Differences
This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
techtalk:evo:priclutch01 [2019/08/16 17:27] ixl2relax [Upgrade Clutch Diaphragm Springs - Pressure] |
techtalk:evo:priclutch01 [2019/08/29 09:41] ixl2relax [Upgrade Clutch Diaphragm Springs - Pressure] |
||
---|---|---|---|
Line 48: | Line 48: | ||
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. | ||
- | |||
- | |||
- | **Also note** that the clutch diaphragm spring for 883 models changed (883=P/N 37910-04B & 1200=P/N 37924-04A). From 2004-later, the 883 models used a lighter diaphragm spring, while previously, both the 883 & 1200 models were the same (P/N 36792-91). | ||
\\ | \\ | ||
Line 287: | Line 284: | ||
===== Upgrade Clutch Diaphragm Springs - Pressure ===== | ===== Upgrade Clutch Diaphragm Springs - Pressure ===== | ||
- | |||
- | The stock clutch diaphragm spring for both 883 & 1200 models was the same from '84-'90 (36792-84) and from 1991 to 2003 (36792-91). From 2004-later, the 883 models used a lighter diaphragm spring: 883 uses 37910-04B & 1200 uses 37924-04A. | ||
Below are a list of upgrade versions. The 'xx% stronger' are claimed values by the respective vendors. | 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** | ||
Line 305: | Line 301: | ||
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)) | ||
Line 370: | Line 366: | ||
\\ | \\ | ||
- | 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]] | + | |
+ | \\ | ||
+ | \\ | ||
+ | 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]] | ||