| Author | Message | ||
     Old_mil |
The last few Uly rides I've taken, I've noticed something odd: the fan never seems to come on while the engine is running. Doesn't matter if I'm rolling down the highway, in stop and go traffic, or have jumped off the bike with it running in neutral on the sidestand to open the garage door. ...but immediately after I hit the kill switch, on the fan comes. Does this mean that it just doesn't need to be running at that point in time? Or is it possible for this to be some sort of a failure? Just figured I'd check. | ||
| Packdog |
I think that is "normal" behavior, at least in my experience. Mine acts that way on about half of my rides. I'm not sure what the specs are for the fan running - some temp for some amount of time? some temp and rising to turn it on, lowering to turn it off? a different temp to turn it on if the engine is shut off? At any rate, often my fan runs in traffic, rarely on the highway, and about 50% of the time when it hasn't been on at all, it kicks on when I park it after the ride. | ||
| Davo |
These are the parameters as measured by the ET which is located in the rear head: Fan on with engine on at 428F Fan off with engine on at 356F Fan on with engine off 338F Fan off with engine off 302F My Uly's garage arrival temperatures were 397-402F with the fan running prior to my right side scoop. My garage arrival temps were the same with my right side scoop but the fan was not running. | ||
| Jammin_joules |
So do you generally feel the extra air scoop is beneficial? If so, why? Was the install straight forward? Whose did you use? jammer | ||
| Davo |
Jammin joules, Yes, I think the right side scoop is beneficial. Even though the operating temperatures were similar the fan operation was greatly reduced. This would provided a certain amount of insurance for touring. If the fan was to fail then you could continue without it. This would not be the case without the right side scoop. The other benefit is not having to listen to the fan nearly as much. I used American Sportbike (carbon fiber) and the install was easy. All you need is a torx 27 socket. | ||
| Crusty |
Hmmm; people bitch if the fan runs, and they worry when it doesn't run.(Not necessarily the same people) Me, i'll ride my Uly whether the fan is running or not. The fan is there to cool the engine quicker on shutdown. Buell discovered that the oil was pooling in the heads, and cooking from the heat after shutting the engine down. That's why the fan runs after you shut the bike off. The fan also helps increase airflow when moving at slower speeds. If my fan dies, I'll call my dealer and have him order another. I won't let a dead fan decrease my use of my Uly; though I would avoid sitting in slow moving traffic. I'd also change my oil more often. | ||
| Davo |
My fan would run at 65 mph on two hour rides when the outside the temperature was 40-45F. If the paramount requirements for the cooling fan were for slow moving operation and shut down then the fan would not have been operational during the above condition. I think the fan is used for Buell to meet tight emission requirements. By the way, Crusty, did you make Springfield this year? | ||
| Old_mil |
My fan would run at 65 mph on two hour rides when the outside the temperature was 40-45F My worry precisely. I picked the bike up in November and rode it home. The air temperatures were a solid 40 degrees lower than they have been this week. Even then, in stop and start traffic, the fan would run. It's going to be 90 today, I'll get out on the road and see what happens.} | ||
| Kc69xlch |
the fan definitely seems to run less as the bike breaks in. 2-3k | ||
| Packdog |
Plus when/how often the fan runs seems to change behavior based on what oil is being used. I think there is a long thread about that in one of the "synthetic vs. petroleum" or "which sythetic to use" posts. | ||
| Hooliken |
Damn.....and I thought this was going to be another loud vs not loud exhaust debate. I even refilled my coffee just so I could baffle ya'll with my BS opinions on this subject. But on this subject. Fan runs when I ride it, fan runs when I shut it off.....sometimes. As long as fan runs..Ken be happy. |
