[ARC5] BC-454-B Dymamotor Question

Bob Macklin macklinbob at msn.com
Sat Jan 19 13:49:45 EST 2013 

John,

In Washington and California there is no safety check. On a smog check.

Kids here do drive cars/trucks over 25 years old.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
----- Original Message ----- 
From: "J. Forster" <jfor at quikus.com>
To: "Bob Macklin" <macklinbob at msn.com>
Cc: "Mike Hanz" <aaf-radio-1 at aafradio.org>; <arc5 at mailman.qth.net>
Sent: Saturday, January 19, 2013 10:38 AM
Subject: Re: [ARC5] BC-454-B Dymamotor Question


>I doubt they have exempted the safety standards and I doubt that many kids
> could affort a 25 year old hotrod, unless Bill Gates is their daddy,
> judging from what they sell for.
>
> In the northeast, cars are rust buckets long before 25 years.
>
> -John
>
> ================
>
>
>> In Washington and California they have a 25 year rule. You can do
> anything you want to a car over 25 years old.
>>
>> In my area we have several ORIGINAL hot rods some with flathead Ford
>> engines. They have no smog equipment and no inspection is required.
>>
>> Bob Macklin
>> K5MYJ
>> Seattle, Wa.
>> "Real Radios Glow In The Dark"
>> ----- Original Message -----
>> From: "J. Forster" <jfor at quikus.com>
>> To: "Mike Hanz" <aaf-radio-1 at aafradio.org>
>> Cc: <arc5 at mailman.qth.net>
>> Sent: Saturday, January 19, 2013 10:21 AM
>> Subject: Re: [ARC5] BC-454-B Dymamotor Question
>>
>>
>>> One reason for kids not working on cars anymore is the heavy boot of
>>> government. You cannot get plates without safety inspections and
>>> emissions
>>> checks, and if you modify anything, you will likely fail those tests.
>>>
>>> Even lawn mowers are regulated, so go-carts may be illegal in some
>>> places.
>>>
>>> So, government regulations have essentially stopped any experimentation
>>> or
>>> innovation.
>>>
>>> Lack of any hands-on skills is just collateral damage.
>>>
>>> YMMV,
>>>
>>> -John
>>>
>>> =====================
>>>
>>>
>>>
>>>> I have to agree with John on this. Reference the dynamotors, the
>>>> manuals
>>>> are full of notes like the need to maintain surgical cleanliness of
>>>> bearings, not spinning them with compressed air, and using a sleeve and
>>>> solid support to press on new bearings, just as examples.  It's not
>>>> rocket science.  The fit used with all the dynamotors I've worked on is
>>>> considered an HN 1 "light drive fit" in the interference fit grades
>>>> listed in Machinery's Handbook, so it doesn't take a big hydraulic
>>>> press
>>>> if the shaft is clean and polished.  I use the old WWII arbor press
>>>> shown at http://aafradio.org/garajmahal/arbor_press.htm and it presses
>>>> the bearings on without any real effort at all - just a bit of care.
>>>> The
>>>> training textbooks are surprisingly comprehensive in theory, unlike the
>>>> ones in use now that are simply gigantic flowsheets that doesn't take a
>>>> lot of training or functional knowledge to follow...this from my son, a
>>>> former ET on boomers.
>>>>
>>>> My father was a budget guy for the AFSWP (later DASA) in Albuquerque
>>>> after the war, but he worked on his own car (replaced all the pistons
>>>> and crankshaft at least twice while I was growing up), repaired just
>>>> about anything in the house, and was a whiz at cobbling together
>>>> something to make a recalcitrant device useful again.  Most of his
>>>> friends were that way as well.  Popular Science and Popular Mechanics
>>>> were full of building projects for father and son that involve mangling
>>>> wood or metal.  Maybe it was the Great Depression that made them that
>>>> way...  I'm having a hard time finding any kids today that have that
>>>> kind of "get your hands dirty" interest.
>>>>
>>>>   - Mike
>>>>
>>>> On 1/19/2013 12:20 PM, J. Forster wrote:
>>>>> I wouldn't bet on that assumption.
>>>>>
>>>>> In the 1920s and 1930s, Americans were not infected with afluenza.
>>>>> Also,
>>>>> technology was a lot simpler, and much more repairable.
>>>>>
>>>>> When a radio or toaster or table lamp broke, they fixed it or had it
>>>>> fixed. Also, many more grew up on farms, where machinery had to be
>>>>> repaired. Kids bought old cars, like Model Ts and As.
>>>>>
>>>>> The point is that skills to fix machinery were far more widespread
>>>>> than
>>>>> today.
>>>>>
>>>>> If your latest iToy breaks, it instantly becomes iPoo. If your car
>>>>> stops
>>>>> running, do you have any idea how to fix it, other than filling the
>>>>> gas
>>>>> tank? Can you even gat a wiring diagram or the 'puter diagnostic
>>>>> codes.
>>>>>
>>>>> Anyone who can strip and fix an engine, could probaly be trained in a
>>>>> few
>>>>> weeks to reliably refurbish dynos.
>>>>>
>>>>> Also, there were plenty of radio repair shops in civilian life
>>>>> pre-war.
>>>>> I'm certain some of those guys went into the services. Fixing a table
>>>>> radio was not very different than an ARC-5 receiver.
>>>>>
>>>>> There are pretty comprehensive TMs from the era on most things
>>>>> electronic.
>>>>> They would certainly give any reasonably intelligent person a fair
>>>>> grounding in the theory. You don't need to be a design engineer to
>>>>> understand most circuits. Analysis is far easier than synthesis.
>>>>>
>>>>> YMMV,
>>>>>
>>>>> -John
>>>>>
>>>>> ===================
>>>>>
>>>>>
>>>>>
>>>>>> I would have assumed most of the "techs" were none too savvy in that
>>>>>> era.
>>>>>> Ball bearings in general would have been quite novel in those days,
>>>>>> and
>>>>>> even
>>>>>> now, most people don't know how to handle, install, clean, lubricate,
>>>>>> or
>>>>>> pre-load them properly.  Radio specialists during the great war were
>>>>>> processed through signal corps school in a not too effective fashion,
>>>>>> and
>>>>>> even if they did retain most of what they were taught, they had
>>>>>> precious
>>>>>> little experience when they hit their duty station, and not too much
>>>>>> time
>>>>>> to
>>>>>> hone those skill afterward.  They probably did the best they could by
>>>>>> swapping parts.  I would assume the "tough dog" problems were
>>>>>> relegated
>>>>>> to
>>>>>> the junk pile.  The great logistics monster that was created during
>>>>>> WWII
>>>>>> eventually made deep troubleshooting and repair unnecessary (Witness
>>>>>> the
>>>>>> huge amount of surplus now in our hands that causes us to ponder
>>>>>> these
>>>>>> things now, some seventy years on.
>>>>>>
>>>>>>
>>>>>> Scott W7SVJ
>>>>>>
>>>>>> -----Original Message-----
>>>>>> From: arc5-bounces at mailman.qth.net
>>>>>> [mailto:arc5-bounces at mailman.qth.net]
>>>>>> On
>>>>>> Behalf Of Kenneth G. Gordon
>>>>>> Sent: Friday, January 18, 2013 5:33 PM
>>>>>> To: ARC5 at mailman.qth.net
>>>>>> Subject: Re: [ARC5] BC-454-B Dymamotor Question
>>>>>>
>>>>>> On 18 Jan 2013 at 16:22, WA5CAB at cs.com wrote:
>>>>>>
>>>>>>> Probably because the field installation of the bearings was done
>>>>>>> with
>>>>>>> a hammer and something like a 1/2" socket.  And they bent the outer
>>>>>>> shield and/or brinnelled the races.
>>>>>> Well, I had thought of that too, but I figured that not every radio
>>>>>> tech
>>>>>> in
>>>>>> those days was a dolt. ;-)
>>>>>>
>>>>>> Ken W7EKB
>>>>>> ______________________________________________________________
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>>>>>>
>>>>>
>>>>> ______________________________________________________________
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>>>>
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>>>
>>>
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