---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 03/06/21: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 10:05 AM - hangar elevator (Ken Ryan) 2. 10:57 AM - Re: hangar elevator (user9253) 3. 11:50 AM - Re: hangar elevator (Sebastien) 4. 01:55 PM - Re: hangar elevator (Charlie England) 5. 03:05 PM - Re: Re: hangar elevator (Ken Ryan) 6. 04:43 PM - Re: Re: hangar elevator (Sebastien) 7. 05:07 PM - Re: Re: hangar elevator (Alec Myers) 8. 05:15 PM - Re: Re: hangar elevator (Sebastien) 9. 07:24 PM - Re: EFIS Erratic Temp Readings () ________________________________ Message 1 _____________________________________ Time: 10:05:59 AM PST US From: Ken Ryan Subject: AeroElectric-List: hangar elevator Greetings, I am putting a homemade elevator in the hangar. It will have a stop at the top (living quarters over hangar) a stop in the middle (small storage room over top of hangar bathroom) and a stop at the bottom (hangar level). I will power this with a 12 volt winch that comes with a wireless remote control. Here's how I would like it to work. For normal operation, the remote "up" or "down" button would be used to move the elevator cab. When the cab reaches it's destination, a limit switch would cut off power to the winch. For accessing the storage over the hangar, a second switch would put the elevator controls into "mode b." When in mode b the remote would then be used to move the cab to and from the middle stop. Can you guys help me to understand how I can accomplish this using limit switches and relay(s)? Thanks, Ken ________________________________ Message 2 _____________________________________ Time: 10:57:02 AM PST US Subject: AeroElectric-List: Re: hangar elevator From: "user9253" Does the winch have any built-in limit switches? Do you have a wiring diagram for the winch? Will people be riding in the elevator? If so, will there be some way to keep the elevator from falling if the cable breaks? There are mechanical designs that allow an elevator to move slowly, but stop it if it moves fast (falls). -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=500870#500870 ________________________________ Message 3 _____________________________________ Time: 11:50:18 AM PST US From: Sebastien Subject: Re: AeroElectric-List: hangar elevator Is this elevator for people or goods? On Sat, Mar 6, 2021, 10:11 Ken Ryan wrote: > Greetings, > > I am putting a homemade elevator in the hangar. It will have a stop at the > top (living quarters over hangar) a stop in the middle (small storage room > over top of hangar bathroom) and a stop at the bottom (hangar level). > > I will power this with a 12 volt winch that comes with a wireless remote > control. > > Here's how I would like it to work. For normal operation, the remote "up" > or "down" button would be used to move the elevator cab. When the cab > reaches it's destination, a limit switch would cut off power to the winch. > > For accessing the storage over the hangar, a second switch would put the > elevator controls into "mode b." When in mode b the remote would then be > used to move the cab to and from the middle stop. > > Can you guys help me to understand how I can accomplish this using limit > switches and relay(s)? > > Thanks, > > Ken > ________________________________ Message 4 _____________________________________ Time: 01:55:25 PM PST US Subject: Re: AeroElectric-List: hangar elevator From: Charlie England On 3/6/2021 12:04 PM, Ken Ryan wrote: > Greetings, > > I am putting a homemade elevator in the hangar. It will have a stop at > the top (living quarters over hangar) a stop in the middle (small > storage room over top of hangar bathroom) and a stop at the bottom > (hangar level). > > I will power this with a 12 volt winch that comes with a wireless > remote control. > > Here's how I would like it to work. For normal operation, the remote > "up" or "down" button would be used to move the elevator cab. When the > cab reaches it's destination, a limit switch would cut off power to > the winch. > > For accessing the storage over the hangar, a second switch would put > the elevator controls into "mode b." When in mode b the remote would > then be used to move the cab to and from the middle stop. > > Can you guys help me to understand how I can accomplish this using > limit switches and relay(s)? > > Thanks, > > Ken Assuming observation of 'people protection' others mentioned, all you really need is limit switches at top & bottom. Easiest drawing I found with a quick search: https://www.hamradio.me/wp-content/uploads/2010/10/5_atbottom.gif The winch will have a DPDT *relay* to run the winch in/out. Replace the word 'switch' in the drawing with 'relay', and wire your limit switches in series with the winch motor, as shown. I'm assuming that you intend to use the winch control as designed, where you must hold the button in the desired direction to keep the winch running. If you want to stop in the middle, just release the button at the right point. You *could* make it work with a push&release circuit for the up/down buttons, but it would be a lot more complicated. If the middle level is only accessed from the ground floor, then you could add a 2nd upper limit switch, and use the 'mode B' switch to electrically replace the top floor switch with the mid level switch. None of the above incorporates any kind of 'call' feature. If the spousal unit is upstairs and you're not, you'd need some way to control from multiple locations. Maybe with manual buttons that can also drive the DPDT relay, but you need to be sure of a pecking order for the controls, similar to the pilot/copilot trim controls in an a/c. You can find diagrams (but don't try to use their tiny relays!) for that on the Ray Allen site. Charlie -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________ Message 5 _____________________________________ Time: 03:05:42 PM PST US From: Ken Ryan Subject: Re: AeroElectric-List: Re: hangar elevator Joe, I haven't picked out a specific winch. Most likely an inexpensive winch or hoist from Harbor Freight. I have had a homemade elevator for 15 years, so I'm comfortable hanging from a cable. My existing one just uses a standard control box with spring loaded buttons for "up" and "down." But I want to introduce the idea of limit switches so that you can't overshoot or undershoot the destination. On Sat, Mar 6, 2021 at 10:01 AM user9253 wrote: > > Does the winch have any built-in limit switches? Do you have a wiring > diagram for the winch? > Will people be riding in the elevator? If so, will there be some way to > keep the > elevator from falling if the cable breaks? There are mechanical designs > that > allow an elevator to move slowly, but stop it if it moves fast (falls). > > -------- > Joe Gores > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=500870#500870 > > ________________________________ Message 6 _____________________________________ Time: 04:43:06 PM PST US From: Sebastien Subject: Re: AeroElectric-List: Re: hangar elevator You should control it from an arduino. Place a microswitch at each place you want to stop, run the arduino to relays controlling the winch, and use your phone to tell the arduino which floor you want to go to. On Sat, Mar 6, 2021, 15:10 Ken Ryan wrote: > Joe, I haven't picked out a specific winch. Most likely an inexpensive > winch or hoist from Harbor Freight. I have had a homemade elevator for 15 > years, so I'm comfortable hanging from a cable. My existing one just uses a > standard control box with spring loaded buttons for "up" and "down." But I > want to introduce the idea of limit switches so that you can't overshoot or > undershoot the destination. > > On Sat, Mar 6, 2021 at 10:01 AM user9253 wrote: > >> >> Does the winch have any built-in limit switches? Do you have a wiring >> diagram for the winch? >> Will people be riding in the elevator? If so, will there be some way to >> keep the >> elevator from falling if the cable breaks? There are mechanical designs >> that >> allow an elevator to move slowly, but stop it if it moves fast (falls). >> >> -------- >> Joe Gores >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=500870#500870 >> >> >> >> >> >> >> ========== >> - >> Electric-List" rel="noreferrer" target="_blank"> >> http://www.matronics.com/Navigator?AeroElectric-List >> ========== >> FORUMS - >> eferrer" target="_blank">http://forums.matronics.com >> ========== >> WIKI - >> errer" target="_blank">http://wiki.matronics.com >> ========== >> b Site - >> -Matt Dralle, List Admin. >> rel="noreferrer" target="_blank">http://www.matronics.com/contribution >> ========== >> >> >> >> ________________________________ Message 7 _____________________________________ Time: 05:07:03 PM PST US From: Alec Myers Subject: Re: AeroElectric-List: Re: hangar elevator Putting people in a home-made elevator run from a harbour freight winch controlled by an Arduino running home-written code. Thats adventurous! On Mar 6, 2021, at 7:42 PM, Sebastien wrote: You should control it from an arduino. Place a microswitch at each place you want to stop, run the arduino to relays controlling the winch, and use your phone to tell the arduino which floor you want to go to. On Sat, Mar 6, 2021, 15:10 Ken Ryan wrote: Joe, I haven't picked out a specific winch. Most likely an inexpensive winch or hoist from Harbor Freight. I have had a homemade elevator for 15 years, so I'm comfortable hanging from a cable. My existing one just uses a standard control box with spring loaded buttons for "up" and "down." But I want to introduce the idea of limit switches so that you can't overshoot or undershoot the destination. On Sat, Mar 6, 2021 at 10:01 AM user9253 wrote: Does the winch have any built-in limit switches? Do you have a wiring diagram for the winch? Will people be riding in the elevator? If so, will there be some way to keep the elevator from falling if the cable breaks? There are mechanical designs that allow an elevator to move slowly, but stop it if it moves fast (falls). -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=500870#500870 ========== - Electric-List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List ========== FORUMS - eferrer" target="_blank">http://forums.matronics.com ========== WIKI - errer" target="_blank">http://wiki.matronics.com ========== b Site - -Matt Dralle, List Admin. rel="noreferrer" target="_blank">http://www.matronics.com/contribution ========== ________________________________ Message 8 _____________________________________ Time: 05:15:22 PM PST US From: Sebastien Subject: Re: AeroElectric-List: Re: hangar elevator As adventurous as putting people in a homemade airplane? On Sat, Mar 6, 2021, 17:12 Alec Myers wrote: > > Putting people in a home-made elevator run from a harbour freight winch > controlled by an Arduino running home-written code. That=99s advent urous! > > > On Mar 6, 2021, at 7:42 PM, Sebastien wrote: > > You should control it from an arduino. Place a microswitch at each place > you want to stop, run the arduino to relays controlling the winch, and us e > your phone to tell the arduino which floor you want to go to. > > On Sat, Mar 6, 2021, 15:10 Ken Ryan wrote: > Joe, I haven't picked out a specific winch. Most likely an inexpensive > winch or hoist from Harbor Freight. I have had a homemade elevator for 15 > years, so I'm comfortable hanging from a cable. My existing one just uses a > standard control box with spring loaded buttons for "up" and "down." But I > want to introduce the idea of limit switches so that you can't overshoot or > undershoot the destination. > > On Sat, Mar 6, 2021 at 10:01 AM user9253 wrote: > > Does the winch have any built-in limit switches? Do you have a wiring > diagram for the winch? > Will people be riding in the elevator? If so, will there be some way to > keep the > elevator from falling if the cable breaks? There are mechanical designs > that > allow an elevator to move slowly, but stop it if it moves fast (falls). > > -------- > Joe Gores > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=500870#500870 > > > ========== > - > Electric-List" rel="noreferrer" target="_blank"> > http://www.matronics.com/Navigator?AeroElectric-List > ========== > FORUMS - > eferrer" target="_blank">http://forums.matronics.com > ========== > WIKI - > errer" target="_blank">http://wiki.matronics.com > ========== > b Site - > -Matt Dralle, List Admin. > rel="noreferrer" target="_blank">http://www.matronics.com/contributio n > ========== > > =========== =========== =========== =========== =========== > > ________________________________ Message 9 _____________________________________ Time: 07:24:49 PM PST US From: Subject: RE: AeroElectric-List: EFIS Erratic Temp Readings Hello Update on my erratic temp readings, I shorted all the temp inputs and connected one shielded CHT temperature sensor and the problem went away. Have now replaced all CHT sensors with shielded sensors that I made up using K type thermocouple wire from Aircraft Spruce and shielded it with braid grounded at one end. Everything stable now. I have an MGL EFIS and had erratic EGT and CHT temp readings. EGT sensors seem to be grounded already and did not cause a problem once I shorted unused inputs. Thanks for all the help Mike From: owner-aeroelectric-list-server@matronics.com On Behalf Of Charlie England Sent: February 6, 2021 4:40 PM Subject: Re: AeroElectric-List: EFIS Erratic Temp Readings snipped Did you put shorts across them or were they simply disconnected? No, they were not shorted, simply disconnected. Will try with them shorted next week. I would never have thought of shorting them I did remove the alternator and ran the engine with no alternator and that made no difference, Readings were still erratic Thanks Mike Hi Mike, Can you remind us whether the engine is 'standard' mags & carb (or Bendix style injection), or if it has some combination of electronic ignition/fuel injection? 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