Buy a KR-87 and dump the old garbage. No other ADF could possibly still be
worth keeping.
Friendly as always,
karl
"RST Engineering" > wrote in message
...
> >asbestos britches on
>
> The problem right from the getgo is that the copperweld (which is steel
> wire with a copper coating) broke where it was rigidly attached to a
> nonmoving bolt. When the wire flexed in the breeze, this became the pivot
> point and eventually work hardened and crystallized that point of the wire
> to failure.
>
> Let's think of some ways to keep that from happening on the next
> antenna...
>
> 1. How about some wire that is a little more resistant to work hardening
> than copper over steel?
>
> 2. How about some sort of a flex joint where the wire attaches to the
> insulator?
>
> 3. How about some sort of strain relief at this point?
>
> 4. How about a noncrimp connection; the main stress on the crimp is where
> the wire is already weakened by flattening inside the crimp.?
>
> 5. How about a spring mechanism to keep a relatively constant tension on
> the wire?
>
>
> I've got MY answers to these questions, but I'd like to hear from the rest
> of the gang first.
>
> <asbestos britches off
>
> Jim
>
>
>
> "David Reinhart" > wrote in message
> ...
>> The sense antenna on our Cardinal broke right at the crimp connector
>> that attaches to the feedthrough insulator at the top front of the
>> airplane. This thing appears to be made of 18 gauge copperweld wire.
>> Since I still have the antenna and can pull measurements from it, is
>> there any reason I can't fabricate a replacement myself? Or does that
>> crimp connection have to be made with an aircraft-rated crimp tool?
>>
>> Dave Reinhart
>>
>>
>
>