You've been such a huge help in helping me understand the electronics of these cars. I've always relied on setup and driving but since coming across your videos I've learned enough to find a new level of performance. Thanks for the videos!
Awesome video sir, appreciate the time taken to show us which fans to go out and buy. Bought myself a 40mm wtf fan and a exotek fan mount to fit on my 8th scale buggy. If it works as well as I think it will I'll be converting all my other rigs fans to the wtf fans, both motor and esc alike.
Completely unrelated to RC Cars: your video helped me with determining ideal operating voltage for a 3D printer 30mm hotend cooling fan. There's a gap in the 30mm DC fan world, it goes from really poor static pressure/CFM (even with 24V models) to these high performance RC fans that run at lower voltages with much higher RPM. No idea why there's such an odd gap, probably supply and demand.
Hi I did consider listing the current draw, but it is so low at about 0.2 Amp that it will make no difference to the start voltage or power over a race.
REally entretained by your testing, you got a new suscriber =) Btw at some point would be great to see how it measures vs fans like Noctua NF-A4x10 FLX (it runs 12V but allows undervolting fine) Noctua NF-A4X10-FLX 5V (not sure if it can run above 5V)
Hi Pabula The Noctua fans are low revs and very low noise, and made for quiet cooling applications. There is a 5volt version, but the specified airflow is not as good. The WTF 4010 fan has an airflow of 8cuft/min at 5 volt. The Noctua NF-A4x10 Premium 5V is: Rotational Speed (+/- 10%):4500 RPM Airflow:8,2 m³/h (4.82 CFM) Acoustical Noise:17,9 dB(A) So probably not as good. All the best Nick
Hi Nick. Great video as usual.I've started running a WTF 30mm fan on my 17.5 motor in my buggy. I've found that this fan drastically reduces the temperatures. My question is do motor fans do much to cool the internals of the motor or just the surface of the can? I'm guessing that a cooler can would help dissipate heat from within the can (the internals). Thought?Thanks!
Hi Dimitri You are correct. The heat in the windings will be reduced as the heat can be conducted through the metal case. The rotor magnet will not cool as much, but the whole motor will run longer without overheating or failure.
Seems to me you are measuring more of static pressure than actual CFM. This actually is probably a good thing as the air is being forced around a heatsink typically. This is kinda how it goes in the world of PC cooling as well.
Hi, Thanks for the feedback. It was a quick test, as using a air flow meter would have taken much longer. And as you say the results are useful in the real world environment. All the best. Nick
Hi. Not sure what a Block battery is, but it is too high, unless it drops to about 8V under load. The fan will be good on 5Volt. Try it and see. Feel the temperature of the middle of the fan, where the electronics are, and if it is very hot then it will burn out.
@@nickadams5411 okay, I have severe overheating issues (motor reaches 70-80°C after half a pack and that in spring..) Can't imagina how bad it is in summer. Do you think the wtf Fan is better on 5v than a regular sunon 40mm 5v fan?
@@nickadams5411 and a 9v block battery is a one time use non rechargeable alkaline battery, I found two half empty ones, one 8.3V one 8V so that should work
Hi Nick Adams, i just subscribe to your channel, can u make a review on your 25mm small fans for cooling with thir respective working voltage and witch one is better for the job. I need one thats 5v dc but i need it to blow alot of air under 12v dc.
Nick adams demon products helped me win Ko grand prix at west london in 2014 thanks mate fastest time of the day and won 27 turn stock A Final to get my first major title win
Love your video reviews!
Thank you so very much for all your work and attention to details!
You've been such a huge help in helping me understand the electronics of these cars. I've always relied on setup and driving but since coming across your videos I've learned enough to find a new level of performance. Thanks for the videos!
agreed
Hi Matt
Thanks for the feedback.
I try and give the facts and let the racer use them to go faster.
Race to win.
Nick
Excellent video and test! Thank you for taking the time to do so.
Awesome video sir, appreciate the time taken to show us which fans to go out and buy. Bought myself a 40mm wtf fan and a exotek fan mount to fit on my 8th scale buggy. If it works as well as I think it will I'll be converting all my other rigs fans to the wtf fans, both motor and esc alike.
Trust me he knows his stuff and has been in the sport many years
Completely unrelated to RC Cars: your video helped me with determining ideal operating voltage for a 3D printer 30mm hotend cooling fan. There's a gap in the 30mm DC fan world, it goes from really poor static pressure/CFM (even with 24V models) to these high performance RC fans that run at lower voltages with much higher RPM. No idea why there's such an odd gap, probably supply and demand.
Thanks for sharing this great info!
What about current draw over time. Example just sitting on the line 30s how much Voltage do I lose
Hi
I did consider listing the current draw, but it is so low at about 0.2 Amp that it will make no difference to the start voltage or power over a race.
Very useful information, keep up the great work.
REally entretained by your testing, you got a new suscriber =)
Btw at some point would be great to see how it measures vs fans like
Noctua NF-A4x10 FLX (it runs 12V but allows undervolting fine)
Noctua NF-A4X10-FLX 5V (not sure if it can run above 5V)
Hi Pabula
The Noctua fans are low revs and very low noise, and made for quiet cooling applications.
There is a 5volt version, but the specified airflow is not as good.
The WTF 4010 fan has an airflow of 8cuft/min at 5 volt.
The Noctua NF-A4x10 Premium 5V is:
Rotational Speed (+/- 10%):4500 RPM
Airflow:8,2 m³/h (4.82 CFM)
Acoustical Noise:17,9 dB(A)
So probably not as good.
All the best
Nick
Extremely helpful video
Hi Nick. Great video as usual.I've started running a WTF 30mm fan on my 17.5 motor in my buggy. I've found that this fan drastically reduces the temperatures. My question is do motor fans do much to cool the internals of the motor or just the surface of the can? I'm guessing that a cooler can would help dissipate heat from within the can (the internals). Thought?Thanks!
Hi Dimitri
You are correct.
The heat in the windings will be reduced as the heat can be conducted through the metal case.
The rotor magnet will not cool as much, but the whole motor will run longer without overheating or failure.
Nick Adams rr
nice video thanks for taking the time
Seems to me you are measuring more of static pressure than actual CFM. This actually is probably a good thing as the air is being forced around a heatsink typically. This is kinda how it goes in the world of PC cooling as well.
Hi, Thanks for the feedback. It was a quick test, as using a air flow meter would have taken much longer. And as you say the results are useful in the real world environment. All the best. Nick
Is it safe to run a WTF 40mm fan off of a 9V Block battery? Don't want to buy a seperate lipo and my BEC only has 5V
Hi. Not sure what a Block battery is, but it is too high, unless it drops to about 8V under load. The fan will be good on 5Volt. Try it and see. Feel the temperature of the middle of the fan, where the electronics are, and if it is very hot then it will burn out.
@@nickadams5411 okay, I have severe overheating issues (motor reaches 70-80°C after half a pack and that in spring..) Can't imagina how bad it is in summer. Do you think the wtf Fan is better on 5v than a regular sunon 40mm 5v fan?
@@nickadams5411 and a 9v block battery is a one time use non rechargeable alkaline battery, I found two half empty ones, one 8.3V one 8V so that should work
@@ELValenin Hi. Yes the WTF will be better than the Sunon on 5V. What voltage is the battery in your vehicle. Is it a car?
@@ELValenin Hi, Yes try them. But check temperature of fan centre.
Excellent video, thank you
Hi Autor. Can you tell me which fan to buy? Wtf 40x10 34x16 30x10 . ? Thank you
Hi Dennis
Use a 40mm fan for motor cooling.
The WTF 40mm fan is also sold by MR33.
I use the CoreRC CR251
Nick Adams Thank you so much !!!!!
Nick Adams I have a 30mm motor
Then fit the smaller one, if it needs to be smaller.
The airflow is what takes the heat away, so the more air blown over the motor, the better.
This is what i was looking for thanks WTF it is 👍
very informative! thanks
Hi Nick Adams, i just subscribe to your channel, can u make a review on your 25mm small fans for cooling with thir respective working voltage and witch one is better for the job. I need one thats 5v dc but i need it to blow alot of air under 12v dc.
Wich fan can i use should i look for cfm's or wich air volume is greater then 5 m3/h ?.. I have no idea
you should have tested the r1 wurks fan sir.. its very strong and quiet :)
Ich hätte mich gerne für dieses Video bedankt, allerdings sind diese Lüfter mittlerweile fast alle nicht mehr zu kaufen...
thank you
Very helpfull
Try some game changer typhoons lol 🤘😆
Nick adams demon products helped me win Ko grand prix at west london in 2014 thanks mate fastest time of the day and won 27 turn stock A Final to get my first major title win
gforce-hobby.jp/products-en/G0108.html
get that fan.. says 12v max