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Cooking splatter shields are cheap and provide plenty of material for several fans! ($2.50 Canadian at Dollarama)
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Fans like this would you run on a 2S or 3S battery although it has been made with a JST?
They are an amazing hobby shop. I am luckily indeed.@Knightfall
I just noticed you’re in Winnipeg. You’re lucky to have one of the best RC shops in the country there……Eliminator RC. I buy so much stuff from them I’m afraid to tally it up.
cheers,
kev
That is brilliant. Do you run the fans off a separate battery?I run a mojave. What i did was to totally protect the entire electronics bay from dirt and at the same time added an 8mm fan up front to blow air in the bay. I also cover the entire setup with plastic before putting on the body. Result, Zero to no dirt and cool running. I have a post on this: Mojave diy dirt shield and cooling system.
Yeah, I have the side by side set up on my speedrunner.@Greengaunja Stacking fans can in theory increase static pressure, but won't increase maximum airflow, and will also increase turbulence which may lower airflow. Your configuration there is quite open at the bottom and you probably won't benefit from increased pressure, so I'd expect the performance to be at best slightly worse than one fan. You'd be better off putting them side by side, possibly with higher spacing away from the can to give more room for outflow.
You could say that. This mesh was stripped from a eavestrough. We had a huge storm awhile ago and a tree collapsed a carport. Right away I saw two things that made this great for fans. It's finer than window screening and stainless steel to boot! I have maybe 60'x4" of it! One man's garbage is another man's treasure.Thx you get that meh locally? Someone just posted something similar for Amazon
The ESC fans blow in the Opposite direction, stock. They pull in air from the sides and exhaust up and away. Thats why they have a shroud around them.I like the idea of velocity stacks for fan covers as they're supposed to help smooth out airflow into a system as illustrated below. I do have questions as to their effectiveness when it comes to fans as you have a central hub in the middle which kinda messes with what the illustration portrays. It's possible that velo stacks are best used on open pipes such as inlet pipes, manifold or carb inlets, turbo/compressor inlets and the such like. Could be an interesting topic for some A/B comparisons.
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Cant imagine that works well at high velocity. Does it?So I decided to try the cowl idea and spent an hour sifting through materials and other crap compiled in the garage. Then said, where's that pile of broken Rocket fans I have. Took one, cut out the inner supports and removed the fan and stuck it on top of another Rocket fan. Not sure if this actually does anything (honestly I'd say no) but it left me wondering. What if I stacked two working Rocket fans like this? Would it be like a "turbo blast" fan?View attachment 234060
I've never had an ESC that pulls air from the sides and blows up. Every fan I've ever had in my hands rotates counter clockwise and blows down. This is easy to observe if you drive through dirt and grass which will get plastered onto the fan screen. If the fan blew upwards that shouldn't happen. The shroud is just to force the air down and through the heat sink fins and to prevent it from spilling out the sides. I've tried reversing the direction of fans but that doesn't seem to work. If you plug them in backwards, they just don't do anything.The ESC fans blow in the Opposite direction, stock. They pull in air from the sides and exhaust up and away. Thats why they have a shroud around them.
I've never had an ESC that pulls air from the sides and blows up. Every fan I've ever had in my hands rotates counter clockwise and blows down. This is easy to observe if you drive through dirt and grass which will get plastered onto the fan screen. If the fan blew upwards that shouldn't happen. The shroud is just to force the air down and through the heat sink fins and to prevent it from spilling out the sides. I've tried reversing the direction of fans but that doesn't seem to work. If you plug them in backwards, they just don't do anything.
All of these fans blow down. You can tell by the direction the blades are slanted in. If you turn them over...then they'll blow up. But I've never had an ESC with an upside down mounted fan.
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I just fired up my Spektrum Firma 150A and it sucks a piece of paper down. It doesn't blow it upwards. Same with my MMX8S, same with my XLX2. Maybe the BLX are different?Firma/BLX 100, 130, 150, 160 all do this out of the box. Mine did.
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It's one working fan and one shell. I just presented a theory of two possibly working like a turbo fan, but as you and another pointed out, turbulence would actually decrease efficiency.The ESC fans blow in the Opposite direction, stock. They pull in air from the sides and exhaust up and away. Thats why they have a shroud around them.
You can change the direction but id remove the shroud and put on a bigger heatsink.
Cant imagine that works well at high velocity. Does it?
Id think the turbulence would be way too high and reduce efficiency allot.
How well do fan covers work? Are some better than others do you have good results keep debris out?
Most all my fans have been swapped for tall 40mm fans or flat aluminum 40mm fans. I put covers on my fans but recently, they have stopped during a bash in dirtly with dead grass, no rocks that was on the Fireteam ESC & motor. I was able to spin free the ESC fan but the motor fan will not come back.
Question:
I bash in mostly dirt so is dirt the real killer?
How well do fan covers work for you to save your fans?
I have not overlooked the obvious that these fans do fail luckly for me I can only count 3-4 of the many RCs I have. I do bash in grass like on the golf course and I do have to stop to wipe grass off the fan covers when the temp gauge goes up so the the fans can take in fresh air, but they are still running.
I have been using these covers:
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I just got these covers in hopes to keep out most the dirt/grass. It's not as open but I do feel I am not going to be restricting pulling fresh air through the small holes
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Cooking splatter shields are cheap and provide plenty of material for several fans! ($2.50 Canadian at Dollarama)
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That's what I did too.Here was my solution to keep junk out of the max6 esc. 3drc 35mm fan cover with some screen under it and bolt it right on top. Will need longer screws though and for some reason the 3drc fan cover holes were too close together and I had to drill them out.
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