[SteveThackery]

• in gear + clutch lever out + off the throttle + engine braking = pop, pop, pop (aka decel popping)
  
• in gear + clutch lever in + off the throttle + coasting = zilch (aka idling)
• out of gear + clutch any which way + off the throttle + coasting = zilch (aka idling)

That's what I get, anyway.  =)

I've seen people argue over the understanding of "clutch in" and "clutch out" - and even "engaged" and "disengaged." So I tend to simplify/clarify it down to "lever in" or "lever out."

This is all so complicated!!  All you need is the phrase "on the overrun", which means the throttle is shut and the engine is being "pulled" by the bike.  That creates a particular set of conditions in the combustion chamber and makes our bikes pop.  (Lots of other bikes and cars, too, especially older designs.)

[former_rider]

This is all so complicated!!

It wasn't my intent to be complicated - just specific. I understand the phenomenon.

Earlier in the thread there were several mentions of "popping" with the "clutch pulled in." Rather than question the authors' veracity, I chose to state what my experience has been. I stated it with some specificity as to the various factors I've found to be required for "popping" to occur in this way - and what happens absent certain of these factors.

I guess I could have just quoted the "clutch in" posts - commenting with a simple "WTF?!  "

[KD5ITM]

KD5ITM, what silencer are you using?

Steve

Im using the stainless steel Motad header and muffler sold by Hitchcock.

[KD5ITM]

And to go back to the  statement I made about the carbon in the old header pipe and not running to lean.  Im running the power commander v with the stock unmodified map.

[KD5ITM]

This is all so complicated!!  All you need is the phrase "on the overrun", which means the throttle is shut and the engine is being "pulled" by the bike.  That creates a particular set of conditions in the combustion chamber and makes our bikes pop.  (Lots of other bikes and cars, too, especially older designs.)

Now remember... some of you guys live in England and speak a funny kind of English 

[Farmer_John]

Now remember... some of you guys live in England and speak a funny kind of English 

Yes. And you live in Texas. Shouldn't you be speaking Spanish?

ninguna sonriente este tiempo , lo  Siento

[Farmer_John]

And to go back to the  statement I made about the carbon in the old header pipe and not running to lean.  Im running the power commander v with the stock unmodified map.

Wait. You're running the stock map (stock filter and exhaust) with the K&N and Motad?

...and you think your fuel/air is good?

[ace.cafe]

I assume that it is known that fuel is delivered differently at different throttle positions, and that it is possible to be  lean at some throttle positions regardless of rich or lean or correct mix at other throttle positions.  The carbon residue 8n the exhaust header is not necessarily an indication of fuel mixture at the closed throttle position.

However, if you like the pops, please carry on.
 

[SSdriver]

Wait. You're running the stock map (stock filter and exhaust) with the K&N and Motad?

...and you think your fuel/air is good?

I think he meant the stock map that comes with the PCV. Otherwise the PCV is useless.

[KD5ITM]

The stock map that comes with the power commander. Otherwise what's the point?

[KD5ITM]

Yes. And you live in Texas. Shouldn't you be speaking Spanish?

ninguna sonriente este tiempo , lo  Siento

I'll keep my comments to myself ;-)

[xpertmachinist]

late, but as promised pictures of header pipe where it meets the cylinder head. You can see the multi layers.

[ace.cafe]

Thanks!
 

[Guaire]

That's the Motad?!
  The Carpy is the total opposite. I'm feeling I made a $200 boo boo.

[phoenixt]

That's the Motad?!
  The Carpy is the total opposite. I'm feeling I made a $200 boo boo.

If you are refering to the pic that xpertmachinist posted, I believe that is a cross section of  the stock header pipe.

Steve