Ok, good to know. I hadn't really managed to find any builds using them, so i guess that's why...
After having one of those motors in hand, it had looked like the Heiliner might be able to become a 'tandem engine' scraper (drive to all 4 wheels). But if it's not found to be a durable motor setup, it's probably not going to be worth trying.
I can't open the FB link, so here's a guy driving many different Tonkas
http://www.rccrawler.com/forum/non-c...onversion.html