Shifter - Revision history

SpookySimon: /* Actuation */ bullets to words

2023-03-10T16:22:41Z

Actuation: bullets to words

Satiric: Add to drivetrain category, remove from other categories

2023-02-03T04:17:44Z

Add to drivetrain category, remove from other categories

SpookySimon: linking to drivetrain#gearing to fix dead-end

2022-04-01T19:24:35Z

linking to drivetrain#gearing to fix dead-end

Toaster at 23:56, 19 May 2020

2020-05-19T23:56:50Z

SpookySimon: adding categories

2020-05-19T13:44:09Z

adding categories

SpookySimon: moving from drvetrain

2020-05-19T13:41:00Z

moving from drvetrain

New page

=Actuation=
==Mechanical==
linkage or cable or both mimics actuation used on motorcycle +Cost [citation needed] +Simplicity [citation needed] +Robust [citation needed] -Most implementations mean driver has to take hand off steering wheel [citation needed] -Minimum shift time is longer [citation needed] -Maximum shift time is longer [citation needed] -Unable to convert to automatic 
==Electronic==
solenoid +OEM solutions available[http://www.pingelonline.com/prodcat/electric-speed-shifters.asp] (they can be expensive) +simplest upgrade to automatic I have no idea on shift times -cost -everyone knows electronics always go wrong
==Pneumatic==
pneumatic solenoid Which gas to use 
* N2
* compressed air
* CO2
Valving
+OEM solutions available [https://www.mpsracing.com/products/MPS/as01.asp]
+Actuation speeds [citation needed] -safety (compressed gas can be dangerous) -largest number of points of failures of all actuation methods [citation needed] -inherently limited number of shifts per tank -shift gas pressure can change when running low on gas 
=Automatic Shifting=
not going to touch on driver controls (paddles or whatever)

@@ Line 3: / Line 3: @@
 ==Actuation==
 ===Mechanical===
-linkage or cable or both<br />mimics actuation used on motorcycle<br />+Cost [citation needed]<br />+Simplicity [citation needed]<br />+Robust [citation needed]<br />-Most implementations mean driver has to take hand off steering wheel [citation needed]<br />-Minimum shift time is longer [citation needed]<br />-Maximum shift time is longer [citation needed]<br />-Unable to convert to automatic<br />
+Mechanical shift actuation uses a cable or linkage system to transmit driver input directly to the shifting mechanism of the engine. One of the primary benefits of a mechanical shifting mechanism is that it mimics the actuation used on motorcycles. This means integration with the engine requires limited design work. Additionally, mechanical linkage shifting mechanisms are often robust, which can make them reliable and long-lasting. They also tend to be relatively simple, which can help to keep costs down. Commonly, stick shifters are found with the clutch actuator built in, enabling the driver to clutch and shift in one move. This cannot be implemented on an electronic or pneumatic system without a more complex controls scheme.
 ===Electronic===
-solenoid<br />+OEM solutions available[http://www.pingelonline.com/prodcat/electric-speed-shifters.asp] (they can be expensive)<br />+simplest upgrade to automatic <br />I have no idea on shift times <br />-cost <br />-everyone knows electronics always go wrong
+Electronic solenoids can actuate the shifting mechanism, allowing for quick and precise shifts without the need for mechanical linkage or cable. These solenoids can be mounted directly next to the shift lever of the engine. OEM solutions are available, which can make it easier for teams to integrate them into their vehicles. For example, Pingel offers a range of electric speed shifters that can be used for FSAE vehicles. However, it should be noted that these solutions can be expensive, which may be a limiting factor for some teams. Another advantage of solenoid shifting mechanisms is that they are often the simplest upgrade to automatic shifting due to the lack of high pressure gas packaging, storage, and routing. A custom solution is not hard to design as well, with the only inputs to the solenoid being LV power and control signals, which FSAE cars will already have.
 ===Pneumatic===
-pneumatic solenoid<br />Which gas to use<br />
+Pneumatic shifting systems use a pressurized gas powered solenoid to actuate the shift mechanism. Like electronic shifting, the actuator can be packaged very close to the engine's shift lever. Additionally, OEM solutions such as those from MPS Racing are available. Pneumatic systems are renown for their shift speeds.
-* N2
-* compressed air
+The pneumatic solenoid itself can be much smaller than a comparable electronic solenoid but the gas tank will likely be much, much, larger than either. The gas can be compressed N2, CO2, or air, with limited differentiation on performance, and will likely be driven by availability. The tank is subject to specific rules about packaging and driver protection.
-* CO2
-Valving
+Unlike electronic solenoids, gas actuated systems have an inherently limited number of shifts dependent on the quantity and pressure of gas in the tank, activation pressure, and how much gas is discharged per shift. As the level of gas in the tank becomes very low, shifting may become difficult or impossible if the required shift pressure is lost. Anecdotal accounts of a car running out of air during a race are rare. Frequently the investment into a larger tank, or higher pressure is low for a team that is already running a pneumatic system.
-+OEM solutions available [https://www.mpsracing.com/products/MPS/as01.asp]
-+Actuation speeds [citation needed]<br />-safety (compressed gas can be dangerous) <br />-largest number of points of failures of all actuation methods [citation needed] <br />-inherently limited number of shifts per tank <br />-shift gas pressure can change when running low on gas <br />
+The pneumatic cylinders and gas tanks are very common industry components and are often inexpensive, and are extremely reliable. The routing and regulators are the most frequent fail points, and a double stage regulator is recommended. Push-to-connect pneumatic fittings can reduce failure modes in the routing and enable inexperienced teams or team members to easily service the system without fear of damage.
 ==Automatic Shifting==
 not going to touch on driver controls (paddles or whatever)
 [[Category: Drivetrain]]

← Older revision		Revision as of 04:17, 3 February 2023
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	not going to touch on driver controls (paddles or whatever)		not going to touch on driver controls (paddles or whatever)

−	[[Category: ~~Internal Combustion]]~~	+	[[Category: Drivetrain]]
−	~~[[Category: Electric Vehicle~~]]

← Older revision		Revision as of 19:24, 1 April 2022
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		+	A shifter allows the driver to shift [[Drivetrain#Gearing\|gears]].
		+
	==Actuation==		==Actuation==
	===Mechanical===		===Mechanical===

@@ Line 1: / Line 1: @@
-=Actuation=
+==Actuation==
-==Mechanical==
+===Mechanical===
 linkage or cable or both<br />mimics actuation used on motorcycle<br />+Cost [citation needed]<br />+Simplicity [citation needed]<br />+Robust [citation needed]<br />-Most implementations mean driver has to take hand off steering wheel [citation needed]<br />-Minimum shift time is longer [citation needed]<br />-Maximum shift time is longer [citation needed]<br />-Unable to convert to automatic<br />
-==Electronic==
+===Electronic===
 solenoid<br />+OEM solutions available[http://www.pingelonline.com/prodcat/electric-speed-shifters.asp] (they can be expensive)<br />+simplest upgrade to automatic <br />I have no idea on shift times <br />-cost <br />-everyone knows electronics always go wrong
-==Pneumatic==
+===Pneumatic===
 pneumatic solenoid<br />Which gas to use<br />
 * N2
@@ Line 12: / Line 12: @@
 +OEM solutions available [https://www.mpsracing.com/products/MPS/as01.asp]
 +Actuation speeds [citation needed]<br />-safety (compressed gas can be dangerous) <br />-largest number of points of failures of all actuation methods [citation needed] <br />-inherently limited number of shifts per tank <br />-shift gas pressure can change when running low on gas <br />
-=Automatic Shifting=
+==Automatic Shifting==
 not going to touch on driver controls (paddles or whatever)
 [[Category: Internal Combustion]]
 [[Category: Electric Vehicle]]

← Older revision		Revision as of 13:44, 19 May 2020
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	=Automatic Shifting=		=Automatic Shifting=
	not going to touch on driver controls (paddles or whatever)		not going to touch on driver controls (paddles or whatever)
		+
		+	[[Category: Internal Combustion]]
		+	[[Category: Electric Vehicle]]