2017 Tech Info

[Infidel!]

Originally Posted by GregD

I may be tempted.

You may be a little vague also......

[MrSurly]

Originally Posted by Fe Butte

So is high $ balancing voodoo or does it help some?

Precision crank balancing isn't voodoo, it's real science.
The gist of it is that the balance of the crank is specified to deal with the expected weight of many separate components, each of which has a specified design weight. Each weight specification has tolerances, of course, so your mass-produced assembly will be balanced within some 'acceptable' range, not really perfectly balanced.
The performance builder's balancing service "blueprints" the crank assembly by adding/removing weight in the right spots to actually match the exact weight of YOUR parts, rather than the putative weight of generic parts. This only addresses the primary balance (mostly the up-down stuff) and can affect the front/rear forces but bloody little.

The end result is a smoother engine which, when treated rudely, is less likely to fling its spinny-bits violently asunder.

[Fe Butte]

Blueprinted...


Story: The janitor where I used to be employed at would tell everyone new to the area that every POS stake bed truck firewood truck had a blueprinted engine.


This was of great amusement to one Sgt who used to be here, I could get him to bust out laughing at the mere mention of something being blue printed, I.E. this broom I'm sweeping the shop with...


One day I was sharpening my chain saw. As the janitor was mouth breathing, behind me watching me sharpen it, I thought it would be of some amusement to mark the top of the chain teeth with a blue magic marker. (Started out as the start tooth of my filing.)


Well sure enough he asked what I was doing and I told him I was blueprint sharpening the chain. The Sgt overheard this and about pissed his pants laughing...