Dont know whether anyone can help but my henkle wirly thing on my van has stopped working , bearings have gone , anyone out there suggest where i can get on or replacement parts

Thanks

sorry no idea what your on about with the Henkle wirly thingy, im guessing its some kind of fan , try

http://www.breakeryard.com/

i once got a headlight part using this service it was great part came next day

or try googling it as you know what sort of part your looking for, if its a small thing try looking in thompson local for a spare parts place

Do you mean a vent like a Flettner ?

Could be  ,it goes round on the top of the van by air movement ?

Thanks moonmaiden 

Yes is the answer

You could try a caravan equipment shop they have all sorts of ventilation systems for fitting/replacing in caravan roofs.  Worth a look.