Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /customers/c/d/b/jvmv2.se/httpd.www/daniel/forum/includes/entry.inc.php on line 252 Warning: Cannot modify header information - headers already sent by (output started at /customers/c/d/b/jvmv2.se/httpd.www/daniel/forum/includes/entry.inc.php:252) in /customers/c/d/b/jvmv2.se/httpd.www/daniel/forum/index.php on line 217 Warning: Cannot modify header information - headers already sent by (output started at /customers/c/d/b/jvmv2.se/httpd.www/daniel/forum/includes/entry.inc.php:252) in /customers/c/d/b/jvmv2.se/httpd.www/daniel/forum/index.php on line 218 SJ ellok F - 2008 - 2023 års Järnvägshistoriska forum

SJ ellok F (Järnväg allmänt)

av Mats Björkelund, Monday, November 27, 2023, 16:34 (527 dagar sedan)

SJs ellok F tillverkades ju först som en försöksserie om 3 (601-603). 1945-46 tillverkades sedan 12 st lok (621-632) och 1948-49 ytterligare 9 st (694-702).

Bilder på loken 621-632 visar slät ytterplåt medan 694-702 visar klart nitade sidor. Vad föranledde detta?

Tore Nordin anger i Svenska Ellok att det bara gjordes "få" ändringar mellan serierna.

Kan det vara problem med svetsning på samma sätt som med de första M-loken (senare Mg)? Verkar dock lite kort mellan leveranserna för att man skulle hitta så stora problem att man bestämmer sig för att ändra. Det verkar inte heller som de tidigare loken senare i livet varit tvungna att byggas om.

/Mats B

Hela tråden:

 

Time: 234
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE pid = 0 AND (mlf2_akismet_rating.spam = 0 AND mlf2_b8_rating.spam = 0) AND category IN (0, 4, 5, 6, 7, 8, 9, 25, 14, 23, 19, 22, 24, 10, 21, 11, 12, 13, 15, 16, 26, 18, 20, 27)

Time: 1037
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE (mlf2_akismet_rating.spam = 1 OR mlf2_b8_rating.spam = 1)
Time: 1236
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE category IN (0, 4, 5, 6, 7, 8, 9, 25, 14, 23, 19, 22, 24, 10, 21, 11, 12, 13, 15, 16, 26, 18, 20, 27) AND (mlf2_akismet_rating.spam = 0 AND mlf2_b8_rating.spam = 0)

Total time: 3205

[x]
[*]