Kraton Those expensive fans - is it worth it.

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RC-Dude

RC-Dude

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Are those aluminium casing fans just for the bling? Bascially all 40mm fans run endless. Until some little stone breaks off on fan blade. That's it then.

Just wondering about the price range of 40mm fans.

Is it worth it to pay more for fans? Or are the cheapest ones good enough?
 
RC-Dude said:
Are those aluminium casing fans just for the bling? Bascially all 40mm fans run endless. Until some little stone breaks off on fan blade. That's it then.

Just wondering about the price range of 40mm fans.

Is it worth it to pay more for fans? Or are the cheapest ones good enough?
Click to expand...
Nothing is endless and last forever, unfortunately. Yes, they are worth the money, FWIW. I like RCP (Radio Control) is excellent so much that I removed my Game Changer fans with RCP.

However, a person posted the eBay 40mm servo aluminum fans. They are great as well. They require wiring a connection, but they are cheap and work great!

@RC-Dude

ebay
https://www.ebay.com/itm/195008975600?hash=item2d6770d2f0:g:uHkAAOSwfLJiafxK&amdata=enc:AQAIAAABILUUCUxddLxCFUrVgo5TUuEFzmgyNXP5rX0nnvoPe3HDs8C4RR80/Y60URdsoJEvrZr4BAKX/62FFEzAECnW0KNRWcxCbJsJ8i26MkuJAuJDIgsuUzyw5TogKDKVm25nVZ4Ve4eBNBiktfpFuSCdfAkF51LJ9m+i0u6wJhUYF3GWzdHH7L/TEtYX4Z+pDI55v6L64lfUjvLDL2H3MjxREPGZZ54sVMLBM4EryW8l6tULXtWslPBxdKFsT4YyOudjcXHx5bOM1sWAYdy7rjkuYy5yzBKIsR+P3ZQUp6blXPoeYtsV1PdNedqiEG8zuTMWqINOnGZ90jNlscAsZFugEzyrFgGyAPo/WcMg1sVcBbty16bjHwLV6XzlpcBEc9fNrQ==|tkp:Bk9SR9Kg2OGRYg

RCP
https://www.radiocontrolpower.com/p...l-40mm-high-speed-rc-fan-8-volt-plug-and-play
 
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I tried the whole buy cheap plastic fan thing thinking the same for a while, then bought some Rocket fans. Not only do they cool better, they are holding up really well.

When they die I will replace them with the ducted style ones. I have the below one on my XRT and it moves some insane amount of air compared to the slim style Rocket fans

https://www.ebay.co.uk/itm/125786091295?var=426776956706
 
Yes with the others above, the aluminum fans are worth it. If you're breaking fan blades from rocks (or as it happened in my case, wires), then you need to do something to protect the fan blades like using screen mesh or a fan cover.

FWIW, i saw these on amazon just recently. It looks to be your standard, generic, 16000rpm 40mm fans for a good price.
https://www.amazon.com/dp/B09FLXHD82
 
Need to upgrade a few different rigs with fans. So that's "price of fan" multiplied half a dozen+ times.

Most of my rigs have 6 Volt Servos. And they are staying in there until broken. So it needs to be 6 Volt fans in a those rigs. Having an extra battery pack for a basher just seems unpractical. Seems the 28mm high / 40x40mm 12V fans have a working range of 7- 13,6Volt. So a 6 Volt Servo setup does not allow for the higher voltage.

So some of the mentioned fan options are not the perfect fit right now. Although they look cool.
 
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Some have had good luck with this...

https://www.amazon.com/dp/B0BF8J4Y7...HSDL3TES&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it

But I have been using these 40x40 x 20mm tall in Pairs with a Motor Double FAN MOUNT. With No Heat sink runs cooler. My temp gun doesn't lie. Toss the Heat Sink if you are still using them.
Runs at 5v minimum, 28CFM's of cooling effect is strong enough. At 20mm they are taller, the blades don't break.
I run them at 7.4 volts easily. Just need to do some easy soldering to change out the connectors.. for BEC power.
Been very lucky with these. The longest lasting fans I've used so far. I have probably purchased well over $200. in fans in the past 5 years.:rolleyes:
Tried them all. I stay away from the super heavy and large Aluminum fans that need a lipo pack. For bashing I feel overkill.

https://www.amazon.com/gp/product/B07Q2K3WYM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

I run these PC fan grilles. I find they are best. Been through all the fancy RC boutique ones. These below won't restrict any airflow. Functional.

https://www.amazon.com/gp/product/B07Q2K3WYM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
 
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RC-Dude said:
Need to upgrade a few different rigs with fans. So that's "price of fan" multiplied half a dozen+ times.

Most of my rigs have 6 Volt Servos. And they are staying in there until broken. So it needs to be 6 Volt fans in a those rigs. Having an extra battery pack for a basher just seems unpractical. Seems the 28mm high / 40x40mm 12V fans have a working range of 7- 13,6Volt. So a 6 Volt Servo setup does not allow for the higher voltage.

So some of the mentioned fan options are not the perfect fit right now. Although they look cool.
Click to expand...
It doesn't NEED to be a 6v fan. As long as the fan has higher voltage, it can run any lower voltage just fine. I'm running 12v 4028 servers fans on a 6v BEC for my MT410 right now, they are a little slow on 6v, but they still blow good air. Just don't do the other way around and run a lower voltage fan on higher BEC voltage (like a 5v fan on BEC running 8.4v).

If you want cheaper fans, buy off aliexpress. You'll have to be patient with shipping, but the price is unmatched. Just recently made a big purchase of fans myself...
https://www.arrmaforum.com/threads/what-did-you-buy-today.48/post-945520
Check out seller BYRC on aliexpress: https://www.aliexpress.us/item/3256803066204177.html
They charge shipping but have cheaper prices. The trick is that when you buy multiple items, the shipping can be partially combined and save you a bunch of money.
 
+1
It's all about the amount of CFM's a fan puts out. Just because a smallish fan screams loud and fast wont mean it is pushing so much in CFM's. (Cubic Feet per Minute) Slower RPM fans that are quieter with High CFM's is all you really need. Usually the Taller 20mm+ fans do this. 28 CFM fans give or take, seem to be the ticket. In pairs, on a Fan mount is best IMHO.
The small high speed fans tend to break more easily from my experience.
 
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The biggest issue with aluminum structure fans is the fragile light gauge wiring while bashing constantly bending the strands eventually severing.

I glue the exit from the board bottom/heat shrink and ensure no sharp turns in routing, several heavy bash rigs have over a year on rocket/knockoff manufacturer alloy fans. Only had to replace plastic housings on dozens of total fan applications.
 
+1
Yeah I always use either some Hot glue Or Liquid electrical tape onto the wires's soldered joints at the PCB of the Fan before I install them. Best for "Strain Relief", as I stated above somewhere. I find this is a weak link for sure. With most any Fan. The soldering quality is so very poor out the box. Flapping Fan wires is NG. Bashing hard will damage any fan in this regard. Sometimes within a pack of use. Been there.
 
All good advice above.... find what you like.

For me, it is about planning and fans are in my build plan. Rigs that have a low body like the Typhon TLR limit me to the smaller fan but 40mm. I have a temp prob on all my rigs to see active temps. Those fans work great on the TLR.

When it comes to the Talion it has a low body and took some planning to get a 40mm tall fan in there but did find a way about that build. I'm impressed with the fans because while bashing I can see the active temps so pleased to see how well they do over the stock stuff. Even if one stopped, it will be replaced.

TLR low-profile
1686089441029.png



Talion EXB low body
1686089511604.png

1686089531768.png
 
RC-Dude said:
Sounds interesting. What kind of setup do you use to see the temperatures while driving?
Click to expand...
Homemade.... :LOL: I stole the idea from Jae-Tee from one of his videos on his Limitless. Amazon temp probs and used those to place on the motor to get temps.

I did the same. On my HW ESC, I JB Weld it to the ESC. On the motor, I use thermal tape on the back of the motor. But @Tex Koder created a holder for me for the 36mm motor, but waiting on one for the 40mm motor then the tape will not be needed. Now it is not exact I am aware of that no different from a temp gun. I never see this happen...but if temps were going over 170F motor and 150F ESC I can stop bashing... easy check to drive it by me and look and keep bashing. Works great for me...maybe not others.

Temp probs here

1686090962941.png

1686091196863.png



1686091007599.png
1686091057497.png

1686091117305.png
 
RC-Dude said:
I like what I see...

This one?

https://www.amazon.de/PEMENOL-DC4-28V-Display-Digital-Thermometer-Wasserdichtem-Metallfühler-Temperatursensor/dp/B07R9HNJP5/ref=sr_1_6?__mk_de_DE=ÅMÅŽÕÑ&crid=6FVOG2NDP9I&keywords=temperatursensor+digital&qid=1686091686&sprefix=temperatursensor+digital,aps,97&sr=8-6&th=1
Click to expand...
Yes!

That is the one. There could be better, but it works well for me. At the end of the power wire, I cut it off. Then I take a JST end if I am using a y-splitter or JR connection if I plug it in the receiver and solder it on. When I build a rig, it is in the planning for lights, fans, etc. For each rig, I power differently depending on the layout and placement.

Once I have an end on it, it gets power from the RC. My goal with these is not to know the EXACT temp yet to know when I am going into a danger zone with heat for my ESC/Motor and I can stop. Compared to bashing it and not knowing the motor is 200F and the ESC 210F. Or bashing it too long before bringing it back to check temps. Or, the pain of taking to the body on/off.
 
Thanks! Very helpful all these answers.
Just ordered two and some wider thermal tape. (y) (y)
 
@East tactics has a great YouTube series all about DIY high powered fan. I think 9 videos specifically about them and all the parts (in the video description he links an Amazon shopping list with all parts) you need to build them yourself vs paying $100 for a kit.

I’m starting the process this week and can update ya. Half of my stuff was delivered today.

Link to his YouTube Playlist https://youtube.com/playlist?list=PL9UjUE_DygV9w_KTuR7N0l-ygVhWPtNVw
 
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