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 Post subject: AC radio as a drill speed controller?
PostPosted: May Tue 19, 2020 12:37 am 
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Any comments?


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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Tue 19, 2020 12:42 am 
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People had way too much free time back then.

It might do something on a transformer powered set, but likely not what one would want. I think they were figuring the more tubes that were in the radio, the lower the speed would be.

So, are you going to try it and report back with your findings?

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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Tue 19, 2020 12:58 am 
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I have a hard time thinking that was very effective.
R/ John


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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Tue 19, 2020 1:20 am 
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I'm more interested in how in these old articles they never got the necktie caught in a power tool.

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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Tue 19, 2020 3:33 am 
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Says AC radio, ST tubes before the AA5s. Is the current drawn by each tube that much of a drain to actually change the speed of a `40s AC-DC drill?

ID the radio.


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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Tue 19, 2020 3:37 am 
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Well, it has to be a set with a power transformer, and the number of tube filaments connected across the secondary will change the reflected inductance in the primary. That primary winding being in series with the drill motor is going to have some effect on the voltage provided to the motor.

Obviously this would not work well with a series string set........... :shock:

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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Tue 19, 2020 3:47 am 
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Forget the 'speed control.' I want a drill like that.
R/ John


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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Tue 19, 2020 3:57 am 
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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Tue 19, 2020 5:46 am 
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Mr. Detrola wrote:
Well, it has to be a set with a power transformer

I dunno, that looks like an awfully small chassis to contain a power transformer...

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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Tue 19, 2020 2:05 pm 
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The drawing states AC radio, clearly implies it has a transformer.

This is kind of thing I'd try. I have a '50s B&D drill, maybe'll find it's way into this experiment.

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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Wed 20, 2020 5:45 am 
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The question is What make and model chassis .. need to identify it first, then we can set up a proper test. 8)

Remember to wear a glove on the right hand, no, both hands, and a tie clip would be advisable, and maybe a rubber mat on the floor, too.

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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Wed 20, 2020 6:28 am 
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35Z5 wrote:
The drawing states AC radio, clearly implies it has a transformer.


AC could simply imply that it's not a battery set. I see 5 tubes and two IF transformers, in addition to the speaker and tuning cap. I don't see where a power transformer could fit. We need to ID it.

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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Wed 20, 2020 8:21 am 
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The tuning dial is concentric with the speaker. I cannot see an AC transformer. It appears to use pre-octal tubes (at least those that are visible in the photo). Were there AA5s like that? If so, does it help narrow things down a bit?
R/ John


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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Wed 20, 2020 8:51 am 
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flyboy71 wrote:
I'm more interested in how in these old articles they never got the necktie caught in a power tool.


They used tie clips! :)

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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Wed 20, 2020 7:36 pm 
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Mr. Highlander wrote:
flyboy71 wrote:
I'm more interested in how in these old articles they never got the necktie caught in a power tool.


They used tie clips! :)

In a pinch, can be used as ground clip.

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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Wed 20, 2020 7:53 pm 
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flyboy71 wrote:
I'm more interested in how in these old articles they never got the necktie caught in a power tool.


Back in those days, people dressed up for everything they did. Men wore neckties all day long, even around the house and on their days off work. I recall quite clearly back in the 1950's seeing neighbors on my block wearing a suit and tie to cut the grass or do outside work in the yard, or you would see them in the grocery store shopping all dressed up. Why they thought that was necessary, I didn't understand then and still don't.

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Dennis

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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Wed 20, 2020 9:24 pm 
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"You've either got, or you haven't got style!"- Bing Crosby, Frank Sinatra, and Dean Martin.

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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Wed 20, 2020 9:26 pm 
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Mr. Detrola wrote:
flyboy71 wrote:
I'm more interested in how in these old articles they never got the necktie caught in a power tool.


Back in those days, people dressed up for everything they did. Men wore neckties all day long, even around the house and on their days off work. I recall quite clearly back in the 1950's seeing neighbors on my block wearing a suit and tie to cut the grass or do outside work in the yard, or you would see them in the grocery store shopping all dressed up. Why they thought that was necessary, I didn't understand then and still don't.

I think it was more regional AFA "dress code". I never saw that here in SoCal, but up north in San Francisco, an eastern city on the west coast, it was more prevalent.

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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Wed 20, 2020 9:52 pm 
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Wasn't common in WVa, most of the residents in my town were coal miners or farmers in bib overalls.

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 Post subject: Re: AC radio as a drill speed controller?
PostPosted: May Thu 21, 2020 1:42 am 
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Looks a lot like this 1937 DeWald 618 Image


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