Engine balance: Revision history

25 October 2024

• curprev 01:1401:14, 25 October 2024 2601:484:8081:2df0:8cd0:2a68:567f:f6c3 talk 36,710 bytes +11 →Flat engines: Minor grammatical change to make it easier to understand why imbalances are present. undo

27 April 2024

• curprev 12:1812:18, 27 April 2024 ArturoCL123 talk contribs m 36,699 bytes 0 Name of Dalby was incorrect. W.E. Dalby was credited as W.B. Dalby undo

24 September 2023

• curprev 06:1706:17, 24 September 2023 Bryllig talk contribs 36,699 bytes −2,645 Trimmed and restructured + extra diagram undo

18 September 2023

• curprev 00:1500:15, 18 September 2023 Bryllig talk contribs m 39,344 bytes +64 No edit summary undo

17 September 2023

• curprev 23:4323:43, 17 September 2023 Bryllig talk contribs 39,280 bytes +826 General editing, diagram replaced by animation more relevant to context (different versions available - see Wiki Commons) undo

23 February 2023

• curprev 15:4315:43, 23 February 2023 ActivelyDisinterested talk contribs 38,454 bytes +4 →References: Resolving Category:Harv and Sfn no-target errors. Changed cite to work with SFRs undo
• curprev 15:4115:41, 23 February 2023 ActivelyDisinterested talk contribs 38,450 bytes −29 →References: Clearing cs1 error undo
• curprev 15:4015:40, 23 February 2023 ActivelyDisinterested talk contribs 38,479 bytes +44 More inline refs needed, there's many unreferenced sections undo

22 January 2023

• curprev 11:1811:18, 22 January 2023 Stepho-wrs talk contribs 38,435 bytes −140 Partial revert. Simpler to thing of a pair of pistons vs another pair rather then trying to image all 4. Also, see MOS:AMP for "and" vs "&". undo
• curprev 11:0211:02, 22 January 2023 Stepho-wrs talk contribs 38,575 bytes +38 Revert good faith edit. Boxer engines do not have pistons moving upwards/downwards. V engines also complicated it (pistons have a sideways movement as well compared to pistons in the other bank). Deltic engines really screw this idea up. undo Tag: Undo
• curprev 08:4908:49, 22 January 2023 Blacki999 talk contribs m 38,537 bytes +176 I tried to clarify this to: In the case of an inline-four engine (with a conventional 180-degree crankshaft), the upwards inertia force of pistons (1&4) or (2&3) near top dead centre (TDC) is greater than the downwards inertia force of the opposite pair of pistons near bottom dead centre (BDC). The engine sees a net upward force. Therefore, despite an equal number of pistons moving in opposite directions at any given time (creating perfect primary balance), nonethe less they are not accelerating undo Tags: Visual edit Mobile edit Mobile web edit
• curprev 07:4507:45, 22 January 2023 Blacki999 talk contribs m 38,361 bytes −38 I changed “Using the example of an inline engine (where the pistons are vertical), the main reciprocating motions are:” to “in a reciprocating piston engine, the main reciprocating motions are:” I considered instead “Using the example of an inline engine (where the cylinders are parallel), the main reciprocating motions are:” but flat, as well as inline engines have parallel cylinders, The paragraph is true of all piston engines. undo Tags: Reverted Visual edit Mobile edit Mobile web edit

25 December 2022

• curprev 21:2721:27, 25 December 2022 Kevin Kell talk contribs 38,399 bytes −4 →Cause undo

24 August 2022

• curprev 03:3303:33, 24 August 2022 JCW-CleanerBot talk contribs m 38,403 bytes −15 task, replaced: 3Th → 3th undo Tag: AWB

10 May 2022

• curprev 02:3102:31, 10 May 2022 AnomieBOT talk contribs m 38,418 bytes +14 Dating maintenance tags: {{Citation needed}} undo
• curprev 00:3100:31, 10 May 2022 NoahSPARC talk contribs 38,404 bytes +46 →Cause: Cleanups. undo

2 April 2022

• curprev 22:4622:46, 2 April 2022 Stepho-wrs talk contribs 38,358 bytes +22 →V engines: Metric first, as per WP:UNITS and WP:CARUNITS. undo
• curprev 21:2021:20, 2 April 2022 CplDHicks2 talk contribs m 38,336 bytes +64 fixed wikilink to Chevrolet 90° V6 engine, disambiguated displacements (4.3 L Chevy V6 had 30° offset crank pins) undo

15 March 2022

• curprev 10:5810:58, 15 March 2022 MrsSnoozyTurtle talk contribs 38,272 bytes −15,240 Removing unsourced text and overly technical section undo

11 March 2022

• curprev 19:5519:55, 11 March 2022 Bryllig talk contribs 53,512 bytes +331 No edit summary undo

5 March 2022

• curprev 05:2105:21, 5 March 2022 MrsSnoozyTurtle talk contribs 53,181 bytes +80 →Mathematical analysis undo

7 February 2022

• curprev 14:4814:48, 7 February 2022 Citation bot talk contribs 53,101 bytes +131 Add: bibcode, volume, year, journal. | Use this bot. Report bugs. | Suggested by AManWithNoPlan | #UCB_webform 120/1013 undo

26 January 2022

• curprev 21:1621:16, 26 January 2022 BattyBot talk contribs m 52,970 bytes −9 Fixed CS1 errors: extra text: volume and general fixes undo Tag: AWB

18 January 2022

• curprev 07:5207:52, 18 January 2022 47.227.84.202 talk 52,979 bytes −6 →Reciprocating imbalance undo

21 December 2021

• curprev 22:3822:38, 21 December 2021 Rlink2 talk contribs m 52,985 bytes +130 →Primary imbalance {{anchor|Primary vibration}}: Fixing archives for YouTube videos (WP:Link_Rot, WP:CEFC#Pre-emptive_archiving, phab:T294880) undo Tag: AWB

19 December 2021

• curprev 11:0811:08, 19 December 2021 50.242.115.129 talk 52,855 bytes −1 →Piston thrust from connecting rod angularity undo
• curprev 11:0811:08, 19 December 2021 50.242.115.129 talk 52,856 bytes +3 →Piston thrust from connecting rod angularity undo
• curprev 11:0511:05, 19 December 2021 50.242.115.129 talk 52,853 bytes −1 →Piston thrust from connecting rod angularity: "the angle" is singular undo

15 December 2021

• curprev 09:3609:36, 15 December 2021 Stepho-wrs talk contribs 52,854 bytes +62 Replaced mix of British and American English with purely British English, as per WP:ENGVAR. undo

14 December 2021

• curprev 17:5317:53, 14 December 2021 50.78.143.141 talk 52,792 bytes 0 →Cause undo

30 November 2021

• curprev 04:3804:38, 30 November 2021 Bryllig talk contribs 52,792 bytes +337 →Torsional imbalance: - is torsional vibration a form of imbalance? Does this belong here at all? undo

27 November 2021

• curprev 00:1600:16, 27 November 2021 Qwright10 talk contribs m 52,455 bytes −2 Fixed linked article undo Tags: Mobile edit Mobile app edit iOS app edit
• curprev 00:1100:11, 27 November 2021 Qwright10 talk contribs m 52,457 bytes +78 No edit summary undo Tags: Mobile edit Mobile app edit iOS app edit

22 November 2021

• curprev 22:0922:09, 22 November 2021 WikiCleanerBot talk contribs m 52,379 bytes −32 v2.04b - Bot T20 CW#61 - Fix errors for CW project (Reference before punctuation - Internal link written as an external link - Empty list item) undo Tag: WPCleaner

17 November 2021

• curprev 01:0001:00, 17 November 2021 Bryllig talk contribs m 52,411 bytes +68 No edit summary undo
• curprev 00:2500:25, 17 November 2021 Bryllig talk contribs m 52,343 bytes +538 Terminology, logic, clarity (I hope) undo

16 September 2021

• curprev 18:0918:09, 16 September 2021 84.65.224.212 talk 51,805 bytes +85 Fixed typo and derivation error undo

14 September 2021

• curprev 13:4013:40, 14 September 2021 84.21.34.147 talk 51,720 bytes −3 →Cause of imbalance undo Tag: Manual revert
• curprev 13:3913:39, 14 September 2021 84.21.34.147 talk 51,723 bytes +3 →Cause of imbalance undo Tag: Reverted

11 August 2021

• curprev 18:5018:50, 11 August 2021 Derekburgess talk contribs 51,720 bytes +4,378 No edit summary undo

5 August 2021

• curprev 14:3714:37, 5 August 2021 Derekburgess talk contribs m 47,342 bytes −8 →One cylinder: Fix algebra error undo

20 July 2021

• curprev 09:4109:41, 20 July 2021 John of Reading talk contribs m 47,350 bytes −11 Typo/general fixes, replaced: An perfectly → A perfectly, ’s → 's undo Tag: AWB

16 July 2021

• curprev 18:5718:57, 16 July 2021 Wictorlund talk contribs 47,361 bytes +1,291 →One cylinder undo Tag: Visual edit

13 June 2021

• curprev 22:4222:42, 13 June 2021 60.225.156.111 talk 46,070 bytes 0 →One cylinder undo
• curprev 22:4122:41, 13 June 2021 60.225.156.111 talk 46,070 bytes −2 →Mathematical analysis: " is equivalent" => "corresponds" (it is not is equivalent) undo
• curprev 22:3822:38, 13 June 2021 60.225.156.111 talk 46,072 bytes −2 →One cylinder: 'cylinder' corrected to 'piston' undo
• curprev 08:4408:44, 13 June 2021 Derekburgess talk contribs m 46,074 bytes 0 →One cylinder: Tidy result formula undo

11 June 2021

• curprev 10:3010:30, 11 June 2021 Derekburgess talk contribs m 46,074 bytes +1 →One cylinder undo
• curprev 08:4908:49, 11 June 2021 Derekburgess talk contribs m 46,073 bytes −21 →One cylinder: Correct diagram label undo

10 June 2021

• curprev 16:1916:19, 10 June 2021 Derekburgess talk contribs m 46,094 bytes +1 →Five cylinder undo