Heatsinks - do you use them?

[whahooo]

Do you use Motor Heatsinks?

 

Do they help the Motor to stay alive?

Do they give a perfomanceboost trough the coolingeffect?

Do they help the ESC to stay alive (if mounted on the Motor)?

Are they generally recomended?

 

 

I think about getting a Set of Heatsinks from China to put on all of my Models, but not if they doesn`t have any Advantage...

I generelly use the Tamiya standard ESCs and Silvercans or Sport tuned Motors....
Only my Wild Dagger, Blazing Star, Top Force are using hotter Motors like a Super Stock or hotter.

[Nicadraus]

I use heat sink in one of my kits. Then I also installed a rocket fan (28,000rpm). The casing of the fan is also made of aluminum which also serves as extension of the heasink for more heat dissipation. 

[SuperChamp82]

A lot of the answer really depends on your set up, where you’re running and how hard your pushing 

Which boils down to battery, ESC, motor, FDR, tyres + track 

Others are much closer to the precise sums involved but if you’re pushing hard I’d have thought you’re more likely to thermal a decent ESC before cooking a motor ? 

So making sure it can handle the load + is also cooled would, for me, come before cooling the motor 

Beyond that, all cooling inevitably draws power away from the motor - but whether the offset helps in practice again depends on what you’re doing / for how long 👍

[whahooo]

Battery = NiMhs
Motor = mostly Silvercans or Sport Tuned Motors
ESC = mostly rere standard ESCs

 

I only use Bashers. The most Cars wich i`m using are reres from the 80s and 90s wich i will hop up with Ball Bearings, CVAs and a Sport Tuned  - Super stock Motor.

 

The only Chassis i have with a reall "hot" Motor is a TA-02T with a 15T Yokomo pro stock Motor, the ESC is rated up to "35 Ampere" and is the only ESC that likes to get really hot, so i think of replacing it with a modern ESC.

 

I´m not into Racing.
I like to bash my Cars without getting them hurt :D That means i like to "Sacalebash" them, if that makes sense. I like to drive over a bumpy ground and make Jumps up to 10 cm or so with my Wild one.

I only bash my cheap budget Racer harder (DT-02) like in a Skate Park or a BMX Traxk.

 

My Goal is to bash all of my cars without getting anything broken or have to maintain al lot. That Goal also has to be archieved with the Motors....

Does that makes any sense? Is a Heatsink a good Idea or unnessecary?


Thanks for the Answers and sorry for my really bad english, it is really hard for me to write in a other Language, :D

[howaboutme]

Based on the answers above I would say "no", not even close to needing it. But they do look pretty and no one here will judge you if you do it for that reason alone. 

[Problemchild]

Yes I do because they are £4

JJ

[Juggular]

Using a heatsink is generally a good idea.    

If the motor stays close to body temperature, like 40C (100F), no problem.  Below chart shows that a magnet would pick up 20 washers at that temp.  If the temp goes up to 75C (160F: as hot as the dashboard in the summer), the magnet picks up about only 10 washers.  The magnetic force drops down to half. 

Rare earth magnets like Brushless motor magnets, the damage could be permanent.  For ferrite magnets like the silver can, the damage is a bit less permanent, but damaging nonetheless.  If you are running the motor hot, it just gets slower and slower every time you expose it to the heat.  So, I have a heatsink for almost every car. (even though I tend to run low-geared & cool)  I also put in motor bearings where I can.  Not only do they reduce the amp drain by 30-40%, but also they create less heat than bushings.  

 

[Jonathon Gillham]

I don't use heatsinks as I haven't found that they make any real difference, unless they also have a fan mounted. The setup that @Nicadraus uses definitely works though. 

If you need cooling then use fans, and those Surpass Rocket fans are brilliant. The alloy case actually helps a lot, plastic ones flex and the fans break.

@SuperChamp82 you cook motors in stock racing as you are pushing them to their limits with high gearing, but the ESC will come off cool as they run in blinky mode. If a motor fan breaks mid race you cab ruin a motor in minutes. In mod its the opposite, the motor is relatively unstressed but the ESC can be at its limit so they need fans.

[Problemchild]

Well they do work 

increasing the surface area WILL increase cooling - that’s a scientific fact  maybe not much.

on my TT02b that’s running brushless and 3s I have also greater air flow by creating an intake (and outlet)

JJ
 

[whahooo]

I Hust ordered 5 pcs of Titanium colored Heatsinks.

At least they will look cool on my Clod :D

[TwistedxSlayer]

Yes because if they weren’t needed Tamiya wouldn’t supply them. Lol

[SuperChamp82]

Fair play @Jonathon Gillham - hadn’t thought about stock / blinky 🙄

Do agree about fans vs surface area cooling tho 

Your 1:1 engine block will be high grooved to increase surface cooling but w/o aerodynamics funnelling vast amounts of cool air over it - and more importantly the radiator / fans - you’ll do well to get out of the drive ...

That’s why @Problemchild’s scale intake is v clever - nice work JJ 👍

They do look nice tho - so understand why you went for it @whahooo 

[Superluminal]

Never underestimate the performance advantages of blue anodising.

[Juggular]

3 hours ago, Superluminal said:

Never underestimate the performance advantages of blue anodising.

Somebody needs to invent blue anodized tire.  

[Superluminal]

And motor magnets. Think of all them torques...

[highflyer]

Get a high speed motor fan, been using these fans for years.

[Problemchild]

Combined with my ventilation - my £4 cooling fans sit right in the airflow 

JJ

[Superluminal]

It looks faster already!!!

[Problemchild]

2 hours ago, Superluminal said:

It looks faster already!!!

Exactly

JJ

[Wooders28]

The esc was cutting out, and the motor smelling a bit ,after a speed run, so now the Dark Impact is wearing 3 fans! (2 extra) plus the Tamiya heatsink.

Heatsinks do work, of sorts, but need a bit of air flow to get the full benefit.

 

 

 

 

[Superluminal]

Did you have to cut a hole in the shell to havd the heatsinks poking outward?

[Wooders28]

5 hours ago, Superluminal said:

Did you have to cut a hole in the shell to havd the heatsinks poking outward?

Not that I remember, over a decade since they where fitted!

I have cut the air ducts ,to try and get more air past though.

[Problemchild]

9 hours ago, Superluminal said:

Did you have to cut a hole in the shell to havd the heatsinks poking outward?

For which car?

JJ

[Superluminal]

10 minutes ago, Problemchild said:

For which car?

JJ

The dark impact. The shell hugs the chassis very tightly and there is barely enough room for the esc and rdceiver wires to sit. The manual shows the heatsinks normally installed facing the other way but these would clash with the fan.

[XJman]

I do when i can. However i also try and have some type of hole in the body to actually increase the heat exchangers effectiveness. Now than I'm past going for power I'm probably not going to. My drift build may just for bling factor, but when i get my tt02/xv01 it's going to be a bonafide basher and I probably won't waste the time.