Changes for page LSS Mechanical

Last modified by Eric Nantel on 2024/07/12 11:24
From version < 35.1 >
edited by Eric Nantel
on 2019/02/15 10:55
To version < 51.1 >
edited by Eric Nantel
on 2019/02/20 14:52
< >
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Summary

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1 1  (% class="wikigeneratedid" id="HTableofContents" %)
2 -**Table of Contents**
2 +**Page Contents**
3 3  
4 4  {{toc depth="3"/}}
5 5  
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6 6  = LSS Features =
7 7  
8 8  |(% colspan="2" style="width:350px" %)(((
9 -== Driving Horn ==
10 -)))
11 -|(% style="width:350px" %)[[image:LSS - driven horn.png]]|The aluminum driving horn is connected to the output shaft of the final gear in the gear train which is located within the servo. This output shaft has a specific cross section called a “spline” (specifically the “male” version of the spline), and the driving horn has the mating “female” spline. The details of the spline are found below. The driving horn is held in place using an M3 x 8mm pan head machine screw and has the SES standard mounting pattern described below.
12 -|(% colspan="2" style="width:350px" %)(((
13 13  == Spline ==
14 14  )))
15 15  |(% style="width:350px" %)[[image:LSS - Splines.png||width="400"]]|(((
16 -The spline allows the driven horn to be connected to the output shaft so that it rotates with the shaft. The spline selected is used by other servo manufacturers and as such there are a variety of accessories / horns which are compatible and can be installed on the servo. Alternatives to using the Lynxmotion driving horn include a wheel, a pulley or sprocket, a tubing connector, specific RC horns and more. Note that there are many different spline cross sections, and in order to ensure the a horn can fit onto the output shaft of the servo, it must have the matching / identical spline.
12 +The spline allows the driving horn to be connected to the output shaft so that it rotates with the shaft. The 24 tooth spline selected is used by other servo manufacturers (for example Hitec's HS-422 and HS-645MG RC servos) and as such there are a variety of accessories / horns which are compatible and can be installed on the servo. Alternatives to using the Lynxmotion driving horn include a wheel, a pulley or sprocket, a tubing connector, specific RC horns and more. Note that there are many different spline cross sections, and in order to ensure the a horn can fit onto the output shaft of the servo, it must have the matching / identical spline.
17 17  
18 18  Although the final gear which (located within the servo) which is connected to the output spline is supported by two radial ball bearings, the output spline is intended to withstand torque as opposed to radial or axial loads.
19 -)))
20 -|(% colspan="2" style="width:350px" %)(((
21 -== Idler Horn ==
22 -)))
23 -|(% style="width:350px" %)[[image:LSS - idler.png||width="400"]]|(((
24 -The idler horn is not connected to the output spline and is therefore not driven. It is intended to act as a solid free-spinning connection point and can be installed in one of three locations on the servo. Installing the idler horn on the underside of the servo (as shown in the image), in line with the driving output shaft allows a Lynxmotion C-bracket to be used.
25 25  
26 -The idler horn sub-assembly consists of a spacer, a 3mm ID x 8mm OD flanged ball bearing (Lynxmotion standard) and the idler horn itself. The idler horn is held in place using an M3 x 10mm pan head machine screw. Documentation in this wiki referring to the "idler horn" normally refers to the idler horn assembly.
16 +Learn more about [[SES - Gearing & Horns>>doc:Servo Erector Set (SES) Building System.SES - Parts.SES - Gearing Information.WebHome]]
27 27  )))
28 28  |(% colspan="2" style="width:350px" %)(((
29 29  == Case ==
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66 66  |[[image:LSS-Bottom-Inserts(800px).png||width="400"]]|The bottom case of the servo includes 16x 2-56 threaded inserts plus two M3 threaded inserts located at the center of the SES pattern.
67 67  |[[image:LSS-Screws-Distance.png]]|IMPORTANT NOTE: ONLY USE THE 2-56 x 14” SCREWS PROVIDED. LONGER SCREWS CAN AND WILL CAUSE DAMAGE TO THE SERVO.
68 68  
69 -= SES Pattern =
59 += Dimensions =
70 70  
71 -The SES mounting pattern is based on two holes which are used for mounting objects to a Hitec standard servo horn such as the Hitec HS-422. The mounting pattern involves:
72 -
73 -|(% style="width:350px" %)[[image:SES-V2 - SES Pattern (4).png||width="200"]]|(((
74 -* 8mm diameter center hole
75 -* Four equally spaced holes located on a 0.656” diameter circle. Sometimes these four holes are threaded 2-56 (imperial), sometimes they are not
76 -* Outer diameter is 1” (2.54cm)
77 -)))
78 -|[[image:SES-V2 - SES Pattern (8).png||width="200"]]|Newer brackets have four additional holes (for a total of eight holes) spaced at 45 degrees to allow for easy mounting.
79 -
80 -
81 -
61 +|(% style="width:350px" %)[[image:LSS-Front-Dimensions.png]]|
62 +| |
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