Metal locking tie, doe they hold up?

[Joerg]

Since you need to buffer it somehow from shock have a look at pro-seal or
other FAA (since you talked about lacing cord) approved sealants. This
stuff will stick to fiberglass and metal. It's messy (I know from first
hand experience) but that ferrite is not going anywhere once this stuff
cures. Temp range is -65F to +275F

Just a thought....

http://www.wicksaircraft.com/catalog/product_detail.php/
pid=6801~subid=11807/index.html

or

http://www.aircraftspruce.com/menus/cs/fueltanksealants.html

Thanks, that looks good. Strange that a pint costs 60% more at Spruce,
that is usually a shop with good prices.

 

[Joerg]

Like the old SS Chimney mounts? I had to drop a gas tank once, and
broke the cheap galvanized OEM straps so I grabbed a Chimney mount set
from my stock and used it on the truck.

It would probably have outlasted the Chevy by a time factor of 50

 

[josephkk]

Like the old SS Chimney mounts? I had to drop a gas tank once, and
broke the cheap galvanized OEM straps so I grabbed a Chimney mount set
from my stock and used it on the truck.

Very like.

?-)

 

[josephkk]

It would probably have outlasted the Chevy by a time factor of 50

Maybe, dunno. There are such things as vibration and fatigue.

?-)

 

[legg]

They'd want endurance tests and that can get old. I'd rather not rely on
glues here.



Sure, but there is a major advantage: Aerospace certifications already
exist and that usually makes a very compelling case in front of a
notified body.



That's what I'll have to try but IME it hasn't mattered too much. The
loops go around the outside of the ferrite core, outside the magnetic
loop. I have shielded such cores in the past where the shield was total,
and cradled them closely. There was only some minor capacitive loading
with toroids (expected) but not with multi-aperture cores.



No adhesives. I'd be ok with a (serious) non-conductive clamp but they
don't seem to exist. Plastic tie-wrap are not so great because the can
dry out and then snap. Too flimsy. I took apart an older machine earlier
this year and at least half the tie-wraps had snapped and fallen onto
the bottom panel, leaving some harnesses dangling a bit.

There are adhesives that are designed for this work, but I've seen
some fall back on banding equipment. This usually to affix mechanical
mounting hardware in part fab ( and to hold it while the
varnish/adhesive dries in the part's fab). Your hardware would
obviously have to include include solderable posts or screw receptors.

Wouldn't recommend banding the finished product as an assembly step.
Too many problems possible, too late in the assembly method. A-kin to
hand soldering.

RL

 

[Joerg]

Any problem with using actual cable ties? They come in a range of sizes and
the bigger ones are strong enough to use as handcuffs.

Just saying.

They are plastic, dry out, become brittle and then snap. Seen it too
many times, can't take that risk here.