Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 16-09-2015, 10:16   #31
Registered User
 
Mike OReilly's Avatar

Join Date: Sep 2011
Location: Good question
Boat: Rafiki 37
Posts: 4,032
Re: Shaft turning while sailing, Perkins PRIMA 50M

Quote:
Originally Posted by ctl411 View Post
Mike, I have a velvet drive also. I found a manual online for Chris Craft. It states "under sailing or slow trolling conditions one or both transmissions can be left spinning. The transmission was designed for this". That said my boat had a caliper disk brake with a starter lockout to prevent turning with the brake on. I used it because the noise from the shaft. Now I have a Max prop and took the brake caliper off.
Thanks ctl411, this is very helpful. It's what I've heard in the past regarding velvet transmissions, but as I say, it's always bothered me to hear the shaft turning while having a nice quiet sail. Our shaft is very difficult to reach, so any brake system would have to use a remote setup ... I'd love to install something like what you have. Perhaps a feathering prop would be best (if I could spare the cash), but I'll probably just put up with the small noise. As long as it's not doing any harm to the transmission I can probably live with it.
__________________

__________________
Why go fast, when you can go slow.
BLOG: www.helplink.com/CLAFC
Mike OReilly is online now   Reply With Quote
Old 16-09-2015, 10:50   #32
Registered User

Join Date: May 2009
Location: holland michigan
Boat: Gulfstar 50 ketch
Posts: 456
Images: 3
Re: Shaft turning while sailing, Perkins PRIMA 50M

Mike we had a big bucket of a 3 blade. Found a 2 blade max on eBay. Big difference in sailing at slower sailing speeds 5 knots and under.
__________________

__________________
ctl411 is offline   Reply With Quote
Old 17-09-2015, 06:05   #33
Registered User

Join Date: Jun 2015
Location: Onboard Sea Scamp
Boat: South Coast 36
Posts: 36
Images: 10
Re: Shaft turning while sailing, Perkins PRIMA 50M

Great news guys, check this out, got a hold of a Manual and found what I been looking for, got to have a win every now an then.

Cheers

Shane & Tracey
Attached Thumbnails
Click image for larger version

Name:	12007032_10153285721386559_97031604_n[1].jpg
Views:	55
Size:	142.1 KB
ID:	109197   Click image for larger version

Name:	12028936_10153287060351559_257517168_n[1].jpg
Views:	57
Size:	98.7 KB
ID:	109198  

__________________
Sea Scamp is offline   Reply With Quote
Old 17-09-2015, 06:28   #34
Moderator
 
HappyMdRSailor's Avatar

Cruisers Forum Supporter

Join Date: May 2008
Location: North Mississippi
Boat: 48 Wauquiez Pilot Saloon-C22 Chrysler Sunpiper- 19 Potter-Preparing to cruise w/my girl
Posts: 5,980
Re: Shaft turning while sailing, Perkins PRIMA 50M

Quote:
Originally Posted by Mike OReilly View Post
Thanks ctl411, this is very helpful. It's what I've heard in the past regarding velvet transmissions, but as I say, it's always bothered me to hear the shaft turning while having a nice quiet sail. Our shaft is very difficult to reach, so any brake system would have to use a remote setup ... I'd love to install something like what you have. Perhaps a feathering prop would be best (if I could spare the cash), but I'll probably just put up with the small noise. As long as it's not doing any harm to the transmission I can probably live with it.
Mike,

The Morgan has a remote lever/cable for the shaft lock... pretty simple setup... I've got a disk, but there's no reason you couldn't just make a simple bar/lever/lining to use as a brake? $30??? Probably doesn't need that much force, and forgetting to un-brake on start would be ok if you applied it just enough to stop the shaft? Maybe worth monkeying around with ??? (no offense to the salty one of course)
Attached Thumbnails
Click image for larger version

Name:	Mike's shaft brake.jpg
Views:	62
Size:	47.6 KB
ID:	109199  
__________________
In the harsh marine environment, something is always in need of repair...

Mai Tai's fix everything...
HappyMdRSailor is offline   Reply With Quote
Old 17-09-2015, 06:29   #35
Moderator
 
HappyMdRSailor's Avatar

Cruisers Forum Supporter

Join Date: May 2008
Location: North Mississippi
Boat: 48 Wauquiez Pilot Saloon-C22 Chrysler Sunpiper- 19 Potter-Preparing to cruise w/my girl
Posts: 5,980
Re: Shaft turning while sailing, Perkins PRIMA 50M

Quote:
Originally Posted by Sea Scamp View Post
Great news guys, check this out, got a hold of a Manual and found what I been looking for, got to have a win every now an then.

Cheers

Shane & Tracey
AWESOME!!!
__________________
In the harsh marine environment, something is always in need of repair...

Mai Tai's fix everything...
HappyMdRSailor is offline   Reply With Quote
Old 17-09-2015, 11:16   #36
Registered User
 
Mike OReilly's Avatar

Join Date: Sep 2011
Location: Good question
Boat: Rafiki 37
Posts: 4,032
Re: Shaft turning while sailing, Perkins PRIMA 50M

Quote:
Originally Posted by HappyMdRSailor View Post
Mike,

The Morgan has a remote lever/cable for the shaft lock... pretty simple setup... I've got a disk, but there's no reason you couldn't just make a simple bar/lever/lining to use as a brake? $30??? Probably doesn't need that much force, and forgetting to un-brake on start would be ok if you applied it just enough to stop the shaft? Maybe worth monkeying around with ??? (no offense to the salty one of course)
Thanks Happy, this might work. I'll give it a try next season when we get away again.
__________________

__________________
Why go fast, when you can go slow.
BLOG: www.helplink.com/CLAFC
Mike OReilly is online now   Reply With Quote
Reply

Tags
perkins, sail, sailing

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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
Sailing from st malo to Sete and need 2 crew/skipper. Boat: pogo 10.50m Lo debart Monohull Sailboats 2 17-06-2013 19:41
Turning Key 'Off' While Engine is Running sandycohen Engines and Propulsion Systems 9 11-05-2011 13:07
Perkins Prima no start Chief Engineer Engines and Propulsion Systems 16 29-05-2008 21:24
My Perkins Prima engine only goes at 2000rpm Dave-Fethiye Engines and Propulsion Systems 16 24-03-2008 11:44
Perkins Prima Lift pump Poorly Designed Chief Engineer Engines and Propulsion Systems 9 11-01-2008 13:25



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 19:53.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.