re: not overloading. On small correction Ken - yard mechanic said to aim for 2700 a finished boat. Ie after adding weight, not before.
Don't have have pic handy but I believe current prop has little to no cupping.

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