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techtalk:evo:priclutch01 [2019/08/16 17:00] ixl2relax [Clutch Design & Operation] |
techtalk:evo:priclutch01 [2019/08/29 09:41] ixl2relax [Upgrade Clutch Diaphragm Springs - Pressure] |
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On the other hand, for 1991-1993 models, which also have five-speed transmissions, while the clutch operation is the same, the Ball & Ramp Assembly is mounted to the inside of the Primary Cover (as illustrated for 1984L-1990 four-speed models). This necessitates the removal of the Primary Cover in order to replace either the B&R unit or the Adjuster Bearing unit on those models. | On the other hand, for 1991-1993 models, which also have five-speed transmissions, while the clutch operation is the same, the Ball & Ramp Assembly is mounted to the inside of the Primary Cover (as illustrated for 1984L-1990 four-speed models). This necessitates the removal of the Primary Cover in order to replace either the B&R unit or the Adjuster Bearing unit on those models. | ||
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- | Also note that the clutch pressure plate for 883 models changed in 2004. From 2004-later, the 883 models used a lighter clutch pressure plate, while previously, both the 883 & 1200 models were the same.((http://hammerperf.com/883conversions.shtml)) | ||
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===== Upgrade Clutch Diaphragm Springs - Pressure ===== | ===== Upgrade Clutch Diaphragm Springs - Pressure ===== | ||
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+ | Below are a list of upgrade versions. The 'xx% stronger' are claimed values by the respective vendors. | ||
+ | Energy One suggests that if you are using a diaphragm spring of +25% that you should also upgrade your pressure plate to a billet version because they have had issues with the stock cast pressure plate cracking. ((cjburr at http://xlforum.net/forums/showpost.php?p=666722)) | ||
**L1984-90 Sportster** | **L1984-90 Sportster** | ||
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Energy One HD-style Clutch Spring ((https://www.energyoneclutches.com)) | Energy One HD-style Clutch Spring ((https://www.energyoneclutches.com)) | ||
- | * ???lbs - 15% Stronger Than Stock 1200 Clutch Spring (BT15) | + | * 340lbs - 15% Stronger Than Stock 1200 Clutch Spring (BT15) (% based on '91-'03 1200 OEM spring) |
- | * ???lbs - 25% Stronger Than Stock 1200 Clutch Spring (BT25) | + | * 380lbs - 25% Stronger Than Stock 1200 Clutch Spring (BT25) (% based on '91-'03 1200 OEM spring) |
Barnett HD-style Clutch Spring ((http://www.barnettclutches.com/1845/harley-davidson/0/0/0-harley-davidson-1991-and%20later.html)) | Barnett HD-style Clutch Spring ((http://www.barnettclutches.com/1845/harley-davidson/0/0/0-harley-davidson-1991-and%20later.html)) | ||
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- | You may also want to explore this page in the REFerence section: | + | **NOTE:** Alto has released an upgraded Spring Plate design for the '91-later Sportsters - Alto P/N 095763HD. It utilizes Stainless Steel rivets instead of the previous Brass Rivets design. Time will tell if this is more reliable.((Rocketmangb at http://xlforum.net/forums/showthread.php?t=2074441)) [[https://www.altousa.com/images/new_products/Alto__095763HD_Harley_Davidson_Spring_Plate_with_NEW_Stainless_Rivets.pdf|>>>Link To Alto PDF<<<]] |
- | [[techtalk:ref:priclutch02|'91-later Alternative Clutch Pack Using XR1200 Parts]] | + | |
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+ | You may also want to explore these pages in the REFerence section:\\ | ||
+ | [[techtalk:ref:priclutch02|'91-later Alternative Clutch Pack Using XR1200 Parts]]\\ | ||
+ | [[techtalk:ref:priclutch03|'91-later Aftermarket Clutch Packs]] | ||