small cooling fans

chodjinn · Post by **chodjinn** » Tue Oct 09, 2007 6:25 pm

I'm after a set of twin cooling fans to fit in a 17.5" by 10" space. Been down the scrappy and nothing was suitable, anyone know of anything that might fit?

cheers

Ian Anderson · Post by **Ian Anderson** » Tue Oct 09, 2007 6:56 pm

To fit that you would need 2 x 8 inch fans (Perhaps you could get away with 2 x 9 inch one staggered high and one low across the diagonal)

Try NF Auto
http://www.carbuildersolutions.co.uk/index.html

Or Rally design
http://www.rallydesign.co.uk/catalog/ad ... an&x=0&y=0

Go for as large a fan as possible and if possible check the Cubic feet per minute numbers - some are a lot better at moving air than others. (A single 16 inch fan will move about 3- 4 times the air as a single 8 inch)

Then also remember to decide if you need it to push - mounted in front of radiator or pull mounted behind the radiator. (Blade design differs) and as a last thaught make sure it moves the air from front to back of the car! (A GT40 had a terrible time as his fans were wired and pushed the air out the grill - stationery and the car was fine - run it at 20 mph and the fan and normal flow of air cancelled out and he cooked his engine)

Ian

stevieturbo · Post by **stevieturbo** » Tue Oct 09, 2007 7:18 pm

Pullers are more efficient.

Ducting the entire core makes a good difference.

I think the smallest normal type fan, is circa 9"

Check ebay.....lots of pullers from motorbikes, at surprisingly nice prices...just bought 2 myself. ( one will be used, but unsure which will fit best )
No idea how much they flow though. They come in small diams too.

chodjinn · Post by **chodjinn** » Tue Oct 09, 2007 8:24 pm

the problem is I have an MGB so I cant have a pull fan due to space limitations. I already have a beast of a Kenlowe, but I've made a fancy venturi-type ducting shroud out of aluminium which covers the core exposed above the lower front slam panel (upper one has been removed).

I can fit the fan, but at an angle which isn't ideal. Therefore looking at two small fans.

These would be good, but doesn't give an flow rating.

http://www.rallydesign.co.uk/catalog/pr ... ts_id=3427

Ian Anderson · Post by **Ian Anderson** » Tue Oct 09, 2007 8:25 pm

Double posted - deleted

Ian

stevieturbo · Post by **stevieturbo** » Tue Oct 09, 2007 8:47 pm

Go Spal....some of the best.

Check ebay, most give flow ratings there.

The US gets a better range tho
http://spalusa.com/

mgbv8 · Post by **mgbv8** » Thu Oct 11, 2007 8:13 pm

Do you not have the room to fit a pair of MGBV8 fans?
I had my standard V8 rad recored at Serck with slightly larger cores and its fine. Mind you, that was with the Nitrous 3500. I'm not sure how they will behave with the new 4.6 but I'll find out this weekend at the Pod.

chodjinn · Post by **chodjinn** » Fri Oct 12, 2007 8:30 am

Perry any chacne you can wing me a pic or two of the MGBV8 fans?! I never even knew they had twin fans, all the ones I have seen have a single large fan, which leads me to believe the twins aren't that good lol!

Worth a punt though cheers mate :p)

mgbv8 · Post by **mgbv8** » Fri Oct 12, 2007 5:36 pm

Will bung some pics on later mate.

mgbv8 · Post by **mgbv8** » Fri Oct 12, 2007 7:58 pm

http://www.britishv8.org/MG/JakeVoelckers.htm

This shows a pair of standard BV8 fans. They tuck in front of the rad quite nicely. And they work ok without a shroud. They have tidy brackets that bolt into the front closure panel.

Ian Anderson · Post by **Ian Anderson** » Fri Oct 12, 2007 7:59 pm

Stevie

Do you have the diameter of tese bike fans?

I need something to pump fresh air into the cab at traffic crawl and perhaps one of them may do the trick well

Also if yoou have connected them up how noisy are they?

cheers
Ian

stevieturbo · Post by **stevieturbo** » Fri Oct 12, 2007 8:02 pm

The 2 I queried were in and around 6-7"

Havent a clue about noise etc or airflow, as I havent received them yet.

I have only just purchased them off ebay, but they are defo cheap !

HairbearTE · Post by **HairbearTE** » Fri Oct 12, 2007 9:41 pm

Some peugeots come with a dual fan assembley from the factory. Not sure if they go as small as 17" though with the cowling taken into account.

chodjinn · Post by **chodjinn** » Sat Oct 13, 2007 3:27 pm

yeah i have a pug 306 and thought i could rob the fans off that, but they're about 5 inches to long!

might go with the MGBV8 fans if i can get hold of some