Kpowell911 Posted June 8, 2022 Share Posted June 8, 2022 Hello, Ive always been adamant than fans are a gimmick, Facebook RC Groups seem to plaster them everywhere…… however, Ive always been kinda dubious, and think theyre just masking an issue. However, can they be used sensibly to improve temps? I notice them a lot on racers when I go to race meets,, they have some nice alloy fans facing their motors, and these are high ish level racers….. So am I missing a trick? Can anyone recommend a decent alloy fan/heatsink mount for a 4274 motor? My E Revo just got a touch hot haha Quote Link to comment Share on other sites More sharing options...
locky Posted June 8, 2022 Share Posted June 8, 2022 Yeah Racing have a clamp version with two tornado fans which are very good fans, never found any other fans which shift the same air volume, always best to stand the fan off from the motor to improve air flow. I think they do help to reduce the surface temp, not sure if this actually makes a big difference to the internal rotor/magnet temp. Aliexpress now have a copy of the Yeah version as I just ordered one. Using a heat conductive soft mat between the sink clamp and motor also ensures good contact. 1 Quote Link to comment Share on other sites More sharing options...
locky Posted June 8, 2022 Share Posted June 8, 2022 A temp gun is useful as fingers arent that accurate. 1 Quote Link to comment Share on other sites More sharing options...
locky Posted June 8, 2022 Share Posted June 8, 2022 Some report a temp difference of about 20F or about 7 deg C with fans. I tend to avoid constant temps above 160F, as claimed that's when magnets start to degrade and glue breakdown. CPU thermal paste can also be used to conduct the heat between the can and sink. 1 Quote Link to comment Share on other sites More sharing options...
Kpowell911 Posted June 9, 2022 Author Share Posted June 9, 2022 6 hours ago, rccar4life said: These fans are great, strong, long lasting stock ones i blow in less than 10 runs, these i have in almost al my rigs, and some i have run more than 60 runs whit these fans https://www.modelsport.co.uk/product/smd-surpass-aluminum-high-speed-fan-28-000rpm-443153 love these Surpass is the original, there is many different brands REBRANDS same fan another brand like this 3x the price https://www.modelsport.co.uk/product/whitz-hypercool-aluminium-fan-30mm-neon-green-1342940 stay to the cheap and great original Surpass Mount you maybe have already, you need a mount for 42size motor and 30mm fan, single or dual fans. These blow hard. at 7.4v 1 should be ok in bad setups maybe go dual edit last but not least this cover is fantastic https://www.modelsport.co.uk/product/dusty-motors-traxxas-e-revo-e-revo-20-e-maxx-summit-protection-dust-cover-black-422602 i have them to all my rigs. No more stones in fans, center diff and so on. Saves bearings and everything. Great must have item if you run alot in sandy stone areas like offroad. Summer it keeps dirt and stones off. Winter snow. Love these dusty covers They are awaible to the most popular rigs, also in universal from size M to 5xl I have 5xl to my 8S Kraton 1/5 others specific to the rigs I love these covers coolingFans , electonics, center driveline, and bearings love this too and shocks, in revo you will have your shocks protected too other cars you cut the universal piece that comes with this cover to your normal placed shocks Thanks, ill look into those surpass fans. Was just curious if they just cool external temps, and damage is still being done on the inside. Quote Link to comment Share on other sites More sharing options...
Darren Frosty Posted June 9, 2022 Share Posted June 9, 2022 I've drawn a shroud that you can print that takes a 40mm fan if you want the .stl to print? I might have even uploaded it to thingiverse (can't remember) Quote Link to comment Share on other sites More sharing options...
Darren Frosty Posted June 9, 2022 Share Posted June 9, 2022 https://www.thingiverse.com/thing:5353338 Quote Link to comment Share on other sites More sharing options...
Lone-wolf Posted June 9, 2022 Share Posted June 9, 2022 I have used cooling fans on motors that get hot and i say they work, and not that expensive to give it a try Quote Link to comment Share on other sites More sharing options...
locky Posted June 9, 2022 Share Posted June 9, 2022 Higher rpm does not necessarily equate to more airflow, they will reach a RPM at which they will push no more air. Most cpu fans run at a few thousand rpm. Suppliers should give Cubic Feet per Minute values at specific voltages to compare. Quote Link to comment Share on other sites More sharing options...
Shergar Posted June 14, 2022 Share Posted June 14, 2022 I’ve often wondered if a forced air scoop would be more more effective in cooling a motor? 1 Quote Link to comment Share on other sites More sharing options...
locky Posted June 14, 2022 Share Posted June 14, 2022 3 hours ago, Shergar said: I’ve often wondered if a forced air scoop would be more more effective in cooling a motor? Do you mean making an inlet in the body to allow more air flow? 1 Quote Link to comment Share on other sites More sharing options...
Shergar Posted June 14, 2022 Share Posted June 14, 2022 Yup 👍 Quote Link to comment Share on other sites More sharing options...
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