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  #1  
Old 09-25-2007
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Cal 30 Polar Diagrams?

Does anyone have polar diagrams for a Cal 30?

Family members race one, and would be very excited to get a copy. I figure it's worth a try, someone may have this information.

Thanks.
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Old 11-17-2007
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cal 30 diagrams/specs

Hello Winter River,

Just signed on to this site. Looking for rudder specs for Jensen cal30, modified full keel model. Any thoughts or input on this is greatly appreciated.Need to have a new rudder fabricated, but need the right numbers.

Mahalo from O'ahu,
Leonard
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Old 11-28-2007
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Sorry, Cal30, I wish I could help you. There seems to be very little information about these boats on the web.

It's not my boat, so I haven't looked into owner groups, etc. There must be someone with some information for you out there.
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Old 04-15-2012
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Re: Cal 30 Polar Diagrams?

This is for CAL36

TWA 6 8 10 12 14 16 20
52 4.6 5.5 6.1 6.3 6.5 6.6 6.7
60 5.0 5.9 6.4 6.6 6.8 6.9 7.0
75 5.4 6.2 6.7 6.9 7.1 7.3 7.4
90 5.6 6.4 6.8 7.1 7.2 7.5 7.7
110 5.5 6.4 6.9 7.2 7.5 7.7 8.0
120 5.2 6.2 6.7 7.2 7.5 7.8 8.3
135 4.5 5.6 6.4 6.8 7.2 7.6 8.3
150 3.8 4.8 5.7 6.4 6.8 7.2 7.9
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Re: Cal 30 Polar Diagrams?

Cal40


twa 6 8 10 12 14 16 20
52 4.6 5.6 6.2 6.5 6.7 6.8 6.9
60 5.1 6.1 6.6 6.8 7.0 7.1 7.2
75 5.5 6.4 6.9 7.2 7.4 7.5 7.6
90 5.6 6.6 7.0 7.3 7.5 7.7 8.0
110 5.5 6.5 7.0 7.4 7.7 8.0 8.3
120 5.2 6.3 6.9 7.3 7.7 8.0 8.5
135 4.5 5.7 6.5 7.0 7.4 7.8 8.4
150 3.8 4.8 5.8 6.5 6.9 7.3 8.0
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Re: Cal 30 Polar Diagrams?

this for CAL 239


TWA 6 8 10 12 14 16 20
52 5.2 6.1 6.6 6.9 7.0 7.1 7.1
60 5.6 6.5 6.9 7.1 7.3 7.4 7.4
75 5.9 6.8 7.2 7.5 7.7 7.8 7.9
90 6.1 7.0 7.3 7.6 7.8 8.0 8.2
110 6.0 7.0 7.5 7.8 8.1 8.2 8.5
120 5.7 6.8 7.3 7.8 8.1 8.4 8.8
135 5.0 6.2 6.9 7.4 7.9 8.2 8.9
150 4.2 5.2 6.2 6.9 7.4 7.8 8.5
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