I don't think the cooling fan could cause false readings on the engine temp sender. The sending unit screws into the cylinder head and its the end of it thats inside the engine that picks up the temperature. If the fan can cause false readings then so can the air flow over the engine going down the road or even a good cross wind at a stop light.

 

OOPS! I didn't check this thread for awhile and apparently missed that......my bad! (it's hot up here, don't come now! LOL)
My fans are still in the box! Hope to change that this week, but will probably be working 7 days a week for the next month so won't get a chance to check them out after getting them installed. Probably be to hot to ride much anyway........one more year to retirement and hopefully much more riding!!! ( I did sneak it out late one day last week for about a 40 mile little jaunt in the cool of the evening......man I've got a nice bike!!!!!)

 

I just figured that the head fins are staying cooler because of the numbers..it appears that the oil continues to rise in temp even though the head temp sending unit says the heads do not rise in temperature...for lack of a better idea....

 

Here's my 2 cents worth -

Since the oil is sprayed on the bottom of the Pistons as well as circulating throughout the engine, the Oil will continue to pick up heat until it's capacity to absorb heat is balanced by it's ability to "lose" heat via some cooling mechanism.

This cooling mechanism could be an oil cooler (which would transfer some of the heat to surrounding air) or transfer of heat into other components (that are cooler than the oil such as the Oil Tank itself).

Eventually, the Oil would reach a point where the gains and loses are balanced unless there is additional heat provided (say by going from idle to 70 mph). That would be the oil's stabilized temperature which could be no higher than the Engine Temperature and normally below that.

Keeping the Engine Temperatures down will allow for lower Oil Temperatures at all operating conditions.

 

To step back to your initial post suggesting the fans cause the oil to get hotter than it would without the fans; absolutely no way that condition could exist, the hottest part of the engine is staying considerably cooler with the fans than without, so there will be less heat to transfer to the oil. How much, I don't know. You seem to be trying to draw a direct and proportional relationship between CHT and OT, but one does not exist. CHTs are generally much hotter than OT, and they get hotter quicker and cool off quicker than OT. OT will continue to rise until it meets that point of normalization, wherever that may be for a given bike with its unique configuration. EITMS has nothing to do with oil temp, its all about CHT and controling it, or at least preventing it from reaching a critical or detrimental temperature. Funny thing is the ECM only reads the front head (ET); I have seen the rear at 330+ when the front reaches the EITMS trigger temp one. the fans don't prevent a rise in head temp but they do stabilize them around 230-240F for most reports. The OEM sensor is not giving the ECM a false reading, but rather "the" actual reading that it sees, after the cooling efect of the fans, nothing false about it, that is the temp. Although the ET reading will be much lower than without fans, it is still within "normal" operational parameters. I would have to look it up again but somewhere around 160-170F front CHT temp the ECM acknowledges the engine as warmed up and it exits the the cold high idle/enrichment mode and transitions into normal warmed up mode. At no point is the oil temperature used as an input for the ECM, there isn't even an OEM oil temp sensor. I don't think the fans have nearly the impact on oil temp on a bike that has an oil cooler, but as mentioned earlier they must have some effect, with a lower overall temp. Now for my big question, you were in the first batch, so you have had the fans about 2 months, have you seen higher oil temperatures than before the fans? I'm not being a smartass, I am interested because since I started the whole cooling adventure several years ago, I have disproved some of my own initial theories, so I don't discount any possibilities.

 

How 'bout this batch, 65 housings! just finished welding them 'em up this evening, and yes they are manufactured in my garage, 1/2 of my garage anyway. Headed to paint tomorrow, the new colors, silver and granite just came in. I didn't get a real warm welcome from the CVO guys, but I ponied up for the paint for them anyway. Looking to be out of this backorder situation soon. I'm going to keep building housings even though I don't have fans to fill them all. Just trying to get ahead of the game a little bit, you know. Picking up 50 black housing tomorrow, will take a few days to get them assembled, so I'll be sending out payment notifications soon, and shipping next week. Thermal switches on order, and the chrome sample is due back any day. All in all, things are going pretty well.
Holler!

 

Sure hope my name is on one of them!

 

to answer your questions I am going to go backwards from your points...first I don't have anyway on my bike to measure oil temps, so I just have to go by what others have experienced, but I do feel a lot of heat coming off of the engine with the fans on, so they are definately working to remove the heat from the heads (duh)..My initial concern was that MAYBE because the fans are keeping the area near the temperature sensor cooler than the rest of the motor that the EITMS was not pulling in as early as otherwise and thus allowing the oil temps to rise higher than it would if the EITMS were to pull in....I am not saying that it allows the engine temps to rise to a dangerous level, as we all know that is not happening...But if there was a way for the engine to actually read the oil temps. as opposed to reading the head (metal) temps that it would be preferable...all in all I am very happy with your product and I believe the fans are removing a tremendous amount from the engine not only when sitting still but up to at least 40 mph...And on a side note I wonder if the fans were to be lowered so they blow (more) over the cylinders instead of the heads would they allow the EITMS to still enable while cooling the engine oil as it flows back down through the cylinders to the pan..

 

Well, finally got back from my trip and the fans were waiting at home...

Come on slow traffic!! Here we go Daytona Main Street during Bikeweek!!

Well, not really completely installed, just needed to see how it looked.

Will be doing the install this weekend.

Before:



After:

 

I admire your enthusiasm. This can only bring you success in your endeavor. Thanks so much for keeping us (the back order group) so well informed. I can see you will definitely succeed turning this into a viable business.

Thanks again for a wonderful product.