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Cox Engine of The Month
What is this engine?
Page 1 of 1
What is this engine?
Hi everyone, I have this .049, but I have no idea what model it is, does anybody have an idea of what model it is?
https://paste.pics/fcd92d1bcc058ea907d92a4e3083de0b

https://paste.pics/fcd92d1bcc058ea907d92a4e3083de0b

Last edited by Admin on Mon Sep 09, 2019 3:18 am; edited 1 time in total (Reason for editing : fixed picture)
Not a cox guru- Beginner Poster
- Posts : 7
Join date : 2019-09-09
Re: What is this engine?
BTW I haven't figured out how to post pics properly so just right click on the link and then press "open image in new tab"
Not a cox guru- Beginner Poster
- Posts : 7
Join date : 2019-09-09
Re: What is this engine?
Looks like a Ranger to me, which is basically a die cast SureStart with an intake throttle.
Not sure about the black crankcase though.
Not sure about the black crankcase though.
dirk gently- Gold Member
- Posts : 416
Join date : 2012-02-03
Age : 38
Location : Poznań
Re: What is this engine?
Yeah that is what I thought, maybe its a black bomber and the previous owner put an RC carb on it like this one:https://coxengines.ca/throttle-conversion-for-cox-049-engine-tanked.html
Not a cox guru- Beginner Poster
- Posts : 7
Join date : 2019-09-09
Levent Suberk- Diamond Member
- Posts : 1200
Join date : 2017-12-24
Location : Turkey
Re: What is this engine?
Is the black bomber powerful?
Not a cox guru- Beginner Poster
- Posts : 7
Join date : 2019-09-09
Re: What is this engine?
Who would know? It may not be "officially" called anything. There are so many different parts that have been available in recent years, it hasn't been difficult to build your own unique engine.
It's possible that a Ranger was customised with a black crankcase or a Black Bomber was customised with a throttle. The documentation shown isn't specific for this engine.
Rod.
(On another note, I struggle a little with this type of engine being known as a "Ranger". A Ranger was an actual original Cox product, as pictured.)

It's possible that a Ranger was customised with a black crankcase or a Black Bomber was customised with a throttle. The documentation shown isn't specific for this engine.
Rod.
(On another note, I struggle a little with this type of engine being known as a "Ranger". A Ranger was an actual original Cox product, as pictured.)

Oldenginerod- Top Poster
- Posts : 3318
Join date : 2012-06-15
Age : 58
Location : Drouin, Victoria
Re: What is this engine?
If it was a customized engine, can anybody guess approx power output, or is that to hard? It has a rather large prop on it for an .049 so I am assuming the old owner was pretty confident in the crankshaft. I don't have the guts to take it apart, so would it be safe to run it with such a large prop?
Not a cox guru- Beginner Poster
- Posts : 7
Join date : 2019-09-09
Re: What is this engine?
It looks like a die cast crankcase with a sure-start cylinder and backplate....
Max prop would be around 6x3.
Max prop would be around 6x3.
Surfer_kris- Diamond Member
- Posts : 1769
Join date : 2010-11-20
Location : Sweden
Re: What is this engine?
Bernie still sale a $54 Throttled Die cast "Ranger"....raw crankcase but same as shown by OP
https://coxengines.ca/cox-.049-rc-ranger-engine.html
Matt or Bernie or both used to have die cast crank cases in several colors...now all I see is pink die cast from CoxInternational
If I was a betting man....the engine shown was bought off ebay from Bernie a few years back when they had a large variety of configurations
without knowing the cylinder porting we have to assume average reed valve .049 performance....prop shown does not appear over large to me
here are the two best sources for Cox engines and parts
http://www.exmodelengines.com/home.php
https://coxengines.ca/
https://coxengines.ca/cox-.049-rc-ranger-engine.html
Matt or Bernie or both used to have die cast crank cases in several colors...now all I see is pink die cast from CoxInternational
If I was a betting man....the engine shown was bought off ebay from Bernie a few years back when they had a large variety of configurations
without knowing the cylinder porting we have to assume average reed valve .049 performance....prop shown does not appear over large to me
here are the two best sources for Cox engines and parts
http://www.exmodelengines.com/home.php
https://coxengines.ca/
fredvon4- Top Poster
Posts : 3435
Join date : 2011-08-26
Age : 65
Location : Lampasas Texas
Re: What is this engine?
Ok, thanks for all the help!
Not a cox guru- Beginner Poster
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Join date : 2019-09-09
not a guru
none of us are ....some more than others
you are in right forum
intro....scroll down the topics
let us know YOU
you are in right forum
intro....scroll down the topics
let us know YOU
fredvon4- Top Poster
Posts : 3435
Join date : 2011-08-26
Age : 65
Location : Lampasas Texas
Re: What is this engine?
I'm guessing about 50-60W or around 0.075hp on a 6x3 prop.@Not a cox guru wrote:If it was a customized engine, can anybody guess approx power output
You don't have to take the entire engine apart just to change the prop, or did I misunderstand you?
I don't have the guts to take it apart, so would it be safe to run it with such a large prop?
dirk gently- Gold Member
- Posts : 416
Join date : 2012-02-03
Age : 38
Location : Poznań
Re: What is this engine?
No you did not misunderstand me, 50-60w that's more than I thought! I am going to build a Slipso plane for this one

Not a cox guru- Beginner Poster
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Join date : 2019-09-09
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