When top discus throwers consulted, we listened, “Rim weight was not the important factor to long throws, it is Power Retention RimGlide tm.” 
This new design technology keeps the discus balanced over longer duration of throw, resulting in longer throws! 

 https://vimeo.com/210716349 Discus Balance.

Our new line of Discus with PMD (Preventive Mechanism Against Damaged) High Performance YELLOW ABS engineering has provided side plate durability) 

 

Secrets and tips to throwing farther from the Pros

2016 USA Olympian Tavis Bailey says: 

I wouldn't say its as much distance related for all of the discus'. Some of them are preference, skill and experience. 
70-80-90 would be Novice - Intermediate - Advanced and the distances that come with that are relative to ability levels. 
As well, another factor that plays into this tremendously, is ability to throw a clean discus. I know advanced 200 foot throwers that can't hit a super clean throw, so instead of using a 90+ they use 80-85. 
I would recommend any thrower that is seriously looking to get some good throws to start with an 80+ and then move up from there. I have thrown many 200 foot throws in training and competition with that rim weight.
Lastly, I would say that a thrower MUST be loyal to a discus. When I was younger I got caught up with the technology of different discus and rim weights and threw different discus' at meets. I carry two different rim weight discus' to meets and won't warm up with or touch anything else on competition day. 

NELCO USA

VIDEO of Air flow test  https://vimeo.com/231130900​ ​

 2015 USATF Outdoor Champion Jared Schuurmans says; The rim weight of the discus is relative to comfort and skill level. Low rim weight discus doesn't necessarily go far and high rim weight discus are not guaranteed to go further. Finding a weight that is comfortable to the athlete and his skill level is the best chance in optimal distance.
Low rim weight discus in theory are designed for beginners and as the weight goes up the logic is the discus will spin faster.  Making it more aerodynamic and carrying the ability to go further. However,  if the athlete does not have the ability to spin the discus well in a higher rim weight, will result in a reduced distance because the discus will wobble and create drag. 

  1. Rim weight is a comfort and skill mechanism that does not increase the distance that you can throw but rather it increases the ability to maintain the aerodynamics and air foil longer through the duration of the throw.  Heavier rim weights increase radius and allow higher end throwers to apply forces.
  2. Too high of a rim weight may allow the discus to stop spinning throughout the throw. Retention will be subject to the rim weight working against the thrower diving prematurely. Any discus that stops spinning dies and is subject to dive.
  3. Head Wind conditions move up a rim weight % . Take an easier throw focusing on hitting the wind and the throw clean. The rim weight helps keep the nose down.
  4. Side winds stay loyal to the discus you throw the most for retention and more stability.
  5. Tail winds stay loyal to the discus you throw consistently the most.