What changed in the gear box when they switched from the teardrop bucket? - Snowblower Forum : Snow Blower Forums
 
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post #1 of 7 Old 08-30-2015, 09:29 PM Thread Starter
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What changed in the gear box when they switched from the teardrop bucket?

I recently noticed that in the late 70's when they switched the 924000 series from the teardrop style bucket to the newer shape (but still kept the white color scheme), the casing on the gear box also changed. That is, the old "smooth" style changed over to the vertically separated casing found in the later black colored ST824 models.

Does anyone know whether this change also entailed a change from cast iron to aluminum? I guess the greater question is this: Given the 1974-2004 924000 series models, which ones had the cast iron gear box and which ones had the aluminum one?

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post #2 of 7 Old 08-30-2015, 09:45 PM
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The cast iron was the round looking one, the aluminum was the 2 half one that looks more traditional. The 24" cast iron ones were helical gears while the 32" cast iron ones were worm gears. The 32" was more traditional looking because of the worm gears.

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post #3 of 7 Old 08-30-2015, 10:01 PM Thread Starter
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Great info.

I should have also said that I only had 24" buckets in mind.

This surprises me, as I was under the impression that all of the older white/orange-colored machines had cast iron gear boxes. So I guess the switch to aluminum occurred in 1979, then. Are these aluminum boxes much less sturdy than the older cast iron counterparts? I remember reading around here that it was a big deal when Ariens recently switched back to cast iron in the newer machines, but what about the reliability of the older aluminum boxes?
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post #4 of 7 Old 08-30-2015, 10:12 PM
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I have one from the early 80s that has aluminum. I pulled the gearbox apart and the grease was still good inside. I figured it would be all dried out, but was still good. Maybe a previous owner changed it?

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post #5 of 7 Old 08-30-2015, 10:20 PM
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are you sure? my 32 inch 10,000 series has the same exact gearbox as the 24 inch 10,000 series do
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post #6 of 7 Old 08-30-2015, 10:33 PM
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The 924 series from the 70s show a different gear box for the 24" and 32" models. You can see in the service manuals.

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post #7 of 7 Old 08-30-2015, 10:40 PM
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oh i thought you meant about the 10000 series. my freind has pre st 924000 series 1032 and it has a really robust auger gearbox, its definitely cast iron unlike an st824 i had which had an aluminum gearbox
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