Videos Ty Tessmann Pro Tip: Building a ball diff août 5, 2021 by Chris Laisser un commentaire Former World Champion Ty Tessmann added a video to his YouTube channel where he shows us how to build a ball diff for the XRAY XB2 ’20. Source: Ty tessmann PartagezTweetez0 PartagesAbout ChrisFounder of circusrc.com, journalist & photographer in the RC world for several years, Chris is passionate about RC, racing and technique. Whether in France or in the world, he is trying to bring high-quality information and photos for enthusiasts... and make you want to join the world of RC!