tjtraver
05-04-2005, 08:15 AM
There's a K75 for sale on Ebay that has been modified , to replace the Mono swing arm with a paralever one. This seems to be a very worthwhile modification, which I'd never heard of ( but would like to do on my K75). Does anyone have any instructions on what's required for this mod ?
Here's the description the seller has posted :
" The paralever was unfortunately never offered on the K75 as OEM equipment. The difference in handling and ride between the monolever (single universal joint) and paralever, (two universal joints, one at each end of the driveshaft) is remarkable. The monolever exhibited was became affectionately known over the years as the 'Gummi Kuh" (Rubber Cow) effect. Like the earlier boxers, the monolever allowed the ring gear to feel like it was climbing the pinion gear in the final drive, causing the rear end of the bike to rise and fall under acceleration/deceleration loads. The monolever was slightly better due to the single sided, and stiffer swingarm, but not until BMW introduced the paralever did the chassis dynamics really change for the better. The paralever exhibits no Gummi Kuh effect, and provides more stable, and solid handling. In addition, the paralever eliminates the need for lubing the driveshaft splines on regular intervals. It is both better for handling and ride, and easier for maintenance. The ratio is taller, from the stock 32/10 (3.2:1) to 33/11, or 2.81:1. The engine has more than enough torque to compensate for the ratio change, and because the rear wheel is an 18 inch vs. the OEM 17 inch, the ratio is further compensated for. Acceleration is crisp and smooth, and RPM at cruising speed is significantly lower than with the standard ratio. Fuel economy is 50+ mpg, with the range at 200+ miles between fillups. "
Regards, Todd
Here's the description the seller has posted :
" The paralever was unfortunately never offered on the K75 as OEM equipment. The difference in handling and ride between the monolever (single universal joint) and paralever, (two universal joints, one at each end of the driveshaft) is remarkable. The monolever exhibited was became affectionately known over the years as the 'Gummi Kuh" (Rubber Cow) effect. Like the earlier boxers, the monolever allowed the ring gear to feel like it was climbing the pinion gear in the final drive, causing the rear end of the bike to rise and fall under acceleration/deceleration loads. The monolever was slightly better due to the single sided, and stiffer swingarm, but not until BMW introduced the paralever did the chassis dynamics really change for the better. The paralever exhibits no Gummi Kuh effect, and provides more stable, and solid handling. In addition, the paralever eliminates the need for lubing the driveshaft splines on regular intervals. It is both better for handling and ride, and easier for maintenance. The ratio is taller, from the stock 32/10 (3.2:1) to 33/11, or 2.81:1. The engine has more than enough torque to compensate for the ratio change, and because the rear wheel is an 18 inch vs. the OEM 17 inch, the ratio is further compensated for. Acceleration is crisp and smooth, and RPM at cruising speed is significantly lower than with the standard ratio. Fuel economy is 50+ mpg, with the range at 200+ miles between fillups. "
Regards, Todd