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techtalk:ih:engmech01c [2023/12/19 23:41] hippysmack [Oil Pump Mounting Boss and Oil Passages] |
techtalk:ih:engmech01c [2023/12/19 23:46] hippysmack [Speedometer Drive Gear Boss] |
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Here is a cross section view of the right case at the countershaft boss. \\ | Here is a cross section view of the right case at the countershaft boss. \\ | ||
- | {{:techtalk:ih:transfinal:1952-up_transmission_countershaft_boss_variantions_by_dr_dick.jpg?direct&400|}} ((illustration by Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1512080)) \\ | + | {{:techtalk:ih:transfinal:1952-up_transmission_countershaft_boss_variantions_by_dr_dick.jpg?direct&400|}} ((illustration by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/139355-trans-corner-reinforcement-54-72?t=1512080)) \\ |
==== Speedometer Drive Gear Boss ==== | ==== Speedometer Drive Gear Boss ==== | ||
* 1952-1972 K/XL/XLH and 1959-1972 XLCH models use a mechanical speedometer run by a (11T) drive gear unit meshed at the trans countershaft. \\ The drive gear screws into the boss built into the right case for it. This area of the case is notorious for blowing out. | * 1952-1972 K/XL/XLH and 1959-1972 XLCH models use a mechanical speedometer run by a (11T) drive gear unit meshed at the trans countershaft. \\ The drive gear screws into the boss built into the right case for it. This area of the case is notorious for blowing out. | ||
- | * 1973 AND LATER CASES DO NOT HAVE THE SPEEDOMETER DRIVE AT THE COUNTERSHAFT BOSS. \\ The drive gear was deleted on the right case and the new drive unit runs off the front wheel axle. \\ The drive unit boss thru to the inside housing on the right case was also deleted. This leaves more material in that area and more strength. ((brucstoudt of the XLFORUM http://xlforum.net/forums/showthread.php?p=5927789#post5927789)) | + | * 1973 AND LATER CASES DO NOT HAVE THE SPEEDOMETER DRIVE AT THE COUNTERSHAFT BOSS. \\ The drive gear was deleted on the right case and the new drive unit runs off the front wheel axle. \\ The drive unit boss thru to the inside housing on the right case was also deleted. This leaves more material in that area and more strength. ((brucstoudt of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/203328-71-xlh-value/page4#post4545503)) |
| 1972-earlier speedometer drive gear boss ((photo courtesy of Ebay seller, inlinefabrication. [[https://www.ebay.com/str/inlinefabrication|Link to Ebay Store]] )) | 1968 case repaired ((photo courtesy of Ebay seller, animalhouse2010, [[https://www.ebay.com/str/animalhouse2010?_trksid=p2047675.l2563|Link to Ebay store:]] )) | 1973-later have no speedo drive gear boss ((photo courtesy of Frost Cycle Shack [[https://www.ebay.com/str/frostcycleshack|Link to Ebay Store]] )) | | | 1972-earlier speedometer drive gear boss ((photo courtesy of Ebay seller, inlinefabrication. [[https://www.ebay.com/str/inlinefabrication|Link to Ebay Store]] )) | 1968 case repaired ((photo courtesy of Ebay seller, animalhouse2010, [[https://www.ebay.com/str/animalhouse2010?_trksid=p2047675.l2563|Link to Ebay store:]] )) | 1973-later have no speedo drive gear boss ((photo courtesy of Frost Cycle Shack [[https://www.ebay.com/str/frostcycleshack|Link to Ebay Store]] )) | |