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  #1  
Old 05-29-2009
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Templating a keel

My friend and I are going to start on the keel templating project on his Ranger 22. Anyone done it? Any tips?
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Old 05-29-2009
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I would buy the templets water jet cut becasue your going to be in for enough work shaping the keel


Does the class have any rules ? on a J24 you cant fair the keel sump becasue its part of the hull
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Last edited by tommays; 05-29-2009 at 03:01 PM.
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Old 05-29-2009
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Water jet cut templates are not available. In fact no templates are available. The only thing we have is a class rules PDF written in Portuguese with a few keel measurements on the last few pages. We took those measurements and measurements from the keel and input them into a program called Winfoil that's designed for model airplane wings, then generated a NACA foil shape that's very close. Winfoil will generate lofted templates based on the chord of the top vs chord of the bottom. Tonight we'll make templates out of whatever we can find at the hobby store. Then it's time to pull our party hats way down over our ears, 'cause the fun is just beginning.

As far as class rules go, it took hours of searching the internet to find some that are written in Portuguese, there are none in english. I doubt that anyone is going to spend the time to search them out, then translate them, over the grand prize of a bottle of spice rum. Also, there is no keel sump. The keel bolts directly to the flat bottom of the boat so no worries about hull modification.
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Old 05-31-2009
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Tip 1. Power planers are great tools for removing excess lead - until they blow apart and send shrapnel across the shop.
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Old 06-06-2009
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Tip 2. SPRAY MIST COOLANT SYSTEMS

It keeps the tool from loading up with material and the blade from reaching temperature X which is were it turns to junk and melts the base material

I ROUTER a LOT of Aluminum parts and its a MUST
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If a dirty bottom slows you down what do you think it does to your boat
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Old 06-06-2009
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Quote:
Originally Posted by tommays View Post
Tip 2. SPRAY MIST COOLANT SYSTEMS

It keeps the tool from loading up with material and the blade from reaching temperature X which is were it turns to junk and melts the base material

I ROUTER a LOT of Aluminum parts and its a MUST
I didn't see any of those at home depot.
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Old 07-27-2009
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Here's something in english!

Keel Measurement

Cheers,

MikeR
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Old 07-27-2009
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Sorry, thought you wrote j22

Sorry about that.

MR
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Old 08-01-2009
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I found the class rules from Brazil.
I'll post the link next.

The keel template is on page 25.

measurements are in "mm"

"secao" can be assumed to mean "section"

the stations (1-10) are just evenly distributed along the chord.

good luck

-m
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Old 08-01-2009
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http://www.ranger22.com.br/documents...22-dez2004.pdf
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