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Ok well I will try inking and see what happens. Thanks
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A freshly dressed point, Matt,...
NEEDLSTONE.JPG
Usually gives the best reading.
....Cotten
PS: Sometimes you must grind them from scratch; Idle needle shown...
NEDLGRND.jpgLast edited by T. Cotten; 05-17-2024, 10:32 AM.AMCA #776
Dumpster Diver's Motto: Seek,... and Ye Shall Find!Comment
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Nice equipment!! What angle is the grinding stone/needle? Thanks
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Its an ancient flat-belt Van Dorn valve grinder, Matt,..Originally posted by 39ChiefBonnie View Post
Gifted to me by Ronnie Kingsley from his father Richard Kingsley, both longtime Chief Blackhawk members, and both sadly missed.
Highspeed angles varied:
HX 30º
GX 27º - 30º
DLX 30º
SV HD 30º
OHV HD 45º
M74B 22º
M53, 53A1, M74, and probably others have stepped HS needles, and the -53 series has stepped LS needles.
My fossil record for lowspeeds varies greatly, and should only be measured geometrically.
(The Van Dorn is still set,.. but its way way off the scale!)
....CottenLast edited by T. Cotten; 05-21-2024, 01:21 PM.AMCA #776
Dumpster Diver's Motto: Seek,... and Ye Shall Find!Comment
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Great info and the photos really add to the understanding. Thank you.Comment
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