Yes!! Just the right puzzle for a commercial vehicle specialist. Thank you for the brochure.
The easy way to change tube or tire was the reason for the invention. But in addition they still provided good cooling of the brake drums through openings between the spokes. And they look damn good, that's why they were still very popular in Switzerland for a long time.
But please take extreme care when dismounting! The clamps that hold the rim parts together ("A" in the picture below) can sit very tight. When loosened with a hammer after removing the nuts ("B"), they jump through the area with a lot of energy (that is why they are called "frogs"). Those fellows who do so, should have finished their family planning!! Therefore loosen nuts only, loosen frogs with a hammer and then remove the nuts complete.
So, that was today's lesson "Commercial vehicle technology for beginners", thank you for your attention.
