Bruce,

To answer your question, I have no idea.  For many years the gauge on my
adjuster was unreadable.  As part of the recent repair, a new gauge was
installed.  I still have no plans to look at it.

First, the reading is only an indicator.  It shows hydraulic pressure
inside the cylinder.  This NOT the same as tension on the backstay.  For
that, you have to know the diameter of your piston and do some math.

You really should be looking at the sail shapes.  On Touche' we adjust the
tension and take a quick peek at our adjuster position indicator, a dinghy
batten taped to the backstay adjuster.  The batten has colored tape at
intervals in the operating range.  Look here:

https://drive.google.com/file/d/15VQF_A2X3ZNBW5ZPueAaJ9mw23X8YsQH/view?usp=sharing

Zoom in to the top of the batten.  You should be able to see 4 pieces of
colored tape; green (light tension), yellow (moderate tension), red (heavy
tension) and black (OMG, we're going to die!).  These pieces of tape do not
correlate to the gauge pressure in any meaningful way.

We know from experience approximately where to set the bottom of the head
of the ram against the tapes.

At the dock, I leave it set towards the top of the green tape.  I give the
backstay a grab and shake and say "that's about right".  I think that
correlates to 600-800 on the gauge.
-- 
Dennis C.
Touche' 35-1 #83
Mandeville, LA

On Sun, Apr 18, 2021 at 1:06 PM Bruce Whitmore via CnC-List <
cnc-list@cnc-list.com> wrote:

> Hello all
>
>  With all of the discussions about hydraulic backstay adjusters, and mine
> being fixed (finally), where do most of you keep and use the pressure?  At
> the dock vs. sailing and under what conditions?
>
> Thanks!
>
> Bruce Whitmore
> 1994 C&C 37/40+
> Thanks to all of the subscribers that contributed to the list to help with
> the costs involved.  If you want to show your support to the list - use
> PayPal to send contribution --   https://www.paypal.me/stumurray  Thanks
> - Stu
Thanks to all of the subscribers that contributed to the list to help with the 
costs involved.  If you want to show your support to the list - use PayPal to 
send contribution --   https://www.paypal.me/stumurray  Thanks - Stu

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