spal fans radiator cooling - Honda RC51 Forum : RC51 Motorcycle Forums
 1Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 41 (permalink) Old 05-05-2014, 10:40 PM Thread Starter
Senior Member
 
jondog9's Avatar
 
Join Date: Aug 2010
Location: Northern CA
Posts: 8,653
Mentioned: 15 Post(s)
Quoted: 317 Post(s)
spal fans radiator cooling

Ok, the title is a little nutty, I tried to make it search friendly.
With summer coming up, we always get talking about keeping our RC51's a little cooler and the topic of aftermarket SPAL fans always comes up.
BMiller - not to be confused with b.miller123 - put up a thread about his conversion here in our forum -
https://www.rc51forums.com/forums/showthread.php?t=7997

And on Speedzilla -
http://www.speedzilla.com/forums/hon...installed.html

Lot's of good information.

About doing this conversion to a SP1: I'm thinking we should use a larger fan on the left radiator - but make sure it's pushing some decent CFM's and it's within an amperage draw that's compatible. I doubt there's enough room for a fan on the right radiator, unless the oil cooler is repositioned.
This is speculation, I've thought about it, I mocked up a fan on the right radiator and that's when I discovered it simply won't fit without modification.
If anyone here has mounted spal fan(s) to a SP1, please chime in.

John, 2000 RC51 #000100

jondog9 is offline  
Sponsored Links
Advertisement
 
post #2 of 41 (permalink) Old 05-05-2014, 10:53 PM
Senior Member
 
Join Date: Jan 2014
Location: Dallas, Tx
Posts: 469
Mentioned: 0 Post(s)
Quoted: 14 Post(s)
ive thought about a spal fan on my sp1 but in 90 degree weather the fan kicks on at 221 every time and takes it down to 209. i just dont really see the need. however itll soon be 100+ degrees here, but id think regard less the fan will always kick on at 221, and theoretically it should never get higher than that???

if anything i'm thinking a manual switch is something i want to do, but i thought i remember that wasnt an option with the sp1?
thaddeus is offline  
post #3 of 41 (permalink) Old 05-05-2014, 11:09 PM
Lifetime Premium
 
gts455's Avatar
 
Join Date: Oct 2009
Location: Deutschland/Colorado Springs
Posts: 3,169
Mentioned: 4 Post(s)
Quoted: 37 Post(s)
Manual switch is possible, it's an easy job. i had it done on mine.

2001 Honda RC51 SP1
1996 Honda CBR 900RR
2003 Aprilia RSV Mille R
1999 Aprilia RS50
2012 Triumph Daytona 675R (Sold)
2010 BMW S1000RR (Sold)
2005 Yamaha R6 (Sold)
gts455 is offline  
 
post #4 of 41 (permalink) Old 05-05-2014, 11:34 PM Thread Starter
Senior Member
 
jondog9's Avatar
 
Join Date: Aug 2010
Location: Northern CA
Posts: 8,653
Mentioned: 15 Post(s)
Quoted: 317 Post(s)
Manual switch is a snap for the SP1's. Just splice in a wire to the single wire that runs to the thermo/switch on the left radiator. Run the other end to one of the spades on the switch. Take a second wire and ground it to the frame. Run the other end to the second spade of the switch.
Done!
Your fan will still automatically kick on when you don't want to be bothered manually switching.

John, 2000 RC51 #000100

jondog9 is offline  
post #5 of 41 (permalink) Old 05-06-2014, 12:00 PM
Senior Member
 
Join Date: Jan 2014
Location: Dallas, Tx
Posts: 469
Mentioned: 0 Post(s)
Quoted: 14 Post(s)
jon, do you have a pic of what kind of switch youre using and how you have it mounted?
thaddeus is offline  
post #6 of 41 (permalink) Old 05-06-2014, 12:16 PM Thread Starter
Senior Member
 
jondog9's Avatar
 
Join Date: Aug 2010
Location: Northern CA
Posts: 8,653
Mentioned: 15 Post(s)
Quoted: 317 Post(s)
I'm not using a switch.
You can mount the switch anywhere you like.
As far as what type of switch, any two position switch, that is rated for over 12 volts and at least a 10 amp rating.
A few here have posted how to install it, and it's so simple it makes perfect sense.
The only thing the switch is doing is providing a complete circuit, via a ground, to the fan motor, since the switch is in front of the OEM's thermo/switch. That's why it doesn't negate the automatic feature of the thermoswitch to also kick the fan on.

All this is for SP1 only.
SP2's require a little different wiring, but still very easy.

John, 2000 RC51 #000100

jondog9 is offline  
post #7 of 41 (permalink) Old 05-06-2014, 01:25 PM
Senior Member
 
extrapolator's Avatar
 
Join Date: Apr 2013
Location: FL
Posts: 2,455
Mentioned: 11 Post(s)
Quoted: 99 Post(s)
I think the manual switch needs to be beside ... aka parallel to ... the OEM thermo/switch.

If the manual switch was placed either before or after the OEM thermo/switch, your bike could get hot and try to turn on the fan, but the fan can't turn on whenever you have the manual switch off.

On the other hand, if the manual switch is beside the OEM thermo/switch, then either switch being on would cause the fan to run.

Last edited by extrapolator; 05-06-2014 at 09:38 PM.
extrapolator is offline  
post #8 of 41 (permalink) Old 05-06-2014, 01:50 PM
Senior Member
 
Join Date: Jan 2013
Location: West Greenwich R.I
Posts: 140
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Just did mine (SP2). I bought the fans without the oem connector, when I spiced my connectors on I added the wire for switch.
Click image for larger version

Name:	image.jpg
Views:	276
Size:	97.3 KB
ID:	58553
RC51 RIDER likes this.
grape ape is offline  
post #9 of 41 (permalink) Old 05-06-2014, 04:00 PM
Senior Member
 
Join Date: Jan 2014
Location: Dallas, Tx
Posts: 469
Mentioned: 0 Post(s)
Quoted: 14 Post(s)
ok am i missing something? spliced a wire into the single sensor wire that scews into the rad, grounded a wire to the frame and connected it to the ground spade on the switch. this is a 12vdc 30amp switch and i know its getting power and ground because there is a light on the switch that lights up red when you flip it on, yet my fan wont come on manually when i turn the ignition on. that third spade on the switch says accessory.






Last edited by thaddeus; 05-06-2014 at 07:53 PM.
thaddeus is offline  
post #10 of 41 (permalink) Old 05-06-2014, 08:44 PM
Senior Member
 
Join Date: Jan 2014
Location: Dallas, Tx
Posts: 469
Mentioned: 0 Post(s)
Quoted: 14 Post(s)
anyone? i need to figure this out quick so i can get my bodywork back on.
thaddeus is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Honda RC51 Forum : RC51 Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome