trewhella winch

[woody paul]

I saw a monkey winch about 6 years ago in a barn it was 3 times the size of all the others I have seen for sale and on YouTube. 

He said it was a special order one with 20 ton rating bet it still sits there. 

[Brian COOK]

7 hours ago, Haironyourchest said:

Maybe if you took it to a machining shop they could fabricate the parts you need?

 

7 hours ago, Haironyourchest said:

Maybe if you took it to a machining shop they could fabricate the parts you need?

That is what I am hoping to do!  Pretty hard getting someone to fabricate the part when I have not the slightest idea what these parts look like.  The "thumb tab" has some form of engagement pawl on it, shape, length, angle of the thumb pawl?  On the opposite side of that same assembly resides some form of bolt that slides into two steel ring supports with an apparent taper at the end?  Is it a bolt, a spring loaded assembly, again without knowing what these parts look like, I doubt an engineering shop would be able to fabricate correctly.  So, my hope is a member has one of these and can let me know what these bits look like.

[Brian COOK]

7 hours ago, woody paul said:

I saw a monkey winch about 6 years ago in a barn it was 3 times the size of all the others I have seen for sale and on YouTube. 

He said it was a special order one with 20 ton rating bet it still sits there. 

Perhaps a "lead" for a current member...in the UK?  

[difflock]

4 minutes ago, Brian COOK said:

 

That is what I am hoping to do!  Pretty hard getting someone to fabricate the part when I have not the slightest idea what these parts look like.  The "thumb tab" has some form of engagement pawl on it, shape, length, angle of the thumb pawl?  On the opposite side of that same assembly resides some form of bolt that slides into two steel ring supports with an apparent taper at the end?  Is it a bolt, a spring loaded assembly, again without knowing what these parts look like, I doubt an engineering shop would be able to fabricate correctly.  So, my hope is a member has one of these and can let me know what these bits look like.

Being such a simple mechanism, I would have imagined that "reverse engineering" the needed parts should not be a big issue?

But obviously much easier with photos or drawings.

[Haironyourchest]

There was one for sale on eBay in Scotland last night.

[openspaceman]

1 hour ago, Brian COOK said:

 

That is what I am hoping to do!  Pretty hard getting someone to fabricate the part when I have not the slightest idea what these parts look like.  The "thumb tab" has some form of engagement pawl on it, shape, length, angle of the thumb pawl?  On the opposite side of that same assembly resides some form of bolt that slides into two steel ring supports with an apparent taper at the end?  Is it a bolt, a spring loaded assembly, again without knowing what these parts look like, I doubt an engineering shop would be able to fabricate correctly.  So, my hope is a member has one of these and can let me know what these bits look like.

If you can wait a week I'll dive into my old boss's workshop and take some photos.

[Brian COOK]

1 hour ago, openspaceman said:

If you can wait a week I'll dive into my old boss's workshop and take some photos.

Hi, Really appreciate the offer don't make a special trip for my sake.  If you could get some measurements and what lives off the end of the thumb tab would be great, thank you.  

[Brian COOK]

2 hours ago, Haironyourchest said:

There was one for sale on eBay in Scotland last night.

Had a look and it's still for sale, has the "bits" I need.  Be wishful thinking to find a "parts" Monkey Winch where the seller would be happy to sell the parts I need, save allot of grief.

[Brian COOK]

2 hours ago, difflock said:

Being such a simple mechanism, I would have imagined that "reverse engineering" the needed parts should not be a big issue?

But obviously much easier with photos or drawings.

The "bolt"? on the right side looks easy enough to remanufacture by the photo of the one for sale in Scotland, it's the thumb tab that concerns me as it locks/unlocks the winch drum and getting that part wrong could literally kill me if it let go under a few ton cable tension due to me getting it's design wrong.

[openspaceman]

On 22/10/2010 at 14:58, David Humphries said:

 

 

These perchance...........

 

 

 

.

 

14 hours ago, Brian COOK said:

Hi, Really appreciate the offer don't make a special trip for my sake.  If you could get some measurements and what lives off the end of the thumb tab would be great, thank you.  

Could you mark any parts on copies of pictures David posted? and which measurement .

 

I'm surprised no one took up the rights from the liquidators, not only did they do the winches but also the cable shorteners, which I have seen used on zip lines.