Forum

Welcome Guest 

Show/Hide Header

Welcome Guest, posting in this forum requires registration.
Pages: [1]
Author Topic: Estimating Counter weight needed
wandrson
Newbie
Posts: 23
Permalink
Post Estimating Counter weight needed
on: June 8, 2014, 23:00
Quote

In the instructable for the Polargraph, you indicate that you use about 150g counterweights. Am I correct in assuming that your counterweights (two of them) are about 300g and that the gondola (plus pen) also weigh about 300g?
sandy
Administrator
Posts: 1317
Permalink
sandy
Post Re: Estimating Counter weight needed
on: June 8, 2014, 23:28
Quote

My gut tells me the combined counterweights are heavier than the gondola, but I'll check tomorrow. They are not intended to be finely balanced, because the gondola moves around, the weights and motors work with each other, assisting or in opposition, and so there is no "correct" weight. I left that bit vague deliberately to discourage you from paying it too much attention 🙂
wandrson
Newbie
Posts: 23
Permalink
Post Re: Estimating Counter weight needed
on: June 9, 2014, 00:11
Quote

What can I say, I am an Engineer at heart. I like numbers! And since my last gondola print failed at about the 90% point (extruder jammed). I need something to take my mind off of my troubles!
sandy
Administrator
Posts: 1317
Permalink
sandy
Post Re: Estimating Counter weight needed
on: June 9, 2014, 21:05
Quote

Ach I forgot to weigh them! Tomorrow.
wandrson
Newbie
Posts: 23
Permalink
Post Re: Estimating Counter weight needed
on: June 10, 2014, 21:10
Quote

FYI,

My first prototype, shown in another thread, has a fully assembled gondola (servo and pen) that weighs just under 400g. It still seems to be working mechanically with the 150 g counterweights you talked about...
Pages: [1]
Mingle Forum by cartpauj
Version: 1.0.34 ; Page loaded in: 0.02 seconds.