Chivo’s Konig

Old Bike Australasia - - OUT’N’ABOUT -

An ex­cit­ing ad­di­tion to the Pe­riod 4 Side­car ranks will de­but at the Aus­tralian His­toric Road Racing Cham­pi­onships at Sym­mons Plains, Tas­ma­nia, in the hands of vet­eran racer Doug Chivas. The new ma­chine is owned by War­ren Thomas, a fa­mil­iar fig­ure him­self on his yel­low TZ750 Yamaha-pow­ered Win­dle, and is pow­ered by a brand new flat-four Konig en­gine sourced from the Czech Repub­lic. The frame, which is iden­ti­cal di­men­sion­ally to the Win­dle, has been built by Peter Selke, and the aim is to have the com­plete out­fit, ready to race, weigh in un­der 190kg. “That’s 100kg lighter than my Win­dle,” says War­ren, “and with 110 horse­power in 500cc form it should be very com­pet­i­tive. The beauty of the Konig en­gine is that the com­bus­tion cham­ber – in ef­fect the in­di­vid­ual cylin­der heads, sit in­side what looks like the head it­self and can be re­moved eas­ily, al­low­ing the wet lin­ers for each cylin­der to slip out. Then it is a rel­a­tively sim­ple process to change the sleeves and ‘heads’ over to con­vert it to a 700 – it uses the same pis­tons as the orig­i­nal TZ700 Yamaha.”

Tak­ing shape: the al­most fin­ished chas­sis built by Peter Selke.

Drive side with NEB clutch.

The new Konig en­gine, mated to a TT In­dus­tries gear­box.

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