CLT Graph Question

[Boaski]

I've been messing around with trying to get a good data graph on ECMdroid. I finally managed to pull one in and open it up in MegaLogViewer. The data seems to look pretty good, mostly since I really don't know what to look for...

One thing that seems kind of odd is the temperature trend. It is the green line in the lower graph. It seems to spike suddenly and then drop off. This is the entire graph:


Here is a zoomed in view of the temperature spike:


The fan is set to come on at 220 and shut off at 180 with the key on.

Does this look normal?

 

[Cooter]

Are you looking for problems? Because thats how you find them

 

[Boaski]

I was actually looking to see where the AFV was running when I noticed the spike in the CLT. I would have thought the graph would show a rapid decrease to match the increase if the reading was caused by a short. Too bad this isn't linked to GPS so I could see where I was when the CLT reading spiked.

I always look for problems during the "new vehicle paranoia period". When I don't find anything wrong I rapidly drift into the "it's-always-been-OK complacency period". Then you throw in a new toy and a new tool to feed my unnatural attraction to spreadsheets and graphs... it just goes downhill from there.

 

[34nineteen]

Are you looking for problems? Because thats how you find them

It beats finding them like this.

 

[kz6fittycent]

It beats finding them like this.

 

[Cooter]

Makes sense, well put. It only looks like a couple degrees of "spike", it doesn't return (like you said), and theres a ramp/time on it so I would safely rule out a bad connection. I would guess a load on that circuit or something? Does it correlate with the fan turning on? I'm just spitballing. Can't say I've ever had to graph the CLT.

Nice ashtray 34:19:upset:

 

[34nineteen]

I've been messing around with trying to get a good data graph on ECMdroid. I finally managed to pull one in and open it up in MegaLogViewer. The data seems to look pretty good, mostly since I really don't know what to look for...

One thing that seems kind of odd is the temperature trend. It is the green line in the lower graph. It seems to spike suddenly and then drop off. This is the entire graph:
View attachment 15415

Here is a zoomed in view of the temperature spike:
View attachment 15416

The fan is set to come on at 220 and shut off at 180 with the key on.

Does this look normal?

I dropped my hot pocket.

 

[Boaski]

I didn't have a burrito for lunch that day, so it wasn't me. I also checked the O2 log and it didn't drop like I would have expected if I entered a "hang fire" state significant enough to bump the CLT graph. Besides I can prove that both Buell seats are free of heat damage or serious soiling. That didn't occur until Sundays ride when I entered a sharp downhill turn to the left going entirely too fast....

 

[Boaski]

Makes sense, well put. It only looks like a couple degrees of "spike", it doesn't return (like you said), and theres a ramp/time on it so I would safely rule out a bad connection. I would guess a load on that circuit or something? Does it correlate with the fan turning on? I'm just spitballing. Can't say I've ever had to graph the CLT.

Nice ashtray 34:19:upset:

I ran the CLT graph with the Fan Duty. Sure enough, when the fan came on the CLT spiked immediately AFTER. Do you also pick lotter numbers?

 

[Cooter]

I sacrifice virgins:eagerness:


7-10-33-65-82

 

[Boaski]

Are you sure it's not 4-8-15-16-23-42?

 

[Cooter]

DAMN! I missed a good one.


One crispy internet point to you kind Sir:eagerness:

 

[Boaski]

Rather than asking a bunch of redundant "does this look OK" questions, is anyone willing to send me their .msl file showing a normal set of readings from a XB12S?

 

[Cooter]

"Normal" depends on so many different variables, and you still wouldn't know range for each parameter. IMO, if it seems to run well, trust it:eagerness:

 

[Mesozoic]

I'm sure I've got some logs laying around from when I tuned the front cylinder, but as has been mentioned previously, the environmental conditions and other factors are going to wildly influence your CHT. As long as the CHT doesn't get out of control, you're fine - I'd take a close look at your AFV and O2 sensor readings to see where the ECM is commanding closed loop control as that's a regime where you'll find some heat, potentially. If you're seeing that your O2s are constantly lean during WOT operation, that would be another situation you'll want to investigate. A WBO2 is best for analyzing the fueling, but sometimes the spark advance can be blamed for high temperatures and then again, also high ambient temperature and inadequate airflow.

 

[Boaski]

Is there somewhere I can post one of files? Then anyone can see all the parameters.

 

[mike lowary]

[email protected]

 

[kz6fittycent]

Is there somewhere I can post one of files? Then anyone can see all the parameters.

Also, https://t.me/buell_motorcycles_1 but Mike knows what he's doing. Also, Mike is in the Telegram Group, previously linked.

 

[Boaski]

[email protected]

Thanks, Mike. I just sent you an email.