Guest imported_pete324rock Posted July 27, 2005 Share Posted July 27, 2005 Can anyone enlighten me on the purpose of the spring around the outer of the front brake drum on '56 olds- maybe others. Maybe I used to know the answer but has since slipped my mind-something to do with static electicity maybe??? thanks pete Link to comment Share on other sites More sharing options...
heidigirl Posted July 27, 2005 Share Posted July 27, 2005 i believe the idea is to absorb/offset harmonic vibrations, or some such. Link to comment Share on other sites More sharing options...
Guest imported_pete324rock Posted July 27, 2005 Share Posted July 27, 2005 My second guess was maybe for cooling or something-pete Link to comment Share on other sites More sharing options...
Guest Dave Wyatt Posted July 28, 2005 Share Posted July 28, 2005 I thought it was to keep the drum from over expanding and breaking. Link to comment Share on other sites More sharing options...
1954Super88 Posted December 17, 2005 Share Posted December 17, 2005 I tend to agree with the idea the spring is there to dampen harmonic resonance (vibration). I had read this somewhere, some time ago. Evidently, applying the brakes under certain conditions (acumulated dust on brake shoes, inside drum, dampness, and so forth) could excite the natural frequency at which the drum would vibrate (resonate). The spring would add mass that would tend to shift the harmonic frequency away from that which would be activated under certain braking situations/conditions. Hoe his helps. Link to comment Share on other sites More sharing options...
Guest Silverghost Posted December 17, 2005 Share Posted December 17, 2005 I believe that the above post is correct!!! It is there to eliminate Brake Squeal and the ringing sound that results...sort of like a high pitched bell-like sound... Think about it ...Hit a bell...then put a spring or rubber band around it...Sound is soon canceled out by the spring!!! This was used on many drum brake cars over the years...It may also aid in cooling...BUT this is not the true reason it was used!!! Link to comment Share on other sites More sharing options...
dlh61olds Posted December 20, 2005 Share Posted December 20, 2005 The 1961 Motors Manual calls this spring a "dampener". Indicates it is missing or insulated from the drum if the brakes squeal on application.The Olds parts manual simply calls it a coil spring.Dave Link to comment Share on other sites More sharing options...
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