Previous in Forum: Pressure Rating for Flanges as per AWWA and ANSI   Next in Forum: Exhaust Temperature MTU 12V4000M71
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
13 comments
Rate Comments: Nested
Gerry D
Associate

Join Date: Nov 2012
Posts: 37

Lead Angle for a Scroll Winch

08/03/2013 7:32 AM

I am designing a system which includes a scroll winch to wrap up a 3 inch rope, and there is a maximum lead-in angle for a scroll with no mechanical spreading gear. I have a figure in my memory! can anyone confirm it for me? Gerry D
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
lyn
Guru

Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#1

Re: Lead Angle for a Scroll Winch

08/03/2013 9:13 AM

I think you're off by about 6°.
Register to Reply
Gerry D
Associate

Join Date: Nov 2012
Posts: 37
#2
In reply to #1

Re: Lead Angle for a Scroll Winch

08/03/2013 9:40 AM

Thanks Lyn. If you are right, it will make life a lot easier. But how did you know the figure in my memory? Gerry D.
Register to Reply
lyn
Guru

Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#3
In reply to #2

Re: Lead Angle for a Scroll Winch

08/03/2013 3:49 PM

I'm an NSA operative. I know everything about you.

Register to Reply
Gerry D
Associate

Join Date: Nov 2012
Posts: 37
#11
In reply to #3

Re: Lead Angle for a Scroll Winch

08/04/2013 7:49 PM

Hi Lyn, change your quest for intelligent life to a search for intelligence!
Register to Reply
TonyS
Guru
United Kingdom - Member - New Member

Join Date: Aug 2010
Location: Resting under the Major Oak
Posts: 4347
Good Answers: 181
#4

Re: Lead Angle for a Scroll Winch

08/03/2013 8:52 PM

"I have a figure in my memory! can anyone confirm it for me? Gerry D"

I have a figure in my mind, but without knowing the figure in you're mind I can't confirm anything.

__________________
 The reports of my death are greatly exaggerated.
Register to Reply
Gerry D
Associate

Join Date: Nov 2012
Posts: 37
#8
In reply to #4

Re: Lead Angle for a Scroll Winch

08/04/2013 7:22 PM

Yes Tony, you could confirm, or refute it. You're into semantics, I'm not. All you have to do is give me the figure if you know it, if it is the same as mine you have confirmed it, if it is different I will have to read up. Thank you for going to the trouble of replying though. Gerry D.
Register to Reply
Oraka
Power-User

Join Date: Feb 2011
Location: New Zealand
Posts: 128
Good Answers: 5
#5

Re: Lead Angle for a Scroll Winch

08/03/2013 10:38 PM

Ask a logger or a fisherman or, as a last resort !!!, ask your rope supplier. He is the logical one to ask as he has expert knowledge or, if not, he has access to it from the manufacturers.
Register to Reply
Gerry D
Associate

Join Date: Nov 2012
Posts: 37
#9
In reply to #5

Re: Lead Angle for a Scroll Winch

08/04/2013 7:33 PM

Sensible answer Oraka. I am a fisherman, but a lazy one, I'm afraid. I have already asked a logger friend and he says they don't use scrolls. I read it up years ago and may have to again, but the forum seemed an easier way. Thank you for taking the trouble to answer . Gerry D.
Register to Reply
Oraka
Power-User

Join Date: Feb 2011
Location: New Zealand
Posts: 128
Good Answers: 5
#12
In reply to #9

Re: Lead Angle for a Scroll Winch

08/04/2013 8:38 PM

Gerry, I am a fisherman too. But the fishermen I was meaning are the professional ones who haul trawls every day. And if they damage a wire cable by not feeding it onto the winch drum correctly it costs big $$. Likewise with loggers. If they are operating a skyline hauler, they must feed their cables correctly onto the hauler drums or they will soon go belly up.
Register to Reply
Gerry D
Associate

Join Date: Nov 2012
Posts: 37
#13
In reply to #12

Re: Lead Angle for a Scroll Winch

08/05/2013 7:59 AM

Orako, I am certified as "Skipper (Full)" ie, I can skipper any size of fishing boat, anywhere in the world. Went to sea with my dad as cabin-boy at 15 and retired at 75. Wrung a lot of seawater out of my socks! Thanks for your intelligent and astute suggestion. Good fishing Gerry.D.
Register to Reply
Anonymous Poster #1
#6

Re: Lead Angle for a Scroll Winch

08/04/2013 7:53 AM

Yes! That's the correct figure you have in your memory!
Register to Reply Score 1 for Off Topic
passingtongreen
Guru

Join Date: Aug 2009
Location: Glen Mills, PA.
Posts: 2385
Good Answers: 114
#7

Re: Lead Angle for a Scroll Winch

08/04/2013 8:45 AM

I googled, "scroll winch" and the only direct hit was this thread. Point the way to a picture please.

__________________
 In a time of universal deceit, telling the truth is a revolutionary act. George Orwell
Register to Reply
Gerry D
Associate

Join Date: Nov 2012
Posts: 37
#10
In reply to #7

Re: Lead Angle for a Scroll Winch

08/04/2013 7:45 PM

Thank you Passingtongreen, but I will do as Oraka advises and email the rope manufacturer. Thank you for the offer of help nevertheless. Gerry D.
Register to Reply
Register to Reply
Have a Different Question?
13 comments
Copy to Clipboard

Users who posted comments:

Anonymous Poster (1); Gerry D (6); lyn (2); Oraka (2); passingtongreen (1); TonyS (1)

Previous in Forum: Pressure Rating for Flanges as per AWWA and ANSI   Next in Forum: Exhaust Temperature MTU 12V4000M71

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Mechanical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (59 right now)
Show Members
Advertisement