28-02-2019, 08:52 PM
(This post was last modified: 28-02-2019, 08:55 PM by Bob Culver.)
The days of frugality and experiment are largely over but, esp with modern ratings, and cf motor bike engines, I cannot see why two relatively inexpensive ordinary ball races cannot be used at the front. To avoid the expense of modified width bearings on later engines a single bearing and spacer rings may even suffice.
Many cars had direct timing gears although many later not metallic. (Model A, Morris Oxford 1950, Holdens etc) with several thou crank end float. Many earlier makes would have been metal to metal. Other than possibly noise I doubt if a few thou end float matters.
Before o rings were common I used to reduce camshaft oil leaks by simply building up with solder.
Many cars had direct timing gears although many later not metallic. (Model A, Morris Oxford 1950, Holdens etc) with several thou crank end float. Many earlier makes would have been metal to metal. Other than possibly noise I doubt if a few thou end float matters.
Before o rings were common I used to reduce camshaft oil leaks by simply building up with solder.