Boats For Sale:
Cold weather pondering-hull design '70's SN |
Post Reply 
|
Page <123 |
| Author | |
KENO 
Grand Poobah 
Joined: June-06-2004 Location: United States Status: Offline Points: 10640 |
 Post Options
 Thanks(0)
 Quote Reply
 Posted: December-11-2017 at 2:55pm |
|
You could slap in a new style permanent magnet starter, it weighs about half of what your old one does.
Advertised weight of 9 pounds, compared to advertised weight of 18 pounds for the old style. |
|
 |
|
|
Gary S
Grand Poobah
Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
Post Options
Thanks(0)
Quote Reply
Posted: December-11-2017 at 3:59pm |
|
Doubtful you'll find an aluminum timing cover with a water pump mount but you could go with a crank mount pump. Ditch the circulation pump like HM did but be prepared that they cool differently.
|
|
|
|
|
KENO
Grand Poobah
Joined: June-06-2004 Location: United States Status: Offline Points: 10640 |
Post Options
Thanks(0)
Quote Reply
Posted: December-11-2017 at 4:21pm |
|
Maybe you should weigh the hull, or check under the floor, there could be a lot of water weight in the foam
 Or you could just tell yourself it's an 81 that's bone dry under the floor and hasn't packed on any pounds over the years. |
|
|
|
|
MourningWood
Gold Member 
Joined: June-13-2014 Location: NorCal Status: Offline Points: 885 |
Post Options
Thanks(0)
Quote Reply
Posted: December-11-2017 at 10:33pm |
|
Yes, I do plan on weighing the hull while motor/trans are out.
As nice as the boat appears to be, pretty sure it has picked up some ballast in 36 years..... |
|
|
|
|
KENO
Grand Poobah
Joined: June-06-2004 Location: United States Status: Offline Points: 10640 |
Post Options
Thanks(0)
Quote Reply
Posted: December-11-2017 at 11:13pm |
|
I figure the complete engine with manifolds and transmission weighs 856 pounds
This link explains where I came up with that number. see page 15 I think the 856 is with a B/W transmission since that's what the diagrams in the manual show The whole boat according to CC weighed 2100 pounds dry. I borrowed Pete's abacus and came up with a hull weight of about 1250 pounds as a ball park number for the hull, just to give you an idea. |
|
|
|
|
uk1979
Platinum Member
Joined: June-13-2007 Location: United Kingdom Status: Offline Points: 1410 |
Post Options
Thanks(0)
Quote Reply
Posted: December-12-2017 at 5:16am |
|
I found working on my gen 2 SNWeights
|
|
|
Lets have a go
56 Starflite 77 SN 78 SN 80 BFN |
|
|
|
|
8122pbrainard
Grand Poobah
Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
Post Options
Thanks(0)
Quote Reply
Posted: December-12-2017 at 9:17am |
Roger, Looks like documentation used for calculating flotation!  EDIT: Keith, How about putting the document Roger found in the misc./reference section? |
|
|
|
|
75 Tique
Grand Poobah
Joined: August-12-2004 Location: Seven Lakes, NC Status: Offline Points: 6097 |
Post Options
Thanks(0)
Quote Reply
Posted: December-12-2017 at 11:54am |
|
Nobody acknowledged or said anything about that old thread I linked above about reducing weight. But recent posts have talked about weight reduction other than the engine components.
Just by hull adjustments look how Paul was able to change how his boat sat in the water. 
|
|
|
_____________
“So, how was your weekend?” “Well, let me see…sun burn, stiff neck, screwed up back, assorted aches and pains….yup, my weekend was great, thanks for asking.” |
|
|
|
|
tryathlete
Platinum Member
Joined: April-19-2013 Location: Lake Villa, IL Status: Offline Points: 1796 |
Post Options
Thanks(0)
Quote Reply
Posted: December-13-2017 at 3:48pm |
|
In that case we can settle this on Deep Lake. Quinner will need to set the course up and this could be his motivation.
|
|
|
|
|
Gneil
Groupie 
Joined: December-07-2017 Location: Philadelphia Status: Offline Points: 42 |
Post Options
Thanks(0)
Quote Reply
Posted: December-13-2017 at 6:26pm |
|
Hey guys,
Im new to the group and have been loving the conversations through the forums. Thank you! I recently picked up an 81 with less than 1K hours, and considering the age, its in good shape. As most of the early fiberglass SN its likely that ill be doing a stringer job in the near future. With this in mind, Im currently doing some research into Coosa board as a substitute for doug fur stringers. I've read many forums and understand the different arguments pro and con. One topic i haven't seen is the one where modern materials like Coosa are used with carbon fiber or kevlar. Any thoughts in this direction? Additionally, I'm interested in fully documenting my rehab and recording the updates and improvements including pattern making for the stringers and related bulkheads. unless i can buy them form a reliable source. Any one know of such a thing? As I've worked in the design field for the past 25+ years, I'm computer capable. (CAD Sketch-up etc.) Any info would be greatly appreciated. |
|
|
G. Neil
1980 SN |
|
|
|
|
KENO
Grand Poobah
Joined: June-06-2004 Location: United States Status: Offline Points: 10640 |
Post Options
Thanks(0)
Quote Reply
Posted: December-13-2017 at 6:55pm |
|
Hi Greg
My first thought is that you should start a new thread you can call your own, instead of tacking on to this one It'll be easier to keep track of things that way without other peoples issues/problems mixed in. Otherwise if you've lurked here a while, you know somebody (most likely named Pete) will want to know where the pictures are. |
|
|
|
|
Gneil
Groupie
Joined: December-07-2017 Location: Philadelphia Status: Offline Points: 42 |
Post Options
Thanks(0)
Quote Reply
Posted: December-13-2017 at 8:02pm |
|
Hi Keno,
Thanks for the sage advice. I'll start a new thread and not confuse this one. I was thinking about weight with the new floor/stringer/foam etc was concerned. That was the logic. I'll start a new thread and not confuse this one. Cheers! |
|
|
G. Neil
1980 SN |
|
|
|
|
Hollywood
Moderator Group
Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13510 |
Post Options
Thanks(0)
Quote Reply
Posted: December-13-2017 at 8:16pm |
|
Good luck. Nobody seems to have wanted to pay for Kevlar or carbon fiber but they sure would be the best fabrics available. I am looking forward to your build!
|
|
|
|
|
Donald80SN
Grand Poobah
Joined: January-12-2009 Location: Denver, NC Status: Offline Points: 3887 |
Post Options
Thanks(0)
Quote Reply
Posted: December-13-2017 at 8:36pm |
|
Greg,
Several on this site, Tim B., Joe F have used CAD to design and cut the stringers and such from composite board. They put the stringers back as composite. Donald |
|
|
1980 Ski Nautique SOLD Back to Cypress Gardens
2002 Sport Nautique, GT-40, FCT2, Cover Sports, Tower Bimini, Inc., Wet Sounds Audio System, Star Gazer Wake Edition S. 1968 Ski Nautique, Project. |
|
|
|
|
Gneil
Groupie
Joined: December-07-2017 Location: Philadelphia Status: Offline Points: 42 |
Post Options
Thanks(0)
Quote Reply
Posted: December-13-2017 at 8:43pm |
|
Donald,
Thanks for the tip to Tim B and Joe F. Just doing some materials research and would like the stringer fix (if necessary) to last. I got a good price on the boat and thought the fix could afford some good planning before I start buying stuff. Thanks again. |
|
|
G. Neil
1980 SN |
|
|
|
|
Gary S
Grand Poobah
Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
Post Options
Thanks(0)
Quote Reply
Posted: December-13-2017 at 8:48pm |
|
Here is Joe's build-
The fiberglass work does not start until page 4 but the whole thread is a great read |
|
|
|
|
MourningWood
Gold Member
Joined: June-13-2014 Location: NorCal Status: Offline Points: 885 |
Post Options
Thanks(0)
Quote Reply
Posted: December-13-2017 at 10:55pm |
|
Here are some more weights:
Alternator w/ bracket: 11.0 Velvet drive 71c: 95 Battery: 51 Rear center floor: 26 Motor box (upholstered): 59.5 Biggest surprises so far, the cast iron timing cover, the super-heavy exhaust manifolds, and the motor box. And the Velvet drive. So with the changes I plan to make, this will take almost 300 lbs. off the water. I don't know if a 14.5% weight reduction alone will get the hoped-for results in wake improvement. Also, without Photobucket, what other easy ways can I post pics? Thanks |
|
|
1994 Ski Nautique "Riot"
1964 Dunphy X-55 "One 'N Dun" 'I measured twice, cut three times, and it's still too short!" |
|
|
|
|
Post Reply
|
Page <123 |
Tweet
|
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Topic Options
uk1979 wrote: