Posted by David Robinson on October 25, 2004 at 11:32:46:
In Reply to: Help with old standard posted by George on October 20, 2004 at 10:30:57:
I don't know, you youngsters!
From the information supplied we have 3 items of gear data available:
1. 14 pitch (14P).
2. Straight cut teeth.
3. 20° Pressure angle.
1. In the early days most gears were imperial, this being DP (or CP for reference). As there was no metric sizes to confuse things, the pitch was called just 'pitch'. In this case 14P refers to 14DP as 14 inch CP would be rather large.
2. Straight cut teeth was the term used to refer to a 'Spur Gear'.
3. 20° Pressure Angle I think is self explanatory.
This leaves us with a gear(s) of 14DP, Spur, 20° pressure angle.
Off for another rest now and have my long white beard combed. David Robinson
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