Dan's Zip

Outboard designs up to 14'

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Roberta
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Re: Dan's Zip

Postby Roberta » Wed Jul 22, 2015 4:02 am

I don't think there is a real answer for the chine height. It should be a natural curve. I think mine is about half way between the breasthook and the bottom of the stem.

Roberta :D
Roberta "Queen of the Boat Builders"
Built Zip "Oliver IV", Super Spartan "Jimmy 70", and Torpedo "The Glen L".

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BarnacleMike
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Re: Dan's Zip

Postby BarnacleMike » Wed Jul 22, 2015 4:06 am

Dan,

I don't think there's a set rule on how high the chine should land on the stem... but rather, wherever the chine naturally tends to land should be fine. The important thing is that both chines end at the same height.

(For what it's worth, I forced mine downward toward the keel about an inch from their "natural position" because I didn't want them running too high on the stem.)

The key thing to watch, rather than where they land on the stem, is the amount of twist in the chine from the forward frame to the stem. If you don't get enough twist in the chine, then you could wind up having to laminate additional strips onto the chine so that your side planking has enough surface area to attach to.

Here's a graphic to show what I'm talking about:

Image
-Michael

Built Utility "Perseverance" — completed Aug 2016
Currently building a Zip
My Boatbuilding Blog: http://barnaclemikeboats.blogspot.com/
My Website of Boat Photos: https://michaelsmaddox.wordpress.com

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Andy Garrett
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Re: Dan's Zip

Postby Andy Garrett » Wed Jul 22, 2015 5:36 pm

Study other Zip builds and read carefully. Placement and 'twist' of the chines is important and will bite you in the butt later if done incorrectly.

I made such a mistake and it was only noticed when I set my sheers and then laid a straight edge across from sheer to stem. This revealed that my chine was not flexed outward enough. The fix is well documented on my build thread and a few others. Best to avoid the issue than learn to fix it though.
Andy Garrett

Perhaps the slowest Zip build in Glen-L history...

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Roberta
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Re: Dan's Zip

Postby Roberta » Thu Jul 23, 2015 4:15 am

When bending the chine and shears, you will get a better arc if they are anchored on the stem first and then bent back towards the stern.

Roberta :D
Roberta "Queen of the Boat Builders"
Built Zip "Oliver IV", Super Spartan "Jimmy 70", and Torpedo "The Glen L".

dcarbone
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Re: Dan's Zip

Postby dcarbone » Sun Jul 26, 2015 8:12 am

Thanks for all the great advice! so the steam worked great really didn't have to struggle to bend and twist it and I attached them to the stem where they landed naturally and looks great I hope to start bending the sheers today as well
Attachments
IMG_1378.JPG

gdcarpenter
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Re: Dan's Zip

Postby gdcarpenter » Sun Jul 26, 2015 5:19 pm

No hard and fast answer for chine to stem landing. Think mine was about 8" below the breasthook. Make sure your Chinese have enough 'bend' near forward that your side/bottom junction of the hull ply will form a convex curve outwards. The amount of twist also affect maintaining an outward curve of the 'skin' at the chine junction, the more twist the better - essentially.
This is my first, last and only boat build.

http://www.gdzipbuild.blogspot.com

dcarbone
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Re: Dan's Zip

Postby dcarbone » Mon Jul 27, 2015 2:16 pm

sheers are in place and the last one is cooling hope to glue it all together tomorrow and start the fairing process!

p.s sorry for the sideways pictures
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image1.JPG

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Bill Edmundson
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Re: Dan's Zip

Postby Bill Edmundson » Mon Jul 27, 2015 2:26 pm

Dan

Lines look great to me.

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

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Andy Garrett
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Re: Dan's Zip

Postby Andy Garrett » Mon Jul 27, 2015 2:45 pm

Now..., AFTER FAIRING...,

Lay a yard stick or straight edge cross that area at all angles imaginable.

If you contact the stem and the sheer without touching the chine, you have corrections to make.
Andy Garrett

Perhaps the slowest Zip build in Glen-L history...

dcarbone
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Re: Dan's Zip

Postby dcarbone » Sun Aug 02, 2015 6:04 pm

does anyone have any pictures of there stem to frame 5 1/2 so I can see how it should look when faired?

ive been fairing the sides for now and just want to make sure I do the stem right been trying to see others work but no great shots of the ones I find thanks for the help - Dan

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BarnacleMike
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Re: Dan's Zip

Postby BarnacleMike » Mon Aug 03, 2015 5:31 am

Dan,

Take a look at Vupilot's Zip Gallery. You should see the link in the signature of one of his posts. He documented his Zip build very well, and you'll probably find what you're looking for there.
-Michael

Built Utility "Perseverance" — completed Aug 2016
Currently building a Zip
My Boatbuilding Blog: http://barnaclemikeboats.blogspot.com/
My Website of Boat Photos: https://michaelsmaddox.wordpress.com

dcarbone
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Joined: Tue May 19, 2015 6:34 am

Re: Dan's Zip

Postby dcarbone » Tue Aug 04, 2015 1:57 pm

yea I looked at his very well built but didn't have the close up shots I was looking for
thanks

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gap998
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Re: Dan's Zip

Postby gap998 » Tue Aug 04, 2015 3:17 pm

Check out Josh Burkes's Youtube channel "Building the Zip" - Maybe something there?

Member joshuab on here - "New member from Oregon" forum thread (nothing on the stem to frame on the thread though)
Gary

Planning a whole fleet, but starting with a Zip...I think.

"Just when you think you've made something idiot-proof, someone builds a better idiot!"

joshuab
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Re: Dan's Zip

Postby joshuab » Thu Aug 06, 2015 1:26 pm

Might be able to see what your looking for here
Attachments
IMAG1088.jpg
Stem / 5 1/2 fairing
I cut twice and it's still too short :mrgreen:

bjfrater
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Re: Dan's Zip

Postby bjfrater » Thu Aug 06, 2015 3:04 pm

Hi Dan

Maybe these pictures from my zip might help?
Attachments
20141129_165704.jpg
20141129_124042.jpg
20141129_120448.jpg


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