Newbie question on shaft angle variations
Posted: Fri Feb 21, 2020 11:17 pm
Hi, My name is Doug, and I am building a 3" scale Traction engine and need to make various gears (some of which are bevels not at 90 degrees).
I have been experimenting with the differential bevels as these should* be fairly straight forward I thought. When I enter the data on the input page, I can select 36 T crown wheel, 12 T pinion, 6DP, 0.75" face width. but strangely the shaft angle even though I edit the setting to make them add up to 90 degrees, comes back with just under 90 degrees. When I export the project, and view the project details, the angle is even less than 90 degrees - I am confused as to why this might be.
I know what the gears "should" be for the differential as I made a set for a previous model using a published design, and thought I would check them with Gearotic, but I get slightly different numbers, and am not sure it his is because the dimensions are only shown to 2 decimal places, or if it is even possible to change the precision to include more decimal places.
Thanks in anticipation, and apologies if this is a very basic question...
Regards,
Doug
I have been experimenting with the differential bevels as these should* be fairly straight forward I thought. When I enter the data on the input page, I can select 36 T crown wheel, 12 T pinion, 6DP, 0.75" face width. but strangely the shaft angle even though I edit the setting to make them add up to 90 degrees, comes back with just under 90 degrees. When I export the project, and view the project details, the angle is even less than 90 degrees - I am confused as to why this might be.
I know what the gears "should" be for the differential as I made a set for a previous model using a published design, and thought I would check them with Gearotic, but I get slightly different numbers, and am not sure it his is because the dimensions are only shown to 2 decimal places, or if it is even possible to change the precision to include more decimal places.
Thanks in anticipation, and apologies if this is a very basic question...
Regards,
Doug