ninja12
Needs a job
Posts: 3310
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posted May 06, 2003 12:49 PM
lower temp fan switch
The busa boys are working on a replacement sensor that will turn the fan on sooner. Anyone tried anything like this for the 12?
I don't like the manual switch, because it stays on when you leave the bike.
http://www.labusas.org/phpBB2/viewtopic.php?t=16319
  
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zxlnt
Needs a job
Kawpuke Extraordinare
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posted May 06, 2003 01:01 PM
Just wire a relay in line with switched 12V power source to turn off when the ignition is off. No big deal..
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Zhooligan
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posted May 06, 2003 01:01 PM
Swft wired mine so that it works with the thermostat and or comes on manually. Works pretty well.
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TurboBlew
Moderator
BUSY DOING THE SCHIAVO
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posted May 06, 2003 02:05 PM
You can purchase the thermostats that are adjustable for cars...but they tend to be pricey. ~$60-100.
A simple parallel switch will run $5..tops Why spend $60 on a $5 problem?
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Megabyte
Pro
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posted May 06, 2003 02:59 PM
 Edited By: Megabyte on 7 May 2003 15:14
Radiator Thermostat Switch
So, I soldered up a switch, coated it w/epoxy, and wrapped the wires. I then removed the left ram air cover. Mounted my $3.00 Fan switch on the second from the top windscreen screw hole, routed the wires behind and under the gauges, and tapped into the Thermostat switch @ the connector. Tied all the wires up neatly, buttoned her up, and there you go  Now I'm thinking about wiring a relay into my rear brake so the fan will come on when I brake. What do you think?
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Zhooligan
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posted May 07, 2003 03:39 PM
Way to technical!
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To those who do not count their life in years, but in how life
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Koz
Expert Class
Posts: 304
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posted May 08, 2003 04:39 AM
The thermostat and the temp. sensor are designed to control the operating temp. of the engine. I would not change the operating temp. The purpose of the manual switch is to be able to get a jump on the temp, so it doesn't get excessive when in traffic, by keeping the fan running continuous. What you need to do is what zxlnt said , get simple 12v relay, wire the coil of the relay to a 12v power source that turns off when the ignition is turned off. Then break the circuit for the toggle switch/temp. sensor, and run that circuit through the normally closed contacts of the relay. Also I used an illuminated toggle switch, so when the fan is on, it lights. It will remind you to turn it off, when moving.
Koz
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swft
Needs a life
Full throttle!
Posts: One MEEEEEELLION
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posted May 08, 2003 04:41 AM
Yah, I believe in K.I.S.S. when possible!
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ninja12
Needs a job
Posts: 3310
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posted May 08, 2003 11:20 AM
KISS would be a direct replacement that kicked in 10-20 degrees cooler.
I don't know what temp the fans come on now but in heavy traffic it is too late, which explains why the manual method is so good.
BUT IF it came on eailer there would be no need for a manual switch.
It would allow the bike to reach normal tempature + a few degree for operating range, then kick on. only run the fan when needed and nothing to remember to turn on/off.
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n da zone
Expert Class
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posted May 08, 2003 11:44 AM
Edited By: n da zone on 8 May 2003 12:49
quote:
, get simple 12v relay, wire the coil of the relay to a 12v power source that turns off when the ignition is turned off. Then break the circuit for the toggle switch/temp. sensor, and run that circuit through the normally closed contacts of the relay. Also I used an illuminated toggle switch, so when the fan is on, it lights. It will remind you to turn it off, when moving.
That's a great idea. I live in Florida and it's already in the 90's at mid-afternoon. I wanna do this, but can you help a non-electrician out?
1)Any favorite wire/circuit for tapping into a switched power source?
2) Where do you mount your relay?
3) How do you wire it so the fan will cycle normally (if'n you forget to turn it on), as well as making it come on when you say 'on'.
4) Where did you mount your toggle switch to keep it out of the way yet accessable?
5. Can you rough out a sketch for those that have NO imagination. I can follow directions but sometimes a drawing really helps.
Thanks!!!
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Megabyte
Pro
Posts: 1047
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posted May 08, 2003 12:50 PM
I couldn't agree more...Maybe even a variable thermostat for different temperature zones.
quote:
KISS would be a direct replacement that kicked in 10-20 degrees cooler.
I don't know what temp the fans come on now but in heavy traffic it is too late, which explains why the manual method is so good.
BUT IF it came on eailer there would be no need for a manual switch.
It would allow the bike to reach normal tempature + a few degree for operating range, then kick on. only run the fan when needed and nothing to remember to turn on/off.
____________
We First make our habits and then our habits make us.
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kcadby
Pro
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posted May 08, 2003 01:30 PM
Edited By: kcadby on 8 May 2003 14:31
John and have BOTH killed the battery a FEW TIMES (roll-eyes) leaving the manual switch on 
It's easy to do at the race track... because you can't hear it...
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n da zone
Expert Class
Posts: 215
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posted May 08, 2003 06:43 PM
Edited By: n da zone on 9 May 2003 05:25
OK, I went over to Easyriders, and found the following link. It doesn't include a 'relay' in the discussion. What's the purpose of it?
http://www.zx-12r.org/Motorcycle_info/Information%20Pages/Fan%20switch%20mod%20-%20L_A_%20Busa's.htm
Anyway, it gives enough info to get the job done. I be workin on dat dis weekend!
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Megabyte
Pro
Posts: 1047
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posted May 08, 2003 07:33 PM
Yes, and I was worrying about some jerk coming along, and flipping the fan switch on just for having nothing better to do.
quote:
OK, I went over to Easyriders, and found the following link. It doesn't include a 'relay' in the discussion. What's the purpose of it?
http://www.zx-12r.org/Motorcycle_info/Information%20Pages/Fan%20switch%20mod%20-%20L_A_%20Busa's.htm
Anyway, it gives enough info to get the job done. I be workin on dat dis weekend!
____________
We First make our habits and then our habits make us.
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ninja12
Needs a job
Posts: 3310
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posted May 09, 2003 10:22 AM
Manual is a easy mod.
Remove left lower.
find a nice place to mount a toggle.
put 2 wires on toggle
find wire to fan.
connect one toggle wire to each side, perferably at the connector.
you can use wire splices or back tap the plug.
tape it up neat.
put lower back and ride.
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ninja12
Needs a job
Posts: 3310
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posted May 09, 2003 10:27 AM
I was hoping for something like the 17t zx11 sprocket swap.
Did the zx11 have a heat problem?
Will that sensor fit our rad?
Come on parts guys, Take this as a challenge.
PLEASE.
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ninja12
Needs a job
Posts: 3310
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posted May 12, 2003 06:12 AM
Am i the only one that wants this?
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Koz
Expert Class
Posts: 304
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posted May 12, 2003 08:19 AM
The switch is connected in parallel across the temp. sensor (not the fan). Connect the two wires (one to each wire on the sensor) off the switch to either wire off the sensor. If a relay is used, you may want to use a timed relay. This will allow the fan to run after the ignition is turned off and then time off (amount of time is adjustable), just like the OEM.
Koz
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ninja12
Needs a job
Posts: 3310
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posted May 13, 2003 07:09 AM
opps your right! my bad.
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