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A Northrop A-17A Attack Bomber at the National Museum of the United States Air Force
The aircraft on display, Air Corps serial number 36-207, is the only A-17 series aircraft known to exist. It was delivered to the Air Corps and assigned to Barksdale Field, La., on June 25, 1937. She wears the markings of the 90th Attack Squadron, 3rd Attack Group, at Barksdale Field in June 1938
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Lockheed Model 8 Sirius 'Tingmissartoq'. Fitted with Edo floats. Built in 1929. Flown by Charles and Ann Morrow Lindbergh. On display at the American Museum of Natural History in 1950s
Remington Model 81 - .35 Remington
Lemon8 - Model 8 (Remix)
Once in a while it's nice to remember in those all-time BOMBS 💣💣💣💣
Percussion Madness //
Audi A7 | Opinions are cheap, be careful when choosing your source
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Lead-acid batteries
We all have Lithium-based batteries in our mobile devices today. In mid-80s there was the first wave of battery-powered portable (IBM compatible) PCs. They used lead-acid batteries which are much heavier for the same charge capacity. There were a lot of troubles connected with these batteries. Average battery lifetime in a laptop was about one to two years before charge capacity degraded. If you discharged the battery too much or let the device unused for a longer time you had to replace the battery. You even had to unplug your device from wall power when the battery was full. Otherwise it can be damaged according to manufacturer’s instructions.
On the other side these batteries were (and are) cheaper than any other type suitable for large portable computers. These two were removed from my Bondwell Model-8 laptop. They are not specifically designed for the laptop so they can be easily replaced with new ones even today after 30 years. Similar ones are used in some devices such as emergency lights.
Keyboard flex (caused by a loosen screw) was a reason of a damaged keyboard circuit board in my Bondwell Model 8. Fortunately David helped me and repaired an interrupted trace. The laptop is almost in 100% shape now...
Bondwell Model-8 (1986) and Acer Spin 7 (2016)
Although there is 30 years between these two, both have about the same battery capacity (36Wh for Bondwell and 42Wh for Acer). You probably think that the new laptop should last longer on a battery than the old one. That’s not true – both can run up to eight hours without a power brick (six hours is a more realistic value for both though).
As you can see some things didn’t change much :)
Just to explain this – battery powered laptops had great battery life in mid-80s. It was not uncommon to get more than 10 hours of continuous use. That was before power hungry components like hard drives and better backlit displays found their way into mobile computing devices.
