REFLECTOR: It's been really quiet this week

[John Dibble]

On 2/18/2014 2:42 PM, Michael Watson wrote:
> Brian,
>
> For some unknown reason, when the plugs are changed from massive to 
> Iridium fine wire,
> the CHT seams to increase quite a bit. Running my Franklin engine over 
> the last six years in Florida ,
> I never had high CHT problems until I changed to the fine wire plugs. 
> At John's suggestion, I reduced
> my advance from 28 degrees to 25 degrees and the temps returned to 
> what I saw before the change.
> Ironically, the engine seems to develop slightly more power and run 
> much smoother.
That's because detonation reduces power.  When advancing my EI in flight 
I advance until I get max power (max speed).  I've also noticed that the 
engine is not as smooth with detonation.

John
>
> Mike W.
>



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