Precision Pendulum Assembly: Mechanical assembly - Revision history

Ist12916: /* Maintenance */

2022-03-17T11:58:46Z

Maintenance

Ist12916: /* Wall mount assembly */

2022-01-31T15:55:05Z

Wall mount assembly

Ist12916: /* Mechanical assembly */

2022-01-12T09:13:51Z

Mechanical assembly

Ist12916: /* Mechanical assembly */

2022-01-12T09:13:23Z

Mechanical assembly

Ist12916: /* Mechanical assembly */

2022-01-12T07:44:39Z

Mechanical assembly

Ist428984: /* Maintenance */

2021-08-26T14:09:14Z

Maintenance

Ist428984: /* Maintenance */

2021-08-25T13:57:36Z

Maintenance

Ist428984 at 13:11, 4 July 2021

2021-07-04T13:11:16Z

Ist428984 at 13:07, 4 July 2021

2021-07-04T13:07:51Z

Ist428984 at 12:52, 4 July 2021

2021-07-04T12:52:08Z

← Older revision		Revision as of 11:58, 17 March 2022
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	Please let it have two turns on the motor's shaft. Although the string position is not critical we have found that in some situations is preferable to have it between the shovel and the motor. Nevertheless never use a high tension on the cable as it can jeopardize the fast movement of the shovel. Usually 2-5 N should be enough to avoid slipping in the shaft.		Please let it have two turns on the motor's shaft. Although the string position is not critical we have found that in some situations is preferable to have it between the shovel and the motor. Nevertheless never use a high tension on the cable as it can jeopardize the fast movement of the shovel. Usually 2-5 N should be enough to avoid slipping in the shaft.
		+
		+	In case the cable breaks, the photo shows how to splice the broken cable.
		+	[[File:Cable splice.gif\|\|thumb\|How to splice the cable.\|right\|border\|236px]]

← Older revision		Revision as of 15:55, 31 January 2022
Line 36:		Line 36:

	The main aspects to retain on the fixture is (i) to have all structure completely tied-up and firmly secured, (ii) the launcher perfectly horizontal and (iii) aligned with the natural plane of oscillations (please refer to previous sub-section "Order of assembly").		The main aspects to retain on the fixture is (i) to have all structure completely tied-up and firmly secured, (ii) the launcher perfectly horizontal and (iii) aligned with the natural plane of oscillations (please refer to previous sub-section "Order of assembly").
		+
		+	Main issue detected so far: before drilling any hole for the fixture check the exact position regarding to the pendulum vertical line and photo-gate alignment as in the previous picture (laser is ''not'' to be located on the pendulum central position!).

	==Maintenance==		==Maintenance==

@@ Line 4: / Line 4: @@
 There are several versions of the setup, the main design do not require any fitting on a wall whereas other versions require fixtures on a masonry wall.
-[https://www.youtube.com/playlist?list=PLUn1oaHU5u-3vCaAmP9-Zt3w6jB-rIjx5 In this video playlist] is detailed some main procedures on a wall assembly.
+[https://www.youtube.com/playlist?list=PLUn1oaHU5u-3vCaAmP9-Zt3w6jB-rIjx5 In this video playlist] is detailed some main procedures for the pendulum assembly.
 ==Order of assembly and filling with sand==

@@ Line 4: / Line 4: @@
 There are several versions of the setup, the main design do not require any fitting on a wall whereas other versions require fixtures on a masonry wall.
-[[https://www.youtube.com/playlist?list=PLUn1oaHU5u-3vCaAmP9-Zt3w6jB-rIjx5 In this video playlist ]] is detailed some main procedures on a wall assembly.
+[https://www.youtube.com/playlist?list=PLUn1oaHU5u-3vCaAmP9-Zt3w6jB-rIjx5 In this video playlist] is detailed some main procedures on a wall assembly.
 ==Order of assembly and filling with sand==

← Older revision		Revision as of 07:44, 12 January 2022
Line 2:		Line 2:

	In this section is described the procedure to assemble the tripod metallic structure also known as ''Primary Pendulums''.		In this section is described the procedure to assemble the tripod metallic structure also known as ''Primary Pendulums''.
		+	There are several versions of the setup, the main design do not require any fitting on a wall whereas other versions require fixtures on a masonry wall.
		+
		+	[[https://www.youtube.com/playlist?list=PLUn1oaHU5u-3vCaAmP9-Zt3w6jB-rIjx5 In this video playlist ]] is detailed some main procedures on a wall assembly.

	==Order of assembly and filling with sand==		==Order of assembly and filling with sand==

@@ Line 40: / Line 40: @@
 Please let it have two turns on the motor's shaft. Although the string position is not critical we have found that in some situations is preferable to have it between the shovel and the motor. Nevertheless never use a high tension on the cable as it can jeopardize the fast movement of the shovel. Usually 2-5 N should be enough to avoid slipping in the shaft.
 {|
-|[[Precision Pendulum Assembly: Apparatus description |Previous Page (Apparatus description)]]
+[[Precision Pendulum Assembly: Apparatus description |Previous Page (Apparatus description)]]
 |}
 {|
-|[[Precision Pendulum Assembly: Electrical interfaces|Next Page (Electrical interfaces)]]
+[[Precision Pendulum Assembly: Electrical interfaces|Next Page (Electrical interfaces)]]
 |}

@@ Line 42: / Line 42: @@
 {|
-|[[Precision Pendulum Assembly: Apparatus description |Previous page (Apparatus description)]]
+|[[Precision Pendulum Assembly: Apparatus description |Previous Page (Apparatus description)]]
 |}
 {|

@@ Line 41: / Line 41: @@
 Please let it have two turns on the motor's shaft. Although the string position is not critical we have found that in some situations is preferable to have it between the shovel and the motor. Nevertheless never use a high tension on the cable as it can jeopardize the fast movement of the shovel. Usually 2-5 N should be enough to avoid slipping in the shaft.
-[[Precision Pendulum Assembly: Apparatus description | Previous page (Apparatus description)]]
+{|
-[[Precision Pendulum Assembly: Electrical interfaces| Next Page (Electrical interfaces)]]
+|[[Precision Pendulum Assembly: Apparatus description |Previous page (Apparatus description)]]
 ==Links==
-*[[Montagem do Pêndulo de Precisão: Montagem mecânica | Portuguese Version (Versão em português)]]
+*[[Montagem do Pêndulo de Precisão: Montagem mecânica |Portuguese Version (Versão em português)]]
-*[[Conjunto de péndulo de precisión: ensamble mecanico | Spanish Version (Versión en español)]]
+*[[Conjunto de péndulo de precisión: ensamble mecanico |Spanish Version (Versión en español)]]

@@ Line 35: / Line 35: @@
 ==Maintenance==
-The main components of the launcher should not need any maintenance; do not lubricate any part except the rail in case it gets sticky. For that end it should be disassembled, clean with a soft tissue and alcohol and lubricated lightly with a very small amount of grease on the linear bearing or vaseline. Check if every rolling sphere is working properly.
+The main components of the launcher should not need any maintenance; do not lubricate any part except the rail in case it gets sticky. For that end it should be disassembled, clean with a soft tissue and alcohol and lubricated lightly with a very small amount of grease or vaseline on the linear bearing. Check if every rolling sphere is working properly.
-If the shovel's cable (over the rail) broke it has to be substituted by a steel cable with a track capability of 250 N, typically found as fish lines of 25m coils. If the location is in a hard climate were corrosion show-up it can be replaced by an equivalent dynema cable.
+If the shovel's cable (over the rail) broke it has to be substituted by a steel cable with a track capability of 250 N, typically found as fish lines of 25m coils. If the location is in a hard climate were corrosion show-up it can be replaced by an equivalent dyneema cable.
 Please let it have two turns on the motor's shaft. Although the string position is not critical we have found that in some situations is preferable to have it between the shovel and the motor. Nevertheless never use a high tension on the cable as it can jeopardize the fast movement of the shovel. Usually 2-5 N should be enough to avoid slipping in the shaft.