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 Post subject: installing replacement electrolytic capacitors
PostPosted: Feb Sun 18, 2018 9:47 pm 
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Location: Pawleys Island, SC
Can I use a hot glue gun to secure new modern electrolytic capacitors in an antique radio?


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 Post subject: Re: installing replacement electrolytic capacitors
PostPosted: Feb Sun 18, 2018 9:51 pm 
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joegatto wrote:
Can I use a hot glue gun to secure new modern electrolytic capacitors in an antique radio?

I see no problem with doing so, but neither do I see an advantage.

Tubular electrolytics should be supported properly by their leads.

Can types need to be mounted to the chassis, as was done originally.

- Leigh

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 Post subject: Re: installing replacement electrolytic capacitors
PostPosted: Feb Sun 18, 2018 9:53 pm 
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You can, but it shouldn't be necessary because they are normally supported by their leads on terminal strips when the work has been done correctly.

The issue with using adhesive of any kind such as hot glue or RTV silicone sealant is it often makes the set look like someone unskilled has been working on it, which you probably don't want to happen.

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 Post subject: Re: installing replacement electrolytic capacitors
PostPosted: Feb Sun 18, 2018 10:18 pm 
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Location: Charleston, W.Va.
+1 to above advice from Leigh and Dennis.

I sometimes use hot glue to "tack" electrolytics together when re-stuffing them into an original multi-section metal-can enclosure. But this is concealed once the re-stuffing of the can is complete.

In no case do I recommend using hot glue to secure an electrolytic cap to a chassis and connecting wires to it via "floating leads". As previously mentioned, the leads of the electrolytic should always be soldered to a lug strip or some other terminal within the radio. Of course many of us have seen this done during prior service work, but it always smacks as "shoddy workmanship" to me.

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 Post subject: Re: installing replacement electrolytic capacitors
PostPosted: Feb Sun 18, 2018 10:25 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Pawleys Island, SC
It depends on the space available under the chassis to mound a terminal strip. In this case there is room on the wall of the chassis to glue the three caps but will the covering on the caps withstand the heat of the hot glue? thanks - Joe


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 Post subject: Re: installing replacement electrolytic capacitors
PostPosted: Feb Sun 18, 2018 11:19 pm 
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Location: Detroit, MI USA
Yes, I think it should. People use hot glue on crafts made from plastic which is similar to the caps. Just don't get the hot tip of the glue gun too close to the parts. If you keep it 1/4" or so back then the glue shouldn't transfer very much heat to the parts as it cools off on contact.

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 Post subject: Re: installing replacement electrolytic capacitors
PostPosted: Feb Mon 19, 2018 2:32 am 
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it is best to use a terminal strip or the leads of the capacitor to hold things in place.

it looks much better and is much neater.

steve

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 Post subject: Re: installing replacement electrolytic capacitors
PostPosted: Feb Tue 20, 2018 4:04 am 
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Location: Cleona, PA
If there's not a convenient hole for the screw to mount a terminal strip, it's easy to just drill one. Strips of all sizes are available from Radio Daze and others.

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