Shroud or Bigger Fan???

MNC · Post by **MNC** » Wed Feb 05, 2014 11:04 pm

Hi All,

Wanted to ask the question, if you had the option between running a 6 blade 18" fan with no shroud or a four blade 12" fan with a shroud which would you choose?

Fakey · Post by **Fakey** » Thu Feb 06, 2014 12:33 am

Shrouded always, then the fan is forced to draw air thru the radiator, without a shroud it will pull air from around the rad, or whatever gives the least resistance, greatly reducing it's efficiency

tallsam66 · Post by **tallsam66** » Thu Feb 06, 2014 6:08 am

Shroud always .... you have to force the air to go through the radiator & this is what shroud does.

smurf182 · Post by **smurf182** » Thu Feb 06, 2014 6:52 am

12 inch is quite small for a main fan, what vehicle is this on?

I have a 16 inch Davies Craif fan with a flat shroud the cruiser, seems to do the job but has never been really tested on the beach or a long mountain ascent.

4WDbits · Post by **4WDbits** » Thu Feb 06, 2014 7:28 am

Why the big difference in size with or without a shroud?

Also, with fans, size isn't everything. Some shift a lot more air than others.

wopass · Post by **wopass** » Thu Feb 06, 2014 4:41 pm

remember bro, i have a VN commy V6 lekky fan and shroud on my monster and its fine.

got the modded HD 4 core 40 series radiator which kept the 383 cool as still sitting here if you wanna buy it :wink:

niblik · Post by **niblik** » Thu Feb 06, 2014 9:21 pm

wopass wrote:remember bro, i have a VN commy V6 lekky fan and shroud on my monster and its fine.

got the modded HD 4 core 40 series radiator which kept the 383 cool as still sitting here if you wanna buy it

I'm with this guy and in the same boat. Well, except mines a high power, massive performance, earth tearing, torque generating, planet rotational axis altering 3b turb'd....

Shrouded commy fan bud. Do it.

Crash bandicoot · Post by **Crash bandicoot** » Thu Feb 06, 2014 9:30 pm

4WDbits wrote:Why the big difference in size with or without a shroud?

Also, with fans, size isn't everything. Some shift a lot more air than others.

yup depends on the pitch of the blades and there sweep....bit like the study of building aircraft/ship propellers

MNC · Post by **MNC** » Thu Feb 06, 2014 10:42 pm

niblik wrote:
wopass wrote:remember bro, i have a VN commy V6 lekky fan and shroud on my monster and its fine.

got the modded HD 4 core 40 series radiator which kept the 383 cool as still sitting here if you wanna buy it

I'm with this guy and in the same boat. Well, except mines a high power, massive performance, earth tearing, torque generating, planet rotational axis altering 3b turb'd....

Shrouded commy fan bud. Do it.

You guys crack me up

Yeah I knew everyone was going to say shroud but my new fan doesn't fit the factory shroud... and I'm being lazy... oh well, shroud it is :!:

MNC · Post by **MNC** » Thu Feb 06, 2014 10:46 pm

4WDbits wrote:Why the big difference in size with or without a shroud?

Also, with fans, size isn't everything. Some shift a lot more air than others.

The new bigger fan has more blades, more surface area, and is more aggressive as well. Will shift a lot more air than the old one. Was tempted to fit the new fan without a shroud but the guru's have spoken!!! :wink:

I also have a commy electric fan in the spare parts pile so this may end up in there instead!

Shroud or Bigger Fan???

12" 4 blade fan with shroud or 18" 6 blade fan without?

Shroud or Bigger Fan???

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