So after waiting several weeks for Univeral Hovercraft to send me a replacement collet I was excited to get it mounted up again and get hovering again.
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| Some new parts |
When dissassembling I found a lot of metal filings.
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| The removed propeller with worn collet and filing visible in the old housing.. Also note the shorn off bolt. |
And based on those metal filings I thought I'd check the size of the collet new vs old.
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| New collet lower edge measurement |
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| Old collet lower edge measurement |
There's an exciting ~15 thousands of an inch extra clearance which
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| New collet top side measurement |
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| Old collet top side measurement |
And the wear was almost as much on the other side of the collet too.
For reference I also measured the shaft. And it's pretty close to the expected size still.
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| Shaft size near the end |
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| Shaft size where there appear to be the most wear |
So I moved onto reassembling the lift fan. Taking note of the bushing instructions.
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| Collet bushing instructions |
I did notice some differences in dimentions of the bushing mounting blocks, but the critical dimension where the bushing rides appeared to be the same.
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| New and old bushing housings side by side |
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| New and old bushing housings side by side. |
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I put everything back together. And I installed the collet to the shaft before installing the propeller so I could see and access it better. Everything looks good.
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| Reassembled collet end view |
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| Reassembled collet side view |
The bolts were all secured with lock-tite.
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| A close up trying to show the lock tite |
I added the propeller on last before reinstalling.
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| And fully assembled |
