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techtalk:ref:transfinal01a [2023/01/25 06:41]
ixl2relax
techtalk:ref:transfinal01a [2023/01/25 07:32]
ixl2relax [Parts]
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 [[:​techtalk:​menu|{{ ​ :​techtalk:​gototechnicalmenu.jpg|}}]] [[:​techtalk:​menu|{{ ​ :​techtalk:​gototechnicalmenu.jpg|}}]]
-====== REF: Gears, Sprockets, Belts - 01A ======+====== REF: Gears, Sprockets, Belts - Sub-01A ======
 \\ \\
 ====== Installing Chain-to-Belt Conversion ====== ====== Installing Chain-to-Belt Conversion ======
 \\ \\
  
 +This conversion information provided by '​dave76'​ of the XLForum - http://​xlforum.net/​forums/​showthread.php?​t=2082025
  
 +I finally found time to finish this project on my 1990 1200 XLH Sportster. I took it for a ride afterwards (it was freezing weather - but I enjoyed it). The belt is definitely quieter and smoother than the chain configuration.
 +
 +{{:​techtalk:​ref:​transfinal:​dave76-cn-blt-02.jpg?​600|image1}}
 +
 +===== Parts =====
 +
 +I found multiple used rear pulleys on eBay under $50. I got a used but perfect 128 tooth belt for $65.\\
 +I got the belt guard for $35. Only bought a new VTwin front pulley for $85.\\
 +{{:​techtalk:​ref:​transfinal:​dave76-cn-blt-03.jpg?​400|image1}}
 +
 +Top: Belt guard ---------- Bottom: 4 speed chain guard\\
 +{{:​techtalk:​ref:​transfinal:​dave76-cn-blt-04.jpg?​400|image1}}
 +
 +A standard 1991 Belt Drive Sprocket Cover will be needed, the left middle bolt is no longer used so I just used a short faux bolt and nut.
 +
 +The Belt I used was 1-1/8" wide with 128 teeth. This puts the axle adjuster in the middle of the range.
 +
 +**The main part numbers that I was able to find were:**
 +
 +40271-89 -- Front drive pulley 27 tooth
 +
 +40258-89 -- Rear driven pulley (pulley only not the chrome guide cover).
 +
 +40273-89 -- Rear pulley chrome guide cover.
 +
 +I cannot find the number for the top or bottom belt guards.
 +I sourced my rear pulley off eBay, the front came from V-Twin (Taiwan teddy).
 +
 +40022-91 -- Drive Belt (Standard Harley 1-1/8 x 128 teeth).
 +
 +===== Details =====
 +
 +{{:​techtalk:​ref:​transfinal:​dave76-cn-blt-01.jpg?​400|image1}}
 +
 +I bought the counterbore from eBay. This is needed to sink one of the case bolts about 3/16 of an inch to provide better belt clearance.\\
 +{{:​techtalk:​ref:​transfinal:​dave76-cn-blt-05.jpg?​600|image1}}\\
 +\\
 +{{:​techtalk:​ref:​transfinal:​dave76-cn-blt-06.jpg?​400|image1}}
 +
 +To clear the new belt drive sprocket, I used a 1991-up Drive Sprocket Cover. On the engine, the top rear stand-off stud (near the motor mount) needs to removed. It is replaced with a 7/16-14 x 2” bolt. The unused (open) hole in the sprocket cover just gets a faux bolt and nut.\\
 +{{:​techtalk:​ref:​transfinal:​dave76-cn-blt-07.jpg?​400|image1}}