SOHC.co.uk Forums > CB350/400
CB400 Swing arm Collar
Nurse Julie:
--- Quote from: orcadian on May 14, 2018, 11:14:37 AM ---Not sure why anyone would want to fit needle rollers, they are only suitable for complete rotational applications, not the small angular movement on a swing arm. Look at the damage inflicted on later Mini radius arms when some bean counter thought that needle rollers were better. Phos bronze every time for me. BTW phos bronze is not porous, only sintered ‘Oilite bronze’ is and that’s the material which should be soaked in oil overnight before fitting. Also Oilite bronze should never be reamed to size as it blocks the minute oil holes which give it it’s lubing properties.
Ian
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I'm definitely no metallurgist but I thought SAE 660 Bronze was Phosphor bronze......I could be totally wrong though.
Orcade-Ian:
No Julie you are dead right, that is a phosphor bronze but no amount of immersion in oil will make it porous. That’s why I made the distinction between it and Oilite bronze which is designed to hold oil. Oilite is made by sintering which a process whereby the material is ground and powdered into the right consistency and then forced into a mould under extreme temperature and pressure. It’s the same way they make tungsten carbide tips for tools. I think Oilite was invented by Chrysler.
Phosphor bronze will be fine for those bushes though.
Ian
Nurse Julie:
--- Quote from: orcadian on May 14, 2018, 03:42:03 PM ---No Julie you are dead right, that is a phosphor bronze but no amount of immersion in oil will make it porous. That’s why I made the distinction between it and Oilite bronze which is designed to hold oil. Oilite is made by sintering which a process whereby the material is ground and powdered into the right consistency and then forced into a mould under extreme temperature and pressure. It’s the same way they make tungsten carbide tips for tools. I think Oilite was invented by Chrysler.
Phosphor bronze will be fine for those bushes though.
Ian
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Interesting stuff Ian and way over my head but I have been doing some reading on it and as long as the bushes are 841 Oilite Bronze or SAE660 bearing bronze, it doesn't seem to make any odds either way to the performance of the bush. The Oilite does not need lubricating as often, as they are self lubricating, so if you are a bit lapse on your swing arm maintenance, you will not do as much damage as if you don't maintain the swing arm with the SAE660 bushes.......
I learnt something new today that has absolutely no benefit to the quiche I'm making !!!🙂🙂🙂
Orcade-Ian:
Never did like Quiche, ever since they stopped calling it bacon and egg pie 🤓
Either of those bronzes but please no needle rollers,
Ian
Nurse Julie:
--- Quote from: orcadian on May 14, 2018, 05:19:23 PM ---Never did like Quiche, ever since they stopped calling it bacon and egg pie 🤓
Either of those bronzes but please no needle rollers,
Ian
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Bacon and egg pie, surely cheese and bacon flan 😁😁😁
I only ever fit or sell bronze bushes Ian.
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