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3M views 12K replies 427 participants last post by  ToadofToadHall 
#1 ·
I'll start

vintage dholda honda racer with parallelogram rear suspension (I believe its cb750 powered). makes a virtual swingarm pivot placed very nearly on the counter shaft


 
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#11,206 ·
Yeah, looks like all the pivots (minus a few just for the shock etc) are rose joints. It's an easy way to do things without need for machining, and the extra degrees of freedom may help keep things from binding if your alignments are imperfect.

Not sure what the deisgn goals were. Looks like rear and front use a single shared shock, and the steering looks similar to the vintage OEC concepts, but with dual arm suspension instead of telescopic.



Nice experiment, wonder if it was worth the trouble? History says probably not...
 
#11,212 ·
"The worst bike I've ever owned" came out of my mouth on a daily basis whilst owning this 81 Moto Martin Z1000 (that gay looking dude holding it up cos the side stand was about to snap .... is me,the day before I sold it for £3500 ,we went to see Kevin Schantx fall off at the last corner on the last lap Le-man's GP500 round
 

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