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No needle bearing????

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Here is a Q that I have not found an answer to. Why does the thumper not have a wrist pin bearing like the 2smokes? After removing the stocker from my fo-fiddy and seeing the premature galling on the pin makes me wonder if there was a wrist pin bearing would the pins be stressed soo much to make them break?

And for you haters I did do a search with negative results. :thumbsup:

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That's a good question. Definitely no need to feel bad for asking. During all of the discussions during the wrist pin issues that were popping up, I do not once recall this topic comming up.

I have to also wonder if a bearing would do the trick. Its a tough call though since there are some accounts claiming that the whole issue wasn't the wrist pin but the design of the piston. Kinda interesting that Kawi's "fix" was to make a better wrist pin though.

Anyone else with some ideas?

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That is strange. I'm thinking they're trying to make the piston assembly as light as they possibly can.

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