Originally Posted by sailingdog
You might be better off asking this question on a Columbia owners group, rather than a general forum.
That said, do you trust your sail maker? If so, why are you questioning his recommendation? Has he given you a reason to? Has he any experience with the same type of boat?
Also, if the original boats of the same make had gennys as big as a 170, why is a 155 such an issue?
How do you read my post above as beeing "such an issue"? I merely asked for peoples technical opinion about sheeting well aft of the luff of the main.
Do you put blind faith in your sailmaker?Thats not a very smart thing to do, many sailmakers have different opinions about sail construction,materials, overlap and so on. I put faith in a well known sailmaker for the #1 and what I got was a piece of crap that's going in the trash.
I highly doubt that there's a Columbia owners group discussing a boat of which only 140 were built.
I think the question is more general than that, Let me explain it to you. When you sheet the jib well aft of the main, on a narrow hull, you will back wind most of the main going to windward unless you stall the main by oversheeting, obviously not good. So on a Sabre which has a 6'3" beam does it make sense to try and maximize the head sail for windward work or drop down to a 120-130 and maintain the draft in the main, roughly 50% of the way aft so that both sails work together.
I know that Jeff is familiar with this boat hopefully he can give me some constructive input.