[SEL] FMZ Gear - serious reply

[Al Harris]

G'day Rob,

Seems someone figured out a way to kill two birds with one gear. ;-)

The Judge is running cover for me ATM and I have a local offer to 
machine me up one if it gets to the stage where I have to embrace 
""never," "always," and "must."". I really would like original though.

BTW PSP7 blew that image up to 180% without to much outline blurring.

Cheers,

Al Harris
Summer Clarence Coast NSW Oz

al.harris at rustic-engines.com



Rob Skinner wrote:
> On Dec 3, 2008, at 3:00 PM, Al Harris wrote:
>   
>> Please don't egg them on. The gist of this thread has been totally
>> lost/stolen/misappropriated/bent and forgotten. It was about the  
>> gear I
>> need to complete my FMZ.
>>     
>
>
> Hi, Al.
> Hopefully the extended exchange will help you in your quest for the  
> proper gear for your engine.
>
> The following will not solve your dilemma, but will throw some light  
> on a subject where some have played fast and loose with the words  
> "never," "always," and "must."
>
> Check out a picture (link below) of Greg Procopchuk's Jacobson  
> engine.  It's a traditional four cycle engine, with 720 degrees of  
> crankshaft rotation between firing.  You can't see much detail in the  
> photo, and on that day I was shooting film, so a better picture is not  
> readily available.
>
> The CAM GEAR is the big one nearest Greg.  It's also the pump jack  
> gear.  Although you can't see the gear on the crankshaft, you can tell  
> it's considerably smaller.  I forget what the ratio is, but I seem to  
> think it's four-to-one.
>
> As you've probably already figured out, the cam as a few extra lobes.
>
> Link:
> http://engines.rustyiron.com/tulare04
> Click on the fourteenth menu item from the top.
>
> Good luck finding your gear.
> Rob
>
>
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