Posted on 4 Comments

Conservative Torque Chart for Super Sport Model Rubber

Torque chart for Super Sport model airplane rubber in 1/8″ size. This is my conservative starting point for rubber motors in various sizes that I use when flying. While different batches of rubber can yield far different results, this chart does give you a good starting point and basic information on what super sport rubber can take. I find that I often exceed these limits but prefer to wind to approximately 75% of maximum torque and get two flights out of the rubber motor if at all possible. In heated competition, this is not always possible and you find yourself pushing the winding to the limits. It is always a good idea to test your own batches of rubber so you can come to your own conclusions on the quality rubber you have.

Conservative breaking torque for 1/8 Inch Super Sport Rubber Motors

Strands of RubberTorque Ounces
45
67.5
810
1015
1220
1425
1630
1835
2040
2245
2450
2655
2860
3065
3270
3475
3680

4 thoughts on “Conservative Torque Chart for Super Sport Model Rubber

  1. I was looking for exactly this info, thinking winding to torque makes sense. But, whata bout other sizes of rubber,:1/16″, 3/32″? Can values be extrapolated from your chart? I am (will be after 60 years off) a sport flyer so an extra 10 seconds will not matter that much to me.
    Thanks,
    Bob

    1. Hi Bob,
      Actually I did fly some rubber competition models awhile back but my expertise is in things like NOS Gas power free flight models and the old kind of Ignition model engines used in SAM type flying.
      Thanks,
      Larry

  2. Torque is measured in u it’s of length x weight. Your chart just shows oz. What is the length of arm? Can I assume inches so 55 is oz x inches?

    1. Hi Ivor,
      Actually someone else put this on my web for me some time ago. It’s way above my pay grade! HaHa
      Thanks,
      Larry

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