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seabreezer said..
As much as it pains me - I would agree with that statement of LeeD's hoop ... He's arguing the extra luff width of sails that can rig on sdm , has to pull out some extra slack on downhaul , and same with outhaul ... I found that once selling an rdm to a guy with his SDM compatible sail - (he wanted to get into waves and needed stronger rdm's) , when RDM sleeved - had to add maybe 2-4 cm of downhaul to get same looseness leech / tension , as can stay straighter in wider luff sleeve for longer - before being forced to bend ... And outhaul ... was having to add boom length to again pull out them extra cm of mast sleeve slack built for wider SDM masts ..
I agree that the downhaul May be effected, 4 cm, a long stretch. More to the point would be that the mast bend curve of the 2 masts would so unlikely be the same, therefore account for a change.
Reference the outhaul, the front of the mast sleeve doesn't know that a reduced diameter mast is in there, the front is the front no matter how much isn't full at the rear.It's possible that a tighter curve on the RDM , vs wider on the fat one, could account for a variation, IMO so little that it doesn't deserve comment. Except to add more BS to a continue line of it.