23-08-2021, 11:54 AM
I have one of the Inflation kits mentioned by John Mason which I bought it from an antique stall. I fact it pumps fresh air not petrol/air mixture. It uses the compression to operate a small pump valve. They come with 18mm and 14mm treads and are very efficient. You don't want to leave it pumping for long. They were made by Schrader; the tyre valve company. Excellent if you spot one for sale anywhere.