RS5 rotation advice

> 10 years ago
Reply
Register to post, see what you've read, and subscribe to topics.
4XL
4XL
VIC
222 posts
4XL 4XL
VIC, 222 posts
17 Jul 2006 8:16am
any advice on optimising the rotation especially in the first cam from the foot would be appreciated. I'm using a 490RS Pryde mast for a 7.8m RS5 sail. I understand that they require a fair whack when you come out of a gybe, which is not problem. Is there anything that i can do to the cams etc.....advice appreciated

Cheers

s
mkseven
mkseven
QLD
2315 posts
QLD, 2315 posts
17 Jul 2006 8:54am
whilst not rs5 specific, most sails you can cut a small v in the cam where it contacts the batten pocket.
Jethrow
Jethrow
NSW
1282 posts
NSW, 1282 posts
17 Jul 2006 10:31am
Have you removed the chocks? My RS5 11.6 had nearly 2mm of small plastic chocks packing it towards the mast. Removing these reduces the compresion on the mast. It is like reducing the luff curve by a few mills. I only took out one of the three chocks and it made a difference.
mkseven
mkseven
QLD
2315 posts
QLD, 2315 posts
17 Jul 2006 10:38am
they call em cam/batten shims, i didnt know if the rs5's would have em from the factory... imo they shouldnt as they should be made to perfectly complement the recommended mast and should only be required for different masts or when the sails stretches. Increasing cam pressure can in some cases increase mast curve, you have to be carefull modifying the bottom cams because of this (it can upset the set of the bottom section of the sail).
4XL
4XL
VIC
222 posts
4XL 4XL
VIC, 222 posts
17 Jul 2006 1:45pm
yeah, i got rid of the spacers (first thing i did). That was the first thing that i did. Is there any need to modify the cam itself to help rotation etc?

cheers
qldsalty
qldsalty
QLD
299 posts
QLD, 299 posts
17 Jul 2006 3:27pm
Are using the right amount of downhaul. Measure your extention against a NP extention to get the right measurement. I got an RS6 8.4 this weekend and the gods sent a NE 20kt+ wind on Sat to test it out. The first time I was short of the downhaul true measurement using a Chinook euro pin ext. The rotation was terrible. The next day went out again with the correct measure and it rotated a lot better. There was no wind the second day yet it popped through with a lot less effort. Also if your sail is new they stretch after a couple of uses. My previous 2005 V8 took about 5 sails to settle in. After that it was great. I suspect these race sails are the same.
Gestalt
Gestalt
QLD
14968 posts
QLD, 14968 posts
17 Jul 2006 3:50pm
jeez qldsalty.,,,,

can you let us in on your secret spot....

wello was dead on saturday....

sorry for the hijack..

re, gestalt.
qldsalty
qldsalty
QLD
299 posts
QLD, 299 posts
17 Jul 2006 4:27pm
Just Caloundra passage. Very nice mid winter sail. Check out Spitfire channel on BOM. A good crew showed up too. Used a 34 cm fin most of the afternoon as the 41 was lifting board out and tail walking. I nearlly went to Kirra after reading the posts here to try out wave sailing on the Gold Coast. But the arrival of the RS6 was to compelling. What is the best wind to sail Kirra. Can't imagine sailing there.
mkseven
mkseven
QLD
2315 posts
QLD, 2315 posts
17 Jul 2006 4:42pm
biggbuttfast you should have left them there, i suggest before you touch the cam to put some shims on the cams in the centre of the sail- because you have removed some it could be putting extra pressure on that bottom cam. I try to have all my cams with similar pressure provided it dosent force fullness in the top 3rd of the sail.
Gestalt
Gestalt
QLD
14968 posts
QLD, 14968 posts
18 Jul 2006 5:26pm
qldsalty,

nice one.

i thought you might have been over at manly, there saeemed to be heaps of wind on the other side of the bay. the skiffs were flying.



qldsalty
qldsalty
QLD
299 posts
QLD, 299 posts
18 Jul 2006 8:01pm
No haven't been to Wello or Manly for 7 years. I live at Redcliffe now so no point travelling really. However this year might get there if QLD windsurfing has a race or two there. Like a lot of other sailors I'm fired up to get flogged racing this season. It is quite good fun when there is a strong fleet.
Please Register, or first...
Topics Subscribe Reply