Longevity-inc Welding machines are JUNK

[heytwo]

I bought a model 518 welder/plasma in Dec 2008 .

I got to use it a bit , then the transistors failed .

The T' legs take a lot of stress , cause they are the

only path for the stress . Heavy heatsink is hooked to

T' tab , then legs are soldereed to PCB .

------------------ Unlike my other stuff

like my 40 amp Plasma only machine , has
T' well protected inside PCB , and when you separate the
heat sink from PCB . the attachement is Heat sink screwed to
PCB , T' takes no stress at all .

I lost my $650 , Simon K wont warranty the machine .

.......

2 props ,, 70inch , pushers , 400 HP total .
2 sets of wings fold forward .
three Yamaha R1 motorcycle engines .

They're so quiet and smooth , you can be in
the same cabin and not be annoyed .

The 2nd set of wings is high/forward ,
like an old bi-plane stagger .
The 2nd set can move CenterOfLift forward for added
cargo .
Stabilizers ( actually they are destabilizers ) are up front
close to pilot .
No ailerons , wingtip senses wind as a bird does .
Last 2 foot of wing tips are fully articulated ,
as a bird wing is .
Pilot has handles/levers on each side . If hyd boost
is not working , the levers work like 2 VW jacks
back to back. On heavier control surfaces , you may need
several pumps . Then pull a trigger to return surface to
its trim position .

Im shopping for the alum sheet .
californiametals.com has best price for 2024-T3 .063"
a 4 by 12 foot sheet in 100 quantity is about $185 / sheet .

Thats as good as it gets .
Next is DOM tube . Airframe uses bicycle ,,
steel-lug-in-tube technology .
DIY welded lugs .
Tubes are 1.5" by 0.035" 85,000 psi UTS .

Skin is not stressed and can be 5052H38 , as all highway
signs in US are ..

Engines , at cruise , have the intake cam
retarded for economy .
as Mr Atkinson invented ..