The photo below tells a story about the oil pump gears shown.
Any guesses on what that story is?
DD

H'mmmm. Is 3D printing involved in this story?

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Yes, the white gear shown was 3D "printed".
DD

And can we do anything with it?

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

I donno yet, but it sounds like the start of a new, more cost-effective, faster way of making new oil pump pinions that are actually the way they're supposed to be.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Please excuse my ignorance here: I've heard of 3D printing, But have no idea what that white gear is made out of.. and or how such printing is done in a way that ends up with a steel gear being ready for it's intended use.

Would printed metal be hard enough?

smooth enough?

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Cool stuff Doc, you getting into the 3D printing Hobby?


Greg

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http://www.youtube.com/hyperpack

The plastic gear was "step #2,
We designed a new SL6 oil pump gear and proto-typed it with a 3D printed gear.(stereolithography)
The material used is soft, much like ABS plastic so it was not intended as a final product, just to prove the new design.
Truth is that the SLA gear was way too soft, It was impossible to really get good gear contact & load info. off t so we took the cnc file and machined another gear, out of aluminum. (thanks Wayno)
All this led to a small lot of pre-production gears... machined at a gear shop.

DD

Today- the oil pump gear.
Tomorrow - THE ALUMINUM HEAD!

I picked up 2 NOS /6 oil pump gears off of feebay recently. The old blue and black MOPAR packaging.

Now we need someone to write lyrics and sing "Pre-Production Gears" to the tune of Bette Davis Eyes.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

It is nice to find / use the original Chrysler produced oil pump gears. Those seem to have less failures.

Truth is, we still see oil pump gear failures, especially in high RPM / performance Slant engines..
I have personally tried many things to fix this issue but it still "bites" me (and others) every so-often.
This new gear design is the latest effort to prevent failures.

So what is different with this new gear design?
DD

Please tell us?

_________________
2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6