|
Planar Speaker Asylum Welcome! Need support, you got it. Or share your ideas and experiences. |
|
|
|
Planar Speaker Asylum Welcome! Need support, you got it. Or share your ideas and experiences. |
|
In Reply to: Remember that the next time you take air transport. posted by Al Sekela on August 30, 2010 at 15:40:10:
airplanes are extremely conservatively designed and maintained like you wouldn't (or me, either) believe. Hard Landing? Let's have a look.
1000 hours? Let's have a look.
All sorts of inspections and maintenance by airframe hours. As a matter of fact, they have a design lifetime, in no small part CAUSED by the properties of Aluminum. Aluminum has NO FATIGUE strength. period. Doesn't matter too much the alloy, either. Though, for bicycle use, the 6000 series can be hardened to T6, which is about mild steel tubing.
The Comet cracks to which you refer started in the HIGHEST STRESS part of the design....the hard corners of the ports. Agreed. Boeing knew this. Problem was found during repeated pressure cycling of a fuselage in a water tank. As the failure occurred, it became impossible to pressurize. BTW, the descendent of the Comet is STILL FLYING as the Royal Navy Nimrod, the Brit equal to the P3 Orion, sub chasing planes both. But, as a commercial plane, it was finished.
Now, I'm being a shit. Aluminum has some properties which lend itself to this kind of use. It isn't under very much stress in this application. The aluminum will probably handily outlast the stuff it's bonded too and the excursion of the pieces is very small. About 30 years ago I rode an early Aluminum framed bike. Vitus by name. Awful. Wimpy, soft and had the lateral stiffness of a screen door. Rode awful, too. Later, I tested a Canondale. Stiff, efficient but no 'give' like good steel. I'd buy Titanium if I could afford it and still rode 5k miles a year.
My personal approach to 'mods' will be the most conservative. Wooden frames of the lightest design consistent with proper stiffness. Mounting and suspension features I'm simply not going to discuss...yet. and NO screws thru the driver OR metal bridgework stand. ALL brass or stainless hardware. The crossover will remain dead stock until the next round. NO goopy stuff or CLD will be applied until I do driver rotation tests on the modded panels....or probably ever.
Class Wednesday......Woodshop, of all things. This is a maximum effort and I want to have reframed drivers in about a year. Starting with basic woodshop, this being the starter class.
Too much is never enough
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: Remember that the next time you take air transport. - pictureguy 00:04:56 08/31/10 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
