| Author | Topic |
|---|
Location:
Brisbane
Registered:
October 2004
|
|
Good thermo fans
|
Tue, 13 September 2005 04:21
|
 |
|
hey guys, just been looking around for a decent (pair of) thermo fan(s) i found the davies craig 14" flows roughly 1060cfm, the 9" flows roughly 635cfm (was gonna use two of them), but the guy i spoke to said i'd need heaps more flow... he recommended a brand from the states... SPAL, but their flow rates are much the same... can anyone offer quantative opinions on this matter?? for my 1G conversion
|
|
|
Registered:
June 2004
|
|
Re: Good thermo fans
|
Tue, 13 September 2005 05:58
|
|
|
what car do you have and what sort of radiator. i have a twin core out of a corona and two 10" davies craig fans, haven't had a problem yet in my ra65 with 1ggte.
|
|
|
Membership Secretary
Location:
Sydney
Registered:
June 2002
|
|
Re: Good thermo fans
|
Tue, 13 September 2005 06:39
|
|
I used to run a 13" fan on my 3 core 7M in the wagon was repco brand.
only complaint it was a noisey fan. Realy quite loud for wqhat it was
|
|
|
I supported Toymods
Location:
Australia
Registered:
November 2003
|
|
Re: Good thermo fans
|
Tue, 13 September 2005 07:35
|
|
The fan is only there to keep the motor cool at idle.
A single 14" will be more than enough for a 1GGTE, providing your radiator is working tiptop, and isn't undersized.
|
|
|
Location:
Hobart, Tas
Registered:
May 2002
|
|
Re: Good thermo fans
|
Tue, 13 September 2005 07:51
|
|
|
Given a very decent radiator (say, triple-core), would a smaller fan be fine?
|
|
|
I supported Toymods
Location:
Australia
Registered:
November 2003
|
|
Re: Good thermo fans
|
Tue, 13 September 2005 07:58
|
|
|
Yes, but you'll still need to set up some sort of shroud to make sure as much of the radiator is being cooled.
|
|
|
Location:
Brisbane
Registered:
February 2003
|
|
Re: Good thermo fans
|
Tue, 13 September 2005 08:38
|
|
| CrUZsida wrote on Tue, 13 September 2005 17:35 |
The fan is only there to keep the motor cool at idle.
|
Not sure if that is entirely true. I was at a motokhana on Sunday and am thinking about upgrading my thermo to help keep the car cool during the run (1st gear, low speed lots of rev's).
|
|
|
I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
|
|
Re: Good thermo fans
|
Tue, 13 September 2005 08:42
|
|
|
I have a pair of ST205 thermo fans available. They suck lots and lots of air.
|
|
|
I supported Toymods
Location:
Australia
Registered:
November 2003
|
|
Re: Good thermo fans
|
Tue, 13 September 2005 08:45
|
|
Thermofans don't really do much above 30kph.
And for the time spent between 0 and 30kph, where you are not idling, or close to idle, its almost worth forgetting about.
|
|
|
Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
|
|
Re: Good thermo fans
|
Tue, 13 September 2005 09:10
|
|
a good sealed shroud will do wonders, as will stoping air leaking around the radiator at speed.
i reckon go for the biggest that fits.. that way when it's on it moves large amount of air, and when it is off, it blocks the exit of the shroud less.
of course you could use rubber flaps to allow extra air out of the shroud when at speed, as some euro manufacturers do.
Cya, Stewart
|
|
|
Location:
Rocklea qld
Registered:
February 2003
|
|
Re: Good thermo fans
|
Tue, 13 September 2005 10:12
|
|
|
the best brand out at the moment is spal. they suck just as much as a good engine fan but are as dear as poisen
|
|
|
Location:
Brisbane
Registered:
October 2004
|
|
Re: Good thermo fans
|
Wed, 14 September 2005 08:21
|
|
i've got a brandnew triple core RA28 radiator, see signature for details on the car, should have all ya wanna know
| Posted by CrUZida |
Thermofans don't really do much above 30kph
|
hehe.. so all i gotta do is avoid traffic on the way to and from uni... in the city, and i'll be alright...
Cool1 - what dimensions are they? know what the flow rate is? and emmachissit?
anyone got quantative details (other then the 30kph rule)? flow rates and sizes would be good 
cheers
|
|
|
Location:
brisvegas
Registered:
August 2004
|
|
Re: Good thermo fans
|
Wed, 14 September 2005 12:56
|
|
|
i have heard EL falcon thermo's to be very good at pushing lots of air..
|
|
|
I supported Toymods
Location:
Australia
Registered:
November 2003
|
|
Re: Good thermo fans
|
Thu, 15 September 2005 00:46
|
|
EL is almost the same as AU, but I believe AU's are a bit better.
Either way, I'd say its way to large for HickOZ
|
|
|
Location:
Brisbane
Registered:
October 2004
|
|
Re: Good thermo fans
|
Thu, 15 September 2005 04:30
|
|
lol... i bet those EL ones are good a moving air... only gotta listen to them, all fan noise.
as for size, the radiator size is 530x380 (21"x15")
i'm thinking maybe just two 9" davies craig fans... they can't be THAT bad... i gotta get something happening pretty soon too.
|
|
|
I supported Toymods
Location:
Australia
Registered:
November 2003
|
|
Re: Good thermo fans
|
Thu, 15 September 2005 04:36
|
|
|
Do you have enough room to use suckthrough? or are you going to have to use blowthrough?
|
|
|
Location:
Brisbane
Registered:
October 2004
|
|
Re: Good thermo fans
|
Thu, 15 September 2005 04:51
|
|
|
nup... gonna have to be an up stream install (pusher type) wanna mount it between the 'cooler, and the radiator
|
|
|
Location:
Brisbane
Registered:
October 2004
|
|
Re: Good thermo fans
|
Fri, 16 September 2005 07:07
|
|
|
well i went with a pair of 9" davies craig fans, got them mounted all nicely, and then tested them with the battery charger, wasn't overly impressed though, i'm thinking that the charger just wasn't putting out the amperage i wanted... showed over 6amps on the guage (ie, off the scale). when i tried on an old battery wasn't much better... again hoping this is just 'cause the battery is kinda dead... on the bright side, there wasn't much fan noise!
|
|
|
Location:
Brisbane
Registered:
February 2003
|
|
Re: Good thermo fans
|
Fri, 16 September 2005 12:09
|
|
fans pull a lot of current - more than most cheap chargers
from memory, i have 20A fuse on my 14" davies craig fan and it suggested that it would pull 14A on startup
run the fans off a fully charged pattery and you'll see a difference.
|
|
|
Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
|
|
Re: Good thermo fans
|
Fri, 16 September 2005 12:19
|
|
| hickoz_bro wrote on Fri, 16 September 2005 17:07 |
well i went with a pair of 9" davies craig fans, got them mounted all nicely, and then tested them with the battery charger, wasn't overly impressed though, i'm thinking that the charger just wasn't putting out the amperage i wanted... showed over 6amps on the guage (ie, off the scale). when i tried on an old battery wasn't much better... again hoping this is just 'cause the battery is kinda dead... on the bright side, there wasn't much fan noise!
|
from memory (it is on their site tho) the 9" still pull 10 amps each when running??
|
|
|
I supported Toymods
Location:
Australia
Registered:
November 2003
|
|
Re: Good thermo fans
|
Fri, 16 September 2005 14:33
|
|
AU thermo's pull 15A EACH constant.
Starting current would peak at well over 50A each for a few milliseconds.
|
|
|
