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Bart November 18th 06 07:06 PM

Winch Question for you...
 
How do you make a Lewmar 40 perform like a
Lewmar 48?



Capt. JG November 18th 06 08:02 PM

Winch Question for you...
 
Bigger handle?

--
"j" ganz @@
www.sailnow.com

"Bart" .@. wrote in message ...
How do you make a Lewmar 40 perform like a
Lewmar 48?




Bart November 18th 06 09:06 PM

Winch Question for you...
 
How much bigger?

"Capt. JG" wrote
Bigger handle?

"Bart" .@. wrote in message ...
How do you make a Lewmar 40 perform like a
Lewmar 48?




katy November 18th 06 10:17 PM

Winch Question for you...
 
Bart wrote:
How do you make a Lewmar 40 perform like a
Lewmar 48?


rebuild it....

Capt. JG November 19th 06 01:12 AM

Winch Question for you...
 
Don't know... a few inches maybe. I'm not familar with them.

--
"j" ganz @@
www.sailnow.com

"Bart" .@. wrote in message ...
How much bigger?

"Capt. JG" wrote
Bigger handle?

"Bart" .@. wrote in message ...
How do you make a Lewmar 40 perform like a
Lewmar 48?






Bart November 19th 06 02:42 AM

Winch Question for you...
 
"Bart" .@. wrote
How do you make a Lewmar 40 perform like a
Lewmar 48?


"Capt. JG" wrote
Bigger handle?


"Bart" .@. wrote
How much bigger?

"Capt. JG" wrote
Don't know... a few inches maybe. I'm not familar with them.



48/40 = 1.2 So it needs to be 20 % bigger.

This is the benefit of the newer winches being sized
in the power ratio.

Power ratio is calculated as follows:

(Handle Length/Drum Diameter) x Gear Ratio=Power Ratio.

Typically these are calculated for a 10" winch handle.

For a power ratio 48:
This means a pound of handle input, generates 48 lbs of power.
An adult is capable of handling loads of 35 lb typically, so the
winch can pull 1680 lb of sheet and halyards .

Going from 8 to 10" give you 25% more power.
10" to 12" give you exactly 20% more. Although
I've never seen a 12 in winch handle, I'd like to have
one though.

You don't get something for nothing. A longer handle is
slower than a shorter handle. So the idea is to size the
winch to the load.











Capt. JG November 19th 06 02:47 AM

Winch Question for you...
 
I guess I was wrong... I should have said a couple of inches. I said a few.
:-)

--
"j" ganz @@
www.sailnow.com

"Bart" .@. wrote in message ...
"Bart" .@. wrote
How do you make a Lewmar 40 perform like a
Lewmar 48?


"Capt. JG" wrote
Bigger handle?


"Bart" .@. wrote
How much bigger?

"Capt. JG" wrote
Don't know... a few inches maybe. I'm not familar with them.



48/40 = 1.2 So it needs to be 20 % bigger.

This is the benefit of the newer winches being sized
in the power ratio.

Power ratio is calculated as follows:

(Handle Length/Drum Diameter) x Gear Ratio=Power Ratio.

Typically these are calculated for a 10" winch handle.

For a power ratio 48:
This means a pound of handle input, generates 48 lbs of power.
An adult is capable of handling loads of 35 lb typically, so the
winch can pull 1680 lb of sheet and halyards .

Going from 8 to 10" give you 25% more power.
10" to 12" give you exactly 20% more. Although
I've never seen a 12 in winch handle, I'd like to have
one though.

You don't get something for nothing. A longer handle is
slower than a shorter handle. So the idea is to size the
winch to the load.













Walt November 19th 06 04:55 AM

Winch Question for you...
 
Bart wrote:

How do you make a Lewmar 40 perform like a
Lewmar 48?


Add 8.

// Walt


DSK November 19th 06 01:18 PM

Winch Question for you...
 
Bart wrote:
How do you make a Lewmar 40 perform like a
Lewmar 48?



Walt wrote:
Add 8.


You make it sound so easy.

DSK


Scotty November 19th 06 01:44 PM

Winch Question for you...
 

"Bart" .@. wrote in message
...


You don't get something for nothing. A longer handle is
slower than a shorter handle. So the idea is to size the
winch to the load.



If you went from a 40 to a 48, wouldn't that be slower (with
the same handle).?

Scotty




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