Empathy List Archives

trawlers@lists.trawlering.com

TRAWLERS & TRAWLERING LIST

Re: T&T: Free Wheeling a Twin Disc

Phil Little

Sun, Feb 7, 2010 5:10 AM

--- On Sat, 2/6/10, Wayne Prichard wayne@cruisermarine.com wrote:

From: Wayne Prichard wayne@cruisermarine.com
Subject: RE: T&T: Free Wheeling a Twin Disc
To: "'Phil Little'" plittle2005@yahoo.com
Date: Saturday, February 6, 2010, 3:43 AM

Hi Phil,
B
Thanks for the answer.B I need some way to do it quickly and then free it up
again. Ibve often wondered what action would be necessary if I had to be
towed in a substantial distance.B Also, Ibm one of those guys with the big
dual engines and I considered free wheeling while we did the Loop in 2008 but
did not know how to stop the spin on one side and then repeat the process on
the other side.
B
Wayne
B

Wayne Prichard
CruiserMarine.com
1422 Coachman Lane
Knoxville, TN B 37919
B
(865) 680-2080
wayne@cruisermarine.com
www.cruisermarine.comB
Boat Supplies for the Frugal Cruiser!
B
B

From: Phil Little [mailto:plittle2005@yahoo.com]
Sent: Friday, February 05, 2010 9:41 PM
To: trawlers-and-trawlering@lists.samurai.com ; Wayne Prichard
Subject: Re: T&T: Free Wheeling a Twin Disc
B

Aye, there's the rub (To quote Cap'n Shakespeare)!!

The method the offshore service boat guys used was to remove a coupling bolt
at the gear output flange, and attach a chain. Killer to do with a sea
running, holding station, and the wave action spinning the shaft!

(If you replaced one bolt with a longer one, to which the chain link and a nut
could be added to the additional length projection when needed, B this would
make the job quicker and safer)

PITAB to do but necessary if they had to run hard to make a schedule and the
shaft would be spinning up to 500 rpm.

This is why we (TD) developed the external plug-n lube/cooling pump.

This whole tying off is probably moot if the vessel speed is slow, but who
knows the upper limits for sure? I just saw aB number of boats in the Gulf
with fried gears. (There was even a sign in the pilothouse of one crewboat
warning personnel never to allow the gears to backdrive with an engine down
because the gear was likely to fail!)

Phil Little

--- On Fri, 2/5/10, Wayne Prichard < wayne@cruisermarine.com > wrote:

From: Wayne Prichard < wayne@cruisermarine.com >
Subject: T&T: Free Wheeling a Twin Disc
To: trawlers-and-trawlering@lists.samurai.com
Date: Friday, February 5, 2010, 6:47 AM

Snip: I personally would not back drive a TD gear without tying off the
shaft.

Phil,
What method would you recommend for tying off the shaft?
Thanks,

Wayne
1984 Californian 43
MV Segue

http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering

To unsubscribe or modify your subscription options (get password, change email
address, etc) go to:
http://lists.samurai.com/mailman/options/trawlers-and-trawlering

Trawlers & Trawlering and T&T are trademarks of Water World
Productions. Unauthorized use is prohibited.
B

Wayne, B One way to do this would be to replace one or two bolts in the gear output coupling flange with longer ones. The threaded portion sticking out beyond the nut would be available to take the end link of a short chain secured to the stringer alongside. B Shut down the engine. pop the chain onto the bolt, thread on and tighten a nut, and it will keep the shaft stationary. Probably double-nut it, as well. 5/16" chain would be plenty strong enough. B Then you could do it anytime it was necessary. B Crude, but I think it would work. --- On Sat, 2/6/10, Wayne Prichard <wayne@cruisermarine.com> wrote: From: Wayne Prichard <wayne@cruisermarine.com> Subject: RE: T&T: Free Wheeling a Twin Disc To: "'Phil Little'" <plittle2005@yahoo.com> Date: Saturday, February 6, 2010, 3:43 AM Hi Phil, B Thanks for the answer.B I need some way to do it quickly and then free it up again. Ibve often wondered what action would be necessary if I had to be towed in a substantial distance.B Also, Ibm one of those guys with the big dual engines and I considered free wheeling while we did the Loop in 2008 but did not know how to stop the spin on one side and then repeat the process on the other side. B Wayne B Wayne Prichard CruiserMarine.com 1422 Coachman Lane Knoxville, TN B 37919 B (865) 680-2080 wayne@cruisermarine.com www.cruisermarine.comB Boat Supplies for the Frugal Cruiser! B B From: Phil Little [mailto:plittle2005@yahoo.com] Sent: Friday, February 05, 2010 9:41 PM To: trawlers-and-trawlering@lists.samurai.com ; Wayne Prichard Subject: Re: T&T: Free Wheeling a Twin Disc B Aye, there's the rub (To quote Cap'n Shakespeare)!! B The method the offshore service boat guys used was to remove a coupling bolt at the gear output flange, and attach a chain. Killer to do with a sea running, holding station, and the wave action spinning the shaft! B (If you replaced one bolt with a longer one, to which the chain link and a nut could be added to the additional length projection when needed, B this would make the job quicker and safer) B PITAB to do but necessary if they had to run hard to make a schedule and the shaft would be spinning up to 500 rpm. B This is why we (TD) developed the external plug-n lube/cooling pump. B This whole tying off is probably moot if the vessel speed is slow, but who knows the upper limits for sure? I just saw aB number of boats in the Gulf with fried gears. (There was even a sign in the pilothouse of one crewboat warning personnel never to allow the gears to backdrive with an engine down because the gear was likely to fail!) B Phil Little --- On Fri, 2/5/10, Wayne Prichard < wayne@cruisermarine.com > wrote: From: Wayne Prichard < wayne@cruisermarine.com > Subject: T&T: Free Wheeling a Twin Disc To: trawlers-and-trawlering@lists.samurai.com Date: Friday, February 5, 2010, 6:47 AM Snip: I personally would not back drive a TD gear without tying off the shaft. Phil, What method would you recommend for tying off the shaft? Thanks, Wayne 1984 Californian 43 MV Segue _______________________________________________ http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering To unsubscribe or modify your subscription options (get password, change email address, etc) go to: http://lists.samurai.com/mailman/options/trawlers-and-trawlering Trawlers & Trawlering and T&T are trademarks of Water World Productions. Unauthorized use is prohibited. B

Wayne Prichard

Sun, Feb 7, 2010 12:39 PM

Snip: replace one or two bolts in the gear output coupling flange with
longer ones.

Phil,

Actually I don't think it is crude at all and I think it would be quick to
change over. Crude is in the eye of the beholder. You should see some of
the other things I have done.

Wayne

MV Segue

1984 Californian 43

Wayne Prichard

CruiserMarine.com

1422 Coachman Lane

Knoxville, TN 37919

(865) 680-2080

wayne@cruisermarine.com

www.cruisermarine.com http://www.cruisermarine.com/

Boat Supplies for the Frugal Cruiser!

From: Phil Little [mailto:plittle2005@yahoo.com]
Sent: Sunday, February 07, 2010 12:11 AM
To: Wayne Prichard
Cc: 'Trawlers-and-Trawlering'
Subject: RE: T&T: Free Wheeling a Twin Disc

Wayne,

One way to do this would be to replace one or two bolts in the gear output
coupling flange with longer ones. The threaded portion sticking out beyond
the nut would be available to take the end link of a short chain secured to
the stringer alongside.

Shut down the engine. pop the chain onto the bolt, thread on and tighten a
nut, and it will keep the shaft stationary. Probably double-nut it, as well.
5/16" chain would be plenty strong enough.

Then you could do it anytime it was necessary.

Crude, but I think it would work.

--- On Sat, 2/6/10, Wayne Prichard wayne@cruisermarine.com wrote:

From: Wayne Prichard wayne@cruisermarine.com
Subject: RE: T&T: Free Wheeling a Twin Disc
To: "'Phil Little'" plittle2005@yahoo.com
Date: Saturday, February 6, 2010, 3:43 AM

Hi Phil,

Thanks for the answer. I need some way to do it quickly and then free it up
again. I've often wondered what action would be necessary if I had to be
towed in a substantial distance. Also, I'm one of those guys with the big
dual engines and I considered free wheeling while we did the Loop in 2008
but did not know how to stop the spin on one side and then repeat the
process on the other side.

Wayne

Wayne Prichard

CruiserMarine.com

1422 Coachman Lane

Knoxville, TN 37919

(865) 680-2080

http://us.mc830.mail.yahoo.com/mc/compose?to=wayne@cruisermarine.com
wayne@cruisermarine.com

http://www.cruisermarine.com/ www.cruisermarine.com

Boat Supplies for the Frugal Cruiser!

From: Phil Little [mailto:plittle2005@yahoo.com]
Sent: Friday, February 05, 2010 9:41 PM
To: trawlers-and-trawlering@lists.samurai.com ; Wayne Prichard
Subject: Re: T&T: Free Wheeling a Twin Disc

Aye, there's the rub (To quote Cap'n Shakespeare)!!

(If you replaced one bolt with a longer one, to which the chain link and a
nut could be added to the additional length projection when needed, this
would make the job quicker and safer)

PITA to do but necessary if they had to run hard to make a schedule and the
shaft would be spinning up to 500 rpm.

This is why we (TD) developed the external plug-n lube/cooling pump.

This whole tying off is probably moot if the vessel speed is slow, but who
knows the upper limits for sure? I just saw a number of boats in the Gulf
with fried gears. (There was even a sign in the pilothouse of one crewboat
warning personnel never to allow the gears to backdrive with an engine down
because the gear was likely to fail!)

Phil Little

--- On Fri, 2/5/10, Wayne Prichard < wayne@cruisermarine.com > wrote:

From: Wayne Prichard < wayne@cruisermarine.com >
Subject: T&T: Free Wheeling a Twin Disc
To: trawlers-and-trawlering@lists.samurai.com
Date: Friday, February 5, 2010, 6:47 AM

Snip: I personally would not back drive a TD gear without tying off the
shaft.

Phil,
What method would you recommend for tying off the shaft?
Thanks,

Wayne
1984 Californian 43
MV Segue

http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering
http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering

To unsubscribe or modify your subscription options (get password, change
email address, etc) go to:
http://lists.samurai.com/mailman/options/trawlers-and-trawlering
http://lists.samurai.com/mailman/options/trawlers-and-trawlering

Trawlers & Trawlering and T&T are trademarks of Water World
Productions. Unauthorized use is prohibited.

Snip: replace one or two bolts in the gear output coupling flange with longer ones. Phil, Actually I don't think it is crude at all and I think it would be quick to change over. Crude is in the eye of the beholder. You should see some of the other things I have done. Wayne MV Segue 1984 Californian 43 Wayne Prichard CruiserMarine.com 1422 Coachman Lane Knoxville, TN 37919 (865) 680-2080 wayne@cruisermarine.com www.cruisermarine.com <http://www.cruisermarine.com/> Boat Supplies for the Frugal Cruiser! _____ From: Phil Little [mailto:plittle2005@yahoo.com] Sent: Sunday, February 07, 2010 12:11 AM To: Wayne Prichard Cc: 'Trawlers-and-Trawlering' Subject: RE: T&T: Free Wheeling a Twin Disc Wayne, One way to do this would be to replace one or two bolts in the gear output coupling flange with longer ones. The threaded portion sticking out beyond the nut would be available to take the end link of a short chain secured to the stringer alongside. Shut down the engine. pop the chain onto the bolt, thread on and tighten a nut, and it will keep the shaft stationary. Probably double-nut it, as well. 5/16" chain would be plenty strong enough. Then you could do it anytime it was necessary. Crude, but I think it would work. --- On Sat, 2/6/10, Wayne Prichard <wayne@cruisermarine.com> wrote: From: Wayne Prichard <wayne@cruisermarine.com> Subject: RE: T&T: Free Wheeling a Twin Disc To: "'Phil Little'" <plittle2005@yahoo.com> Date: Saturday, February 6, 2010, 3:43 AM Hi Phil, Thanks for the answer. I need some way to do it quickly and then free it up again. I've often wondered what action would be necessary if I had to be towed in a substantial distance. Also, I'm one of those guys with the big dual engines and I considered free wheeling while we did the Loop in 2008 but did not know how to stop the spin on one side and then repeat the process on the other side. Wayne Wayne Prichard CruiserMarine.com 1422 Coachman Lane Knoxville, TN 37919 (865) 680-2080 <http://us.mc830.mail.yahoo.com/mc/compose?to=wayne@cruisermarine.com> wayne@cruisermarine.com <http://www.cruisermarine.com/> www.cruisermarine.com Boat Supplies for the Frugal Cruiser! _____ From: Phil Little [mailto:plittle2005@yahoo.com] Sent: Friday, February 05, 2010 9:41 PM To: trawlers-and-trawlering@lists.samurai.com ; Wayne Prichard Subject: Re: T&T: Free Wheeling a Twin Disc Aye, there's the rub (To quote Cap'n Shakespeare)!! The method the offshore service boat guys used was to remove a coupling bolt at the gear output flange, and attach a chain. Killer to do with a sea running, holding station, and the wave action spinning the shaft! (If you replaced one bolt with a longer one, to which the chain link and a nut could be added to the additional length projection when needed, this would make the job quicker and safer) PITA to do but necessary if they had to run hard to make a schedule and the shaft would be spinning up to 500 rpm. This is why we (TD) developed the external plug-n lube/cooling pump. This whole tying off is probably moot if the vessel speed is slow, but who knows the upper limits for sure? I just saw a number of boats in the Gulf with fried gears. (There was even a sign in the pilothouse of one crewboat warning personnel never to allow the gears to backdrive with an engine down because the gear was likely to fail!) Phil Little --- On Fri, 2/5/10, Wayne Prichard < wayne@cruisermarine.com > wrote: From: Wayne Prichard < wayne@cruisermarine.com > Subject: T&T: Free Wheeling a Twin Disc To: trawlers-and-trawlering@lists.samurai.com Date: Friday, February 5, 2010, 6:47 AM Snip: I personally would not back drive a TD gear without tying off the shaft. Phil, What method would you recommend for tying off the shaft? Thanks, Wayne 1984 Californian 43 MV Segue _______________________________________________ <http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering> http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering To unsubscribe or modify your subscription options (get password, change email address, etc) go to: <http://lists.samurai.com/mailman/options/trawlers-and-trawlering> http://lists.samurai.com/mailman/options/trawlers-and-trawlering Trawlers & Trawlering and T&T are trademarks of Water World Productions. Unauthorized use is prohibited.