Tensioner - Revision history

SpookySimon: /* Stepped */ words

2023-03-10T14:35:03Z

Stepped: words

SpookySimon: /* Tensioning Systems */

2023-03-10T14:31:30Z

Tensioning Systems

SpookySimon: /* Turnbuckle */ cleaning up

2023-03-06T15:50:47Z

Turnbuckle: cleaning up

SpookySimon: toothed ->stepped

2023-03-06T15:45:07Z

toothed ->stepped

SpookySimon: /* Turnbuckle */ words

2023-03-06T15:43:06Z

Turnbuckle: words

SpookySimon: more words

2023-03-06T15:02:51Z

more words

SpookySimon: /* Tensioning Systems */ cleaning up notes

2023-03-06T14:40:30Z

Tensioning Systems: cleaning up notes

SpookySimon: /* Idler */

2023-03-06T14:34:29Z

Idler

SpookySimon: /* Tensioning Systems */

2023-03-06T00:28:13Z

Tensioning Systems

SpookySimon at 00:09, 6 March 2023

2023-03-06T00:09:10Z

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 ==Stepped==
-* See wollongong 2012
+A stepped chain tensioner relies on two parts: a static mount attached to the frame of the car and the driven sprocket mount that is fastened only to the first mount. The interface between the two mounts has steps similar to a stepped clamp or teeth that interlace. The two pieces are kept together by a threaded fastener used to keep the steps or teeth engaged.
 ==Diagrams==

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 A '''tensioner''' is a mechanism that necessary to a belt or [[Chain Drive|chain drive]] to ensure long term proper function. Without correct tension, the drive system may fail catastrophically resulting in damage to other components, potentially causing the vehicle to come to a sudden stop or endangering the driver or bystanders.
 =Tensioning Systems=
-There are a few ways to create tension in a belt or chain drive system. You can increase the distance between the drive and driven sprocket such as in the shimmed or eccentric systems. Another method is to lengthen the path of the chain as in the idler method.
+There are a few ways to create tension in a belt or chain drive system. You can increase the distance between the drive and driven sprocket such as in the shimmed or eccentric systems. Another method is to lengthen the path of the chain without moving the two sprockets as in the idler method.
 These can be further divided into passive systems that can automatically adjust chain tension, and manual adjustment tensioning systems that require servicing by the team to adjust tension

@@ Line 28: / Line 28: @@
 ==Turnbuckle==
-Turnbuckle type tensioners are often implemented on a swing arm design that is often chosen for it's infinite adjustability, and  This allows for precise and customized tensioning of the chain or belt.
+Turnbuckle type tensioners offer several advantages in tensioning chain or belt drives. The design allows for infinite adjustability over a large range, reducing the required upfront design work, making them easy to implement and integrate into simple differential mounting systems. However, this design also has several disadvantages in terms of play, wear, packaging, and rigidity (citation needed). Turnbuckle type tensioners are often implemented on a swing arm design.
 Turnbuckles can be implemented as a differential screw which would increase rigidity and precision, while reducing the range of adjustment<ref>https://en.wikipedia.org/wiki/Differential_screw</ref><ref>https://www.halfbakery.com/idea/Differential_20Turnbuckle</ref>.

@@ Line 36: / Line 36: @@
 Turnbuckles can be implemented as a differential screw which would increase rigidity and precision, while reducing the range of adjustment<ref>https://en.wikipedia.org/wiki/Differential_screw</ref><ref>https://www.halfbakery.com/idea/Differential_20Turnbuckle</ref>.
-==Toothed==
+==Stepped==
 * See wollongong 2012
@@ Line 47: / Line 47: @@
 Footballchaintensioner.png|Offset Footballs
 </gallery>
-''need diagram of toothed style chain tensioner''
+''need diagram of stepped style chain tensioner''
 ==Examples==
 <gallery class="center" heights=300px widths=300px>
@@ Line 53: / Line 53: @@
 Guide_chain_tensioner_pic.png | Tennessee Tech's guide chain tensioner in 2019
 Eccentric chain tensioner pic .jpg|Michigan State's eccentric chain tensioner in 2019
-Toothed_chain_tensioner_pic.webp| Wollongong's toothed chain tensioner in 2012
+Toothed_chain_tensioner_pic.webp| Wollongong's stepped chain tensioner in 2012
 </gallery>
 ''need example images of football style, idler style''

@@ Line 28: / Line 28: @@
 ==Turnbuckle==
-Often implemented on a swing arm type design.
+Turnbuckle type tensioners are often implemented on a swing arm design that is often chosen for it's infinite adjustability, and  This allows for precise and customized tensioning of the chain or belt.
--play<br />-wear<br />-packaging<br />-rigidity[citation needed]<br />+infinite adjustability<br />can be done as a differential screw <ref>https://en.wikipedia.org/wiki/Differential_screw</ref><ref>https://www.halfbakery.com/idea/Differential_20Turnbuckle</ref>
 ==Toothed==

@@ Line 1: / Line 1: @@
-A '''tensioner''' is a mechanism that necessary to a belt or [[Chain Drive|chain drive]] to ensure long term proper function. Without correct tension, the drive system may fail catastrophically.
+A '''tensioner''' is a mechanism that necessary to a belt or [[Chain Drive|chain drive]] to ensure long term proper function. Without correct tension, the drive system may fail catastrophically resulting in damage to other components, potentially causing the vehicle to come to a sudden stop or endangering the driver or bystanders.
 =Tensioning Systems=
 There are a few ways to create tension in a belt or chain drive system. You can increase the distance between the drive and driven sprocket such as in the shimmed or eccentric systems. Another method is to lengthen the path of the chain as in the idler method.
 ==Shims==
 Shims are one of the simplest methods of tensioning the chain. A shimmed system only requires a differential mount that has a vertical split that can be bolted together. By inserting shims between the front and rear halves of the differential mount(s), the differential can be moved further away. The shims can be made of any stiff material. Anecdotally these are frowned upon by design judges, but your mileage may vary.
-If correctly designed, shims can be the stiffest option for tensioning the chain as the entire system will be held in compression, there are no threads, and no moving parts. The shimmed design also presents an incredibly cheap option.
+If correctly designed, shims can be the stiffest option for tensioning the chain as the entire system will be held in compression, there are no threads to keep clean, and no moving parts. The shimmed design also presents an incredibly cheap option.
 ==Guide==
-Chain guides use a durable low friction material to squeeze the chain into tension. This is most commonly used for timing chains (kept lubricated inside the engine) and sometimes on bicycle<ref>https://www.specialized.com/us/en/stumpjumper-fsr-comp-evo/p/49715</ref>.
+Chain guides use a durable low friction material to squeeze the chain into tension. This is most commonly used for timing chains (kept lubricated inside the engine) and sometimes on bicycles<ref>https://www.specialized.com/us/en/stumpjumper-fsr-comp-evo/p/49715</ref>.
 ==Idler==
 Another sprocket or pulley is used to add tension to the chain or belt. It does not add any torque to the system and freely spins. A common implementation is the secondary sprocket on a bicycle derailleur.
-An idler that is held against the chain by a spring is a passive tensioner and should not need servicing. Due to the passive nature, fine control is difficult. Idlers can also be held in a fixed position with a swing arm held captive in a slot, or pinned to a fixed angle. These will need servicing as the chain lengthens.
+An idler that is held against the chain by a spring is a passive tensioner and should not need servicing. Idlers can also be held in a fixed position with a swing arm held captive in a slot, or pinned to a fixed angle. These will need servicing as the chain lengthens.
 ==Eccentric==

← Older revision		Revision as of 14:40, 6 March 2023
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	There are a few ways to create tension in a belt or chain drive system. You can increase the distance between the drive and driven sprocket such as in the shimmed or eccentric systems. Another method is to lengthen the path of the chain as in the idler method.		There are a few ways to create tension in a belt or chain drive system. You can increase the distance between the drive and driven sprocket such as in the shimmed or eccentric systems. Another method is to lengthen the path of the chain as in the idler method.

−	~~''need slotted, hydraulic, cam, pivoting/dual pivot,~~
	==Shims==		==Shims==

@@ Line 3: / Line 3: @@
 There are a few ways to create tension in a belt or chain drive system. You can increase the distance between the drive and driven sprocket such as in the shimmed or eccentric systems. Another method is to lengthen the path of the chain as in the idler method.
-''need slotted and maybe hydraulic?''
+''need slotted, hydraulic, cam, pivoting/dual pivot,
 ==Shims==