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Cox Engine of The Month
Cox Nitro Cat
Page 1 of 1
Cox Nitro Cat
Hi Everyone,
I am new to this forum and just picked up my first Cox product since I was 10 years old or so! Really pumped to assemble and get it running.
Anyone know anything about the engine on a Cox Nitro Cat? I had this boat as a kid and remember it being a bit under powered. It also could be that I was far less mechanically inclined in those years so the engine many have not been running to its full potential.
That being said I still may try an engine swap on this if it needs more power. I have done a bit of research on the different .049 engines to see which ones make the most power. Tee Dee seems to be the best from what I have gathered. Also a lot of people seem to like the black widow.
Any insight is much appreciated!
Here is a link to a similar product for anyone not familiar with the Nitro Cat as I have not figured out how to upload pics on here yet.
https://rodneysrc.wordpress.com/2013/04/19/cox-nitro-cat-rc-boatwatercraft/
Thanks!
I am new to this forum and just picked up my first Cox product since I was 10 years old or so! Really pumped to assemble and get it running.
Anyone know anything about the engine on a Cox Nitro Cat? I had this boat as a kid and remember it being a bit under powered. It also could be that I was far less mechanically inclined in those years so the engine many have not been running to its full potential.
That being said I still may try an engine swap on this if it needs more power. I have done a bit of research on the different .049 engines to see which ones make the most power. Tee Dee seems to be the best from what I have gathered. Also a lot of people seem to like the black widow.
Any insight is much appreciated!
Here is a link to a similar product for anyone not familiar with the Nitro Cat as I have not figured out how to upload pics on here yet.
https://rodneysrc.wordpress.com/2013/04/19/cox-nitro-cat-rc-boatwatercraft/
Thanks!
Re: Cox Nitro Cat
Well Hey Cobra! WELCOME TO THE FORUM!
Thanks for the link to the Nitro Cat! That’s a Cox model I haven’t seen before, but looks like a fun one to run ! I have a larger version called the Dumas Swamp Buggy.
Thanks for the link to the Nitro Cat! That’s a Cox model I haven’t seen before, but looks like a fun one to run ! I have a larger version called the Dumas Swamp Buggy.

Marleysky- Top Poster
Posts : 3617
Join date : 2014-09-28
Age : 70
Location : Grand Rapids, MI
Re: Cox Nitro Cat
Cox Venom 049 is the Most powerful black widow is very good engine To texaco wil run larger prop up To 7x3
davidll1984- Diamond Member
- Posts : 2099
Join date : 2020-02-12
Age : 38
Location : shawinigan
Re: Cox Nitro Cat
Marleysky wrote:Well Hey Cobra! WELCOME TO THE FORUM!
Thanks for the link to the Nitro Cat! That’s a Cox model I haven’t seen before, but looks like a fun one to run ! I have a larger version called the Dumas Swamp Buggy.
Yeah it is a blast! Now waiting to fire it up until i get the glowplugboy 24% fuel I just ordered.
Re: Cox Nitro Cat
davidll1984 wrote: Cox Venom 049 is the Most powerful black widow is very good engine To texaco wil run larger prop up To 7x3
Thanks for the reply! I'll look on ebay for a Cox Venom. Is Texaco the engine that I have with the kit? Sorry probably a newbie question. These little .049's seem to have quite the learning curve to catch up on!
Re: Cox Nitro Cat
Cobra. Your engine is not a common one. It basically looks like a Babe Bee only with an 8cc tank. Only one like that I know of was in the Cox Spitfire and called a Silver Bee. I think maybe there was a car engine with the unvented silver 8cc tank as well.
Texaco had a black case in most cases and a non-stunt tank like yours only red. Later Black Widows were all silver but had the vented stunt tank, as did the Golden Bee.
If you go looking for a Venom on-line you may get a bit of a shock.
Texaco had a black case in most cases and a non-stunt tank like yours only red. Later Black Widows were all silver but had the vented stunt tank, as did the Golden Bee.
If you go looking for a Venom on-line you may get a bit of a shock.

Oldenginerod- Top Poster
- Posts : 3831
Join date : 2012-06-15
Age : 60
Location : Drouin, Victoria
Re: Cox Nitro Cat
Oldenginerod wrote:
If you go looking for a Venom on-line you may get a bit of a shock.
That is, the genuine Venom. I doubt you'll find an original. Current ones for sale new are cosmetic reproductions.
Oldenginerod- Top Poster
- Posts : 3831
Join date : 2012-06-15
Age : 60
Location : Drouin, Victoria
Re: Cox Nitro Cat
Welcome to the forum!
I've never seen this model. Way cool!
The Texaco engine mentioned earlier can swing the bigger prop, but only because it has been de-tuned for endurance at slow rpms. It was built to turn slower and longer for really floaty free flight models.
I suggest you stick with the original engine on your model, and build a similar reproduction for trying different engines. Once you know which engines do what, then you will have a good handle on how to modify your new model once...if at all.
I've never seen this model. Way cool!
The Texaco engine mentioned earlier can swing the bigger prop, but only because it has been de-tuned for endurance at slow rpms. It was built to turn slower and longer for really floaty free flight models.
I suggest you stick with the original engine on your model, and build a similar reproduction for trying different engines. Once you know which engines do what, then you will have a good handle on how to modify your new model once...if at all.
944_Jim- Diamond Member
Posts : 1791
Join date : 2017-02-08
Age : 58
Location : NE MS
Re: Cox Nitro Cat
Welcome to the forum Cobra!
NEW222- Top Poster
- Posts : 3827
Join date : 2011-08-13
Age : 44
Location : oakbank, mb
Welcome to the FORUM
cobra51585 wrote:davidll1984 wrote: Cox Venom 049 is the Most powerful black widow is very good engine To texaco wil run larger prop up To 7x3
Thanks for the reply! I'll look on ebay for a Cox Venom. Is Texaco the engine that I have with the kit? Sorry probably a newbie question. These little .049's seem to have quite the learning curve to catch up on!
cobra51585: welcome to the FORUM. We are a group from all over the word and from about 14 to 83 years old or so.
The Texaco engine also usually has a taller glow head with more fins. I guess for better heat sinking. The larger tank, as already mentioned for more run time.
As you may know you don’t necessarily need an attached tank. The engine can be run from a tank in the front of the boat, or swamp buggy as that item is called.
If you enter “swamp buggy” into the “search” box on the left side of the page above LATEST TOPICS you can find other posts that talk about other similar swamp buggy’s.
Here are the countries the FORUM represents:















Happydad.




happydad- Rest In Peace
- Posts : 1592
Join date : 2012-05-28
Age : 77
Location : Escondido, CA
Re: Cox Nitro Cat
Welcome to the Forum Cobra!! First off before you go spending a bunch of money , run what you got to see how it performs and then you can look into more power by tuning and reproping
Nice Swamp Buggy !!

getback- Top Poster
Posts : 9554
Join date : 2013-01-18
Age : 65
Location : julian , NC
Re: Cox Nitro Cat
https://www.coxengineforum.com/h31-cox-history
https://www.mh-aerotools.de/airfoils/cox_frameset.htm
Check out both these sites...bring a beverage of your choice, bookmark....both are very good resource for moat thing Cox engines and various other toys
https://www.mh-aerotools.de/airfoils/cox_frameset.htm
Check out both these sites...bring a beverage of your choice, bookmark....both are very good resource for moat thing Cox engines and various other toys
fredvon4- Top Poster
Posts : 3988
Join date : 2011-08-26
Age : 67
Location : Lampasas Texas
Re: Cox Nitro Cat
This was literally my very first glow model and cox model. I loved it. I was about 9 or 10 when I got it. I was actually quite intimidated by how fast mine was. I always ran mine on morning dew wet grass at the park. if I ever come across another one I'm definitely going to try and get it. Maybe you can get a little more speed out of it by getting the lightest possible radio and battery gear. I seem to remember it having pretty chunky gear inside.
FSTP- Bronze Member
- Posts : 33
Join date : 2021-01-21
Age : 38
Location : Fresno,CA
Re: Cox Nitro Cat
Y remember them it was To expensive To me at that time and y was more crazy wit plane y buy one control Line y do have in pieces look how old it is buy in 1997 it was lots of fun it was Not m'y first cl plane y wish To Find one new one day wit its silencer y cant Find m'y at the time was To hard To instal y was Young wit no expérience in mécanique it change fast 



davidll1984- Diamond Member
- Posts : 2099
Join date : 2020-02-12
Age : 38
Location : shawinigan
Re: Cox Nitro Cat
i saw this model a while back in a cox catalog... thought it was pretty cool.
now im making my own- a dumas lil swamp buggy
putting my .074 on it
now im making my own- a dumas lil swamp buggy

putting my .074 on it

Lukemiester- Gold Member
- Posts : 290
Join date : 2020-10-08
Age : 18
Location : currently Wickenburg, AZ
Re: Cox Nitro Cat
Lukemiester wrote:i saw this model a while back in a cox catalog... thought it was pretty cool.
now im making my own- a dumas lil swamp buggy![]()
putting my .074 on it
I made the Hydro bat a few years ago. It was great fun building that.
https://www.coxengineforum.com/t10621-hydro-bat-by-vic-smeed-engine-probs
OVERLORD- Diamond Member
- Posts : 1686
Join date : 2013-03-19
Age : 56
Location : Normandy, France
Re: Cox Nitro Cat
OVERLORD wrote:Lukemiester wrote:i saw this model a while back in a cox catalog... thought it was pretty cool.
now im making my own- a dumas lil swamp buggy![]()
putting my .074 on it
I made the Hydro bat a few years ago. It was great fun building that.
https://www.coxengineforum.com/t10621-hydro-bat-by-vic-smeed-engine-probs
cool boat! ill be done with mine soon!
Lukemiester- Gold Member
- Posts : 290
Join date : 2020-10-08
Age : 18
Location : currently Wickenburg, AZ

» does nitro go bad
» NITRO !!!!!!!!! THEY"RE HERE !!!!!!!!!!!!!!
» Pee Wee rc won't start
» Nitromethane
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» NITRO !!!!!!!!! THEY"RE HERE !!!!!!!!!!!!!!
» Pee Wee rc won't start
» Nitromethane
» Buying used Cox engines
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