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| PL1:
--- Quote from: bobbyb13 on March 15, 2023, 04:49:43 am ---No matter what I may hear from anyone about component heat tolerance I will be putting a fan on this heat sink also. Only question is should it be mounted directly to it or not and should it be pushing or pulling in relation to air movement across the heatsink. --- End quote --- For an open layout like your setup, I'd go with push for better directionality. - Pull will draw air from the path of least resistance. The far side of the heat sink will not get as much air flow. I'd probably put the fan(s) to the left of the heat sink and slightly above it, blowing parallel with the cooling fins and slightly downward so the air blows through the entire length of the fins. Scott |
| bobbyb13:
I was thinking along the same lines but wasn't sure if my thinking was correct. Only other possibility was is it even better to put the fan in the side of the cabinet and have it draw air from outside to blow across the heatsink. Thanks as always for your thoughts Scott! --- Quote from: PL1 on March 15, 2023, 10:44:55 am --- --- Quote from: bobbyb13 on March 15, 2023, 04:49:43 am ---No matter what I may hear from anyone about component heat tolerance I will be putting a fan on this heat sink also. Only question is should it be mounted directly to it or not and should it be pushing or pulling in relation to air movement across the heatsink. --- End quote --- For an open layout like your setup, I'd go with push for better directionality. - Pull will draw air from the path of least resistance. The far side of the heat sink will not get as much air flow. I'd probably put the fan(s) to the left of the heat sink and slightly above it, blowing parallel with the cooling fins and slightly downward so the air blows through the entire length of the fins. Scott --- End quote --- |
| Zebidee:
--- Quote from: bobbyb13 on March 15, 2023, 04:49:43 am ---Tomorrow hopefully I can go buy a stack of refrigerator magnets (the thin flexy kind of bits you can cut into strips- it is what I have seen on tubes anyway) and begin experimenting. --- End quote --- From what I've heard, fridge magnets are not great for convergence strips. Some seem to have better luck with craft knife blades, which can be snapped to appropriate size, and magnetising them by running a permanent magnet along them a few (?) times. Then you wrap them in tape and position accordingly. If you are ever trashing an old CRT, is a good idea to grab any useful bits like convergence strips, rubber yoke feet, degaussing coils, maybe even the yoke itself. --- Quote ---No matter what I may hear from anyone about component heat tolerance I will be putting a fan on this heat sink also. Only question is should it be mounted directly to it or not and should it be pushing or pulling in relation to air movement across the heatsink. Also looks like I will be putting some good size vent holes in this cabinet. --- End quote --- Scott's right, have the fans blow over the heat sinks. I'm thinking you could use multiple fans, maybe two 4" fans? I'd also suggest a large fan (quieter), at a vent near top, to draw hot air out. Put in a vent at the bottom to stimulate airflow throughout the cab. |
| bobbyb13:
I had forgotten that the way I built the cabinet there is a huge vent across the front toe kick panel. If I just drill a hole in the top panel and put a fan sucking out on it that should help immensely. I might actually shift the deflection board over to the side of the cabinet and put a fan underneath it pushing air through the slots and up. The pair of fans I ordered came in today so we'll see how soon I can get to this. I have a roll of magnetic tape and a few small cake neodymium magnets so we'll see what I have learned after a little experimentation. |
| Xiaou2:
Fans do not "Suck" anywhere near as good as they "Blow". You can test this for yourself.. with a standard box fan. Place the fan facing away from you... and see if you can tell any difference. Then point it towards you. The thing about "Air" is that it behaves like a Fluid... and Fluids flow and swirl, in very chaotic directions. All PC Servers, use Forced Air, to blow through them... as do standard CPU coolers. Anyone that has tried to reverse their CPU cooler fan to "Suck" the heat away... has typically ended up having their CPU permanently Fried. (or severely heat "Throttled".. until it completely overheats and auto-shuts off) Most Arcade Cabinets have top vents for rising hot air to escape. And many even have Fans that are mounted towards the top of the cab, that push out of the top-rear of the cabinet. Additionally, some cabinets have Inlet fans at the bottom... to pull cooler air into the cab.. with the top fans blowing hot air out of the cabinet. * Actually, the fans at the bottom, are probably more to cool the Power Supply / Transformer units, that typically sit down there. I highly recommend using a good cooling fan, blowing directly across your heat-sinks. The cooling will be Far more effective, and will greatly extend the lifespan of the electronic components. |
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