Inter 20 Manual
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Sam Carter
Jun 27, 2013, 2:50:02 PM6/27/13
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John Geiger asked for this at the bar Tuesday, found it looking for something else today:
http://www.nacra.ca/images/manuals/Nacra%20Manuals.pdf
Also, Murrays has these Inter-20 rudder blades on serious closeout: http://www.murrays.com/mm5/merchant.mvc?Screen=PROD&Product_Code=56-4580&Category_Code=C-PF&Store_Code=MS
They appear to be similar to the Gen-1 shape but I'm not 100% sure. One difference between the Nacra 20 and the Inter 20 is I believe the Nacra 20 has Gen 3 blades, both Gen 1 and Gen 3 fit on the same rudder hardware. Gen 1 are narrow (see Chris' boat), Gen 3 are fat (see my boat). Anyway, Gen-1's are very fast in a straight line and give more instantaneous feedback. Gen 3's are nice on the start line but don't help much when you park it head to wind at 10 seconds to go. They're also more forgiving at mark roundings, but are pretty sensitive downwind in a blow, upside is more margin to drive down when that windward hull gets sky high. If you need a spare rudder blade you aren't going to beat $200 for a brand new one.
-Sam
http://www.nacra.ca/images/manuals/Nacra%20Manuals.pdf
Also, Murrays has these Inter-20 rudder blades on serious closeout: http://www.murrays.com/mm5/merchant.mvc?Screen=PROD&Product_Code=56-4580&Category_Code=C-PF&Store_Code=MS
They appear to be similar to the Gen-1 shape but I'm not 100% sure. One difference between the Nacra 20 and the Inter 20 is I believe the Nacra 20 has Gen 3 blades, both Gen 1 and Gen 3 fit on the same rudder hardware. Gen 1 are narrow (see Chris' boat), Gen 3 are fat (see my boat). Anyway, Gen-1's are very fast in a straight line and give more instantaneous feedback. Gen 3's are nice on the start line but don't help much when you park it head to wind at 10 seconds to go. They're also more forgiving at mark roundings, but are pretty sensitive downwind in a blow, upside is more margin to drive down when that windward hull gets sky high. If you need a spare rudder blade you aren't going to beat $200 for a brand new one.
-Sam
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