Differences
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techtalk:ih:oil04h [2023/11/03 16:44] hippysmack [Pics and Information on L1973-1978 XLCH Oil Tanks] |
techtalk:ih:oil04h [2024/01/01 21:03] (current) hippysmack |
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| 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 were changed (new upper mount - 62554-73 and new lower mount - 62555-73). \\ | 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. \\ | ||
