Reply
 
Thread Tools Display Modes
 
Old 11-08-2010, 02:04 PM   #1
TF Site Team
 
dwhatty's Avatar
 
City: Home Port: Buck's Harbor, Maine
Country: USA
Vessel Name: "Emily Anne"
Vessel Model: 2001 Island Gypsy 32 Europa (Hull #146)
Join Date: Sep 2008
Posts: 2,730
Second off season project completed

Steering from lock to lock on our boat (Coursemaster Hydrive hydraulic system) was almost 6 turns. Too much for me, especially in a following sea. The sole US Hydrive rep said to buy a new ram and helms (for two stations), which would have been very expensive. But when I said I couldn't afford that, he got very helpful and suggested, if my tiller arm setup and rudder stops would allow it, to move the pivot point where the ram connects to end of the tiller arm in from 8" from the center of the rudder shaft to 6" from it. He said steering effort might go up a bit.

So, with a little machining and moving of the attachment points of the rudder indicators, I did it.

Now I have 4 turns lock to lock and steering effort is barely noticeable. Before the change, there was zero effort which was a bit disconcerting to me
Attached Thumbnails
Click image for larger version

Name:	dscn0109.jpg
Views:	72
Size:	199.2 KB
ID:	3403  
__________________
Advertisement

dwhatty is offline   Reply With Quote
Old 11-09-2010, 05:24 AM   #2
Guru
 
jleonard's Avatar
 
Join Date: Jun 2008
Posts: 2,734
RE: Second off season project completed

Good deal! Isn't it great when you can make a nice *improvent for almost free?
__________________

jleonard is offline   Reply With Quote
Old 11-09-2010, 10:23 AM   #3
Guru
 
Codger2's Avatar
 
City: San Diego
Country: US
Vessel Name: "Sandpiper"
Vessel Model: 2006 42' Ocean Alexander Sedan
Join Date: Oct 2007
Posts: 5,420
RE: Second off season project completed

Quote:
dwhatty wrote:Now I have 4 turns lock to lock and steering effort is barely noticeable. "Before the change, there was zero effort which was a bit disconcerting to me"
Dave:*
Obviously I have the same problem and am excited about your fix. I agree,
that having "no" resistance on the helm is just a little unnerving. I'm assuming you
still have full angle on the rudder when the helm is hard over.

*
Codger2 is online now   Reply With Quote
Old 11-09-2010, 11:20 AM   #4
TF Site Team
 
dwhatty's Avatar
 
City: Home Port: Buck's Harbor, Maine
Country: USA
Vessel Name: "Emily Anne"
Vessel Model: 2001 Island Gypsy 32 Europa (Hull #146)
Join Date: Sep 2008
Posts: 2,730
RE: Second off season project completed

Quote:
SeaHorse II wrote:
I'm assuming you still have full angle on the rudder when the helm is hard over.
Affirmative. But, I was told by the Coursemaster rep to try not to jamb the tiller arm hard against the rudder stops as the ram now isn't fully, or close to fully, out (or in) when the tiller arm hits the stops. He was concerned about the amount of force the ram could continue to exert.

*
dwhatty is offline   Reply With Quote
Old 11-09-2010, 11:30 AM   #5
Guru
 
jleonard's Avatar
 
Join Date: Jun 2008
Posts: 2,734
RE: Second off season project completed

Make the srops stronger and add a poly bumper??
jleonard is offline   Reply With Quote
Old 11-09-2010, 11:50 AM   #6
TF Site Team
 
dwhatty's Avatar
 
City: Home Port: Buck's Harbor, Maine
Country: USA
Vessel Name: "Emily Anne"
Vessel Model: 2001 Island Gypsy 32 Europa (Hull #146)
Join Date: Sep 2008
Posts: 2,730
RE: Second off season project completed

Quote:
jleonard wrote:

Make the srops stronger and add a poly bumper??
I think the stops are strong enough. Perhaps the concern was more possible damage to the ram?

*
dwhatty is offline   Reply With Quote
Old 11-09-2010, 01:03 PM   #7
Guru
 
Nomad Willy's Avatar
 
City: Concrete Washington State
Country: USA
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 13,701
RE: Second off season project completed

I use the "ram" AS a stop. It sorta sticks if put really hard over but I asked the mechanics at Harbor Marine (where we bought the components) if that was acceptable practice and they had to call the manufactures in Canada. They said yes it was OK to do.
My system is not anywhere near zero resistance. The components are so big I think I have excessive seal friction. The helm is a "Capilano" and it has an adjustment screw that enables one to choose (with my ram) from 2.25 to 5.8 turns L to L. I keep it adjusted at 2.75 TLL. More friction than I'd like but tolerable in big following seas.
Nomad Willy is online now   Reply With Quote
Old 11-09-2010, 01:53 PM   #8
TF Site Team
 
dwhatty's Avatar
 
City: Home Port: Buck's Harbor, Maine
Country: USA
Vessel Name: "Emily Anne"
Vessel Model: 2001 Island Gypsy 32 Europa (Hull #146)
Join Date: Sep 2008
Posts: 2,730
RE: Second off season project completed

Quote:
nomadwilly wrote:

I use the "ram" AS a stop. It sorta sticks if put really hard over but I asked the mechanics at Harbor Marine (where we bought the components) if that was acceptable practice and they had to call the manufactures in Canada. They said yes it was OK to do.
My system is not anywhere near zero resistance. The components are so big I think I have excessive seal friction. The helm is a "Capilano" and it has an adjustment screw that enables one to choose (with my ram) from 2.25 to 5.8 turns L to L. I keep it adjusted at 2.75 TLL. More friction than I'd like but tolerable in big following seas.
Would love to have the adjustable lock to lock. That's a great reature. But the cost of retrofitting two helms and possibly the ram as well is not financially justifiable for us. I notice that Hydrive now makes a helm unit with adjustable feedback. That would be a nice feature to have as well.
dwhatty is offline   Reply With Quote
Old 11-09-2010, 04:20 PM   #9
Guru
 
Nomad Willy's Avatar
 
City: Concrete Washington State
Country: USA
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 13,701
RE: Second off season project completed

If you use the slave cylinder as a rudder stop (as I have done) you achive greater mechanical advantage. 100 % of the travel of the cylinder is used so the attach point on the rudder horn can be further out on the horn**** ...hence greater mech advantage.
The rudder stops dwhatty shows would be easy to make and install. I should do that and adjust the stop so the piston gets stopped just a tad before the end of piston travel. My rudder has 45 degrees deflection so I could afford a loss of 1%.
__________________

Nomad Willy is online now   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Season is over (too) early dwhatty General Discussion 11 09-23-2011 10:49 AM
Football Season is Soon Doc Harbor Chat 3 08-27-2011 07:42 AM
One off season project completed dwhatty Power Systems 10 11-09-2010 10:05 PM
Launched for the season today! dwhatty General Discussion 5 05-12-2010 07:53 PM
Almost Completed Project Allan General Discussion 3 02-09-2009 04:47 AM




All times are GMT -5. The time now is 09:33 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012