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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Higher volume oil pumps......
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<blockquote data-quote="timetraveller" data-source="post: 872" data-attributes="member: 456"><p><strong>HIgher volume oil pumps</strong></p><p></p><p>The problem with the original Vincent oil pump housing in the context of a gear type oil pump is its small diameter. If you get the chance look at the kind of oil pump which is used in racing car engines. This has a five lobed 'star' with curve points which sits off centered in a cylindrical, and rotatable housing. Rotation of the star rotates the outer part, which because it is offset means that the mesh between male and female teeth varies in depth and thus acts as a pump. (Think W ankel engine). This type of pump in a car engine at tick over will shift about one gallon of oil in one minute with no back pressure. Fitting such a device into the space of an original Vincent oil pump would be tricky (perhaps impossible) but cutting and either welding or bolting a down wards extension to oil pump housing would make it trivial but probably unacceptable to the majority of owners. It needs someone to make a rough and ready prototype of a size which would fit into a standard Vincent housing to determine how much oil would flow in a Vin before saying more.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 872, member: 456"] [b]HIgher volume oil pumps[/b] The problem with the original Vincent oil pump housing in the context of a gear type oil pump is its small diameter. If you get the chance look at the kind of oil pump which is used in racing car engines. This has a five lobed 'star' with curve points which sits off centered in a cylindrical, and rotatable housing. Rotation of the star rotates the outer part, which because it is offset means that the mesh between male and female teeth varies in depth and thus acts as a pump. (Think W ankel engine). This type of pump in a car engine at tick over will shift about one gallon of oil in one minute with no back pressure. Fitting such a device into the space of an original Vincent oil pump would be tricky (perhaps impossible) but cutting and either welding or bolting a down wards extension to oil pump housing would make it trivial but probably unacceptable to the majority of owners. It needs someone to make a rough and ready prototype of a size which would fit into a standard Vincent housing to determine how much oil would flow in a Vin before saying more. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Higher volume oil pumps......
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