FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
Back to site

Dyno Fan Recommendations
Goto page 1, 2  Next
 
Post new topic   Reply to topic    EFI University Forum Index -> Dynamometers
View previous topic :: View next topic  
Author Message
xenocron



Joined: 06 Dec 2003
Posts: 193
Location: Jersey

PostPosted: Mon Jul 09, 2007 2:53 pm    Post subject: Dyno Fan Recommendations Reply with quote

Looking for some economical yet effective fan setups...a few I have seen with a quick search...

http://www.uline.com/ProductDetail.asp?model=H-1420&ref=3875

http://www.uline.com/ProductDetail.asp?model=H-1577&ref=3875

http://www.bigfogg.com/schaefer-mobile-box-fan.html

http://cgi.ebay.com/Ebac-PF400-Axial-Fan_W0QQitemZ4400067726QQcmdZViewItem

If anyone has any links/recommendations on what they went with, that would be appreciated...
_________________
EFI University East Coast Instructor
www.xenocron.com
845-504-5340
Specializing in Honda/Acura Applications
Back to top
View user's profile Send private message Send e-mail Visit poster's website AIM Address Yahoo Messenger
s15dxb



Joined: 13 Dec 2005
Posts: 94
Location: Dubai

PostPosted: Tue Jul 10, 2007 1:57 am    Post subject: Reply with quote

The 3000cfm fan would be good for exhaust extraction.
For cooling look cfm 14,000+ .
Back to top
View user's profile Send private message Send e-mail
xenocron



Joined: 06 Dec 2003
Posts: 193
Location: Jersey

PostPosted: Tue Jul 10, 2007 9:45 am    Post subject: Reply with quote

The first and second fan from ULINE are 18,200 and 22,700 and for less than $600 I figured that was pretty good as the fan that is sold by the dyno manufacturer is $1500.

Exhaust extraction shouldnt be too difficult...there is already an exhaust fan in the building I am in.

Reading some of the other post searching around here for cooling, I may get the 48" fan and one of these to point at the intercooler on boosted setups.

http://cgi.ebay.com/Ebac-Apollo-Air-Mover_W0QQitemZ4400067728QQihZ019QQcategoryZ20612QQcmdZViewItem
_________________
EFI University East Coast Instructor
www.xenocron.com
845-504-5340
Specializing in Honda/Acura Applications
Back to top
View user's profile Send private message Send e-mail Visit poster's website AIM Address Yahoo Messenger
sandiegotuner
Site Admin


Joined: 09 Jun 2005
Posts: 44
Location: San Diego, CA

PostPosted: Tue Jul 10, 2007 12:26 pm    Post subject: Couple of recommendations Reply with quote

If you are looking for the carpet drying type of fan. This one is hard to beat. 4,100 CFM and $216 US. I really like these for intercoolers, etc.
http://www.parish-supply.com/carpet_dryer.htm

If you want something big. These are also very nice:
http://www.pattersonfan.com/
Joel Kock is a great guy and has 30" and 36" options for around $1,000.
_________________
-Derrick
Back to top
View user's profile Send private message Send e-mail
Warpspeed



Joined: 05 Jun 2006
Posts: 549
Location: Melbourne

PostPosted: Tue Jul 10, 2007 4:42 pm    Post subject: Reply with quote

Buying new is going to be expensive for anything large enough to do the job.

If you are looking for something for free, or at minimal cost, start thinking about old cooling tower fans. Quite often commercial buildings that are being demolished have cooling towers up on the roof that are old and rusted out, and not worth salvaging. But there may be a perfectly good fan and motor attached to it. These things can be absolutely HUGE.

A case or two of beer to the demolition site foreman will probably get you your fan. Weld up a steel frame and a safety guard, and you are in business.
Back to top
View user's profile Send private message
Gerry Gaffney



Joined: 30 May 2006
Posts: 52

PostPosted: Wed Jul 11, 2007 1:10 am    Post subject: Reply with quote

Hi Guys,

Just my two cents worth, I've written a small brochure on the different types of fans available, the important things for a dyno fan are; the flow rate at static & dynamic pressure.

One quick & easy way to judge a fan is the motor size, if it's 1hp, it's going to do nothing, the fan I've detailed below is 20hp (in context of course, you can have a 20hp motor, but if it's only doing 1hp of work, it's still no use, a quick current draw test would reveal this, @ 415V it will draw about 30A at normal running speed)




Below is the air speed at 1M (note it's in kmh)



Here is a Recent install where we modified the fan to fit in with the limited space our customer had, we designed & spec'd the complete cell, hopefully you'll like it.

In operation Dyno vid (wait 12 secs for full speed)

I'm away for a few days, so won't answer immediately (nor will I give any specs on the fan, before anyone asks Very Happy )

Cheers,

Gerry
Dastek UK
Back to top
View user's profile Send private message Send e-mail
wickedmr2



Joined: 12 Apr 2007
Posts: 48
Location: Bensalem, PA

PostPosted: Wed Jul 11, 2007 5:00 am    Post subject: Reply with quote

Gerry Gaffney wrote:
...(nor will I give any specs on the fan, before anyone asks Very Happy )
Dastek UK



What are the specs, and the pricing for that type of fan Question
Back to top
View user's profile Send private message
xenocron



Joined: 06 Dec 2003
Posts: 193
Location: Jersey

PostPosted: Mon Jul 16, 2007 8:04 pm    Post subject: Reply with quote

Gerry Gaffney wrote:

In operation Dyno vid (wait 12 secs for full speed)


Holy $hit!
_________________
EFI University East Coast Instructor
www.xenocron.com
845-504-5340
Specializing in Honda/Acura Applications
Back to top
View user's profile Send private message Send e-mail Visit poster's website AIM Address Yahoo Messenger
Squatchy



Joined: 06 Mar 2005
Posts: 171
Location: SC

PostPosted: Mon Jul 16, 2007 8:38 pm    Post subject: Reply with quote

Thats some nice flow Shocked , whats the pricing on those fans?
Back to top
View user's profile Send private message
Gerry Gaffney



Joined: 30 May 2006
Posts: 52

PostPosted: Tue Jul 17, 2007 11:39 am    Post subject: Reply with quote

Hi Guys,

The price is ?3000 + VAT here in the UK, which I estimate is around $6000 US. We sold quite a few in the UK & Europe, but never further afield due to shipping, but could be a possability.

It is 20HP (15KW) complete with star delta starter, I know some will ask about flow rates & pressures, & whilst not rocket science, the data was hard earned (read lots of mistakes to perfect Smile) so I hope you understand, I'm not about to give this info away.

Hope that helps.

Cheers,

Gerry
Dastek
Back to top
View user's profile Send private message Send e-mail
El Verdugo



Joined: 15 Feb 2005
Posts: 525
Location: New Orleans

PostPosted: Tue Jul 17, 2007 11:52 am    Post subject: Reply with quote

Man this fan looks wicked and very efficient as well.

What is the damage for a unit like this?
Ouch just saw the read the price for this bad boy... Shocked
_________________
Alberto I Correa, Jr.
EFI 101 Graduate 7-16-05
AEM EMS factory trained
www.corrperformance.com
Back to top
View user's profile Send private message Visit poster's website AIM Address Yahoo Messenger MSN Messenger
Warpspeed



Joined: 05 Jun 2006
Posts: 549
Location: Melbourne

PostPosted: Thu Jul 19, 2007 5:23 pm    Post subject: Reply with quote

I will try and be a little more helpful. Here is a dyno blower fan I built myself for almost nothing:



It has a measured airflow of around 8,000 CFM and uses a 3Hp motor. The airspeed coming out of it was just over 100Kmh (60Mph) as measured with the anemometer sitting on top of the blower. Unfortunately the top of the airspeed indicator is just out of the top of the picture.

Anyhow, it uses a double entry centrifugal blower wheel fifteen inches diameter, and fifteen inches wide, running at only 670 RPM. These types of blowers are used in the airconditioning industry and should be readily available either new or cheaply from secondhand machinery graveyards.

Just measure the motor amps, and select a pulley drive ratio to fully load the motor. Blower size is not really that critical.

For any given sized rotor, airflow rises roughly proportional to blower RPM. Developed pressure goes up at a rate of RPM squared. Drive horsepower goes up roughly at a rate of RPM cubed.

So a few more RPM can drastically increase the airflow and drive horsepower.

For instance, this blower wheel requires 3Hp at 670Rpm. If I speeded it up to 940 RPM, that would be a speed increase of x 1.4

Estimated drive Hp would rise to something like 3Hp x 1.4 x1.4 x 1.4 = 8.2Hp

So blower speed and pulley ratio can make a huge difference.

Exact details are 50Hz two pole three phase motor running at 2850 Rpm with 4.25" pulley driving an 18" pulley. I am mainly interested in smaller engines, but if I ever needed more air, a much more powerful motor could be fitted easily enough. Just keep the belt speed high to avoid slippage.

I found this blower on the tip, and the motor was free too. I just welded up a frame in the form of a giant hinge. The blower casing, and the handles with motor, pivot on the solid axle bar. Belt tension is easily adjusted over a wide range with the two large top mounted turnbuckles. Not shown in the picture, but a pair of bicycle rubber handlebar grips finish it off rather nicely.

Something like this can be fabricated in a single afternoon.

When running, it tries to take off across the workshop floor like an air boat. It will definitely need a brake on the wheels, or chocks. It develops an amazing amount of thrust !!

Very easy to make yourself something really potent, limited only by the available electrical power. It is NOT rocket science, hehehehe.
Back to top
View user's profile Send private message
El Verdugo



Joined: 15 Feb 2005
Posts: 525
Location: New Orleans

PostPosted: Thu Jul 19, 2007 6:55 pm    Post subject: Reply with quote

Warpspeed, that is pimp! Thanks for the illustration and bringing this DIY fan to light. My hat off you mate!
_________________
Alberto I Correa, Jr.
EFI 101 Graduate 7-16-05
AEM EMS factory trained
www.corrperformance.com
Back to top
View user's profile Send private message Visit poster's website AIM Address Yahoo Messenger MSN Messenger
Warpspeed



Joined: 05 Jun 2006
Posts: 549
Location: Melbourne

PostPosted: Thu Jul 19, 2007 9:27 pm    Post subject: Reply with quote

I just went out and took another picture to show how simple the frame construction is:

And I bet suitable bare blowers and motors are available on e-bay for very reasonable prices, but I have never looked for them.
Back to top
View user's profile Send private message
BANZAI
Site Admin


Joined: 20 Nov 2003
Posts: 183

PostPosted: Fri Jul 20, 2007 4:23 am    Post subject: Reply with quote

Was there a picture attached? I was hoping to see!
Back to top
View user's profile Send private message Send e-mail
Warpspeed



Joined: 05 Jun 2006
Posts: 549
Location: Melbourne

PostPosted: Fri Jul 20, 2007 3:49 pm    Post subject: Reply with quote

Well the pictures are there, I cannot understand why you cannot see them ???
If there is a technical problem try here:

http://i144.photobucket.com/albums/r166/Warpspeed_photos/00015.jpg

http://i144.photobucket.com/albums/r166/Warpspeed_photos/00001.jpg
Back to top
View user's profile Send private message
BANZAI
Site Admin


Joined: 20 Nov 2003
Posts: 183

PostPosted: Fri Jul 20, 2007 7:41 pm    Post subject: Reply with quote

Now I see them, maybe something with my connection from work, it happens sometimes. Nice!
Back to top
View user's profile Send private message Send e-mail
xenocron



Joined: 06 Dec 2003
Posts: 193
Location: Jersey

PostPosted: Fri Jul 27, 2007 11:30 am    Post subject: Reply with quote

Very nice WARP...always enjoy looking at others DIY work Smile
_________________
EFI University East Coast Instructor
www.xenocron.com
845-504-5340
Specializing in Honda/Acura Applications
Back to top
View user's profile Send private message Send e-mail Visit poster's website AIM Address Yahoo Messenger
FoundSoul



Joined: 05 Jun 2006
Posts: 62
Location: Duluth, GA

PostPosted: Sat Jul 28, 2007 8:22 am    Post subject: Reply with quote

You can get about as insane with this as you want to-- here's a site with blowers up to something like 52,000 CFM!

http://www.cincinnatifan.com/centrifugal-fans-blowers.htm

Too bad the blowers that look nearly like turbo compressor housings only make 4000 or so CFM...


_________________
Jerry a.k.a. 'FoundSoul'
http://www.diyautotune.com
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Warpspeed



Joined: 05 Jun 2006
Posts: 549
Location: Melbourne

PostPosted: Sun Jul 29, 2007 6:09 pm    Post subject: Reply with quote

Yeah, some of the big air handlers in large public buildings, you could park a minivan inside.

Blowers to ventilate deep underground mines can be as big as a whole house.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    EFI University Forum Index -> Dynamometers All times are GMT - 7 Hours
Goto page 1, 2  Next
Page 1 of 2

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group

©2007 EFI University
Website designed and maintained by 3LizardsMedia.com