GOODVIBRAT­IONS

Real Classic - - Letters - Frank W

Bad vi­bra­tions shouldn’t oc­cur on a Rick­man In­ter­cep­tor as re­ported by Alan Cath­cart in RC194. Dy­namic bal­anc­ing of each crank with weights at­tached to rep­re­sent the con­rod and pis­ton as­sem­blies was good prac­tice to ad­dress the small dif­fer­ences aris­ing from sand cast­ing. The re­sult was one of the smoothest big twins avail­able, ev­i­dent from a lack of rub­ber fix­ings on ei­ther the Rick­man or the Red­ditch In­ter­cep­tor.

The mo­tor of the test bike may have lost its bal­ance from the use of heav­ier or lighter re­place­ment pis­tons, but there is an­other pos­si­bil­ity. It’s been said that the mo­tors built for the Floyd Cly­mer In­dian In­ter­cep­tors (most of which went into Rick­man bikes) had a dif­fer­ent bal­ance fac­tor to those of the orig­i­nal Royal En­field. This in­com­pat­i­bil­ity of mo­tors could be more than an ur­ban myth, re­alised from the boxes of parts which made the Penn­syl­va­nian test bike. Oily Boot Bob, mem­ber

In­ter­est­ing. I’ve rid­den sev­eral Se­ries 2 In­ter­cep­tors and ev­ery one of them shook to a greater or lesser ex­tent. My first-ever paid-for road­test was a dou­ble feature of an RE Se­ries 2 with a Match­less G15 Mk2, which had an Atlas en­gine. The Match­less was the smoother.

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