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Post  rsv1cox Sun Sep 08, 2024 12:53 pm

Perhaps a few eyebrows raised but it is.  Lot's of moving parts, complex, and produced for a constructive purpose.  Cox's Series 140 engine adapted to power a chainsaw, a bicycle or what-ever.  Leroys star reed provides power to the bar oil pump.  Magneto, points, condencer, clutch, "pistol grip", lot's to love.  

My fifth one, sold cheaply as a parts chainsaw arrived yesterday.  Pull rope starter works fine, great compression and almost clean.  Fueled it up, primed through the carburator, pulled the rope and nothing..............not even a pop.  Pulled the plug and no sparkie.....Suspecting points.  The plug looks like it has been cleaned but the chainsaw shows no evidence of ever being apart.  I think the PO just cleaned the plug and went no further.

I'm looking forward to disassembly.  A fun thing to look into.  

Latest model I think with a plastic instead of a cast aluminum chain cover.  First one I have seen.  

The Beaver chainsaw, Cox's most interesting product P1018155
The Beaver chainsaw, Cox's most interesting product P1018156
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Post  Admin Sun Sep 08, 2024 8:20 pm

A bit of sanding of the points will hopefully bring it back to life.

I'd like to find one of those chainsaws someday. Would love to stumble across one in person.

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Post  rsv1cox Thu Sep 12, 2024 5:28 pm

The second one arrived today. If I thought the first was well boxed, well this fellow went overboard. The Mona Lisa should be shipped as well. Double wrapped with instructions.

The Beaver chainsaw, Cox's most interesting product P1018213


Always exciting to see whats missing and what has been messed with. Some heat on the flywheel, a cloth buffer and a tap with a substantial hammer and drop the engine onto a soft place.

The Beaver chainsaw, Cox's most interesting product P1018216

Ah, points. That and a carburator we are most of the way home.

The Beaver chainsaw, Cox's most interesting product P1018215
The Beaver chainsaw, Cox's most interesting product P1018214

Most Cox engines are numbered, some are not. This one is. Motor mostly locked up, but I'm not forcing it. Complete disassembly next. I love this stuff.

The Beaver chainsaw, Cox's most interesting product P1018218
The Beaver chainsaw, Cox's most interesting product P1018217
The Beaver chainsaw, Cox's most interesting product P1018219

The Beaver chainsaw, Cox's most interesting product P1018220
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Post  049kid Thu Sep 12, 2024 7:14 pm

Hey guys,all this reminds me of my childhood in the late 60s. My dad built me and my brother a 16"solid tire bike.i don't think it was the chainsaw version,I think it had a tickler on bottom of carb for priming and a red rubber kill switch.very fun as a young kid,got burnt many times on that little bugger
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Post  rsv1cox Thu Sep 12, 2024 7:45 pm

049kid wrote:Hey guys,all this reminds me  of my childhood in the late 60s. My dad built me and my brother a 16"solid tire bike.i don't think it was the chainsaw version,I think it had a tickler on bottom of carb for priming and a red rubber kill switch.very fun as a young kid,got burnt many times on that little bugger

Yes, red kill switch. Check where the spark plug lead comes out from the saws body. Press to stop.
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Post  rsv1cox Sun Sep 15, 2024 5:59 pm

I got around to tearing down the most likey salvagable parts chainsaw.  Disappointing surprises.  One of the reeds is missing, might as well be both of them.  No workie without two.  Lone reed visable far left.  

The Beaver chainsaw, Cox's most interesting product P1018231

Second surprise is the way the handle attaches. (Above picture) - On this one it looks like it's attached only by a press fit on posts.  All the others are attached by nuts and bolts.

The Beaver chainsaw, Cox's most interesting product P1018232
The Beaver chainsaw, Cox's most interesting product P1018233

More disappointments.  The PO broke off the fuel tubing nipple on the carburator and tried a brass fitting fix.  I wish that novices would just leave things they know nothing about alone.  A little heat on the tubing and it would have just popped off with a screwdriver pry on the open end.  

PO ..........Well lets see.........I'll just pull it straight off.......Duh??? Well maybe a little side-to side motion..........PO "Oh, Oh"..... Upsets me because this is otherwise a workable and very rare carburator that some dolt ruined. Whoops...Bob is venting. Smile Smile

The Beaver chainsaw, Cox's most interesting product P1018234

and...........this PO just could not win.  He stripped the torx fitting on the chain drives clutch.  Again.  I bet that he used no heat when he tried to unscrew it.  Been there on others.  I have to drill some out and pry it off.  Thankfully I have replacements for those specialized screws.  

The Beaver chainsaw, Cox's most interesting product P1018236
The Beaver chainsaw, Cox's most interesting product P1018235

Chainsaws, around here not just another pretty face.

Yesterday.

The Beaver chainsaw, Cox's most interesting product P1018240
The Beaver chainsaw, Cox's most interesting product P1018237

Last Spring

The Beaver chainsaw, Cox's most interesting product P1018238
The Beaver chainsaw, Cox's most interesting product P1018239


They get worked to the tune of many replacement chains.  Sometimes we get them resharpened at $5 each.  But new Chinese chains which last much longer than those resharpened are available on-line @ two for $20 shipped.
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Post  GallopingGhostler Mon Sep 16, 2024 2:30 am

Bob wrote:More disappointments.  The PO broke off the fuel tubing nipple on the carburator and tried a brass fitting fix.  I wish that novices would just leave things they know nothing about alone.  A little heat on the tubing and it would have just popped off with a screwdriver pry on the open end. ...
Bob, I enjoy your comments, telling it like it is. Very Happy

A previous owner adds new meaning to why a plumber in town has a slogan on the back of his tool truck, "We fix your husband's plumbing repairs." Laughing

The value of experiential knowledge is gained through age and experience, plus a knack for working on things. Huh... Smoking Cool

I've got a K&B .35 Torpedo bought used with a hacked off piston skirt very poorly done to create SPI, but gap is extreme and very roughly done.

Ruined a good engine otherwise. tongue
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Post  rsv1cox Mon Sep 16, 2024 6:47 pm

GallopingGhostler wrote:
Bob wrote:More disappointments.  The PO broke off the fuel tubing nipple on the carburator and tried a brass fitting fix.  I wish that novices would just leave things they know nothing about alone.  A little heat on the tubing and it would have just popped off with a screwdriver pry on the open end. ...
Bob, I enjoy your comments, telling it like it is. Very Happy

A previous owner adds new meaning to why a plumber in town has a slogan on the back of his tool truck, "We fix your husband's plumbing repairs." Laughing

The value of experiential knowledge is gained through age and experience, plus a knack for working on things. Huh... Smoking Cool

I've got a K&B .35 Torpedo bought used with a hacked off piston skirt very poorly done to create SPI, but gap is extreme and very roughly done.

Ruined a good engine otherwise. tongue

I have it's McCoy look-a-like George. I bought it years ago for next to nothing as it was a castor locked mess. But it had a curious glow plug extension that caught my eye.

The Beaver chainsaw, Cox's most interesting product P1018241

Today I found another on ebay for way to much money with another curious extension. Not a customer.

The Beaver chainsaw, Cox's most interesting product Mccoy_19

I may be able to save that carburator. The PO's brass replacement tube is threaded and a SO square drive screws it in. I think a little Blue Lock-tite or JB Weld on the threads may fix it. PO just smeared some type of cement around it that just flipped off. A 20 minute soak in Berrymans cleaned it up and everything else seems Ok.

The Beaver chainsaw, Cox's most interesting product P1018242






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Post  GallopingGhostler Mon Sep 16, 2024 10:44 pm

Bob, if anyone can save that carburetor, I know you can. I've watched you refurbish electric motors, solenoids, valves, switch assemblies, and etc.

You manage to carve out a way where there's none.

And yes, some people want way too much money for their dysfunctional stuff. I just pass them up until I find something worthwhile to bid on or buy. Sometimes those buys are pleasant finds, just need a little cleaning and tweaking.
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Post  rsv1cox Tue Sep 17, 2024 7:57 am

Did you see this on ebay George..

The Beaver chainsaw, Cox's most interesting product Milled10
The Beaver chainsaw, Cox's most interesting product Milled11
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Post  GallopingGhostler Tue Sep 17, 2024 9:22 am

No, haven't seen that one, Bob. They really butched that one, remnants of an earlier Testors .35 Red Head. Don't know what possessed one to do that. Doh!
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Post  rsv1cox Fri Sep 20, 2024 5:22 pm

Something new with this Cox chainsaw, the chain drive is cogged unlike all my other Cox chaninsaws which are slotted.  

The Beaver chainsaw, Cox's most interesting product P1018252
The Beaver chainsaw, Cox's most interesting product P1018246
The Beaver chainsaw, Cox's most interesting product P1018248
The Beaver chainsaw, Cox's most interesting product P1018249
The Beaver chainsaw, Cox's most interesting product P1018247
The Beaver chainsaw, Cox's most interesting product P1018250

I finally got the stuck clutch off.  It took a lot of drilling of the stripped hex drive screws head.  I finally had to grind down the conical end of my three legged gear puller to the diameter of the screw to get it off.  The clutch is toast but I have a replacement.  After I got it off I could unscrew the bitter end of the screw by hand.  Somehow it's the tapered part of the machine screw that gets stuck, not the threads.  

The Beaver chainsaw, Cox's most interesting product P1018251

Not many chainsaw fans here.  I share as sometime in the future some person may stumble on one and look to the CEF for guidance.
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Post  getback Sat Sep 21, 2024 8:46 am

Some of my old Stihl .015 chainsaws clutches are like that probably a universal / will fit replacement , I like the sprocket ones better easier to replace less parts to break. Very Happy
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Post  rsv1cox Sat Sep 21, 2024 1:08 pm

getback wrote:Some of my old Stihl .015 chainsaws clutches are like that probably a universal / will fit replacement , I like the sprocket ones better easier to replace less parts to break. Very Happy

The cogged drive is probably milled out of solid stock steel, much more expensive to manufacture that the pressed/stamped steel of the other drive.  That, and it's bushed with a brass pin replacing the Woodruff.  Curious as the shaft is milled for the Woodruff not the round brass pin which is staked in place.  If it wasn't for the clutch which is cogged I would think a customer mode or a one-off.  

By far a hair puller.  Wow.  Heat, hammer, gear puller, an Amazon supplied index of fresh high speed metal cutters, vices, drill press, even a crow bar and nothing was going to remove the clutch.  I even but Mark on it, a guy that can solve most anything.  It took heat and the modified gear puller to remove it.  Crack, crack as it let loose.  

Berrymans, and hot water, dish detergent and it's kitchen sink clean now.  

The Beaver chainsaw, Cox's most interesting product P1018262

But the engine, proving to be as troublesome as the clutch.  Locked up solid and I'm not forcing anything.  Usually, I have no trouble with these.

The Beaver chainsaw, Cox's most interesting product P1018264

Kroil, what I consider to be the best penetrating oil ever.  Heat gun heat and let it sit for a day or two.


The Beaver chainsaw, Cox's most interesting product P1018263

The Beaver chainsaw, Cox's most interesting product P1018268


Cox  - Made in USA

The Beaver chainsaw, Cox's most interesting product P1018267
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Post  rsv1cox Sun Sep 22, 2024 3:58 pm

Ok, this thing is putting me to the test!  Kroil, heat and the piston still wouldn't move.  I left it until this morning.  Cold, I tapped on the piston with a block of wood and got movement, a little more and I got the piston out.  Why?  Dissimilar metals?  With heat the piston, probably aluminum expanded more than the steel liner?  

Gross in there.

The Beaver chainsaw, Cox's most interesting product P1018289

The Beaver chainsaw, Cox's most interesting product P1018287
The Beaver chainsaw, Cox's most interesting product P1018286
The Beaver chainsaw, Cox's most interesting product P1018285
The Beaver chainsaw, Cox's most interesting product P1018288
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Post  Ken Cook Sun Sep 22, 2024 6:33 pm

My dad had a O&R Orline chainsaw. I believe it was referred to as the Model 13. That may have been the bar length. It was small and I never realized that it uses the same O&R engine I have which is the Tiny Tiger. I remember one thing specifically, I remember it would gush out bar oil all over. It probably was something very simple to fix. I just recall the times when my dad would use it. It would virtually run all day long only stopping for a refuel. You couldn't kill that saw.
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Post  rsv1cox Sun Sep 22, 2024 7:20 pm

You couldn't kill that saw.

I hope the same holds true for this Cox engined model Ken.  But, despite having seven I've yet to run one.  I don't see the need outside of curisoity as I have others.  But I will gas/oil one up someday and run it.

This engine perhaps the worst of the bunch.  Water in the gas, neglect or both it's rusty in there.  My brake hone cleaned up the cylinders bore and the sandblaster did the rest.

The Beaver chainsaw, Cox's most interesting product P1018292
The Beaver chainsaw, Cox's most interesting product P1018291
The Beaver chainsaw, Cox's most interesting product P1018290
The Beaver chainsaw, Cox's most interesting product P1018293
The Beaver chainsaw, Cox's most interesting product P1018294

Piston rings are stuck, routine for these.  A carefully applied pick loosens them and penetrating oil and a pick gets them out.  Simple Green or MMO in the groove and a toothbrush cleans them.  Carefully slide them over the piston back in place.  Getting both back in the cylinder...slots positioned 180 out takes fingernais and patience.  

The Beaver chainsaw, Cox's most interesting product P1018295
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Post  getback Mon Sep 23, 2024 6:54 am

she looks pretty rough all that rust never good , How are the roller bearings always bad about wear and flat siding.
Looks alot better after the cleaning though. Very Happy
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Post  rsv1cox Mon Sep 23, 2024 5:11 pm

getback wrote:she looks pretty rough all that rust never good , How are the roller bearings always bad about wear and flat siding.
Looks alot better after the cleaning though. Very Happy  

The bearings are fine but drove me nutz cleaning them up.  A Berrymans soak, a round brush, hot water rinse didn't clean the impacted goo out of them.  More Berrymans, hot water the same.  Simple green, hot water and I started to see some improvement.  A final soak in alcohol more round brush, MMOil and more brush.  A final hot soapy water clean up and rinse got them moving.  More MMOil, replaced the shafts on the bearings and hand spun them CC and CCW.  Smooth rotation now.  

Internally this thing was a mess.  Clean now but painful.

The Beaver chainsaw, Cox's most interesting product P1018296

My right hand is worse.  Smile Results from cleaning up all those screws and machine screws on the wire wheel.  Sad

The Beaver chainsaw, Cox's most interesting product P1018297
The Beaver chainsaw, Cox's most interesting product P1018299
The Beaver chainsaw, Cox's most interesting product P1018298

BTW - My shop clock/weather station gave up.  I took it apart to find the # of the Quatz Young Town replacement. $5.65 on ebay which I ordered.  But in the housing I found a fellow traveller, a scorpion from our Florida days. At the time we unpacked I found a couple of them in our TV sets.  We had a pool and a fish pond there, and they love water.  Not unusual to find one in bed with you but we never got stung.  CB knows.

The Beaver chainsaw, Cox's most interesting product P1018300
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Post  roddie Mon Sep 23, 2024 6:03 pm

The Beaver chainsaw, Cox's most interesting product P1018210

I'd shake your hand anytime.. and hope to someday...
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Post  rsv1cox Mon Sep 23, 2024 6:09 pm

roddie wrote:The Beaver chainsaw, Cox's most interesting product P1018210

I'd shake your hand anytime.. and hope to someday...

Thanks roddie. For a guy that doesn't like to get his hands dirty I do so on a daily basis. Smile....But I clean up well.

The Beaver chainsaw, Cox's most interesting product P1018301
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Post  Admin Mon Sep 23, 2024 6:48 pm

rsv1cox wrote:Something new with this Cox chainsaw, the chain drive is cogged unlike all my other Cox chaninsaws which are slotted.  

The Beaver chainsaw, Cox's most interesting product P1018252

Poking through the parts manual for the Beaver, they show a cogged sprocket.

The Beaver chainsaw, Cox's most interesting product Parts_10

I was searching the various parts numbers to see if there is any trace of these parts out there online.

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Post  rsv1cox Mon Sep 23, 2024 7:17 pm

Thanks for that Jacob.  It verifies that it was factory not some customer mod.  The piece #4 is one unit, the spot welds have come apart.  I'm not sure how to fix that.

Bob

PS............You gotta find one.  I need some company in my Cox chainsaw miseries.  Smile
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Post  roddie Mon Sep 23, 2024 7:26 pm

I've never owned a chain-saw.. Shocked ... but if were to find a RTR or ARTR Cox "Beaver".. that would obviously be the one I'd want. Smile I need to find a little wood-stove first.. Laughing
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Post  rsv1cox Tue Sep 24, 2024 9:19 am

Another nasty, rainy, drizzle day here in WV with a temperture of 59 degrees.  So its an inside day for me giving me the chance to work on the chainsaw.  

Tedious, sinking those two compression rings back into the cylinder.  One at a time.  Remove the top ring so you can see the bottom one then hope.  Fingernails work but a pick rotated around the perimeter while holding one end in works best.  Got it.  Push the cylinder down a bit and rotate the removed top ring back on and seat, then repeat using the pick.

Both rings were stuck when I removed the piston.  A little heat, MMO and a careful pick at the open end freed them.  Simple Green cleaned them up.

The Beaver chainsaw, Cox's most interesting product P1018304

The Beaver chainsaw, Cox's most interesting product P1018305

The crank pin has to be aligned with the slot in the PTO's shaft, a little like balancing an egg on one end.  

The Beaver chainsaw, Cox's most interesting product P1018306

Worst part of the cylinder, but the hone cleaned it up really well.............and - we have compression, pretty good too.

The Beaver chainsaw, Cox's most interesting product P1018307

New lock washers, sure why not....

The Beaver chainsaw, Cox's most interesting product P1018308
The Beaver chainsaw, Cox's most interesting product P1018309

Big guy, little guy.

The Beaver chainsaw, Cox's most interesting product P1018310

Difficult part done, now to assemble all those newly cleaned parts.  Robert has a replacement reed on the way.  Easy install then bolt on the pistol gripped carburator assembly.
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The Beaver chainsaw, Cox's most interesting product Empty Re: The Beaver chainsaw, Cox's most interesting product

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