TPS Settings - is ZERO really 0

[Super Dave]

I pulled a TB off one of my working bikes that still had the blue paint on both at the TPS and the butterfly set screws. 

 

Testing per the Zero=Zero

With key on, not started, no cables and everything as is...

Off the #1 pin in idle position I had 0.358v.

Off the #3 pin in full throttle position I had 3.809v. 

 

Then (without touching the TPS) I slacked the butterfly set screw off untill it wasn’t touching and light moved the throttle back and forth to rest softly against the body (Zero Position). 

 

Off the #1 pin in “Zero” position I repeatedly had 0.191v.

 

So is Zero=Zero really Zero (0.010v)? Is my blue painted settings grossly different from other’s OEM settings?

 

I have another bike that the previous owner really screwed up the TB setting but I’m not really asking for help on that. Just trying to understand. 

[dirtrider]

22 minutes ago, Super Dave said:

I pulled a TB off one of my working bikes that still had the blue paint on both at the TPS and the butterfly set screws. 

 

Testing per the Zero=Zero

With key on, not started, no cables and everything as is...

Off the #1 pin in idle position I had 0.358v.

Off the #3 pin in full throttle position I had 3.809v. 

 

Then (without touching the TPS) I slacked the butterfly set screw off untill it wasn’t touching and light moved the throttle back and forth to rest softly against the body (Zero Position). 

 

Off the #1 pin in “Zero” position I repeatedly had 0.191v.

 

So is Zero=Zero really Zero (0.010v)? Is my blue painted settings grossly different from other’s OEM settings?

 

I have another bike that the previous owner really screwed up the TB setting but I’m not really asking for help on that. Just trying to understand. 

 

 

 

Afternoon Dave

 

O=O isn't correct, we have known that for quite a while now.  If you want the exact O=X voltage then give (roger 04 rt)  a PM as he has done quite a bit of testing/measuring on this.

[Jim Moore]

The best discussion I've seen of that topic is in this thread:

 

https://advrider.com/f/threads/tps-alignment-idle-speed-adjustment-beyond-zero-zero.996719/

[roger 04 rt]

240 mV is the magic number for zero degrees throttle. At 190 mV you’re in good shape. It was probably 240 when new but shaft wear closed it a bit. 

[Super Dave]

Well, Jim's link to Roger's post is much appreciated! 

Reminded me of another thread (Daniel) I was trying to digest yesterday...

http://en.danielpage.com/index.php/2015/08/10/bmw-r1100rt-throttle-body-setup-on-high-milage-bike/

 

A lot more to digest with Roger's info.

Thank You Roger!!!

Updated Post...

https://advrider.com/f/threads/tps-alignment-idle-speed-adjustment-beyond-zero-zero.996719/page-6#post-32357006