Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Partner => Topic started by: wkend lumberjak on November 05, 2014, 10:00:58 pm

Title: Partner P85
Post by: wkend lumberjak on November 05, 2014, 10:00:58 pm
this is a question for a friend of mine he is working on a p85? and the measurements he is coning up with are 52mm bore and 37mm stroke that does not add up to 85 cc  looked at Acres.  It says 36 that doesn't =85 either.   Any input would be appreciated.  The math I'm using is pi x radius squared x stroke divided by1000. ??? ??? ???
Title: Re: Partner P85
Post by: awol on November 05, 2014, 10:31:37 pm
Hey Kenneth! I actually have two of these saws here, I wonder if they are maybe not even P85s? It still does not explain the Acres listing of 85cc with 52/36 bore/stroke.
Title: Re: Partner P85
Post by: aclarke on November 05, 2014, 10:41:00 pm
Displacement should be more like 76ccs
Title: Re: Partner P85
Post by: awol on November 05, 2014, 10:49:19 pm
Look what I found:
http://chainsawrepair.createaforum.com/partner/partner-55cc-65cc-70cc-85cc-100cc/
Guess I better check the stroke again.
Title: Re: Partner P85
Post by: awol on November 05, 2014, 10:51:14 pm
If it has a 40mm stroke, that would make it 84.905cc.
Title: Re: Partner P85
Post by: SawTroll on November 06, 2014, 04:48:36 pm
There are several bore/stroke mistakes in the Partner section of Acres site, as well as several misleading pictures. 

The correct stroke is 40mm. ;)
Title: Re: Partner P85
Post by: wkend lumberjak on November 07, 2014, 07:16:49 pm
Alan any luck.
Title: Re: Partner P85
Post by: awol on November 10, 2014, 09:29:07 pm
Well I chucked the crankshaft up in the lathe, and used the cross-slide readout to measure. It does have close to a 40mm stroke, as in 39.875 after transposing from English to metric measurements.
Title: Re: Partner P85
Post by: David Young on November 17, 2014, 02:04:12 pm
hmmmm,
sounds like the stroke is a little short.
don't worry ive been accused of that myself, nothing to worry about just the way it is......
Title: Re: Partner P85
Post by: awol on November 21, 2014, 07:09:11 pm
   The P85 runs again! Here is video of it after a basic porting job and squish adjustment.
https://www.youtube.com/watch?v=e3_kPjBetK0&feature=youtube_gdata_player
Title: Re: Partner P85
Post by: wkend lumberjak on November 21, 2014, 07:28:55 pm
Looking good. :) :) :) :)
Title: Re: Partner P85
Post by: awol on November 24, 2014, 01:26:38 pm
Finished the fourth draft on porting the P85 last night. I kinda like this old saw!
https://www.youtube.com/watch?v=H5X9-iiL-Xk&feature=youtube_gdata_player
Title: Re: Partner P85
Post by: SawTroll on November 26, 2014, 08:14:37 am
Nice saw - now it it time to start looking for a 99cc P100 top end!   ;D
Title: Re: Partner P85
Post by: awol on November 26, 2014, 12:13:00 pm
   Yes, 54mm here we come! I'd rather just find a whole P100 and keep this one as it is. Here is the latest video of the P85 in old Walnut, wearing a 9 pin and pulling some square chain.

https://www.youtube.com/watch?v=pDsjcYmrE8s&feature=youtube_gdata_player
Title: Re: Partner P85
Post by: sharkey on November 27, 2014, 07:17:39 am
Very Nice Partner Awol. 

Speaking of putting a different top end on something, did you guys see the Dolmar 9010 that SRCARR put a 395BB on?  I was impressed.

 http://sawhawgz.com/showthread.php/3919-Dolmar-9000-9010-Big-Bore-AKA-the-Dolkivarna?s=89808cf9ea589ad7387ddae220e31785
Title: Re: Partner P85
Post by: awol on November 27, 2014, 10:17:23 am
   Yessir, I did see that thread and was also impressed. There is a lot of that kind of stuff that can be done if you take the time to try it. This P85 is fitted with a 064 Stihl piston, because the skirt was .100 wider and allowed more widening of the intake and exhaust ports.
Title: Re: Partner P85
Post by: farmboy on November 29, 2014, 06:19:58 pm
Yep sure did all I can say is "WOW" awesome work.
Shep
Title: Re: Partner P85
Post by: 3000 FPS on December 04, 2014, 08:49:56 pm
The saw seems to really get with the program.   Nice work.
Title: Re: Partner P85
Post by: Eccentric on December 05, 2014, 01:55:27 pm
Great job salvaging that saw AWOL.
Title: Re: Partner P85
Post by: Cut4fun . on December 11, 2014, 12:14:34 pm
Nice work awol. 
Title: Re: Partner P85
Post by: awol on December 12, 2014, 10:12:13 am
    Thank you-all for the kind words! It sure is fun to take a basket case like this one and make it RUN.
Title: Re: Partner P85
Post by: Cut4fun . on December 12, 2014, 04:55:15 pm
    Thank you-all for the kind words! It sure is fun to take a basket case like this one and make it RUN.

What all have you built and ported for fun or work?
Title: Re: Partner P85
Post by: awol on December 12, 2014, 10:33:16 pm
   I haven't been doing this for very long, the p-85 is only about my fifth project. First was a John Deere 50v, then my Echo cs600, John Deere cs81, Echo cs590, and Jonsered 801. Sure is fun learning new things!