Best fan heat sinks??

[Daskraut]

I need a top quality dual fan mount this style. I hate thescrew between the fins B.S.. Got a source?

 

[TeknoJ]

I’ve used some yeahracing stuff. What size motor is it?

 

[BustedAw11]

Heat sinks are a joke for cooling. They do nothing more then trap heat. Ditch them all together and get yourself a fan mount such as this powerhobby mount. It can support dual fans. Them blowing directly on the can of the motor will cool way more then any heat sink could dream of.

 

[RustyUs]

Not knowing any information about which RC platform and its setup... maybe a bigger motor; lower Kv, more voltage, and gearing should be looked at first.

 

[nino]

I'll say it once again... A good fan and thin zip ties is all you need.

 

[WickedFog]

Not knowing any information about which RC platform and its setup... maybe a bigger motor; lower Kv, more voltage, and gearing should be looked at first.

Totally agree. If you're relying on a fan to keep things cool, maybe a rethink of all this stuff is needed. Fans - in my opinion, they aren't anything more than bling (to some people), added weight, etc. If you're doing a speed run car with ultra steep gearing, fairly sealed off electronics compartment, pushing the electronics to their limit - yeah ok. Otherwise, how much is a fan really helping?

 

[Slick2500]

Heat sinks are a joke for cooling. They do nothing more then trap heat. Ditch them all together and get yourself a fan mount such as this powerhobby mount. It can support dual fans. Them blowing directly on the can of the motor will cool way more then any heat sink could dream of.

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Yup I tell people this all the time especially when they add a heatsink to a ribbed motor can. Air is an excellent insulator. Then I've seen these fools putting giant gobs of thermal paste under the heatsinks to "fill in the air gaps".

 

[Slick2500]

Totally agree. If you're relying on a fan to keep things cool, maybe a rethink of all this stuff is needed. Fans - in my opinion, they aren't anything more than bling (to some people), added weight, etc. If you're doing a speed run car with ultra steep gearing, fairly sealed off electronics compartment, pushing the electronics to their limit - yeah ok. Otherwise, how much is a fan really helping?

They help more than you think. Pull the fan off a Max8 or Max6 esc then go for a bash session tell me how it goes.

 

[BustedAw11]

Totally agree. If you're relying on a fan to keep things cool, maybe a rethink of all this stuff is needed. Fans - in my opinion, they aren't anything more than bling (to some people), added weight, etc. If you're doing a speed run car with ultra steep gearing, fairly sealed off electronics compartment, pushing the electronics to their limit - yeah ok. Otherwise, how much is a fan really helping?

You serious?


This sounds like the words of inexperience speaking.

Now... I know I've seen your name around a long time so this confuses me.... unless your racing on a 2s limit with very light rigs- you should be running a fan..

It isn't a motor and kv problem. These rigs we run these days aren't light. And the power we put through them is ridiculous. They are gonna run hot if you are running pretty much anything at any sort of potential.

 

[RustyUs]

You serious?


This sounds like the words of inexperience speaking.

Now... I know I've seen your name around a long time so this confuses me.... unless your racing on a 2s limit with very light rigs- you should be running a fan..

It isn't a motor and kv problem. These rigs we run these days aren't light. And the power we put through them is ridiculous. They are gonna run hot if you are running pretty much anything at any sort of potential.

I don't run a motor fan on any of my rides... yet. The only one, at the moment, that I'd consider putting a fan on is my monster truggy... and that's if I only run it longer than 15 minutes. If pushing a motor's temps just a tad bit more than you like and trying to make it through a main/qualifier... by all means... use a fan.

 

[BustedAw11]

I don't run a motor fan on any of my rides... yet. The only one, at the moment, that I'd consider putting a fan on is my monster truggy... and that's if I only run it longer than 15 minutes. If pushing a motor's temps just a tad bit more than you like and trying to make it through a main/qualifier... by all means... use a fan.

Man I havnt raced since we built our own nickle metal battery packs..

My info, as stated, is for the bashers. Not the racers. What a racer needs for a lightweight race rig on limited power is no where near what almost any basher requires..

If your running 3s-6s bashing- your better off with a fan.. if you plan on having good fun anyway.

 

[WickedFog]

You serious?


This sounds like the words of inexperience speaking.

Now... I know I've seen your name around a long time so this confuses me.... unless your racing on a 2s limit with very light rigs- you should be running a fan..

It isn't a motor and kv problem. These rigs we run these days aren't light. And the power we put through them is ridiculous. They are gonna run hot if you are running pretty much anything at any sort of potential.

Yeah, very serious. Now I am referring to the motor here. There is a right combo out there for just about any rig for it to run cool without fans. It all comes down to final drive ratio, weight, tire diameters, terrain, etc. If you're needing a fan on your motor, you're not running the optimal setup for your situation, simple as that.

That being said, for example your rig's weight might be so heavy, their isn't a possibility for an optimal setup do to available space, motor mount, etc. In that situation, yeah, a fan might help. But how much is that fan actually helping considering your car is driving more air across that motor just by simply driving it?

Or you might be trying to push every bit you can out of your RC, as I mentioned speed runners do.

I've been running RC's since I was a kid. Over 40 years now. I have never once added a motor fan to any of my RC's. Maybe it's because I don't push my RC's to the limit. 50mph for a 1/10 scale basher is more than enough for me. Anything beyond that is just ridiculous.

But yeah, you don't need them.

Our Kraton 6s v3 is running a 20t pinion (stock is 15t). It hits 70+mph easily with the addition of nearly every M2C aluminum upgrade there is. In grass the motor gets up to around 170°F if ran hard. There is the stock fan on the ESC, but nothing on the motor. It does just fine. I have about 40 other RC's right now with no motor fans on any of them.

 

[WickedFog]

They help more than you think. Pull the fan off a Max8 or Max6 esc then go for a bash session tell me how it goes.

This thread is discussing a motor fan bro

 

[Littlemotor]

Ahhhhh, the age old fan/no fan pissing contest… (or what this thread has morphed into, anyhow)

While I can’t steer you in the direction of a heatsink/fan mount combo that doesn’t have screws between the fins, like you are inquiring-I’ll share my thoughts on the argument..

There are many facets to this dealio imo, and most have been touched on already.

Motors produce heat. This is inevitable. This comes down to a number of variables as well; vehicle weight, gearing, tire roll-out/circumference, proper wire size, proper connectors, CLEAN solder joints, BRAKING (which nobody has mentioned thus far, and is a BIG contributor-especially when attempting to bring one of these heavy pigs to a stop from 40, 50, 70mph), ambient temperature, driving style, driving/bashing/racing surface, vehicle DRIVELINE MAINTENANCE (sooooo often overlooked ) and airflow..

I (like many others) am of the mindset that you first need to do the math, and make sure you are geared correctly (obviously factoring in tire roll-out) for your specific setup to be EFFICIENT. This should get you in the ballpark of where your stuff is happy, and not being abused/trashed because it’s simply overloaded. This is a situation where if you get it wrong, MANY people will throw a fan or two on the motor in order to BAND-AID the mathematical screw up (which is exactly what it is ), and they bring their temps to what is acceptable to them. This may even be an acceptable temp to the motor manufacturer, and so they feel as though their setup is now correct (even though it’s based on shiit math from the word go). The problem with this method is that even though it’s an “acceptable” result-if/WHEN the poopy plastic blades on the fan get damaged, now your motor is smoked too… Common sense lol..

You can absolutely err on the side of caution (as most folks that've been in this hobby for any real length of time at all DO), and do the math right, don’t overload your whip with a bunch of horrible aluminum parts, beadlock, belted, blah blah blah rolling stock that is heavy AF, drive in ultra thick/tall grass, or (gasp) mud, don’t be all or nuthin’ on throttle/brake nonstop for the entire run, and your motor will stay nice & cool..

There’s also that middle ground that most things revolve around imo… I personally do the math, don’t overload my vehicle, and drive with some sense, but ALSO (if I feel it’s needed due to the duty of a specific vehicle) will absolutely run a quality motor fan, and on a quality mount for piece of mind, AND to keep my motor a bit cooler than it runs without it. You don’t need to be a rocket surgeon to know that a fan definitely will keep your temps cooler than without, if you have any brain cells in your melon lol..

My 1/8 race truggies are a fine example of this- proper gearing, quality electronics, solid wiring and soldering, and driven fairly hard, but on a low rolling resistance surface (dirt, like it’s meant for). Tekin advises to keep the motor temp under 185F. Without a fan, and with proper gearing for MY layout, driving HARD consistently-after a 15-18mon run, my motor temps at 180F on an 85deg day. When I toss a quality single fan on a quality non-heatsink mount, it’s 155-160F. That’s exactly what a fan on a NON-band-aid’s setup SHOULD drop the temps by. And if/WHEN my fan spits a blade or three (they are PLASTIC after all, and we DO run in DIRT)-my motor is absolutely FINE, and still under what Tekin recommends.

This is how I run my TRUCKS. My buggies don’t have NEAR the driveline weight, vehicle weight, or tire circumference to require a fan to achieve the same temps-post hard run. Therefor, I likely won’t ever run a fan on a 1/8 ebuggy, as it’s flat out not required in my neck of the woods.

For my little 1/12 mini-truggy, it is MASSIVELY overpowered (NOT overgeared, or overloaded), there again-a fan is simply not required..

As was mentioned, MOST high end/high quality motors today already have heatsinks incorporated into the can. I personally do not see the need for these massive “Integy” lookin’ heatsink/fan mounts. Back in the day we used Litespeed heat sinks as the cans were STEEL, and needed all the help they could get. We also ran EVERYTHING on the absolute ragged edge of destruction. They worked, period. We also didn’t have FANS…

At the end of the day, it’s a lot of (required) MATH, common sense, and then PERSONAL PREFERENCE;provided your setup is a solid one, and you don’t abuse the piss outta your vehicle by driving like a clown, on the wrong surface, and with a metric ton of stupid shiit all over your whip because it “looks cool”.. Even if you do, then go back to the MATH, and compensate for that by reducing your gear ratio to something halfway sensible.

There will ALWAYS be the Tekin vs Hobbywing, Nitro vs Electric, Arrma vs Traxxas, and obviously fan vs no fan.. Use your head, and do whatever helps you sleep at night.

 

[fstnd]

Then I've seen these fools putting giant gobs of thermal paste under the heatsinks to "fill in the air gaps".

The point of thermal paste is not to remove the air but to conduct heat between the motor and the heat sink. Otherwise you could use vaseline lol

 

[TeknoJ]

Next, we should probably argue over what 2-stroke oil is best

 

[Daskraut]

I’ve used some yeahracing stuff. What size motor is it?

550 36mm. Looking for a twin fan, offset style

 

[TeknoJ]

550 36mm. Looking for a twin fan, offset style

What car is this in? Could it be a simple pinion change or use a lower voltage battery?
Do you know what temps the motor is hitting?
I don't have a source on a good 36mm fan mount. I use a heat sink on a few of my cars, and they do work, I just like seeing my electronics a little cooler so some run heatsinks some don't.
Heat sinks have worked for me, so have the fans, I end up removing the fans after I find the sweetspot in gearing.

 

[Grandad]

If fans are not needed, then why does Arrma include one on the Kraton 8s?

It would depend very much on the type of car along with the type of driving.

 

[BustedAw11]

If fans are not needed, then why does Arrma include one on the Kraton 8s?

It would depend very much on the type of car along with the type of driving.

Optimized setups wouldn't HAVE to have them. Problem starts when one realizes almost no rtr sold is Optimized. So stock benefit from them.
You know... most folks vehicles now days.
Every manufacturer out there runs them. They do it because they push these further then they should to get the good stock numbers. That's what sells......