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Partner 65 / Vintage chain brake mechanisms

Started by flagoworld, September 14, 2020, 01:12:13 AM

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flagoworld

I have a Partner 65 without a chainbrake. I am making one from scratch for it as it runs great and I want to save it.

I have come up with a couple potentially working mechanisms, but I would really like to try to replicate how it was from the factory.

Does anyone have any vintage chainbrakes of similar style that can share pics of the mechanism?

Here are a couple pix from google of the assembly, but i can't find what is inside. These are not pix of my saw. Mine has no chainbrake.



sablatnic

What is the problem with the brake in the photos?

flagoworld

Those photos are from google images. My saw does not currently have a chainbrake at all.

sawguy21

I would look for an assembly or a later donor saw. You don't say where you are, Partner is not well known here in North America.
old age and treachery will always overcome youth and enthusiasm

flagoworld

Quote from: sawguy21 on September 14, 2020, 11:01:12 AM
I would look for an assembly or a later donor saw. You don't say where you are, Partner is not well known here in North America.
I am in WA.
I have been looking for a couple months now to no avail. I am also not willing to pay $100 for one if one does ever become available again.
I think pics of any old style chainbrake mechanism with the dual pivot/sliding poll mechanism assembled would help me. I can fab whatever. The new mechanisms are not helpful as they are the rotating over-center type and do not fit in this small space.

flagoworld

Oh also this assembly seems to be identical to the Maccullough P100 and Pro Mac 1000, as well as the Partner P100, Partner 1633b, Partner S55, and possibly some Poulan models of the era.

sablatnic

You can use the brakes from all of the "small cube"saws, but not from the large cubes.
Come to think, if you are to make a new brake, you could worse than using some Stihl components. They are cheap and easy to get hold of.

flagoworld

Quote from: sablatnic on September 14, 2020, 06:19:48 PM
You can use the brakes from all of the "small cube"saws, but not from the large cubes.
Come to think, if you are to make a new brake, you could worse than using some Stihl components. They are cheap and easy to get hold of.
Thanks,
What's a "small cube" saw? Excuse the lack of knowledge. Trying to figure out what to look up.

sablatnic

Small cube are the cube shaped Partner saws between 55 and 70 cc, and that includes Skil 1633. I can't remember, if that includes some Poulans.
They made a larger series too, large cube, between 80 and 100cc. The brakes from those won't fit.

Al_Smith

I've got a pretty good collection of Partner part lists but I'm not certain if I have one for that model .The picture you showed would be typical of the P-100 style of which I have two saws .One has a brake one not .
IMO you would be better off with an OEM unit than try to cobble one together .You might try chainsawr on the net as a source . That said I will attempt to find a parts list if I have one . 

Al_Smith

Mercy me are they proud of them .Scott at ChainsawR doesn't have one but if he did it would be 75 bucks .Evidently if the site is correct that cover was used on the s-65,s-55 and p-70 . I have an idea it's a rare item .Like Sawguy said Partner was not a popular chainsaw .Why so I have no idea .

realzed

Out of curiosity - is this one for sale a model that would contain parts that the OP is looking for:  

Ebay and Ebay type ads not permitted, refer to http://forestryforum.com/board/index.php?action=rules

$75 CDN - isn't that like $15 USD before shipping?  :-)

realzed

Would I still be breaking the rules in trying to help out and mention that my original link might be referencing a Facebook Marketplace ad that I have no affiliation to, posted in or near Sudbury Ontario Canada - under 'chainsaws for sale'..?
If so I give up..!


flagoworld

Thanks for the replies. If someone does happen to have something very similar and they would be willing to share pix of the mechanism removed from the case, that would be super helpful to me! I am more interested in the mechanism designed to fit into this small space than I am an exact match part, if that makes sense.... An approximation will allow me to recreate something very close to factory.

Whatever I create will be CAD drawn, 3d printed to test, then created out of steel. So i wouldn't exactly call it "cobbling" 🤪 But very close to it I suppose!

Al_Smith

 :D This thing has grown legs .All I have is the parts list for an F-55-65-70 .Nothing for S-65 .
However from the picture already posted that assembly resembles the P-100 which I do have .So I might assume that said the mechanics are the same design only the S-65 would be smaller in length,width etc .
Some place I do have a bar cover for a smaller Partner saw side cover with no brake .The question is does it have the proper mounting to accept a brake assembly or is it stand alone ? I have no idea where that cover even came from .Might have been me clicking on the wrong item on flea bay ,it happens .
Later on today I'll snap a pic of both a brake assembly for a P-100 super plus that bare cover if I can find it .That's about the best I can do because I'm no Partner expert .I'd get a pic now except it's as dark as the inside of a boot at nearly 4 AM here in the corn field . 

Al_Smith

Now having said that about a Partner saw but going of at a slant .I did make a side cover for a gear drive McCulloch 650 circa mid 1960's which is rare .
I however made it out of aluminum and it was long before chain brakes were even thought of .I've been looking for the correct cover for over 15 years and have only ever seen one on flea-bay but being a tight wad was not going to pony up the money .A pic of that saw is on Mike Acre's site and the cover doesn't look that bad all things considered . 

Al_Smith

What you can do is a Google on Partner S 65 parts list and it will come up .I tried on chainsawr and found but it copied in PDF so  have no idea how to convert it so I could post it .I can throw the parts from three chainsaws in a pile and figure them out but I'm a moron about computers .I want to adjust them with a big hammer at times .Old dog new trick kind of thing . :)

Al_Smith

I've got a picture of both the brake from a SP 1000 McCulloch plus I think a cover than might be for that S-65 .It's an over center trip mechanism .I didn't break it down because I've been down that road before and  spent a half a day trying to get it back together .At any rate it's the same design .

 

Al_Smith

Now then about these Partners .First of all they were not that popular but they do have a real good power range in their size classes . I rebuild and fully restored two of the size shown above with the exception of a paint job.One will be prettied up the one in the picture will not be .I'm not certain how long I've had that one but when I got serious about it it took two years of research and finding what parts I needed .That's the way it goes on restoration some times .
Chances are if it were a Stihl or Husqarna it wouldn't have taken so long .As I always say though if it were easy anybody could do it . 8) 

flagoworld

Oh man... First, thank you for all the time spent writing up these replies. Second, that chainbrake in your pic looks very similar to the pics I posted in the initial post. Is there any way you can get pics of what the mechanism looks like inside? Is it too tight to take some closeups through the cracks? I know it is over center, but I want to know vaguely what those components look like. Thanks! 🙂

Al_Smith

Let me check. I won't put a link just a suggestion where to look .If not I'll peal it apart but that won't be for a week 
 .

Al_Smith

If you do a Google search under Partner S-65 brake assembly and go to images some will show up .It links to one web forum I'll never access again but also to others . I've got a short road trip and when I get back if you haven't figured it out I'll take it apart and snap a picture .
While I'm at it it took me about 4 years to find a brake assembly for a Stihl 042 then about 2 hours to figure it out and I disassembled it from the bones of a donor too .These things are a pain in my posterior .  :D

flagoworld

I have done these google searches and found what I presume to be similar assemblies, but the issue is that the only things that come up are parts that uses to be for sale on ChainsawR, and every image has a very different set of parts. There is no hint as to where the parts go and looking at them in the pics I can't see how they would fit into the 2 pins in the brake housing. The smaller pin has only a couple mm of clearance to the back of the housing and none of the shown parts are that small... I really want to see what they look like in place.

Not to sound short with anyone, but i have spent hours on google and am at the point where I am looking for very specific things... That is, exactly what I have asked for, which is a picture of the assembly in place or removed and mocked up as if it were in place. I don't want to waste your time by having you replying with things I have already looked into 🙂 Apologies if that was not clear from the get go.

Al_Smith

So saying that you have a bare side cover minus the actual brake  assembly mechanism ?

flagoworld


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