Chain driven pumps are pretty common. There are quite a few IC engines that use chain driven oil pumps.
In some older machine tools, the chain WAS the pump. A chain moving through an oil bath would carry oil up to some bearings on some lathes.
I haven't seen any exposed or driven off the axle however...
Chains can be fine as critical parts - for example, the timing belt on my TDI engine needs to be changed rather frequently. However, the timing chain (same job) on my Honda Insight apparently never needs replacement.
- E*clipse
Quote:
Originally Posted by freebeard
Adding a sprocket to one of the drive flanges would reduce the RPMs of the oil pump by the 6.8xx ratio. Although I've never heard of a chain-driven oil pump.
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