Glen-L.com

Can I lengthen Torpedo?
Some may ask why... Well I would like to go with the second cockpit option, but I'm 6'5" tall so I'm going to need some leg room.
I think the 10% is going to be more then enough, but want to make sure it does not screw everything up.... I love the way it look now......

Yes, by no more than 10% per this article:
http://www.glen-l.com/weblettr/webletters-4/webletter38.html#notebook

Thank you for your order!

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Gayle Brantuk
Vice President
Glen-L Marine
Visit our Blog & Create Your Own!

Thank you Gayle
It was a pleasure chatting with you today and look forward to receiving those links

I am building a Rampage and had a related question. The statement is that the boat can be lengthened up to 10%. However, from the article it would seem that you can only extend the spacing of the frames aft of the stem by 10% which would result in an overall length increase of less than 10%. Would someone please clarify if 10% means 10% overall or only increasing frame spacing aft of the stem by no more than 10%? Thanks.
-howard

Howard

The full 10% for the boat is added behind the stem. If you change the stem, the stem pattern won't work.

Bill

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

I just bought the full plan for the Vera and also want to add 10% between each frame. Reading the article from the link sent by Gayle and below discussion, is my understanding correct that we do not increase the length of the stem thus for the Vera, frame 5 will not sit anymore on the stem as per the plan but directly on the keel as the frame move away from frame 6 of a length of 1.1%, meaning that the height of frame 5 will need to be increased by the height of the stem?

Enclosed a drawing of how I think I should replace the frames. Make sense? Drawing is easier to understand than millions of words.

Thanks all for your time and any questions or my drawing doesn't make sense ti will be nice to know and understand how it should be done the right way.

JB from UK

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Happy sailing

JB
Belphil
UK - Philippines

Hi belphil,

I can't answer your question directly but I am also building the Vera Cruise and would love to pace my build with someone else. If you can create a new thread I will follow it rather than hijack this thread. My thread is called Building the Vera Cruise in the power boats section.

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Carl
a.k.a. Clipper

Crafting a classically styled cabin cruiser named "Some Other Time"

http://veracruise.blogspot.com/

I believe you want to add the 10% between the transom and frame 5 only. Do not increase the dim between frame 5 and 6.

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Charlie K.
Building a Flying Saucer

I believe Charlie is correct. You can add up to 10% to the total length of the boat. You distribute that extra length between frames aft of the stem.

Here is a hypothetical example:

You have plans that call for a boat that is 20' LOA. It has 6 frames (1-6) are spaced equidistant from the transom to the bow. Frame 4 abuts the aft end of the stem. You want to increase the boat the maximum amount. 10% of 20 feet is 2 feet. That extra length is distributed proportionally into the 4 spaces between the transom and frame 4, transom-1, 1-2, 2-3, 3-4. The 3 spaces between frames 4-5, 5-6, 6-bow are part of the stem and cannot be re-spaced. Since the frames are spaced evenly 2' divided by 4 is 6". So you add 6 inches between transom-1, 1-2, 2-3, and 3-4 and leave the spacing between 4-5, 5-6, and 6-bow as they are in the original drawing.

Bill, can you confirm this example?

-howard

The point I am trying to make is that the plan spacing between frames in my example would be 20x12=240" divided by 7 or about 34.29". 6" is about 17% of 34.29". So you end up increasing the spacing between the aft frames by more than 10% in order to lengthen the boat by 10%. JB may not want to increase the boat by the maximum amount, but if he did the spacing between the aft frames would increase by more than 10%. Make sense?
-h

Thanks guys for your time and responses, Now I got it. My drawing was wrong and the easier way is to replace the frames by a distance equal to the distance between each frames as per the plan multiply by 1.10 but from frame 5 and not frame 6. This will not add 10% of the total length of the Vera but will be close enough. Any comments?

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Happy sailing

JB
Belphil
UK - Philippines