[Spridgets] Re; ect; Jag engine!

Lester oldsaabguy at comcast.net
Tue Apr 13 13:33:35 MDT 2010


There is a machine that will allow the entire rotating assembly, from  
front to rear, to be spun and then balanced.

Lester

On Apr 13, 2010, at 11:21 AM, jjj at acsnet.com wrote:

> Thanks for all the excellent comeback on this. I understand balancing
> everything that is immovable but I have never understood balancing the
> crank itself. I'm sure there is plenty of info on this so pls don't  
> waste
> to much time on it but can someone give a concise answer on  
> balancing the
> crank.
> I assume that counterweights are fitted to the rod journal's but I  
> have
> never understood how that weight is determined. You are dealing with a
> mass[rod and piston] that is constantly changing its distance from the
> center of rotation and hence its crank counterwieght requirement. I
> assume the goal is just something that limits the stress'es. Is the
> fitted counterwieght a certain percentage of the rod and piston  
> weight or
> what?
>
> Kurt.
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