latest project: "Old Cro" the R-evolution
The design work is done (after years of research, sourcing parts, and saving funds) and the actualization of my design obsession has finally begun. First order of business: a track-worthy chassis. Like a new father, I'm anxious to share pictures of the new-born, and entertain thoughts and comments.
Progress so far:
frame fabrication: Randy Illg & FRAMECRAFTERS
stay tuned for further development..
more pics at ROCKERBOXER:[URL="http://www.rockerboxer.com/page/page/5324463.htm"]http://www.rockerboxer.com/page/page/5324463.htm[/URL]
another K100, R100GS, & R100R bite the dust
[QUOTE=DADODIRT;272340]What do you have in mind for the front suspension?[/QUOTE]
a Marzocchi set [u]salvaged[/u] from a K100, of course.
wheels will be tubeless BMW hubs [u]e-bay-salvaged[/u] from a GS and an R100R... (this IS fun!) laced to more appropriately sized rims. the rear hub is from a Paralever ekwipt GS and will be machined to fit the Mono final drive.
note marking on swing arm:
note marking on swing arm, "92 R100RS":
one more bite for the R-evolution.
"I assembled the front end and wheels. The steering head angle is 26.5 degrees with the bike sitting on the bare wheels and the forks slid up in the triple trees 1 inch. With tires it should be about the same or slightly less (26 deg). The trail figures out to 3.96" at 27 deg and 3.69 inches at 26 deg so we are right in the ball park." – Randy Illg
On matching wheel centerline and frame centerline – relating to why BMWs like to drift to the right, and this one won't:
"The engine sits about 1degree offset from true centerline (it points slightly to the left when looking down). This brings the thrust lines of the engine in line with the driveshaft centerline. The rear wheel is on centerline and the swing arm must be all the way to the right. It all works with no binding." – Randy