I'm not being sarcastic, but simply asking a question. Again, what's the use in
using a tape that I would think could be replaced with something much cheaper
for us poor folks. Not everyone in the US has a brief case stacked full of Ben
Franklins to apply to a project. This question was directed at everyone that
responded that they were using it, not just a single person. Sarcasm, social
ignorance? The very thing the Admin just posted about I do think, and I'll
about bet not one word will be said about it.........
Will
*********** REPLY SEPARATOR ***********
On 6/14/06 at 6:08 AM tim jenkins wrote:
>sarcasm is a sign of social ignorance, i dont think they have a pill for
>it.
>>
>> From: "Will Matney" <craxd1@verizon.net>
>> Date: 2006/06/13 Tue PM 02:31:22 EDT
>> To: amps@contesting.com
>> Subject: Re: [Amps] glass tape scotch 27
>>
>> What I'm wondering is why one would need a tape rated at 130 C (266 F)?
>The core should not get no where near that hot, maybe just warm to the
>touch which would be around 100-110 F (37.7-43.3C). Ferrite supposed to be
>non-conductive which would only leave sharp corners which can be removed
>easily with a piece of emory cloth if they have them. You can also place a
>wood dowell through the center of the toroid and use a wire brush wheel on
>a grinder to remove them very quickly from the O.D.. I generally just keep
>a piece of emory cloth on the bench and smooth them that way. It don't
>take too long to do it. I've seen many cores, both iron powder (which most
>has a painted coating), and ferrite without tape that has lasted for
>years. I wouldn't doubt that regular tape like the filament tape I
>mentioned would work just fine. Matter of fact, I know a company that used
>that tape to install the RF power meter in an amp which was mounted where
>the tubes were close, and heat actually mel
>> ted the meter back when the fan quit. The tape was still ok. I cant see
>one vibrating enough to cause this either. If it does, something like the
>blower or fan is way out of balance, and ought to be replaced. The newer
>varnishes on magnet wire is pretty tough, especially if it has Teflon
>insulation like Teflon hook up wire. On toroids, you need all the space
>you can get to hold the wire if it will be a good amount, so a thin tape
>ought to be used if possible like Kapton. That is if any need be used at
>all like a good amount which does not. On input tune cores, tape means a
>lot of space where they are small. On output tank coil toroids for 80 or
>160 meters, I've seen both taped and non-taped used. I just can't see
>where this expensive tape would be needed here for this purpose.
>>
>> Best,
>>
>> Will
>>
>> *********** REPLY SEPARATOR ***********
>>
>> On 6/13/06 at 7:14 AM tim jenkins wrote:
>>
>> >scotch 27 is high temp with thermosetting pressure-sensitive ashesive
>and
>> >operates at class b 130 deg C ( 266 deg F) temp. tim kv4bk
>> >scotch 27 glass cloth electrical tape
>> >
>> >kv4bk @ amps4u
>> >
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>> >Amps@contesting.com
>> >http://lists.contesting.com/mailman/listinfo/amps
>>
>>
>>
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>>
>
>kv4bk @ amps4u
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