Does anyone really think the axle bushing reinforcements are necessary and worth the b.#. to install them??
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Are axle bushing inserts necessary
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I’m not planning to install the inserts. None of the BHs I’m familiar with that to my kind of flying use them.
A couple guys have said the inserts make installing skis harder and they weren’t sure they were actually necessary. I had hoped to be on skis this year but it isn’t going to happen. Hopefully next year.
kestrel, did you install the reinforcement insert?Scratch Built 4-place Bearhawk. Continental IO-360, 88" C203 McCauley prop.
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I have no idea why the inserts would make skis harder to install. The reinforcements are friction fit inside the axles, no change in OD. Some Piper gear have 1 1/4in axles and the skis are for 1 1/2in axles. Those have to be bushed. Maybe that's what they are referring to. Otherwise it makes no sense. Here's how I did mine, Rob Taylor did his the same way.
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Ah, because your taking about straight skis and I’m talking about retractable wheel skis. Retracts attach via the axle ID.Scratch Built 4-place Bearhawk. Continental IO-360, 88" C203 McCauley prop.
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I haven't yet.
It makes me slightly nervous when I think about it, but I don't know if I ever will. I just inspect for cracks every 100 hours. It would take a long time to crack through.
I understand the inserts were a response to Pat F's crash in the desert after his axle cracked through, plus one other machine which was also scratch-built. I understand the factory welds have never cracked, on model A or B aircraft.
However, the welds have been redesigned to account for this risk on the newer gear and shouldn't need reinforcement.
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