I was a little frustrated at the lack of availability and cost of the often missing impeller cap 021 119 149.

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So we started working on a version for those that wanted the cap to keep dirt and grime out but not the cost. Just developing it now but this is where we are.


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Overall not too bad but still has a little refinement to go. Will keep you posted!

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I never knew a cap went on that bolt. Nice work

Was there ever a cap for the late fan? I have only seen them on the pre 73 fans?

Cool Mike! Nice work!

I am not sure about the years. In the PET I think it shows it for the 1.7. I know I have struggled getting a few impellers hub bolts out at times over the years so I think keeping dirt out of all of them is not a bad idea.

Now we just need a 3d printed fan screen like the one that came on buses. Those things are getting really expensive!

Yep that is next!

Uhhhhhh, Mike? You look at the picture? Gonna have to hit you with a low yield Krusty bomb. Sorry. The cap doesn't cover the 3 bolts that hold the fan to the hub, only the one securing the hub to the crank, the one that's never a problem.

The Cap'n

You are correct, only the early tapered fan had the cap. The fan shown was "naked"

Nice work! However, I think I'd be more concerned with a possible balance problem from the missing blade in the impeller.

You are absolutely correct on the missing blade. That is why it is being used for the mock ups. Somebody did not notice the missing blade until it was all cleaned up and painted.

I would never even think about disputing that Cap'n. I usually got hold of stuff that was mostly junk and the ones I had problems with was due to rust from sitting not from operation. So I was likely claiming the worst of everything and this is not really a must have item. But I like it and it is just one of those things that I wanted and I thought others might feel the same.

But Cap' the next possible evolution of this is to cover the three bolts and add the cap. But we are still looking at that.

Well moving things along.

Changed the concept to this.

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Seems to have come out pretty good.


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Next step expand to cover the impeller bolts.

racing fan?

No just the impeller cap. But that's a great marketing angle!

^ The joke is AA marketed a fan years ago that had a bunch of missing blades as a "racing fan"

Crap! The fan we are using for mock ups has broken fin and I completely missed the racing application.

I guess I will just have to think of something else.

That is really funny, not unexpected of AA. But funny.