Question about conducting heat

[noogsmoke]

Is there a particular reason - other than readily available 6" stove pipe - that 6" is the only(?) diameter used in double barrel builds? 

I took a look at some today for my build but they seemed huge!  Would decreasing the size to 4" not conduct enough heat?

 

[daveomak]

4" flows 1/2 of 6"... You want all the flow you can get... I would use 8" and control the heat with the air inlet on the FB....

 

[noogsmoke]

I assumed there would be some difference in flow between sizes but it had me thinking...

Obviously, the moe flow the better.  However, if our ideal temps are only within 50-75* of each other then would reducing the diameter control itself essentially?

I am running two 4" elbows instead of one/two 6" elbows.  If I can hit ideals temps running full open, albeit smaller, pipe then why mess with larger ones and mess with inlet airflow?

I suppose the question is: can I hit optimal temps on wide open 4"? Or is the control available from 6" and FB inlet that much more ideal?

 

[daveomak]

Someday, you may want to adjust the temperature....