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Cox 140 Beaver

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Post  Coxfledgling Tue Jul 27, 2021 10:19 am

O +R, Olson and Rice...?

Many years ago you could get a very small outboard motor, with an air cooled "Rice" 2 t petrol engine that had a round cylinder head and revved like billyoh, tiny prop so not much good on a good tide.

They never caught on.

Don't remember seeing any " Cox" branding on it but memory fades etc. with age.
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Post  getback Wed Jul 28, 2021 8:55 am

I hope that works out for you Black Widow and yes post it and maybe we can get Amid to put the info in the instructions sheets .. July-27
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Cox 140 Beaver - Page 2 Empty Carburetor diaphragm

Post  BlackWidow Tue Aug 03, 2021 11:23 am

After searching literally hundreds of online diaphragm photos, I finally found one that closely matches the original.
It is Husqvarna part number 501220901 "metering diaphragm"

While not an EXACT match, with some simple mods, I think it is going to work!  See pix -


Cox 140 Beaver - Page 2 Diaphr10
Cox 140 Beaver - Page 2 Diaphr11
Cox 140 Beaver - Page 2 Img_3410

FINISHED CARBURETOR
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Post  getback Tue Aug 03, 2021 12:07 pm

Good deal Black Widow , Are you going to run it ? You should change the title to Cox 140 Beaver Carb. Gasket replacement or something like so it can bee found easily and others want have go through the adventure you did Very Happy This Site Rocks!
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Post  Admin Tue Aug 03, 2021 12:56 pm

That's some great work there! I know many of these Cox gas engines become shelf queens because carb parts are so difficult to find. If it works (which I cannot see why it wouldn't), I'd say this deserves a sticky.

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Post  getback Tue Aug 03, 2021 1:54 pm

Glad you popped in Jacob , what I was thinking myself and with the right title to tie things together would bee easy to find in the search feature ...>< A lot of GOOD info gets lost deep in threads where one subject leads to a discussion of a different topic >> If that makes since << July-27 Very Happy
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Post  cstatman Tue Aug 03, 2021 4:23 pm

thiis guy is selliing the chainsaw on ebay
https://www.ebay.com/itm/294293343914?hash=item4485400eaa:g:TZAAAOSwewlg7txW

and claims to have gt diaphram from Chainsawr

might be worth contacting them
https://store.chainsawr.com/
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Post  davidll1984 Tue Aug 03, 2021 8:17 pm

A litle trick for the rock hard diaphragm i Dip the complete carburetor in a mixture of gas and wd40 Let it soak for the night If the carburetor is new never seen gas We can reinstall it here the mix has filled the interior that the diaphragm has become flexible again It is old diaphragm are made of a material which with the gas and other product can regain their flexibility If they are not shattering or piercing tearing it should be good I have done a repair on an old chainsaw from 1977 mcculloch Yesterday the diaphragm did not move After having disassembled soak all night this morning I have a working carburetor Works like new it looks like this old saw was unused It's worth it a try Small Cox Logo Thumbs Up
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Cox 140 Beaver - Page 2 Empty AI own the Nib Cox Chainsaw.

Post  timeparticles Sun Aug 08, 2021 8:42 pm

The saw is listed on ebay now. Its the one pictured in the box it is NOS. https://www.ebay.com/itm/294293343914?hash=item4485400eaa:g:TZAAAOSwewlg7txW
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Post  BlackWidow Sat Aug 28, 2021 9:46 am

Cox 140 fans...
You CAN obtain STOCK CARB rebuild parts from:  SUGAR CREEK SUPPLY   Clapping
Here is the link:  https://www.sugarcreeksupply.net/search?type=product&q=cox

Now that my Cox 140 (Rhino 140) is pristine perfect and never run, I am reluctant TO RUN IT!What?

I also understand that for some odd reason, the engine prefers a prop in the 20x5 size, which is not only impossible to find, but to my way of thinking, WAY TOO MUCH PROP for a 23cc engine, ESPECIALLY a GLOW 23cc.

Does anyone have experience running or flying this engine?  Does the stock carburetor provide good idle and transition?

I would expect a "maintenance issue" would be to empty the carburetor, remove the stock diaphragm, and saturate it in some form of inert oil, otherwise the methanol will have it rock hard in no time No!
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Cox 140 Beaver - Page 2 Empty Take a peek the Roper engine makes more power

Post  timeparticles Sat Aug 28, 2021 10:22 am

As you can see I have plenty of these engines don't have them on planes the only plan I have is a new in the box P-51 Mustang if anybody would like itCox 140 Beaver - Page 2 16301610
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Post  timeparticles Sat Aug 28, 2021 10:27 am

Use boat gas here's a picture of the MustangCox 140 Beaver - Page 2 20210812Cox 140 Beaver - Page 2 20210812Cox 140 Beaver - Page 2 20210812Cox 140 Beaver - Page 2 20210812Cox 140 Beaver - Page 2 20210812Cox 140 Beaver - Page 2 20210812Cox 140 Beaver - Page 2 20210812
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