Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
techtalk:ih:body01g [2025/01/21 16:07] – [1973-1976 XLH, XLCH Sportster Frame Pics] hippysmacktechtalk:ih:body01g [2025/01/21 20:25] (current) – [1973-1976 XLH, XLCH Sportster Frame Pics] hippysmack
Line 5: Line 5:
 [[:sportster_history:99xx-01a|Click Here]] to reference Sportster VIN Information in the History section of the Sportsterpedia. [[:sportster_history:99xx-01a|Click Here]] to reference Sportster VIN Information in the History section of the Sportsterpedia.
  
-Click on any pic to enlarge:+1973 frames have differences in construction but the frame itself is still generic. ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/170265-frame-change?t=1826493))  ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/4958491-72-vin-on-a-73-frame/page3#post4958660))
  
-  +The part number changes for 1973 frames do not reflect the different construction changes and are a bit confusing. The early part number is the same for E73, 74, 75 and 76 models. Normally you'd think the frame is the same each year (except L73) because of that. Normally you'd think the L73 frame just got the rear bracing which spawned the L73 part# change. But the 74-76 part# reverted back to the 1973 number. 
-1973 frames have differences in construction but the frame itself is still generic.  ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/170265-frame-change?t=1826493)) ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/170265-frame-change?t=1826493)) ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/4958491-72-vin-on-a-73-frame/page3#post4958660)) \\+ 
 +Part numbers: 
 + 
 +  * E1973, 1974-1976 XLH/XLCH (47014-73) 
 +  * L1973 XLH/XLCH (47006-73), Note: E1973 frame part# sold as a replacement for this frame. 
 + 
 +Construction differences:
  
   * The early 1973 frame is the same as the 1972 frame (cast rear and neck).   * The early 1973 frame is the same as the 1972 frame (cast rear and neck).
Line 14: Line 20:
   * Late 1973 version 1 used the new neck casting and no diagonal supports.   * Late 1973 version 1 used the new neck casting and no diagonal supports.
   * Late 1973 version 2 now has diagonal supports.   * Late 1973 version 2 now has diagonal supports.
-  * 1974-1976 frames are the same as the L1973 frame.+  * Mid/late 1973 frames used the new tank and brackets. 
 +  * 1974-1976 frames are the same as the L1973 frame version 2.
  
 In L1974, the diagonal rear bracings were added to 1973 frames without them. \\ Adding the diagonals was a factory safety recall for mid 73-E74 (there is a pn in the 76 and 78 parts catalogs for the kit). \\ Without the braces, the rectangular bar would bend. This allowed the tire to contact the fender. When that happened, the tail lite and tires got wrecked. That = recall. \\ See "l973 XL, XLCH Frame Reinforcement / Tail Lamp Mod" below for more information. In L1974, the diagonal rear bracings were added to 1973 frames without them. \\ Adding the diagonals was a factory safety recall for mid 73-E74 (there is a pn in the 76 and 78 parts catalogs for the kit). \\ Without the braces, the rectangular bar would bend. This allowed the tire to contact the fender. When that happened, the tail lite and tires got wrecked. That = recall. \\ See "l973 XL, XLCH Frame Reinforcement / Tail Lamp Mod" below for more information.
Line 20: Line 27:
 A bend in the frame backbone on the right above the motor mount bolt may be found on L1973-1976 Sportster frames and does appear to be factory induced. \\ It has been believed to be for easier access to the motor mount bolt but the threaded area around the right side petcock on the gas tank hangs down close to the bend in the frame. A bend in the frame backbone on the right above the motor mount bolt may be found on L1973-1976 Sportster frames and does appear to be factory induced. \\ It has been believed to be for easier access to the motor mount bolt but the threaded area around the right side petcock on the gas tank hangs down close to the bend in the frame.
  
-{{:techtalk:ih:body:dent_in_frame_at_motor_mount_on_75_xlh_by_jtrapass_again.jpg?direct&400}}((photo by Jtrapass of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/80046-frame-repair?t=584357))+Click on any pic to enlarge: \\ {{:techtalk:ih:body:dent_in_frame_at_motor_mount_on_75_xlh_by_jtrapass_again.jpg?direct&400|dent_in_frame_at_motor_mount_on_75_xlh_by_jtrapass_again.jpg}}((photo by Jtrapass of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/80046-frame-repair?t=584357))
  
 The one frame fits both XLH and XLCH applications. \\ The left seat post has a "C" channel welded on the lower end for battery tray brackets (threaded holes on upper and lower end, 1 lower for XLH, both for XLCH). \\ There are 4 squared holes in the middle of the bracket for little plastic expansion nuts (70574-68) used to attach wiring terminals. \\ These terminals were used for 1970-1972 models for the tail and turn lights before going to plug connectors in 1973. \\ But with some future year frames sold as replacement for certain older frames, the terminal strip could be used on 70-72 replacement or left alone for newer frames not needing them. \\ L73-76 frame was suggested as replacement back to 1967 XLH and 1970 XLCH. [[:techtalk:ih:body01|Click Here]] to see the main Ironhead frame page for details on replacement frames). The one frame fits both XLH and XLCH applications. \\ The left seat post has a "C" channel welded on the lower end for battery tray brackets (threaded holes on upper and lower end, 1 lower for XLH, both for XLCH). \\ There are 4 squared holes in the middle of the bracket for little plastic expansion nuts (70574-68) used to attach wiring terminals. \\ These terminals were used for 1970-1972 models for the tail and turn lights before going to plug connectors in 1973. \\ But with some future year frames sold as replacement for certain older frames, the terminal strip could be used on 70-72 replacement or left alone for newer frames not needing them. \\ L73-76 frame was suggested as replacement back to 1967 XLH and 1970 XLCH. [[:techtalk:ih:body01|Click Here]] to see the main Ironhead frame page for details on replacement frames).
  
-{{:techtalk:ih:body:1975_xlh-xlch_frame_pic1_by_animalhouse2010.jpg?direct&400}}((photo courtesy of Ebay seller, animalhouse2010, [[https://www.ebay.com/str/animalhouse2010?_trksid=p2047675.l2563|Link to Ebay store:]])) {{:techtalk:ih:body:1975_xlh-xlch_frame_pic2_by_animalhouse2010.jpg?direct&400}}((photo courtesy of Ebay seller, animalhouse2010, [[https://www.ebay.com/str/animalhouse2010?_trksid=p2047675.l2563|Link to Ebay store:]]))+{{:techtalk:ih:body:1975_xlh-xlch_frame_pic1_by_animalhouse2010.jpg?direct&400|1975_xlh-xlch_frame_pic1_by_animalhouse2010.jpg}}((photo courtesy of Ebay seller, animalhouse2010, [[https://www.ebay.com/str/animalhouse2010?_trksid=p2047675.l2563|Link to Ebay store:]])) {{:techtalk:ih:body:1975_xlh-xlch_frame_pic2_by_animalhouse2010.jpg?direct&400|1975_xlh-xlch_frame_pic2_by_animalhouse2010.jpg}}((photo courtesy of Ebay seller, animalhouse2010, [[https://www.ebay.com/str/animalhouse2010?_trksid=p2047675.l2563|Link to Ebay store:]]))
  
-{{:techtalk:ih:body:1973_sportster_frame_pic3_by_animalhouse2010.jpg?direct&400}}((photo courtesy of Ebay seller, animalhouse2010, [[https://www.ebay.com/str/animalhouse2010?_trksid=p2047675.l2563|Link to Ebay store:]])) {{:techtalk:ih:body:1973_sportster_frame_pic4_by_animalhouse2010.jpg?direct&400}}((photo courtesy of Ebay seller, animalhouse2010, [[https://www.ebay.com/str/animalhouse2010?_trksid=p2047675.l2563|Link to Ebay store:]]))+{{:techtalk:ih:body:1973_sportster_frame_pic3_by_animalhouse2010.jpg?direct&400|1973_sportster_frame_pic3_by_animalhouse2010.jpg}}((photo courtesy of Ebay seller, animalhouse2010, [[https://www.ebay.com/str/animalhouse2010?_trksid=p2047675.l2563|Link to Ebay store:]])) {{:techtalk:ih:body:1973_sportster_frame_pic4_by_animalhouse2010.jpg?direct&400|1973_sportster_frame_pic4_by_animalhouse2010.jpg}}((photo courtesy of Ebay seller, animalhouse2010, [[https://www.ebay.com/str/animalhouse2010?_trksid=p2047675.l2563|Link to Ebay store:]]))
  
-{{:techtalk:ih:body:1973-1978_sportster_frame_pic1_by_acme_motorcycle_parts.jpg?direct&400}}((photo courtesy of Ebay seller, Acme Motorcycle Parts. [[https://www.ebay.com/str/acmemotorcycleparts?_trksid=p2047675.l2563|Link to Ebay Store]]:)) {{:techtalk:ih:body:1973-1978_sportster_frame_pic2_by_acme_motorcycle_parts.jpg?direct&400}}((photo courtesy of Ebay seller, Acme Motorcycle Parts. [[https://www.ebay.com/str/acmemotorcycleparts?_trksid=p2047675.l2563|Link to Ebay Store]]:))+{{:techtalk:ih:body:1973-1978_sportster_frame_pic1_by_acme_motorcycle_parts.jpg?direct&400|1973-1978_sportster_frame_pic1_by_acme_motorcycle_parts.jpg}}((photo courtesy of Ebay seller, Acme Motorcycle Parts. [[https://www.ebay.com/str/acmemotorcycleparts?_trksid=p2047675.l2563|Link to Ebay Store]]:)) {{:techtalk:ih:body:1973-1978_sportster_frame_pic2_by_acme_motorcycle_parts.jpg?direct&400|1973-1978_sportster_frame_pic2_by_acme_motorcycle_parts.jpg}}((photo courtesy of Ebay seller, Acme Motorcycle Parts. [[https://www.ebay.com/str/acmemotorcycleparts?_trksid=p2047675.l2563|Link to Ebay Store]]:))
  
-{{:techtalk:ih:body:1976_sportster_frame_pic4_by_motorcycle_dreams.jpg?direct&400}}((photo courtesy of Ebay seller, Motorcycle Dreams. [[https://www.ebay.com/str/motorcycledreams|Link to Ebay Store:]])) {{:techtalk:ih:body:1976_sportster_frame_pic7_by_motorcycle_dreams.jpg?direct&400}}(( photo courtesy of Ebay seller, Motorcycle Dreams. [[https://www.ebay.com/str/motorcycledreams|Link to Ebay Store:]]))+{{:techtalk:ih:body:1976_sportster_frame_pic4_by_motorcycle_dreams.jpg?direct&400|1976_sportster_frame_pic4_by_motorcycle_dreams.jpg}}(( photo courtesy of Ebay seller, Motorcycle Dreams. [[https://www.ebay.com/str/motorcycledreams|Link to Ebay Store:]])) {{:techtalk:ih:body:1976_sportster_frame_pic7_by_motorcycle_dreams.jpg?direct&400|1976_sportster_frame_pic7_by_motorcycle_dreams.jpg}}(( photo courtesy of Ebay seller, Motorcycle Dreams. [[https://www.ebay.com/str/motorcycledreams|Link to Ebay Store:]]))
  
  

Trace: