Differences
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techtalk:ih:oil04h [2021/04/18 22:45] hippysmack [L1973-1978 Offset Mount Tank] |
techtalk:ih:oil04h [2024/01/01 21:03] (current) hippysmack |
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| [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | ||
| ====== IH: Oiling & Lubrication - Sub-04H ====== | ====== IH: Oiling & Lubrication - Sub-04H ====== | ||
| - | ====== Pics and Information on L1973-1978 XLCH Oil Tanks ====== | + | ====== Pics and Information on L1973-1978 XLCH "Lunchbox" Oil Tanks ====== |
| See also in the Sportsterpedia; \\ | See also in the Sportsterpedia; \\ | ||
| ….. *[[techtalk:ih:oil04#oil_line_routing|57-85 Oil Line Routing]] \\ | ….. *[[techtalk:ih:oil04#oil_line_routing|57-85 Oil Line Routing]] \\ | ||
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| Click on any pic below to enlarge: \\ | Click on any pic below to enlarge: \\ | ||
| - | ===== L1973-1978 Offset Mount Tank ===== | + | ====== L1973-1978 Offset Mount Tank ====== |
| The design of the frame changed in 1973. 1972-earlier used a heavy rough casting where the top tube and the vertical rear tubes meet. \\ | The design of the frame changed in 1973. 1972-earlier used a heavy rough casting where the top tube and the vertical rear tubes meet. \\ | ||
| - | The 1972 and earlier frame tubes are canted at an angle of 10° where the 1973 frame tubes are at an angle of 9°45'. Not a great difference but still different. 1973 did away with the casting. \\ | + | The 1972 and earlier frame tubes are canted at an angle of 10° where the 1973 frame tubes are at an angle of 9°45'. Not a great difference but still different. \\ |
| + | 1973 did away with the casting. \\ | ||
| And used what looks like lightweight welded strap metal with an angular bracing running from the rear engine mount up to the end of the fender supports. \\ | And used what looks like lightweight welded strap metal with an angular bracing running from the rear engine mount up to the end of the fender supports. \\ | ||
| But a greater change (apart from the casting elimination) is the distance between the head tube and the rear vertical tubes. 1972 = 28.42", 1973 = 29.04". \\ | But a greater change (apart from the casting elimination) is the distance between the head tube and the rear vertical tubes. 1972 = 28.42", 1973 = 29.04". \\ | ||
| - | Even though the 1972 frame head had a greater rake angle (30°) the 1973 rake angle was less (29°35') the distance to the rear tubes is greater. ((piniongear of the XLFORUM http://xlforum.net/forums/showthread.php?t=806891)) \\ | + | Even though the 1972 frame head had a greater rake angle (30°) the 1973 rake angle was less (29°35') the distance to the rear tubes is greater. ((piniongear of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/96210-xlch-lunchbox-oil-tank-question?t=806891)) \\ |
| L73-78 tanks are notched on the flange between the top bolt holes. This notch allowed HD to raise the tank position. \\ | L73-78 tanks are notched on the flange between the top bolt holes. This notch allowed HD to raise the tank position. \\ | ||
| - | Raising the tank meant that both the upper and lower mounts also changed. \\ | + | Raising the tank meant that both the upper and lower mounts were changed (new upper mount - 62554-73 and new lower mount - 62555-73). \\ |
| - | In 1975, a ridge was added to the inside of the filler neck to retain the filler cap better. The L73-78 bottom mount is taller for the raised tank. ((Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1284627)) | + | In 1975, a ridge was added to the inside of the filler neck to retain the filler cap better. The L73-78 bottom mount is taller for the raised tank. ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/126499-xlch-oil-tank-differences?t=1284627)) |
| Below is an after market version upper oil tank mount from Legends Motorcycles showing how the upper mount changed. \\ | Below is an after market version upper oil tank mount from Legends Motorcycles showing how the upper mount changed. \\ | ||
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| {{:techtalk:ih:oil:oil_tank_bracket_-_upper-_for_l1973-1978_xlch_by_legendsmc.jpg?direct&300|}} ((photo courtesy of Legends Motorcycles, [[https://www.ebay.com/str/legendsmotorcycles?_trksid=p2047675.l2563|Link to Ebay store]] )) \\ | {{:techtalk:ih:oil:oil_tank_bracket_-_upper-_for_l1973-1978_xlch_by_legendsmc.jpg?direct&300|}} ((photo courtesy of Legends Motorcycles, [[https://www.ebay.com/str/legendsmotorcycles?_trksid=p2047675.l2563|Link to Ebay store]] )) \\ | ||
| + | ====== Pics ====== | ||
| + | Click on any pic to enlarge: \\ | ||
| + | |||
| + | | L1973-1978 XLCH Oil Tank Pics ((photos courtesy of Ebay seller, animalhouse2010, [[https://www.ebay.com/str/animalhouse2010?_trksid=p2047675.l2563|Link to Ebay store:]] )) ||| | ||
| + | |{{:techtalk:ih:oil:1973l-1978_xlch_oil_tank_62508-73_pic1_by_animalhouse2010.jpg?direct&300|}}|{{:techtalk:ih:oil:1973l-1978_xlch_oil_tank_62508-73_pic2_by_animalhouse2010.jpg?direct&300|}}|{{:techtalk:ih:oil:1973l-1978_xlch_oil_tank_62508-73_pic3_by_animalhouse2010.jpg?direct&300|}}| | ||
| + | |||
| + | | L1973-1978 XLCH Oil Tank Pics ((photos courtesy of Ebay seller, animalhouse2010, [[https://www.ebay.com/str/animalhouse2010?_trksid=p2047675.l2563|Link to Ebay store:]] )) ||| | ||
| + | |{{:techtalk:ih:oil:1973l-1978_xlch_oil_tank_62508-73_pic4_by_animalhouse2010.jpg?direct&300|}}|{{:techtalk:ih:oil:1973l-1978_xlch_oil_tank_62508-73_pic5_by_animalhouse2010.jpg?direct&300|}}|{{:techtalk:ih:oil:1973l-1978_xlch_oil_tank_62508-73_pic6_by_animalhouse2010.jpg?direct&300|}}| | ||
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