<div dir="ltr">don't think that would work (correct me if i'm wrong)<div><br></div><div>with a normal offset caster,</div><div> the wheel turns so the ground contact point trails behind the swivel point,</div><div> making it self-steering; </div><div>to reverse direction 180', it has to go sideways a bit to "tell" the wheel to steer.</div><div>Makes it a little difficult to maneuver but also makes it possible to maneuver .</div><div><br></div><div>Take away that effect and the wheel will drag rather than roll</div><div>no matter which direction you push it in (except along the same line it's already turned).</div><div><br></div><div>It would be like a pivotless fixed wheel except that its direction would be undefined</div><div>and subject to change without notice.</div><div><br></div><div>Caster angle is what makes it possible for cars, bicycles, motorcycles</div><div>to go straight when desired and to turn when desired.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Nov 22, 2015 at 8:54 AM, Brian Munroe via Stagecraft <span dir="ltr"><<a href="mailto:stagecraft@theatrical.net" target="_blank">stagecraft@theatrical.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div>By "zero-offset" Dave does not mean (correct me if I am wrong) a zero-throw triple swivel caster (3 swivel casters mounted to a plate mounted to a bearing), but rather a caster where the wheel bearing/axle (horizontal rotation) is in-line with the bearing/mounting post of the caster body (vertical axis). Making the point of contact between the wheel and the ground inline with the vertical rotation of the caster and eliminating the "throw" you get with a typical swivel caster as the wheel pivots around the mounting. </div><span class=""><div><br></div><div>Brian Munroe <br><br>Sent from a rather small device with big fingers</div></span><span class=""><div><br>On Nov 22, 2015, at 8:37 AM, Bill Conner via Stagecraft <<a href="mailto:stagecraft@theatrical.net" target="_blank">stagecraft@theatrical.net</a>> wrote:<br><br></div><blockquote type="cite"><p dir="ltr">Both the plate and the individual swivels? 16 locks? Or does someone make a zero throw with one lock that clamps the plate and all three individuals at once, all aligned? </p>
<div class="gmail_quote">On Nov 21, 2015 5:19 PM, "Dave Vick via Stagecraft" <<a href="mailto:stagecraft@theatrical.net" target="_blank">stagecraft@theatrical.net</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Friday, November 20, 2015, sdwheaton via Stagecraft <<a href="mailto:stagecraft@theatrical.net" target="_blank">stagecraft@theatrical.net</a>> wrote:<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><br></div><div>They do make casters which allow you to lock the swivel when desired, best of all worlds. <br></div></blockquote><div><br></div><div><br></div><div>Close... If they were truly the best of all worlds, they'd be locking zero-offsets.</div></blockquote></div></blockquote></span></div><br>____________________________________________________________<br>
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