Search found 4 matches

by celticair
Thu Apr 03, 2014 3:14 pm
Forum: General Discussion
Topic: Swift JaJa
Replies: 0
Views: 6795

Swift JaJa

It is with regret I have to put JaJa up for sale after much time put into her and my poor state of health. The specification is too extensive to put here so please sent me an E mail request. spavenmor@msn.com or tel 01736 351300. Sale includes a new Lizard Built customer trailer with Knott axle and ...
by celticair
Wed Oct 16, 2013 7:22 pm
Forum: General Discussion
Topic: Handicap woes
Replies: 11
Views: 17195

Yardstick numbers and sail setting.

I note all the comments on outboards. Does anyone know if the original PY was with an outboard in the well? There is a considerable difference in numbers for yachts with propellers and those without (See Folkboat variants). I also notice from history pictures that the original non furling genoa was ...
by celticair
Sat Oct 12, 2013 8:18 pm
Forum: General Discussion
Topic: Handicap woes
Replies: 11
Views: 17195

Yardstick numbers

Further to my earlier note I see that Byron Software services can
calculate personal PY numbers. Once my new sail plan is finalised I will submit the data to them. My in intial feeling is the Swift Number should be around
1130-1135 for sea sailing. Kind regards to all, Martin
by celticair
Sat Oct 12, 2013 5:47 pm
Forum: General Discussion
Topic: Handicap woes
Replies: 11
Views: 17195

RYA PY Numbers

Further to the queries on PY Numbers. Firstly performance. Since its first evaluation the swift has moved on with smaller Jib-Genoas. So the sail area is not 199 sq ft. This means the centre of effort and lateral resistance are out of sequence. I fine the centreboard at 40 turns is too far down so t...