05-08-2018, 11:11 PM
(This post was last modified: 06-08-2018, 07:42 AM by Bob Culver.)
Hi Stuart
I take it the pressure angle is less so the teeth are more vertical and the top edge digs in? I dunno if ordinary practice applies to skew gears but perhaps they assumed Sevens belonged to the 14 deg era? Tinkering with blue would presumably reveal. But how do you judge angle from such a shallow clay impression? or is it an illusion? Curious they got the angle so wrong yet backlash presumably OK.
It would ruin the gears but presumably one of each faced flush would enable the teeth to be compared shoulder to shoulder..
Has it been established what made of?
You would have expected the maker to have tried meshing with blue!
I take it the pressure angle is less so the teeth are more vertical and the top edge digs in? I dunno if ordinary practice applies to skew gears but perhaps they assumed Sevens belonged to the 14 deg era? Tinkering with blue would presumably reveal. But how do you judge angle from such a shallow clay impression? or is it an illusion? Curious they got the angle so wrong yet backlash presumably OK.
It would ruin the gears but presumably one of each faced flush would enable the teeth to be compared shoulder to shoulder..
Has it been established what made of?
You would have expected the maker to have tried meshing with blue!