web-based beam calculator - RHS's only

Yes. When you are lost in the detail of something you can lose your way. A two-wheeled dolly just aft the centre would do very well. Then it becomes purely a wheeling exercise. You'd still want to keep the weight down, but you could go up a bit to a common stock beam size with a wall thickness which means in overload it will only plastically bend - never buckle.

I've been busy learning about building regulations, snuck-through the programming / beam-calculator as a "naughty treat" - but been quite frazzled. And lost in the brain-burn of the details of the project.

Thanks, David, Jim, everyone.

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I found this tear down video back when I acquired the 3500 bearing/hubs. Kinda interesting that it looks like they had a problem with heat treating and the shape of the hub/bearing surface:

It's not a long vid and I have it starting just before the guy shows the bad area...

<snip>

I found this tear down video back when I acquired the 3500 bearing/hubs. Kinda interesting that it looks like they had a problem with heat treating and the shape of the hub/bearing surface:

It's not a long vid and I have it starting just before the guy shows the bad area...

Leon Fisk Grand Rapids MI

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I wonder if they have a machine that rough and finish turns it, mills or broaches the sensor ring and grinds the bearing races in one chucking.

<snip>

That sounds like something Ed Huntress would've known or who to ask. Really miss some of the old sources of info😑

I was a bit surprised to see inside one of these "throw away" hubs and how they were being designed. A neighbor was having trouble with front wheel bearings on a Lumina. I kinda figured his friend doing the work was torquing it to an incorrect value. After seeing these 3500 hubs pulled off a friends truck I looked up the Lumina. Sure enough, it uses these throw away hubs. Torque setting is already done. Just install it, hope it works right...

<snip>

That sounds like something Ed Huntress would've known or who to ask. Really miss some of the old sources of info😑

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The only auto factory machine I've seen in operation made AC spark plugs, and the actual pressing operations weren't visible, only the rows of incomplete plugs running around the walls of the little stand-alone booth in Flint.

I quoted a test station to measure alternator rotor outputs and found out how they are made; everything pressed sequentially onto the shaft, but I never saw it done. AFAIK spark plugs are assembled the same way.

Hi Jim and Leon. I guess my ears were burning. I haven't looked in for a year or two. 'Sorry to disappoint you, Jim, but I don't know the answer. I am really, really long out of metalworking. However, that is a job that certainly *could* be handled by a multi-function machine. The multi-function turning machines we sold at Wasino years ago could have done it. Although a grinding spindle could have been applied to finish it, my gut feeling is that the grinding would have been done in a secondary operation, on a precision grinding machine. But, maybe not. The limiting factor on that kind of operation is the ability to get the grinding concentric to a very high degree of accuracy. Secondary spindles on a multi-function machine are pretty marginal in that dept. I hope everyone is well. I'm sorry to hear about Gunner. I'm well. Hasta luego.

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Good to hear your well and about. Past few years have been pretty bad for the older generation...

I'm still doing my best to annoy people, seems to be my super power😏

Hi Jim and Leon. I guess my ears were burning. I haven't looked in for a year or two.

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A former neighbor moved to New Mexico while her daughter remained local. Some time after the daughter got a bad feeling that something was wrong and called her mother, who answered that all was fine. A moment later she said OH NO!, there was a fire in the kitchen. She didn't survive.

I'm still doing my best to annoy people, seems to be my super power😏

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I claim to be a card-carrying stress donor. Is it not better to give than to receive?