To Brian Abraham. Thank you so much for placing on Pprune that wonderful description of the operation of the R2800. Having spent time as a QFI on the Convair 440 Metropolitan of the RAAF VIP squadron, I can identify with everything packed into the description you provided. I have copied the description you supplied and it is now tucked among the pages of my flying log book of that era as a happy piece of nostalgia of the good old days. Again, thanks.