Gibb 7STA Winch service

Georgio

Georgio

Well-Known Member
Joined
23 Jan 2003
Messages
1,797
Location
Solent/south coast
georgeisted.blogspot.com
I need to service a couple of these small snubbing winches, see pic...

http://www.whatsforless.com/ebay/winch/gibb_self_tailing_winch_7sta.jpg

To lift the drum off the stripper arm needs to me moved or removed (something that has not been done in a long time by the looks of it).

I'm concerned about breaking the plastic stripper arm.

Anyone got experience of servicing these winches, should I just twist the arm out of the way or is there another method?

I had never seen these particular winches before, I guess the are from the 70's or 80's.

Thanks
 
I serviced my Gibb ST28s and put up a description on here. You can probably find it if you search although it was in 2008! (or 2009)
The stripper arms were metal and unscrewed anti clockwise and I had to give them a tap with a rubber hammer to loosen them although you could probably devise some sort of lever. Be careful though if they're plastic because you won't be able to get any new ones if they break.
 
Last edited:
Hi Georgio,
I have a Gibb 7STA which I inherited with the arm broken and loose,and I gaze at this on my desk quite often.So I can show you what the shaft looks like.I haven't been able to figure out how it is held in.There is what could be a damaged 'key' on the bottom,it doesn't look as though it has snapped away from a lower portion which I can see down the mount tube,but which doesn't show a keyway.I don't know if it is held against the rope groove with a spring or how it works so if you can advise how it is actually used I would be grateful.It may help me to reposition it.If it is held static,i.e. not sprung then there is the chance of fixing it to the strong tube with a pin.
Hope that the pics give you some idea of the possibilities,and a warning ......https://picasaweb.google.com/bluerm166/GibbArm?authuser=0&authkey=Gv1sRgCP6yrsWzqrf6Bg&feat=directlink
 
I have one of these winches too. The plastic arm seems to be me retained by creases in the wall of the vertical tube. I assume they are not meant to be removable as the crease could well have been put in after the arm was inserted. Mine swivels okay but is not sprung and is quite worn, but works fine.

EDIT
Also the drum will come off without the arm being removed. It should just swivel out of the way.
 
Last edited:
I'd suggest you contact Cliff Mogridge, proprietor of Winch Servicing, Emsworth. He's very helpful with advice and could probably supply any parts you might need.

[h=2]http://www.winchservicing.com/p/about_us.html[/h]
 
Can one of you please explain how the line crosses from the main drum to end up in the jammer - how the arm acts in this ? A photo with the line in the tailed position would probably do this.
Thanks in advance.
 
I've done it again today but not so many images came up. Perhaps because I'm on my phone not laptop. However, there was one with a sheet on. Make sure you search with 'Gibb winch ST7a" under images including upper case seems to make a difference.
 
You are right.I've probably seen this before but thought that the line was merely draped for aesthetic effect.It implies that the arm is fixed.So possible to refix and to remake if necessary.
Thanks.

Err,on looking properly the design council image shows the arm in the opposite attitude to that in all the other shots.Can someone confirm that it is wrong -does the arm rotate to allow loops to be passed over the body ? http://www.vads.ac.uk/large.php?uid=52997
 
Last edited:
bluerm166 said:
You are right.I've probably seen this before but thought that the line was merely draped for aesthetic effect.It implies that the arm is fixed.So possible to refix and to remake if necessary.
Thanks.

Err,on looking properly the design council image shows the arm in the opposite attitude to that in all the other shots.Can someone confirm that it is wrong -does the arm rotate to allow loops to be passed over the body ? http://www.vads.ac.uk/large.php?uid=52997
Click to expand...

Any views on the edit ? Have they printed the photo back to front ? Is it my eyes ?
 
I have one of these winches for the genoa furling line.
The stripping arm is just as shown in the image quoted (VADS).
I serviced it a few years ago, stripped it down to component level, cleaned everything, and re-assembled. It worked miles better after that. The stainless tube on the shaft of the stripper has never rotated, though it looks like it should do.
I usually put two wraps on the drum before the third wrap over the stainless stripper arm holder. The image shows only one wrap. I find it slips like that.
 
Thanks Geoff.
Number of turns understood.I believe the winch turns clockwise,so the VADS photo makes sense,with the arm pointed against the rotation so as to separate the line.Whereas the typical photo as http://www.whatsforless.com/ebay/winch/gibb_self_tailing_winch_7sta.jpg shows the arm the other way.Can you remember what the travel is on your arm ? Does it click or settle into the stripping position with slight resistance in other parts of the arc.I'm beginning to think that the 'bowtie' shaped spigot on the integral arm shaft drops into a larger 'bowtie' shaped sinking in the separate fixed plastic component inside the lower tube - both worn away in my case.Maybe the lower component has a spring underneath it.
 
The stripping are will open about 90 degrees, quite enough to un-do the rope from the drum.
I serviced my main winches at the same time, and took pictures of them but not this one.

The inside of the slot on the tailing part of the drum of this smaller one shows which way the rope should go. It should be trying to pull the rope towards the centre of the drum to grip it.

I think the design is not a great one. With a lot of weight on the rope being hauled in, the friction around the stainless collar of the tailer upstand is excessive.
 
Georgio said:
Thanks for the info, sounds like it should twist out of the way the, I will give it a try.
Click to expand...
I know this is an old thread, but do you remember having any luck? I am in a similar situation and don’t want to try and force anything. Afraid I will break something.
 
You must log in or register to reply here.

Share this page

Top