"Nav" wrote in message
...


Donal wrote:

"Nav" wrote in message
...

And that is between 25 -30 degrees?



Is it?

Say 1' of freeboard - I'd guess that's nearing 30 degrees. What do you
think?

It could be. I'm unlikey to be able to check it for a couple of months.

I've looked at the picture again, and zoomed in on it. The travellor is
much lower than I usually have it in those conditions.

A few years ago I was told that the boom should be on the centreline. Did I
misunderstand, or was the advice just plain wrong?

Are there any conditions where the boom should be on the centreline?

This has really got me thinking. I've never been completely happy with my
upwind performance and I've put it down to relatively cheap sails.


Regards


Donal
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Donal,

From the middle to the back ender: Advice for what's its worth, upwind
sail trim.

I set the jenney first. The car to wind conditions Normal air---car set
to put the sheet at an angle to spilt the angle of the clew Hvy
Air----farther back, Lgt air___forward. This is to increase the twist
in hvy air and release pressure aloft; lgt air----baggy shape

Sheet tension; enough tension to draw the the 150% jenny to within the
distance of about two fist from touching the end of the spreaders Normal
Air. This will increase in Hvy air slightly as you ease the sheet and
open the leech. This will increase in lgt air also but the leech will
remain closed

MAIN SAIL;
Normal air shape; Upper batten should be parallel to the boom.
Boom should be released with the traveller into the slot until the main
starts to backwind at the tack edge, then should be drawn in to just
remove the back wind bubble

If this creates a heeling greater than 20 degrees I start to increase
the twist on the jenny while watching the speed on the speed-o-meter. If
heeling is decrease without speed loss, I increase twist in MAIN to
match jenny. If I lose speed, I'll increase sheet tension on jenny until
back winding Main just a little and accepting the increase in heel.

All this is being done watching the helm, which should remain neutral
and on course. ( This is where you should be able to trim course
adjustments with the traveller))

OK Donal, my friend, I've bared my soul to the group. Let's hope we get
some help to move us up in our fleets without buying a new boat (I like
my PH) You on the other hand have a damn fast boat under you. Pay
attention to the comments of the sailors in the group.

Ole Thom

"Thom Stewart" wrote in message
...
Donal,

From the middle to the back ender: Advice for what's its worth, upwind
sail trim.

I set the jenney first. The car to wind conditions Normal air---car set
to put the sheet at an angle to spilt the angle of the clew Hvy
Air----farther back, Lgt air___forward. This is to increase the twist
in hvy air and release pressure aloft; lgt air----baggy shape

Thanks, Thom. That makes sense.



Sheet tension; enough tension to draw the the 150% jenny to within the
distance of about two fist from touching the end of the spreaders Normal
Air. This will increase in Hvy air slightly as you ease the sheet and
open the leech. This will increase in lgt air also but the leech will
remain closed

MAIN SAIL;
Normal air shape; Upper batten should be parallel to the boom.
Boom should be released with the traveller into the slot until the main
starts to backwind at the tack edge, then should be drawn in to just
remove the back wind bubble

If this creates a heeling greater than 20 degrees I start to increase
the twist on the jenny while watching the speed on the speed-o-meter. If
heeling is decrease without speed loss, I increase twist in MAIN to
match jenny. If I lose speed, I'll increase sheet tension on jenny until
back winding Main just a little and accepting the increase in heel.

All this is being done watching the helm, which should remain neutral
and on course. ( This is where you should be able to trim course
adjustments with the traveller))

OK Donal, my friend, I've bared my soul to the group. Let's hope we get
some help to move us up in our fleets without buying a new boat (I like
my PH) You on the other hand have a damn fast boat under you. Pay
attention to the comments of the sailors in the group.

It's been a very good couple of weeks for trimming advice.

I'm looking forward to trying it all out.

I'll report back to the group as soon as I get out on the water again.....
hopefully, in the next few weeks!!!!




Regards


Donal
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