Question: When I'm racing - how do I know when I am in trim - fore and aft ?? What are the indications, other than race speed, if the boat is nose down or stern down or race level ?? In that I just made up the term - what is race level: ie optium f/a trim. RD
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Based on the 35.5 Pacific Cup Winner
The 35.5 hull is the same or nearly the same as the Legend 35 and based on the Pacific Cup winner (SF to Hawaii) the preferred longitudinal alignment is to have the bow lower than the stern. I talked to Gary Baillargeon who sailed the 35.5, he is currently a salesman at H&S in San Diego, and this is what he told me. Consider that the average speed was probably hull speed. Much of the time their speed was in double-digits. I think one has to look at the stern when the boat is moving. If the water is coming back over the stern then it is causing drag and needs to come up. At low speed when water doesn't back-eddy over the stern then there would be less drag.
The 35.5 hull is the same or nearly the same as the Legend 35 and based on the Pacific Cup winner (SF to Hawaii) the preferred longitudinal alignment is to have the bow lower than the stern. I talked to Gary Baillargeon who sailed the 35.5, he is currently a salesman at H&S in San Diego, and this is what he told me. Consider that the average speed was probably hull speed. Much of the time their speed was in double-digits. I think one has to look at the stern when the boat is moving. If the water is coming back over the stern then it is causing drag and needs to come up. At low speed when water doesn't back-eddy over the stern then there would be less drag.
Stern Water
John, Your words in that last paragaraph are the most impressive I have read on this web thread - ever. I raced catamarans for many years and we always tried very hard to get the bow down so as to get the the rudder casing up and out of the water. It should have been quite clear to me that the bow was too high and the drag was there and working. With my HL35 and the walk through stern it is quite easy to see the water curling up the aft slope of the stern. Now I have to figure out how to get the bow down. Keep the water tank full - move the crew forward etc. Looking to see some improvement in my hull speed through better balance. I do not understand your last sentance in that last paragraph. It appeare to be a negative statement and is a bit difficult to figure out. Could you restate the thought. Robert
John, Your words in that last paragaraph are the most impressive I have read on this web thread - ever. I raced catamarans for many years and we always tried very hard to get the bow down so as to get the the rudder casing up and out of the water. It should have been quite clear to me that the bow was too high and the drag was there and working. With my HL35 and the walk through stern it is quite easy to see the water curling up the aft slope of the stern. Now I have to figure out how to get the bow down. Keep the water tank full - move the crew forward etc. Looking to see some improvement in my hull speed through better balance. I do not understand your last sentance in that last paragraph. It appeare to be a negative statement and is a bit difficult to figure out. Could you restate the thought. Robert
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