Post by Rob Albritton on Nov 27, 2021 11:08:10 GMT -5
Solid couplers in BLACK resin are being shipped to zTrack next week. We will follow with solid couplers in Grey Pro resin after the holidays.
What’s the difference? Well, color for one.
Black:
Better dimensional stability over time (will not change its shape as much)
Stiffer - so better spring action in the coupler box and can pull more weight before bending apart
More brittle - it doesn’t bend so much as it breaks. Bend it back and forth a few times and it will break. Hit it (drop on the floor) and it will break.
Grey Pro:
Good dimensional stability over time, but not as good as Black. (This is marginal)
Has a little more “give” to it. If you drop the car, the coupler has a lower likelihood of breaking.
Spring action is still good, but the whisker springs can lose some of their ability to re-center the coupler in the box over time. This should
Not be an issue because these are solid couplers. I’m fact, I’m thinking of making a batch without springs as they really only help a small amount when pushing cars instead of pulling in a solid coupler form.
You can look at FormLabs web site for more technical data on Black vs Grey Pro. There are not direct plastic counterparts.
What’s the difference? Well, color for one.
Black:
Better dimensional stability over time (will not change its shape as much)
Stiffer - so better spring action in the coupler box and can pull more weight before bending apart
More brittle - it doesn’t bend so much as it breaks. Bend it back and forth a few times and it will break. Hit it (drop on the floor) and it will break.
Grey Pro:
Good dimensional stability over time, but not as good as Black. (This is marginal)
Has a little more “give” to it. If you drop the car, the coupler has a lower likelihood of breaking.
Spring action is still good, but the whisker springs can lose some of their ability to re-center the coupler in the box over time. This should
Not be an issue because these are solid couplers. I’m fact, I’m thinking of making a batch without springs as they really only help a small amount when pushing cars instead of pulling in a solid coupler form.
You can look at FormLabs web site for more technical data on Black vs Grey Pro. There are not direct plastic counterparts.
