On 12/5/22 12:05, Chris Albertson wrote:
I had only eyeballed the equations, not plugging in numbers and figured it
was a toss-up. Put you can always modify the tube and turn it into a
solid. Simply fill it with chopped carbon or glass fiber and epoxy paste,
pack it in and let it cure. I've
I had only eyeballed the equations, not plugging in numbers and figured it
was a toss-up. Put you can always modify the tube and turn it into a
solid. Simply fill it with chopped carbon or glass fiber and epoxy paste,
pack it in and let it cure. I've made parts with before and they are very
st
On 12/5/22 09:44, Thaddeus Waldner wrote:
I think the design has several other issues:
There appears to be a pretty large imbalance between the motor inertia and axis
inertia. You can fix this by using a reduction on the jackshaft. For reference, some
of the older Stratasys systems have a near
On Mon, 5 Dec 2022 at 14:46, Thaddeus Waldner wrote:
>
> The bigger issue, in my mind, is the lightweight frame.
It does appear fairly spindly compared to the (same volume) Prusa XL. But
then the XL costs about 5x as much.
And the Prusa XL doesn't exist, either.
--
atp
"A motorcycle is a bi
I think the design has several other issues:
There appears to be a pretty large imbalance between the motor inertia and axis
inertia. You can fix this by using a reduction on the jackshaft. For reference,
some of the older Stratasys systems have a nearly identical arrangement. They
use about 3/
On 12/5/22 06:59, andy pugh wrote:
On Mon, 5 Dec 2022 at 02:20, Chris Albertson
wrote:
and we don't even know the exact kind of steel in the rod. Without
knowing more it is a toss-up.
You don't need to know, all iron alloys have the same stiffness (to within
a couple of percent).
The shear
On Mon, 5 Dec 2022 at 02:20, Chris Albertson
wrote:
> and we don't even know the exact kind of steel in the rod. Without
knowing more it is a toss-up.
You don't need to know, all iron alloys have the same stiffness (to within
a couple of percent).
The shear modulus (G) for steel is 80 and for c
On Sun, Dec 4, 2022 at 4:37 PM gene heskett wrote:
>
> It seems to me that 19" of 20x20 square tunbing would have less twist
> per NM of applied torque than the same length of 8mm steel shaft, but
> IDK. Hence the question.
This is a tough question. You are in effect asking to compare the
tor
Greetings all;
The ender5 plus uses a double shafted nema 17 motor mounted on the
nominal center of a 20x20 alu extrusion used for a top/rear frame rail.
So that motor is in the middle of a 21" hunk of alu extrusion
Its coupled to the ends on the x axis via 10" 8mm rods running from each
end
