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Cox Engine of The Month
August-2024
balogh's
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"Cox TD09 R/C Beast of Burden featuring Kamtechnik head and DIY metallic fuel nipple"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
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balogh's
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"Cox TD09 R/C Beast of Burden featuring Kamtechnik head and DIY metallic fuel nipple"
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PAST WINNERS
ok cub co2 engine size
Page 1 of 2
Page 1 of 2 • 1, 2
ok cub co2 engine size
how can i tell the size of this engine?
![ok cub co2 engine size Sam_1917](https://i.servimg.com/u/f44/17/24/51/79/sam_1917.jpg)
![ok cub co2 engine size Sam_1918](https://i.servimg.com/u/f44/17/24/51/79/sam_1918.jpg)
thanks
![ok cub co2 engine size Sam_1917](https://i.servimg.com/u/f44/17/24/51/79/sam_1917.jpg)
![ok cub co2 engine size Sam_1918](https://i.servimg.com/u/f44/17/24/51/79/sam_1918.jpg)
thanks
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 29
Location : Geneva, mn, USA
Re: ok cub co2 engine size
Technically speaking, its a motor, not an engine. That should stir things up!
![lol!](https://2img.net/i/fa/i/smiles/lol.gif)
daviddiag- Silver Member
- Posts : 79
Join date : 2012-04-18
Age : 73
Location : Bradenton, Florida
Re: ok cub co2 engine size
good point, still there is a Piston, Crank case, Crankshaft, and Cylinder
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 29
Location : Geneva, mn, USA
Re: ok cub co2 engine size
Pi times radius square times stroke will give you displacement, as you know. Measuring bore would be simple enough. measuring the stroke would be difficult, as cylinder head does not appear to be removable. What a sweet little motor! Have you run it yet?
![Smile](https://2img.net/i/fa/i/smiles/icon_smile.gif)
daviddiag- Silver Member
- Posts : 79
Join date : 2012-04-18
Age : 73
Location : Bradenton, Florida
Re: ok cub co2 engine size
i need to find a 8g co2 cartridge for it, the cylinder head is not removable as the cylinder head is part of the cylinder as one whole piece
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 29
Location : Geneva, mn, USA
Re: ok cub co2 engine size
How about this?
http://www.ebay.com/itm/10-8g-CO2-soda-chargers-8-gram-C02-seltzer-cartridges-sparklets-carbonated-water-/160720096408?pt=LH_DefaultDomain_0&hash=item256baa0c98#ht_1218wt_1041
http://www.ebay.com/itm/10-8g-CO2-soda-chargers-8-gram-C02-seltzer-cartridges-sparklets-carbonated-water-/160720096408?pt=LH_DefaultDomain_0&hash=item256baa0c98#ht_1218wt_1041
Re: ok cub co2 engine size
those might just work, ill try to get my old man to order them later tonight
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 29
Location : Geneva, mn, USA
Re: ok cub co2 engine size
this might help, the piston even has a wrist pin
![ok cub co2 engine size Sam_1929](https://i.servimg.com/u/f44/17/24/51/79/sam_1929.jpg)
![ok cub co2 engine size Sam_1930](https://i.servimg.com/u/f44/17/24/51/79/sam_1930.jpg)
![ok cub co2 engine size Sam_1931](https://i.servimg.com/u/f44/17/24/51/79/sam_1931.jpg)
![ok cub co2 engine size Sam_1929](https://i.servimg.com/u/f44/17/24/51/79/sam_1929.jpg)
![ok cub co2 engine size Sam_1930](https://i.servimg.com/u/f44/17/24/51/79/sam_1930.jpg)
![ok cub co2 engine size Sam_1931](https://i.servimg.com/u/f44/17/24/51/79/sam_1931.jpg)
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 29
Location : Geneva, mn, USA
Re: ok cub co2 engine size
Mitch,
Did you just unscrew the cylinder by hand? I haven't tried to disassemble mine yet, but I would love to check out the inards.
Be careful when you run it as your reassembly might leave the cylinder in such a position that the ball check valve is almost always pressed out of its seated position. As stated, this might cause a frozen piston upon charging. Be sure to start high and screw it down only a quarter-turn at a time. I'm sure you already know this, though. It's just a thought...
KP
Did you just unscrew the cylinder by hand? I haven't tried to disassemble mine yet, but I would love to check out the inards.
Be careful when you run it as your reassembly might leave the cylinder in such a position that the ball check valve is almost always pressed out of its seated position. As stated, this might cause a frozen piston upon charging. Be sure to start high and screw it down only a quarter-turn at a time. I'm sure you already know this, though. It's just a thought...
![Embarassed](https://2img.net/i/fa/i/smiles/icon_redface.gif)
KP
kpriddle- Bronze Member
- Posts : 35
Join date : 2012-05-29
Location : Maine
Re: ok cub co2 engine size
Mark Boesen wrote:The OK CO2 'engine' was a .019, intro'd in '61, used .024 crank.
so its a .019?
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 29
Location : Geneva, mn, USA
Re: ok cub co2 engine size
i used a cox .09 wrench (the part that is used for the carb body)
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 29
Location : Geneva, mn, USA
Re: ok cub co2 engine size
awesome
i ordered the co-2 cartidges that Mfd posted the link to, so hopefully these will work. I definetly want to run this engine
can i use 3 in 1 oil?
![Smile](https://2img.net/i/fa/i/smiles/icon_smile.gif)
can i use 3 in 1 oil?
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 29
Location : Geneva, mn, USA
re: old man
mitchg95 wrote:those might just work, ill try to get my old man to order them later tonight
be nice to us old men. i have RC cars to. big ones. LOL hd
![Small Cox Logo](/users/3015/29/34/60/smiles/7356.png)
![Futaba Radio](/users/3015/29/34/60/smiles/354952.png)
happydad- Rest In Peace
- Posts : 1592
Join date : 2012-05-28
Age : 79
Location : Escondido, CA
Re: ok cub co2 engine size
lol, ya. Im glad he ordered the co-2 cartridges
![Very Happy](https://2img.net/i/fa/i/smiles/icon_biggrin.png)
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 29
Location : Geneva, mn, USA
Re: ok cub co2 engine size
3 in 1 is 20 weight. Way thicker than Singer or any other sewing machine oil.
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
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...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA
Re: ok cub co2 engine size
ok, ill look for Singer oil
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 29
Location : Geneva, mn, USA
Re: ok cub co2 engine size
Or any brand of sewing machine oil. MMO might be okay too.mitchg95 wrote:ok, ill look for Singer oil
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA
Re: ok cub co2 engine size
cool, ill look the next time im at the store
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 29
Location : Geneva, mn, USA
Re: ok cub co2 engine size
But it's still motor. Its motive force is created outside the machine.mitchg95 wrote:good point, still there is a Piston, Crank case, Crankshaft, and Cylinder
dinsdale- Account Deactivated by Owner
- Posts : 317
Join date : 2012-02-22
Re: ok cub co2 engine size
Mitch,
Remember that you can also use air tool oil or even light bicycle oil. If you are looking for the sewing machine oil, I found mine at Jo-Ann's Fabric and Craft store.
Good luck,
KP
Remember that you can also use air tool oil or even light bicycle oil. If you are looking for the sewing machine oil, I found mine at Jo-Ann's Fabric and Craft store.
Good luck,
KP
kpriddle- Bronze Member
- Posts : 35
Join date : 2012-05-29
Location : Maine
Re: ok cub co2 engine size
kpriddle wrote:Mitch,
Remember that you can also use air tool oil or even light bicycle oil. If you are looking for the sewing machine oil, I found mine at Jo-Ann's Fabric and Craft store.
Good luck,
KP
Harbor freight has some air tool oil at a very decent price. I use it along with sewing machine oil as after run for my Coxes. Sewing machine oil is supposed to very light and slippery opposed to other oils.
Re: ok cub co2 engine size
Couple of comments:
I think the OK CO2 motor was introduced in ~1951, perhaps the '61 is a typo.
The fins are for heating, otherwise the engine would freeze up (literally).
Mine, unfortunately, does not have the cartridge holder.
George
I think the OK CO2 motor was introduced in ~1951, perhaps the '61 is a typo.
The fins are for heating, otherwise the engine would freeze up (literally).
Mine, unfortunately, does not have the cartridge holder.
![ok cub co2 engine size Okco210](https://i.servimg.com/u/f40/17/00/06/17/okco210.jpg)
George
gcb- Platinum Member
- Posts : 908
Join date : 2011-08-11
Location : Port Ewen, NY
Re: ok cub co2 engine size
wow '51
this thing is sweeter every time i think about it
![Smile](https://2img.net/i/fa/i/smiles/icon_smile.gif)
mitchg95- Diamond Member
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Age : 29
Location : Geneva, mn, USA
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