VW solves its Wales Rally GB mys­ter­ies

Motor Sport News - - Rally News -

Volk­swa­gen has traced its re­cent Wales Rally GB trans­mis­sion prob­lems to the use of 2017 de­vel­op­ment parts.

All three Polo R WRCS suf­fered drive­shaft fail­ures on the open­ing day of the penul­ti­mate round of the world cham­pi­onship and tech­ni­cal di­rec­tor Fran­cois-Xavier De­mai­son has now con­firmed the is­sue.

He told MN: “We had tested a new seal­ing sys­tem for the [drive­shaft] boot and the breather on the CV joint for the 2017 car. It was work­ing well on the new car, so we de­cided to take this to Wales. Last year on Rally GB, we had a prob­lem with wa­ter ingress and we thought this new sys­tem would solve that.

“In­stead, there was some wa­ter and dust ingress. When we were do­ing the test­ing with the 2017 car, we didn’t do the long road sec­tion driv­ing – I think this is what caused it. There was a build up on the seals in the boot and that sucked in some of the dust. At the end of the open­ing day, we changed back to the 2016 part at the Fri­day night ser­vice. Small things can have con­se­quences.”

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