Sail design - luff vs boom length

> 10 years ago
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GusTee
GusTee
NSW
266 posts
NSW, 266 posts
12 Jan 2013 4:21pm
What are the pro's and cons of longer boom length and shorter luff and vice versa for a given sail size?

Eg:
Brand A, Freeride sail 6.6m, 456 luff, 204 boom.
Brand B, Freeride sail 6.6m, 464 luff, 188 boom.
gavnwend
gavnwend
WA
1374 posts
WA, 1374 posts
12 Jan 2013 2:43pm
Ask a sail designer ? Good Question I have always wonder myself but with all the r&r testing going on I would say the shorter boom length would be the better sail easier to jibe or tack
petermac33
petermac33
WA
6415 posts
WA, 6415 posts
12 Jan 2013 4:41pm
A sail with a shorter boom length can actually be wider than the other sail of same size.

Had a Reflex 11 5.6m that was extremely short luff and wide design,but had a massive boom cutout.

Short luff design, i think have more bottom end,downside is it's more difficult for the sail to spill the wind.




Gestalt
Gestalt
QLD
14953 posts
GusTee
GusTee
NSW
266 posts
NSW, 266 posts
19 Jan 2013 10:15am
I've read the suggested link, This is a quite complicated topic. There are too many variables and considerations. In a nutshell, it looks like it's not a good idea to compare sails just based on these two measurements.
Gestalt
Gestalt
QLD
14953 posts
QLD, 14953 posts
19 Jan 2013 11:01pm
yep. that's it in a nut shell as you also need to know specifcation like draft depth/position and twist. in 2 sails of exact same dimensions if you vary those 2 elements the sails would feel and handle quite diferently.

but there are very general rules of thumb mentioned at the start of the thread.
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