We all knew what was meant anyway! 😀

I told you you would make Ronald angry, hahahaha.

But I'm sorry that you were scared, I would have liked to know the final outcome.

I was left with doubts.
I will do this: I will use the term "motor" due to affinity with the term "motore".

Sorry Ronald but I was just kidding with Lew and the motor/engine thing began to get out of control. Len

Hear again you guys, and you know who you are, this topic was a simple discussion about using heat fins on an electric motor and if has gotten off the rails.

I heard what I wanted, now let’s go on to another topic please and thank you. Some of us must be diagnosed with “Cabin Fever” 🧐!

Hi Edw, thanks so much for the information but this changes everything.

It then seems that the terms are synonymous (fairly interchangeable with each other and not specific).

Could it be that there are differences between UK English, US English and Australian English?
I'm curious how the linguistic dispute will end.
I wait to archive the information learned from LewZ as knowledge.

Don't make Ronald too angry, because we are very off topic, hahahaha.

According to the Oxford Dictionary

“Motor - a machine, especially one powered by electricity or internal combustion, that supplies motive power for a vehicle or for another device with moving parts”

“Engine - Any device for converting some forms of energy into mechanical work”

🤔

Can I Take An Electric Bike On A Trail In Florida?

You can ride an electric bike on almost all trails throughout Florida😊. But it’s essential to do your research, and evaluate your personal needs, before making a bike purchase or planning an itinerary. You will want to ensure that the type of e-bike (E-1, E-2, E-3) you have or are considering, allows you to safely explore trails.

Lew
Florida 😎, USA

All of my boat brushless motors and ESC are water cooled by design. That feature is built in.

None of my brushed motors nor their ESC / BEC are water cooled. However, I run my boats at scale speeds ( slow ). I never had any overheating issues even in the summer.


however......


If you are running at high speed or racing for extended time, I definitely recommend cooling your brushed motors either with fins and forced air cooling, or a water coil/jacket.

I have a standby water pump on one boat that will force water thru the brushed motors and ESC if needed. So far, I used it rarely.

next , the motor and engine topic.

I think English is the only language that uses both engine and motor to describe the same thing ( although engine is used to describe a machine using fossil or organic or chemical based fuel ). Motor in English is fine to describe any mechanism that converts energy into mechanical form. Everyone else in a Latin based language ( and others ) uses the word motor only.


Isaac

I was quoting a generally accepted term. When I was growing up a gas powered engine was often called a motor. Rarely was an electric powered device called sn engine. See terms such as "motor bike" or "motor car". Seems like "motor" is the most used expression. So, is "engine" subservient to "motor"?

When I was a kid, no one knew what a search engine was. Like most new creations that came about these devices had to be given a name. Sometimes a brand new name, sometimes expanding on an existing name which might now be called a category.

As far as what powers a majority of model boats (that little thingy with wires connected to it) seems to be called a "motor".

Briticana: "Electric motor", any of a class of devices that convert electrical energy to mechanical energy, usually by employing electromagnetic phenomena.

Sorry, but I have to end my message here but I need to get back to soldering wires on my latest boat's motor ("engine"?).

Lew
Florida ⛱️, USA

Hi Lew,
Re "Motors run on electricity and engines run on combustion."
Does that mean that Florida has passed a new law?
"Henceforth all motorbikes shall be E-BIKES"???

Oh! And are all Search Engines powered by petrol, diesel, H, or steam (which is itself generated by burning something; oil, gas, wood, Uranium or similar) ... ?
Doug😎

Hey Lew, if something runs on an external power source like air or steam, are a steam engine or a steam motor???

I think I eliminated all the "engines" and put the "motors" in their place.

Thanks so much for the clarification LewZ.

In Italian there is no such differentiation between words.
We use the word "motore" for everyone and rely only on adjectives to distinguish and classify them.
For example: electric, single phase, three phase synchronous, three phase asynchronous, thermal, petrol, diesel etc. etc.
Or we understand it from the context in which we write, even without the use of adjectives.
So when I write a text I always use the word "motore" and Google Translate then does as it pleases.

Now I will re-edit the previous message in light of your information and, I hope, that the text is more understandable.

You must all excuse me, I know I make terrible translations. Tell me when I'm not understandable, I won't be offended.

Motors run on electricity and engines run on combustion. The engine converts various forms of fuels into mechanical force, while the motor transforms electrical energy into mechanical force. The vast majority of model boats therefore use motors.

Lew
Florida, USA

Hi Ron, good evening to all ship modelers.

I have never used cooling fins on my motors and I agree with those who say that you shouldn't need them if you use the motor within certain limits.
My motors have never gotten excessively hot but I always try to use oversized motors compared to the effort actually required.
In short, they work far below what they could do.

But this is just my experience, very limited and therefore not very significant.
I answer yes to your question in a general sense.
Heatsink fins are, in general, a very effective means of dispersing heat.
Consider that some electronic components, such as mosfets for example, can support a passage of electric current five times (or even more) higher than the nominal current if equipped with cooling fins. And this is indicated in the component's technical data sheets.
It's a physical question, the more you increase the surface area, the more heat exchange is promoted.

It's true, I also haven't seen many cooling fins on electric model motors, while I've almost always seen cooling fins on escs.
This is due, in my opinion, to the fact that the motor must not overheat. Therefore the fins would be a fallback but not a good initial solution.
Whoever creates his minimum battery-ESC-motor setup must ensure that the motor does not heat up too much, considering the powers involved.
There are extreme cases in which the best cooling system must be used.

The heat exchange is favored by the surface (therefore fins) but also by ventilation (therefore small fans).
If it is true that I have not seen many model motors with cooling fins, I can tell you that the 12 volt and higher motors I have have a small plastic fan incorporated (and not clearly visible) on the rear part integral and coaxial to the rotor.
They are very effective.
Water is certainly more efficient than air as a cooling fluid due to its different physical and chemical characteristics.
Nonetheless, even for fast hull motors I have not seen many water cooling systems (maybe only one and on this forum if I'm not mistaken). However, for nautical ESCs they are the norm.
On the online model shops that I know, in the ESC section for boats there are only ESCs with provision for water cooling, while in the ESC section for cars there are ESCs with air cooling (ventilation) or only cooling fins .
In fact, wanting an ESC without tubes and very cheap, I bought it in the automotive section.

It would be better if you were not forced to resort to fins or other cooling systems (in order of effectiveness: fins - air ventilation - open water circuit) but if you put them they certainly won't harm the motor.
The motor must be placed in a compartment where there is the possibility of exchanging (dispersing) heat.
If cooling fins are added, for example in aluminium, you must remember to ensure that these adhere well to the part to be cooled. Thermal conduction must be well guaranteed otherwise they are useless.

Len, that is the ProBoat design. It works very well. Lew

Lew very clever using a hollow rudder shaft. and thus eliminating the need for another hull penetration. Len

Actually I think most of the ESCs for scale model boats are air cooled. I rarely have seen any water cooled ones, and those are usually on high speed boats.

I was given a USCG 47 ft MLB that had a water cooled ESC in it, and that was promptly taken out and now has a pair of Hobbywing 1060's in it. Both motors still have the operational re-routed water cooling coils on them. The water comes in via the bottom of the hollow rudder shaft.

Better/modern ESCs run more efficiently tossed together with keeping the motor current on the safe side of the ESC.

Attached is a picture of what I typically build for my water feed-throughs in the hull that I explained in a previous post. I turn them out of brass bar stock but they can be made out of some tube and sheet material soldered together. The flange sits on the inside of the hull. Size depends on the cooling coil and feed tubes diameters

Lew
Florida, USA

In my dealings with dc motors, as long as you are operating the motor within its torque and voltage / current limits, the heat is tolerable. It’s when it is operating beyond these limits where there are problems.
However, most of the ESC out there are water cooled. So I guess that would be the answer.🤔

Heatsinks should work OK as long as cooling air is going over them. Obviously, most boats have the motor(s) confined in the hull with an enclosed deck and superstructure. So there needs to be some testing/checking done.

I generally don't use air cooling. If I have issues with overheating I use aluminum cooling coils made for these motors. Two holes in the hull with 45 degree cuts, one facing forward (input) and one facing aft (output) works for me.

The faster the boat moves the increasd water flow cools the increasing heat of the motor.

Lew
Florida, USA

I've used both fans and heat fins, it's important to rember to have a fresh air intake and exhaust to keep the air moving

I have had success with heat sinks and fans. I just don't want to drill the hull for water intake. The motor and esc have both heat sinks and fans on this model.
RR