Ok. Please don't slate me for asking what is possibly a stupid question. How do you change the output chain drive from say a Blade engine to shaft drive to the rear diff???? Is it just a matter of removing the cog and welding on sort of UJ or is it more complicated than that?

You need to remove the sprocket and bolt in its place a 'sprocket adapter' or 'driveshaft adapter'
Something like this:
http://www.hawkmachine.com/Parts.htm#20

You obviously then mount the engine 90 degrees to the way it was in the bike......

The link is to a US supplier, there are UK/IRL ones as well..

Rob

Have a look at MNR half way down this page £60

Does anyone have any pics with this done?

mk sports.com £55
Rescued attachment 05112005 the dash !!!!!! 022.jpg