Re: Brake drum removal 1948 22nd Series
Posted by Fish'n Jim On 2014/7/5 22:45:13
Put it into context. There's a sometime problem releasing the drum/hub from the shaft with this design. There's likely many causes.
I do not know why Packard, et al, used this design in that era. A good research project for someone.
The tapered shaft and key is common and was in use before and still in use for some applications.
I will say in order for a taper (without a key) to transmit torque it has to be a pressed or shrunk interference fit. I don't think that's the case here. Maybe that's what they were thinking/trying to achieve, I don't know.
A key prevents two pieces from moving in relation during rotation and that's what transmits torque.
A taper provides alignment without a bearing.
So having a key and a taper transmitting torque would be unnecessary.
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I do not know why Packard, et al, used this design in that era. A good research project for someone.
The tapered shaft and key is common and was in use before and still in use for some applications.
I will say in order for a taper (without a key) to transmit torque it has to be a pressed or shrunk interference fit. I don't think that's the case here. Maybe that's what they were thinking/trying to achieve, I don't know.
A key prevents two pieces from moving in relation during rotation and that's what transmits torque.
A taper provides alignment without a bearing.
So having a key and a taper transmitting torque would be unnecessary.
Attach file:
Size: 20.38 KB; Hits: 56This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=146417