Crankshaft Counterweight Wear

[rmaynard 16,595]

My grandson Mason is starting a refresh of his Raider 12 engine. It is a K301. After removing the pan he discovered this on the bottom of the counterweights.

 

 

The wear looks to me like someone's feeble attempt at balancing.

Any other ideas?

 

[ebinmaine 74,673]

Believe it or not that's probably original to the Kohler factory.

I have a 16 horse that looks just like that.

I posted a picture of it here. I showed those pictures to my own small engine guy that rebuilds quite a lot of engines.

 

Nobody had a problem with it.

Edited yesterday at 04:56 PM by ebinmaine
Correct autocorrect

[rmaynard 16,595]

12 minutes ago, ebinmaine said:

Believe it or not that's probably original to the Kohler factory.

I have a 16 horse that looks just like that.

I posted a picture of it here. I showed those pictures to my own small engine guy that rebuilds quite a lot of engines.

 

Nobody had a problem with it.

Thanks Eric

[squonk 44,679]

Yes they didn't get carried away on making it pretty

[pfrederi 19,007]

K-181crank just back from the machine shop  .010 under..... Never paid attention before to the scuff marks...

 

 

[Achto 29,942]

Now that I look closer at the pics, I wonder if those grinder marks are from the foundry? Note that they are right on the casting seam. Might even be where the sprue and riser were cut off. If that's the case, the guy running the grinder at the foundry didn't care much what they looked like, as long as they passed inspection so that he could make his piece rate.

 

Edited 21 hours ago by Achto

[ri702bill 10,125]

Mice with dentures?? 

[Handy Don 14,742]

52 minutes ago, Achto said:

Now that I look closer at the pics, I wonder if those grinder marks are from the foundry? Note that they are right on the casting seam. Might even be where the sprue and riser were cut off. If that's the case, the guy running the grinder at the foundry didn't care much what they looked like, as long as they passed inspection so that he could make his piece rate.

 

Definitely 👍 The appearance of the grind didn’t matter, only speed and result. Look at how coarse a wheel was used!

Had a piecework job during a school summer vacation. It didn’t take me long to learn the standards, get fast, avoid scrap, and not waste a single motion. I wanted to make any money. 

[ri702bill 10,125]

Ah, piece rate.... Rhode Island once was the Jewelry capital of the nation. Myself and siblings had summer jobs drilling & deburring ring castings. My middle sister made a career in local jewelry, I certainly did not!

[Achto 29,942]

@rmaynard Really don't mean to high jack your thread. Just want to share this video of a crank shaft being cast.

 

This video is brought to you by OSHA. 

 

I'm not sure how any of the employees still have feet. 

[mrc 1,001]

........ definitely NOT osha approved!

[ri702bill 10,125]

10 hours ago, Achto said:

I'm not sure how any of the employees still have feet

All of them - just not quite the same "as supplied"..... Funny how none of them were hopping around once they stepped on a stray hot spot.... and I'm quite sure that the job pays quite well too - not.

[squonk 44,679]

11 hours ago, Achto said:

@rmaynard Really don't mean to high jack your thread. Just want to share this video of a crank shaft being cast.

 

This video is brought to you by OSHA. 

 

I'm not sure how any of the employees still have feet. 

Friend of mine was a foreman in a local foundry. His late brother worked there as well. He acquired a nickname when he got something caught between a metal bench and a heavy casting mold. I'll leave it to your imagination! 

[ri702bill 10,125]

Perhaps Kevin could enlighten them as to picking the proper flip-flop for the task...!!!