Subject:
|
Re: Help with redesigning a Boat Lock
|
Newsgroups:
|
lugnet.technic
|
Date:
|
Thu, 5 May 2005 13:22:29 GMT
|
Viewed:
|
3175 times
|
| |
![Post a public reply to this message](/news/icon-reply.gif) | |
In lugnet.technic, Brian Davis wrote:
> In lugnet.technic, Steve Hassenplug wrote:
>
> > Actually, you don't really need sensors at the
> > bottom, assuming the lock doesn't actually open
> > at the bottom. Just run it down for a length
> > of time, then run it up until the sensors are
> > pressed...
>
> Another possibility is to not make the connection between the lift lines
> and the lifted frame rigid, but "slippable" (for instance, instead of using
> a single line, use a loop that attaches to the frame by wrapping around
> several fixed pulleys or something. When the frame is lowered, overlowering
> it will cause the connections to slip and align the frame once per cycle.
> Getting the friction to stay correct throughout the show may be an issue,
> but this way the system would handle slight misalignments and correct them
> automaticly.
The 'water' and especially the boat are quite heavy, so any slippable
connections would not work. The weight would also cause problems with driving
the string reliably.
john
|
|
Message has 1 Reply:
Message is in Reply To:
![](/news/x.gif) | | Re: Help with redesigning a Boat Lock
|
| (...) Another possibility is to not make the connection between the lift lines and the lifted frame rigid, but "slippable" (for instance, instead of using a single line, use a loop that attaches to the frame by wrapping around several fixed pulleys (...) (19 years ago, 4-May-05, to lugnet.technic)
|
20 Messages in This Thread: ![Help with redesigning a Boat Lock -Jeff Van Winden (4-May-05 to lugnet.technic, lugnet.org.ca.rtltoronto)](/news/x.gif) ![](/news/246.gif) ![Re: Help with redesigning a Boat Lock -Ross Crawford (4-May-05 to lugnet.technic)](/news/x.gif) ![](/news/46.gif) ![Re: Help with redesigning a Boat Lock -Ross Crawford (4-May-05 to lugnet.technic)](/news/x.gif) ![](/news/46.gif) ![Re: Help with redesigning a Boat Lock -Ross Crawford (4-May-05 to lugnet.technic)](/news/x.gif)
![](/news/x.gif) ![](/news/268.gif) ![Re: Help with redesigning a Boat Lock -Steve Hassenplug (4-May-05 to lugnet.technic)](/news/x.gif) ![](/news/46.gif) ![Re: Help with redesigning a Boat Lock -Brian Davis (4-May-05 to lugnet.technic)](/news/x.gif) ![](/news/46.gif) ![You are here](/news/here.gif) ![](/news/46.gif) ![Re: Help with redesigning a Boat Lock -Brian Davis (5-May-05 to lugnet.technic)](/news/x.gif)
![](/news/x.gif) ![](/news/268.gif) ![Re: Help with redesigning a Boat Lock -Larry Pieniazek (4-May-05 to lugnet.technic)](/news/x.gif) ![](/news/46.gif) ![Re: Help with redesigning a Boat Lock -Steve Lane (5-May-05 to lugnet.technic)](/news/x.gif) ![](/news/46.gif) ![Re: Help with redesigning a Boat Lock -David Koudys (5-May-05 to lugnet.technic)](/news/x.gif)
![](/news/x.gif) ![](/news/268.gif) ![Re: Help with redesigning a Boat Lock -John Gerlach (4-May-05 to lugnet.technic)](/news/x.gif) ![](/news/46.gif) ![Re: Help with redesigning a Boat Lock -Jennifer Clark (5-May-05 to lugnet.technic)](/news/x.gif) ![](/news/246.gif) ![Re: Help with redesigning a Boat Lock -David Koudys (5-May-05 to lugnet.technic)](/news/x.gif)
![](/news/x.gif) ![](/news/28.gif) ![](/news/x.gif) ![](/news/x.gif) ![](/news/68.gif) ![Re: Help with redesigning a Boat Lock -danny staple <orionrobots@gmail.com> (5-May-05 to lugnet.technic)](/news/x.gif) ![](/news/46.gif) ![Re: Help with redesigning a Boat Lock -Jennifer Clark (6-May-05 to lugnet.technic)](/news/x.gif) ![](/news/46.gif) ![Re: Help with redesigning a Boat Lock -danny staple <orionrobots@gmail.com> (7-May-05 to lugnet.technic)](/news/x.gif)
![](/news/x.gif) ![](/news/268.gif) ![Re: Help with redesigning a Boat Lock -Rob Stehlik (5-May-05 to lugnet.technic)](/news/x.gif) ![](/news/46.gif) ![Re: Help with redesigning a Boat Lock -John Guerquin (5-May-05 to lugnet.technic)](/news/x.gif)
![](/news/x.gif) ![](/news/68.gif) ![Re: Help with redesigning a Boat Lock -Brian Davis (5-May-05 to lugnet.technic)](/news/x.gif)
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|