is it safe to put 3 fans together?

[Pineabs]

i have 3 sanyo denki 120mm fans and they are all untailed. i plan to use them for my BIX III radiator. is it safe to put all these together and and put 1 3 pin connector and pulg it in my sunbeam controler? the 3 sanyo denkis at rated a little over 6 watts each. and my sunbeam has a maxium of 20 watts per channel. i don't know much about electronics and how all these work but i don't think its a problem jus wana double check with your guys. thanks

[apu318]

Hmmm.. it would be okay I suppose. What is the amperage? If you can put them on a different channel, youd be better off doing that.

[MVC]

You can put them on one channel. The Sunbeam is rated at 20w per channel, but I've seen reviews where it's been pushed to 24 safely. I wouldn't suggest doing that on a regular basis, but unless you plan on running them at full speed all the time (which is still 5% below the rated maximum), you'll be fine--and if you're going to run them at max, why the rheobus?

Edit: Apu318, amps equal watts divided by volts, so for the Sanyo Denki 109R1212H1011, which I assume he's using, it would be 6.24 watts divided by 12 volts equalling .52 amps.

[Pineabs]

they are the sanyo fans that everyone talks about. i bought a lot of these. they are DC 12V = 0.52A.

btw i got a mcp655 pump and it has a molex connector. how do i connect that to the sunbeam controller? jus change that out for a 3 pin connector? anyone have these pumps on a fan controller?

[Vulcan]

they are the sanyo fans that everyone talks about. i bought a lot of these. they are DC 12V = 0.52A.

btw i got a mcp655 pump and it has a molex connector. how do i connect that to the sunbeam controller? jus change that out for a 3 pin connector? anyone have these pumps on a fan controller?
You should have gotten some 3 pin to 4 pin molex conectors with the sunbeam.

[Pineabs]

You can put them on one channel. The Sunbeam is rated at 20w per channel, but I've seen reviews where it's been pushed to 24 safely. I wouldn't suggest doing that on a regular basis, but unless you plan on running them at full speed all the time (which is still 5% below the rated maximum), you'll be fine--and if you're going to run them at max, why the rheobus?

i mean i like it quiet. and i know that the sanyos under volts very nicely. and a BIX III is way over kill anyways i don't need to fans on full power.

[Pineabs]

should i use a fatter cable when i do this? the cables on the fans right now are 24AWG should i cut some 20AWG cables out from my busted power supply when putting all 3 of these fans together?

[MVC]

should i use a fatter cable when i do this? the cables on the fans right now are 24AWG should i cut some 20AWG cables out from my busted power supply when putting all 3 of these fans together?
I'd wire the fans into a regular 4-pin molex plug and then use heavier guage wire from that to the rheobus--you're going to have to extend the wires anyway, and that seems the cleanest.

The MCP655 has a speed control on the back so you can decrease the voltage there, assuming you've got a reason to not leave it at max--it's a quiet pump and should be fine running on the highest setting. After it's set there really isn't a reason to change it so there's no reason to hook it up to the rheobus.

[Pineabs]

my sunbeam has 3 pin fan controllers only. so putting them on a molex connector won't allow me to use them with the sunbeam. i think i'll jus use 20AWG wires. thanks for all the input guys.

[MVC]

OK, I didn't say that well enough so I'll try again. It will be near impossible to get 3 wires crimped onto the individual pins of a 3-pin plug, but it's very easy to crimp three wires onto a regular molex pin. So, unless you want to hardwire the whole thing, I think it would be easier to wire the fans together into a regular molex plug so that they're a "unit." Then, create an "extension cable" with larger guage wire that would go from the rheobus to the fan's regular molex. This way, you get the benefit of the larger guage wire where all three fans are drawing power but the fans, as a unit, can still be unplugged and removed. You could also do a variation on this where the "extension cable" end was split into three 3-pin fan sockets so that 3-pin plugs on the fans could be plugged in individually, but I don't know how much effort you want to put into this.

[Sshadow]

Or get hold of a Sunbeam Rheobus Rev.2, only a cableplint, no wires etc.. Just screw those wires in there.. :)
But i would be happy with a rev3 instead, so i didn't have to cut up all those wires. :(

//Christian

[pcgamer4life]

Or wire it to a molex, then just a 4-3pin wire?

[Pineabs]

OK, I didn't say that well enough so I'll try again. It will be near impossible to get 3 wires crimped onto the individual pins of a 3-pin plug, but it's very easy to crimp three wires onto a regular molex pin. So, unless you want to hardwire the whole thing, I think it would be easier to wire the fans together into a regular molex plug so that they're a "unit." Then, create an "extension cable" with larger guage wire that would go from the rheobus to the fan's regular molex. This way, you get the benefit of the larger guage wire where all three fans are drawing power but the fans, as a unit, can still be unplugged and removed. You could also do a variation on this where the "extension cable" end was split into three 3-pin fan sockets so that 3-pin plugs on the fans could be plugged in individually, but I don't know how much effort you want to put into this.

i'm not cramming them all in a 3 pin connector. i cut the wires of the fan controller and connected them to 1 20 AWG wire then connect that to a 3 pin connector.