Bo­hemian Jewel Crusher?

Old Bike Australasia - - LETTERS TO THE EDITOR -

When you ask an Aussie “what’s your bike like?”, you will likely get the re­sponse, “she’s a ball tearer mate.” This be­ing a well-known eu­phemism in Aus­tralia for the bike be­ing of ex­cep­tional qual­ity and very fast. When Tri­umph bought out their tankmounte­d chrome plated frame on which you could attach your shop­ping bag, a more lit­eral mean­ing for this eu­phemism was adopted. How­ever the Tri­umph vari­ant of a ball tearer is un­able to hold a torch to that of the Bohmer­land Tourster you fea­tured in OBA 61 on page 50. Cen­trally sit­u­ated di­rectly in front of the fam­ily jew­els, sits the open rock­ers and valve springs of this Bo­hemian, long stroke, 600cc ‘Jewel Crusher.’ To add to the ex­pe­ri­ence, the long highly pol­ished run­way like leather seat would en­sure cor­rect align­ment and the per­fect launch pad un­der the light­est of brak­ing forces. You would think this was enough, but clearly these Bo­hemi­ans were tough, as aimed di­rectly at your right in­ner thigh is the un­re­stricted throat of an AMAC car­bu­ret­tor, ca­pa­ble dur­ing back­fire of belch­ing 600cc of burn­ing fuel air mix­ture just be­low the nether re­gion. As you point out, the ris­ing heat from this en­gine would cer­tainly be wel­comed on this win­ter ex­cur­sion, but the rider’s seat­ing po­si­tion would no doubt be a tar­ing ex­pe­ri­ence leav­ing him with noth­ing of im­por­tance worth keep­ing warm. I think I’ve iden­ti­fied a niche mar­ket though. If you can eas­ily fit two adults, two chil­dren and a cage of chick­ens on a Honda step through, you could open up a trans­port com­pany with a cou­ple of Bohmer­land Toursters in Thai­land. On a se­ri­ous note though, I’d be proud to own and at­tend a rally with or with­out the fam­ily on one of these, but I’d be very cau­tious about trav­el­ling too close to any­thing with ABS brakes on the way home. Peter Straw­bridge Barossa Val­ley Clas­sic Mo­tor­cy­cle Club SA one of the first peo­ple in Aus­tralia to make ti­ta­nium con­nect­ing rods. A gifted tool­maker by trade, he de­signed, then made the pat­terns for the front brake. Cast­ings were from Com­mon­wealth Air­craft Cor­po­ra­tion Fac­tory at Fish­er­mens Bend. In ad­di­tion he ma­chined a con­nect­ing rod for his 90mm bore 500cc Manx Nor­ton from a ti­ta­nium bil­let also ob­tained from CAC; the only source of ti­ta­nium at that time. Bob also made for my TD1A Yamaha racer a drive side crank; bet­ter ma­te­rial that never over­came the un­der­sized shaft de­sign fault. An old school en­gi­neer and racer who makes our sport of mo­tor­cy­cle rac­ing so great. Barry Ken­naugh Via email

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