Fan cooling logic?

[Buzz]

Just brought home a new to me (2100mi used) Ulysses.

50 degree day 35 miles on the highway to get home and I was surprised the fan was on when I pulled off the highway ramp.

What should I expect as normal for the fan on/off? I know it's supposed to be triggered off the rear cylinder temp but I'd have thought riding at speed with engine turning between 3500-4500 rpm wouldn't require the fan.

The dealer I bought the bike from doesn't know much about the product. I guess I can check the guys in the shop but I thought I'd check owners' experience first.

 

[BuellPartsGuy]

Doesnt sound like anything out of the ordinary. The only things you can do to help remedy that more is run synthetic oil, get a right hand side air scoop, or cut vents into your undertail panel.

 

[2Evil4U]

Sounds normal.

About the only time mine won't come on after a half hour of riding is if it's <35 degrees.

 

[buellboy03]

I have a RH scoop on my baby that pushes air to the rear cylinder and it only runs when I turn the Key off now [up]

 

[BuellPartsGuy]

Not to mention it looks a little better because now it is symmetrical.

 

[PlayWithGravity]

BuellBoy, can you let me know where you got your right side scoop? I'd like to get one for my Firebolt.

 

[BuellPartsGuy]

Click the Parts Shop link at the top. I know they have them...

 

[useless]

hi there
"cut vents into your undertail panel"

presume this is the plastic inner guard?
Has anyone done this? any advice appreciated
cheers

 

[bahamasair]

I looked in the parts store but cant find the right side scoop. Anyone got a link to it?

 

[buellboy03]

I paid $300au delivered for my scoop from another Buell Forum [cool]

 

[Old School One]

Good Day from the Thousand Islands area Upstate,NY Riding my 07' since APR of this year, Just shy of 8,000 mls as of today. Just love it..
Has anyone considered placing a larger oil cooler up under the seat/tail assm. between the side case mounting rails? I made some mesurements and find a much larger cooler/fan assm. would fit...
Not much to look at though...
Any other Ideas...[up][down]

 

[FIDOSOL]

Larger Air Cooler probably wouldn't make a noticable sensor as the fan is run off the rear cylinder temp. All the fan does is suck the hot air out as fast as it can. Best bet would be to force cold air through one or both of the air scoops. Now if you wanted to get really crazy, rig up a water cooling system that goes around the block, have heard of it on some crazy custom bikes, but never actually seen it, I can tell you that it works quite well on Gaming and Super computers. So I'm sure it's feasible...

 

[eric]

Its been a while since I have been on this site. The fan issue has been something I have been working on for all of this time and I think I have finally sorted it. I can definately confirm that a right sided air scoop makes a huge difference to the length of time it takes for the motor to heat up to the point where the fan kicks in. In our New Zealand climate it means pretty well no fan comes on in the winter spring autumn months However 2 up it obviously still is an issue as more is being asked of the motor. In Summer there still is an issue so the thing that finally has fixed the issue is that I got the mechanics at the dealership to wire in a variable resistor with a dial on the handlebar. This varies the current to the fan. It means I can have the fan going full bore when I am going at speeds where I cant hear the fan ie over 65 km/hr = 35 - 40mph When I want to stop and avoid the fan noise eg at the Gas station filling up, I can reduce it to virtually nil. Less current to the fan = slower fan speed = a noise level I can control -all with a twist of the dial... Finally.

 

[dave_xb12r]

That sounds like a cool mod, but as I understand it, the fan's main purpose is to make sure the rear cylinder temp matches the front temp. They both need to cool down at the same rate. I would leave it up to the computer.... but then again, I could be wrong

 

[eric]

Interesting point but the Guys at the Buell dealership never mentioned that issue. They were mainly concerned about matching the resistor correctly for the situation.

 

[zmc]

eric, I recently got an 06 XB12X and think its great. I've tried to track a right side scoop through the Wellington Dealer but no luck. Where did you get yours from?

 

[FIDOSOL]

Right Side Scoop Thread That is a thread where you can arrange to get one from. LeFox can hook you up. Hope that helps.

 

[frogmorton]

Hey ZMC-I am after a scoop too. LeFox has emailed and said its cheaper to get two so if you are still keen let me know and maybe we could ordered the two.

([email protected])
Michelle

 

[ches]

sounds like a buell they are not open engines like a harley

 

[cb21983]

So interesting factoid. If you get the EBR Race ECM it uses the 2010 and later fan logic. As far as I was told from EBR it will not run at shutoff anymore or at low speed as often (I think they raised the temp it kicks on at) but it runs more when you are on the road over 45MPH. This is all what I gathered from a phone conversation with them so I don't have any exacts.