Re: Re: Thermodynamics of rubber bands

From: Bill Gowen <wdgowen_at_gmail.com>
Date: Wed, 23 Jun 2010 11:20:53 -0400

Several years ago I made a comment on the FFML about how F1D flyers wind slowly to avoid heat buildup. I got roundly attacked for advancing such a preposterous idea to the guys who know everything about rubber.

  ----- Original Message -----
  From: tim.haywardbrown_at_rocketmail.com
  To: Indoor_Construction_at_yahoogroups.com
  Sent: Wednesday, June 23, 2010 6:40 AM
  Subject: [Indoor_Construction] Re: Thermodynamics of rubber bands


    
> Temperature affects the elasticity of a rubber band in an unusual way.
> Heating causes the rubber band to contract, and cooling causes
> expansion.

  Don't F1B flyers use heating jackets to keep their (wound) motors warm on cold flying days? Does that make the rubber contract? And what does that do to the torque?
  Tim



  
Received on Wed Jun 23 2010 - 08:22:04 CEST