stragulus
New Member
Context: I have this old boombox and there is a clutch assembly used only for fwd/rwd. The assembly itself consists of 2 gears with the top gear pressing down on the bottom gear using a spring, and there's felt in between them for the slippage. There's a central pin going through the gears, and this pin just seems to sit in a plastic "holder" if you will, without any clips whatsoever holding it in place. Yet, this pin rotates when the gears are being driven.
As for the black magic part: I do not understand, for the life of me, how this was ever supposed to work. How is it possible that this thing is both held in place by essentially nothing, yet it has enough freedom to turn?
So, what happens now, is that this pin leaves its plastic socket when being driven, with attached clutch assembly and all, jamming the mechanism. What I am wondering is, how on earth was this supposed to ever work? Did this just happen to work when it was new and now the plastic bits have shrunk, giving it too much tolerance allowing its escape? Have you ever seen such an assembly before, or must there be a piece of the puzzle missing that happened to escape?
The part of the pin that sits in the socket has no redeeming features at all. Nothing where a clip could have secured it. And the whole assembly, as it looks, could just fall out at any moment as far as I can see. There is literally nothing holding it in place other than some lego bricks-like tension, which baffles the mind as it also still needs to be able to turn..
Some pictures so you can understand it a little better perhaps:
The two gears (left to right: top gear, bottom gear)
The central pin, this sits in the top gear which is hollow:
As for the black magic part: I do not understand, for the life of me, how this was ever supposed to work. How is it possible that this thing is both held in place by essentially nothing, yet it has enough freedom to turn?
So, what happens now, is that this pin leaves its plastic socket when being driven, with attached clutch assembly and all, jamming the mechanism. What I am wondering is, how on earth was this supposed to ever work? Did this just happen to work when it was new and now the plastic bits have shrunk, giving it too much tolerance allowing its escape? Have you ever seen such an assembly before, or must there be a piece of the puzzle missing that happened to escape?
The part of the pin that sits in the socket has no redeeming features at all. Nothing where a clip could have secured it. And the whole assembly, as it looks, could just fall out at any moment as far as I can see. There is literally nothing holding it in place other than some lego bricks-like tension, which baffles the mind as it also still needs to be able to turn..
Some pictures so you can understand it a little better perhaps:
The two gears (left to right: top gear, bottom gear)
The central pin, this sits in the top gear which is hollow: