Side Mirror Break-Away

[autospace]

Hi all,

Does anyone know where I can find any standard for external side rear view mirror break-away force? I can't find it anywhere in FMVSS 571.

Also if anyone knows a typical Cd (Co-eff of drag) value for a standard car side mirror, or a nominal drag force, that would be most helpful also. My reference speed is about 86m/s, but any will do.

Many thanks,


AutoSpace

 

[ornerynorsk]

If I remember correctly commercial vehicles are 90 lbs of force. NHTSA should have something on it. 86 meters per second is rather fast? Nearly 200 mph.

 

[ivymike]

the Cd for a mirror, after it separates from the vehicle? ...or the Cd for a vehicle which has a mirror or two on it?

 

[GregLocock]

Almost certainly Hucho has links to studies which examine door mirrors, I think a Cd figure as such is misleading.

Cheers

Greg Locock

SIGlease see FAQ731-376 for tips on how to make the best use of Eng-Tips.