Ambient Air Temp Sensor Relocation

[The Governor]

Lots of views on the effects and side effects. I left it right where it was but added a turbo fan with direct flow to the air filter with no change at all...:thumbup:

wish I knew how to flip the picture but the other side cool the rear cylinder ....

Nicely done!:clap:

 

[The Governor]

Update!

I certainly appreciate all of the input! Blueknight911, you were correct about the location directly above the new JT Aircleaner. I decided to move it just inboard of the coolant reservoir, sensing air from the upper right duct/wheel well area. Outside of the engine compartment, in free flow, but protected from any foreign object damage or contact.
The results:
My temp indication is near dead on. I rode her hard and fast, and also just a standard ride. After logging 112 miles, my feeling is she runs better than she ever has. Stopping during the ride did show an increase in ambient temperature, but was very quickly returned to an accurate representation of the current temp in less than 1/4 mile! She responded perfectly out of the gate, and at 105 mph. Airflow across the sensor, in my testing, was beneficial. Pressure variance was minimal, as it wasn't directly in ram air.
Summary- I believe the air temp/pressure sensor is now providing a more accurate picture of my riding enviroment, since primarily the temperature is much more in line with real time. If there is any adverse reaction over time or the next 10k miles, I will be sure to update.
Thanks again to all who posted responses!
Gov

 

[spyderCodes]

I was going to post a reply that included the formula used by typical ECMs to determine the length of time injectors are opened based on temperature and pressure.

But I Gilliganed into something better.
A link to an online ecm calculator.
http://stealth316.com/2-calc-idc.htm

It takes some reading to understand how to use it but the neat thing is you can watch the difference in injector performance by only changing one parameter.

You can plug in various operating parameters and watch what happens to the length of time injectors are on (They call it Duty Cycle).

It effectively demonstrates what a small effect minor differences in temperature have on the actual duty cycle.
For example the duty cycle of an injector with an air temp of 95F was 48.04%, at 90F it was 48.47%
A difference to be sure but it is represents only a 0.89% of change in the duty cycle.
What that means is that small variances have only very minor effects on the injector duty cycle.

 

[The Governor]

I was going to post a reply that included the formula used by typical ECMs to determine the length of time injectors are opened based on temperature and pressure.

But I Gilliganed into something better.
A link to an online ecm calculator.
http://stealth316.com/2-calc-idc.htm

It takes some reading to understand how to use it but the neat thing is you can watch the difference in injector performance by only changing one parameter.

You can plug in various operating parameters and watch what happens to the length of time injectors are on (They call it Duty Cycle).

It effectively demonstrates what a small effect minor differences in temperature have on the actual duty cycle.
For example the duty cycle of an injector with an air temp of 95F was 48.04%, at 90F it was 48.47%
A difference to be sure but it is represents only a 0.89% of change in the duty cycle.
What that means is that small variances have only very minor effects on the injector duty cycle.

Albeit a small duty cycle variation at 5F, the radiant heat in Texas summer, has shown a greater than 20F difference between actual and ambient (parked in the sun). It takes 15-20 minutes of riding to get even close to actual temp.
My goal here was not to make a massive difference in performance. It was, however, to provide more accurate information to the ECM. In a world where we will spend hundreds of dollars on anything that may gain 1-2 hp on a vehicle (in theory), this was an easy change that quite frankly, I thought would be more embraced. If anything, I have an accurate temp gauge now...lol
Spydercodes- I cannot give you enough high praise for your knowledge and APP. You and this site are the most useful tools I need for Spyder ownership. This spring will be 30 years in Aircraft Maintenance, and 39 years riding some type of motorcycle. What you do enables many to own and maintain, such a fantastic machine. Thank you.
Gov

 

[KageRider]

Update!

I certainly appreciate all of the input! Blueknight911, you were correct about the location directly above the new JT Aircleaner. I decided to move it just inboard of the coolant reservoir, sensing air from the upper right duct/wheel well area. Outside of the engine compartment, in free flow, but protected from any foreign object damage or contact.
The results:
My temp indication is near dead on. I rode her hard and fast, and also just a standard ride. After logging 112 miles, my feeling is she runs better than she ever has. Stopping during the ride did show an increase in ambient temperature, but was very quickly returned to an accurate representation of the current temp in less than 1/4 mile! She responded perfectly out of the gate, and at 105 mph. Airflow across the sensor, in my testing, was beneficial. Pressure variance was minimal, as it wasn't directly in ram air.
Summary- I believe the air temp/pressure sensor is now providing a more accurate picture of my riding enviroment, since primarily the temperature is much more in line with real time. If there is any adverse reaction over time or the next 10k miles, I will be sure to update.
Thanks again to all who posted responses!
Gov

Maybe I missed something... But can you describe where you put the sensor? I am looking to move mine as well, but I don't know where and it seems like you have got it figured out. Pictures? Maybe?:nopic:

 

[pitzerwm]

Normally, my pictures were larger, I'm using the same upload method, what's changed at my end?

 

[KageRider]

Is that the new location? Or the one you tried originally?

Sent from my SM-N920R4 using Tapatalk

 

[IdahoMtnSpyder]

View attachment 132765

Normally, my pictures were larger, I'm using the same upload method, what's changed at my end?

Nothing, at your end I don't think. Something about the forum s/w has changed. The post includes a thumbnail size version only. You have to click on the pic to get a full size version. This is the way, I think, pics have always been when you add them with the manage attachments button below the edit box. Maybe the Insert Image icon method above the edit box has been changed.

 

[IdahoMtnSpyder]

View attachment 132765

Normally, my pictures were larger, I'm using the same upload method, what's changed at my end?

Nothing, at your end I don't think. Something about the forum s/w has changed. The post includes a thumbnail size version only. You have to click on the pic to get a full size version. This is the way, I think, pics have always been when you add them with the manage attachments button below the edit box. Maybe the Insert Image icon method above the edit box has been changed.

I just looked at one of my posts in 2014 where I used the Manage Attachments method. What we're experiencing with the Insert Image icon matches the other method.

So no, you are not doing anything wrong or different. The forum software is.

 

[spyderCodes]

if you want a full size picture like this:

or like this

Then
1. upload the jpg to an album & save same.
2. copy the photo url from the the proper box
3. Un-select the "Retrieve from remote file and refernece locally"

 

[The Governor]

Maybe I missed something... But can you describe where you put the sensor? I am looking to move mine as well, but I don't know where and it seems like you have got it figured out. Pictures? Maybe?:nopic:

I had it mounted aft of the coolant reservoir, but it picked up too much radiant heat when standing still in Texas heat...lol
Now she lives in the upper right air duct. I have logged about 800 miles with her here, and she runs perfectly, with an accurate reading on temp as well...