1
General stuff / Re: Picking things back up
« Last post by webby2 on March 28, 2024, 05:56:26 am »Need to add that I have a means of adding in an internal potential, I am using rubber bands to add that potential.
I have been able to add the correct number of rubber bands so that when I hang the 90g mass on the 30mm side I can almost balance the arm, remember that the other side of the arm weighs approx. 20g so not much.
Within the range the internal potential holds, outside the range it does not.
I took the whole system off the mount and and placed the central shaft in a set of bearings and with the rubber bands in place I needed to add 45g to the 30mm side to bring that lever level, so the whole system is balanced around the axle for the lever.
I just did something silly, I mounted the bearing block in my vise and then put the lever axle into that bearing block. My spring scale weighs approx. 45g in total, the scale shows 30g when I hang it from the hook by itself. So for 180 degrees of rotation that spring scale is almost enough weight to hold the lever level, (the scale shows 30g while hanging by itself), pull on it so about about 35g is showing and this comes to a peak, so from no extra needed up to about 5g extra and then back to no extra needed. The other 180 degrees of rotation and I need to pick up on that spring scale a little bit, down to approx 25 and this is again from none needed up to a max and then back down to none needed.
I have been able to add the correct number of rubber bands so that when I hang the 90g mass on the 30mm side I can almost balance the arm, remember that the other side of the arm weighs approx. 20g so not much.
Within the range the internal potential holds, outside the range it does not.
I took the whole system off the mount and and placed the central shaft in a set of bearings and with the rubber bands in place I needed to add 45g to the 30mm side to bring that lever level, so the whole system is balanced around the axle for the lever.
I just did something silly, I mounted the bearing block in my vise and then put the lever axle into that bearing block. My spring scale weighs approx. 45g in total, the scale shows 30g when I hang it from the hook by itself. So for 180 degrees of rotation that spring scale is almost enough weight to hold the lever level, (the scale shows 30g while hanging by itself), pull on it so about about 35g is showing and this comes to a peak, so from no extra needed up to about 5g extra and then back to no extra needed. The other 180 degrees of rotation and I need to pick up on that spring scale a little bit, down to approx 25 and this is again from none needed up to a max and then back down to none needed.