[SPAM] Re: RE: OS mixture question

[Rodney Tanner]

Hi Ron,
 
Eric H, or Dean P would probably be the best people to answer that.
 
I forget how many variables back I changed to the 3M heads. My basic take would be that they give a smoother mid range on an ESD pipe, are less sensitive to pipe setting, lower the compression - so run cooler, without affecting the top end performance. 
 
Rodney
 

Ron Van Putte <vanputte at cox.net> wrote:

On Apr 20, 2005, at 8:11 AM, Cameron Smith wrote:

> Are you supposed to change em? Seriously I change both plugs about 
> every 3 to 5 cases of fuel. Sometimes I just rotate the center plug to 
> the back position then replace the center plug. I replace ANYtime the 
> engine deadsticks or acts to much out of character. Most times they 
> are still good.
>  A buddy checked my idle the other day on my NEW Single plug (STOCK) 
> head & it also Idles at 1K. Gotta luv it!

I've got to ask this: Is there any real difference in the way an OS 
1.40RX runs with the Mintor 1.40 head 'extra' plug in the 'front' or 
'rear' position? I know that Lance says to run it with the 'extra' 
plug in the 'rear' position, but I theorized that there would be better 
fuel ignition if the 'extra' plug was in the 'front' position, as far 
away from the exhaust as possible. I've been running mine that way and 
the engine runs fine.

Ron Van Putte
>       
>                                       
>  
> -----Original Message-----
> From: discussion-request at nsrca.org 
> [mailto:discussion-request at nsrca.org] On Behalf Of 
> Jim_Woodward at beaerospace.com
> Sent: Wednesday, April 20, 2005 8:57 AM
> To: discussion at nsrca.org
> Cc: discussion at nsrca.org; discussion-request at nsrca.org
> Subject: Re: [SPAM] Re: RE: OS mixture question
>  
>
>
> Hi Rodney,
>
> Why are you changing plugs every 30 flights?  That get pretty 
> expensive in the long run.  Is the engine running lean?  I've seen a 
> few other using the 3M head and OSF plugs, and not having to change so 
> often.
>
> Cameron, how often are you changing plugs?
>
> Thanks,
> Jim W.

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