Thank you Angrybear, I couldn't find the pics link in this BBS thread so I went for your image host option. I have got a Photobucket account, but it's 'off the chart' hopless and slow!!
Here are some pics so far of stuff to show.
https://ibb.co/kLEsH9
https://ibb.co/kYMuVU
https://ibb.co/fVB6c9
https://ibb.co/bKdV4p
The grey and alloy pulley parts are home made and home cast then turned. The pic shows one set running off the Vauxhall windscreen motor gearbox. The gearbox is very slow, but after playing with different size pulleys, I got the cord speed pretty good and quick The alloy boss was turned up and a 10.5 degree taper hole made so the output shaft taper splines can engage.
The extra pulley bolted to the bottom of the proprietary Crapbay pulley was turned up from some nylon stock I had. There was a lip in the proprietary Crapbay pulley, so I used that as a register for locating my nylon extra pulley. The resin double pulley is yet to have a pair of double bearings added (they are on their way) I just drilled a 10mm hole for now so can test the speed. The picture also shows some swarf in the 'U', that is just some muck off the bench, the 'U' IS perfectly smooth
Now I've got the speed right I was able to order the drive belts. They are 175mm diameter and 5.5mm round cross section. Hoping they will get here tomorrow so I can make the whizzer boxes and get all the 'guts' in one working place