Author Topic: electric cooling fan (Read 16743 times)

aberegg05 · « **on:** June 16, 2014, 09:44:59 PM »

Who has sussesfully hooked up and currently or has ran a fan on their R? If so educate me on how doing so and whats involved.

rk88r · « **Reply #1 on:** June 17, 2014, 09:36:27 AM »

I haven't done but I've been looking into it (like the hole in the fence at the nude beach). https://webstore.spalusa.com/en-us/productlist/0164/products/fans/motorcycle-atv/fans-motorcycleatv.aspx The top 5.6" one might fit in the Laeger. On a stock frame I would try one off a 450r or z400. Summit racing has a lot to choose from also.

Tbone07 · « **Reply #2 on:** June 17, 2014, 02:13:23 PM »

This is a good question and topic. Especially for the XC guys. I'd be very interested in this. I know Troy had one on Elsinore

rk88r · « **Reply #3 on:** June 17, 2014, 02:16:42 PM »

Troy had his set up as a pusher. I measured the one on the daughters kfx/z 400 and it won't fit on the Laeger.

JesseA420 · « **Reply #4 on:** June 17, 2014, 03:21:50 PM »

could you use the lighting circuit to power it?

aberegg05 · « **Reply #5 on:** June 17, 2014, 03:29:15 PM »

I ride xc and I heat up quick. Hopefully somone has an answer

rk88r · « **Reply #6 on:** June 17, 2014, 05:19:13 PM »

amps x volts = watts The one I linked to needs 40-45 watts. This one looks interesting also https://webstore.spalusa.com/en-us/product/0164/products/fans/motorcycle-atv/30103021/va37-a101-46s-5-2-p-12v-sum.aspx I'm guessing a battery would be required. Hopefully someone who has done it can chime in.

aberegg05 · « **Reply #7 on:** June 17, 2014, 05:26:49 PM »

If I heard correct we would need a dc fan and a lithium battery.

rk88r · « **Reply #8 on:** June 17, 2014, 08:17:28 PM »

Quote from: JesseA420;36953

could you use the lighting circuit to power it?

04/05 450r's have a fan without a battery. I wonder if the R's stator could power it? Often the fan is needed most when the rpms are down.

Onski326 · « **Reply #9 on:** June 17, 2014, 10:02:46 PM »

(waiting patiently...)
I'd love to hear this one too. I've got an XC race this weekend down here in Texas. Race is at 4pm and high is to be 96.

rk88r · « **Reply #10 on:** June 18, 2014, 12:04:07 AM »

Some info here. http://www.atvriders.com/vbb/showthread.php?442608-spal-fan-on-a-trx

Jerry Hall · « **Reply #11 on:** June 18, 2014, 11:16:15 AM »

Quote from: aberegg05;36895

Who has sussesfully hooked up and currently or has ran a fan on their R? If so educate me on how doing so and whats involved.

A stock TRX 250 R generates about 75 watts at high RPM or about 5 to 6 amps. 75 watts is just enough to run the stock lights. A fan that is large enough to keep the engine cool at low vehicle speeds (2nd gear riding) will take at least 4 amps. At very low vehicle speeds (idling and 1st gear) you will need a fan that pulls 6 to 10 amps. The fans on the four strokes ATVs usually pull around 10amps and UTV pull up to about 15amps. The typical fan on automobiles pull around 30 amps each.

You will not get 5 to 6 amps at low RPM on the stock stator but could probably get 5 to 6 amps with a 200 watt upgraded lighting coils. You will need to install a full-wave rectifier and voltage regulator. A small battery would be a plus and help during short times of idling when the stator output is low.

Bio86 · « **Reply #12 on:** June 18, 2014, 01:03:09 PM »

Run a 200 watt stator, floating ground to single phase reg/rect and battery setup should be able to push a fan that size just fine. It may drain the battery if you're just putting around with that and lights on.

rk88r · « **Reply #13 on:** June 18, 2014, 01:29:53 PM »

http://sicassracing.com/store/products/fans/trail_tech_ktm_fan_kit http://sicassracing.com/store/products/electrical_accessories

aberegg05 · « **Reply #14 on:** June 18, 2014, 04:17:40 PM »

Where can I get a rectifier and what type of battery do I need. Of course I want as small as possible.