Curved Blade Fan Direction?

[SSSLINE]

Hi,

New fan came without instructions, it has curved blades question is should it work with the cup of the curve leading or with the outer edge of the curve (if that makes sense) moves air in either orientation but I am guessing one is more efficient?

 

Looking at the Kenlow website the 'gif' seems to show inside of the curve leading (i.e cupped)??

 

http://www.kenlowe.co.uk/

 

Cheers

Tony.R

[speedtripledan]

Spin it up off a battery to find out , just bought a kenlowe it is 50 times better quality than anything else I've had

[sj-bradley]

Depends on which side of the radiator you fit it I think.

 

Which ever way the air moves when you attach it to a battery.

 

Question: which way do the hands of a clock move?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If you answered "clockwise", then - no - not if you are the clock ...

 

Simon.

[SSSLINE]

Hi,

Get what your saying but it 'can' be wired to spin either way and the blade 'could' be removed and put on either way around so all options are possible, it can both push and suck with the leading edge of the curve or with the cupped edge of the curve being foremost during rotation, depending on which way its wired and which way round the blade is fitted just wondered if one was more efficient then tother?

 

Cheers

Tony.R

 

ps looking at a push option for my application, infront of rad.

[sj-bradley]

Can you not send Kenlowe a quick email ?

 

They would be the best to know as they designed it and you wouldn't want us lot saying "look at Tony, he's got the fan on backwards!"

 

Simon.

[speedtripledan]

big sticker on my fan telling me how to fit it. will look tomorrow and post

[Andi]

Very very careful with fans.

Someone very experienced with motors I know from Locost builders nearly lost a few fingers earlier this year. Terrible mess.

 

Andi

[speedtripledan]

kenlowe has grill both sides

[Guest peter2b2002]

think of a screw thread as that is what a fan blade is or a propeller does

peter2b

[richardm6994]

To be honest, since posting I have read conflicting info.

 

I think my original post was wrong and the blade should spin with the tips leading...doesn't seem right to me tho

[SSSLINE]

 

Think this is right?

[richardm6994]

Every video I have watch on YouTube shows the fan blade spinning "tips first"

[speedtripledan]

this is how my kenlowe works and by god its good!!

[fry61]

Think "tip first" is to help reduce tip loss --- the air as its picked up by the blade is deflected towards to centre of the fan. If fan is ducted though don't think it makes much difference, lots of fans have a strip of material around circumference for strength/finger protection & to reduce air falling off the tip of the blade.