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From: Catrike Ryder <Soloman@old.bikers.org>
Newsgroups: rec.bicycles.tech
Subject: Re: Job Offer
Date: Tue, 18 Mar 2025 11:34:12 -0400
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On Tue, 18 Mar 2025 16:03:56 +0100, Rolf Mantel
<news@hartig-mantel.de> wrote:

>Am 18.03.2025 um 15:34 schrieb Roger Merriman:
>> Catrike Ryder <Soloman@old.bikers.org> wrote:
>>>> accredited engineering programOn Tue, 18 Mar 2025 19:12:18 +0700, John B.
>>>> <slocombjb@gmail.com> wrote:
>>>
>>>> On Tue, 18 Mar 2025 08:00:55 -0400, Catrike Ryder
>>>> <Soloman@old.bikers.org> wrote:
>>>>
>>>>>> accredited engineering programOn Tue, 18 Mar 2025 07:22:33 -0400,
>>>>>> Catrike Ryder <Soloman@old.bikers.org> wrote:
>>>>>
>>>>>> On Tue, 18 Mar 2025 16:52:40 +0700, John B. <slocombjb@gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> On Tue, 18 Mar 2025 04:05:22 -0400, Catrike Ryder
>>>>>>> <Soloman@old.bikers.org> wrote:
>>>>>>>
>>>>>>>>> I never said I though I was loved by God.On Tue, 18 Mar 2025
>>>>>>>>> 08:52:46 +0700, John B. <slocombjb@gmail.com> wrote:
>>>>>>>>
>>>>>>>>> On Mon, 17 Mar 2025 12:06:55 -0500, AMuzi <am@yellowjersey.org> wrote:
>>>>>>>>>
>>>>>>>>>> On 3/17/2025 12:03 PM, Catrike Ryder wrote:
>>>>>>>>>>> On Mon, 17 Mar 2025 11:35:21 -0500, AMuzi <am@yellowjersey.org> wrote:
>>>>>>>>>>>
>>>>>>>>>>>> On 3/17/2025 11:07 AM, Frank Krygowski wrote:
>>>>>>>>>>>>> On 3/17/2025 10:30 AM, AMuzi wrote:
>>>>>>>>>>>>>> On 3/16/2025 10:01 PM, Frank Krygowski wrote:
>>>>>>>>>>>>>>> On 3/16/2025 4:28 PM, Catrike Ryder wrote:
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Education isn't an accomplishment, it's a tool.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> It's both. Education can't be simply given to a person.
>>>>>>>>>>>>>>> It can be greatly helped by a competent teacher, but the
>>>>>>>>>>>>>>> person still has to work to achieve it. Doing that
>>>>>>>>>>>>>>> successfully is an accomplishment.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> What's odd is that this discussion group has a few
>>>>>>>>>>>>>>> denizens who think they can accomplish just as much
>>>>>>>>>>>>>>> without that tool.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> In modern parlance, they actually are the tools.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> I don't think it's binary or Manichean.  That is, both or
>>>>>>>>>>>>>> all can be true in different examples.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Examples abound of both autodidacts with gaping holes in
>>>>>>>>>>>>>> their repertoire (me) and others who accomplished much
>>>>>>>>>>>>>> from the same background (Franklin).
>>>>>>>>>>>>>
>>>>>>>>>>>>> Benjamin Franklin was brilliant. It's been pointed out that
>>>>>>>>>>>>> his science accomplishments alone would have won Nobel
>>>>>>>>>>>>> Prizes had they existed.
>>>>>>>>>>>>>
>>>>>>>>>>>>> But any modern American is a fool if he says "Franklin was
>>>>>>>>>>>>> great and he learned it all himself. So I don't need no
>>>>>>>>>>>>> schooling."
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Right, that would be a logical leap in most cases.
>>>>>>>>>>>>
>>>>>>>>>>>> Still and all, situations, capacity, attitude and resources
>>>>>>>>>>>> vary so much that a certificate or a degree may not hold a
>>>>>>>>>>>> good return for everyone.
>>>>>>>>>>>>
>>>>>>>>>>>> Again this is the difference between education broadly and
>>>>>>>>>>>> certification specifically.  No one wants a heart surgeon or
>>>>>>>>>>>> structural engineer who sorta gets the general idea in his
>>>>>>>>>>>> field:
>>>>>>>>>>>>
>>>>>>>>>>>> https://www.youtube.com/shorts/-BpW_cM7iYc
>>>>>>>>>>>
>>>>>>>>>>> I very clearly remember the moment when I reached awareness. It was in
>>>>>>>>>>> fourth grade and I was assigned a couple of pages of long division,
>>>>>>>>>>> which I was ordered to copy out of the book and "<LOL> solve....  I
>>>>>>>>>>> did a couple and then it hit me. I know how to do this and doing it
>>>>>>>>>>> over and over serves no purpose. That's when I started ignoring the
>>>>>>>>>>> assignments and going ahead in the book on my own. I did very little
>>>>>>>>>>> homework from that day on, but I did well on all the tests. The
>>>>>>>>>>> ignorant teachers insisted on basing too much of the grades on the
>>>>>>>>>>> "daily work, instead of simply how much was learned. I think it hurt
>>>>>>>>>>> their feelings that I ignored their instructions.
>>>>>>>>>>>
>>>>>>>>>>> Most of what I know, I learned by reading and experimenting. Yeah, I
>>>>>>>>>>> know that wouldn't work for doctors, nurses, and dentists, but those
>>>>>>>>>>> kinds of professions are too restrictive for me anyway.
>>>>>>>>>>>
>>>>>>>>>>> --
>>>>>>>>>>> C'est bon
>>>>>>>>>>> Soloman
>>>>>>>>>>
>>>>>>>>>> Good point, and you understand the difference. See also
>>>>>>>>>> airplane mechanics.
>>>>>>>>>
>>>>>>>>> "Most of what I know, I learned by reading and experimenting."
>>>>>>>>>
>>>>>>>>> Airplane mechanic?
>>>>>>>>>
>>>>>>>>> And the pilots don't complain? ():-)
>>>>>>>>
>>>>>>>> I never worked on an airplane, but I wrenched on cars and trucks and
>>>>>>>> boats and tractors and snowmobiles and motorcycles and bicycles. I
>>>>>>>> didn't need a school teacher for any of that.
>>>>>>>
>>>>>>> I am genuine,, Federal licensed, Airplane Mechanic (:-)  Air plane
>>>>>>> mechanizing  is more a  matter of doing work correctly and maybe more
>>>>>>> important not doing things wrong. For example there are limits on how
>>>>>>> many and what sort welds can be made in a steel tube aircraft
>>>>>>> fuselage. Or the correct process to weld an internal combustion engine
>>>>>>> exhaust and so on and everything that might come loose has to be
>>>>>>> secures with safety wire, or other safety system to avoid things
>>>>>>> falling off in flight (Upsets the pilots greatly when parts start
>>>>>>> falling off in flight  :-)
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> I know a bit about piston engines in general, but there are many
>>>>>> variations and many I have not worked on.
>>>>>
>>>>> I find motorcycle engines very interesting, there are parallel, boxer,
>>>>> and offset V configurations and many different versions of each. My
>>>>> Virago VTwin used a single crank pin like the Harley's but fired on
>>>>> different rotations while the Harley's fired both on the same
>>>>> rotation. They seemed very proud of their engines' unique sound and
>>>>> pretend not to notice the resulting vibration. The early Norton vtwins
>>>>> had offset crank pins to go with the offset V cylinders. They don't
>>>>> make stuff like they used to make stuff.
>>>>
>>>> Yup the old Harleys had no Distributor and fired both spark plugs at
>>>> the same time - one on the exhaust stroke and one on the power stroke.
>>>
>>> To clarify. I believe the early Harleys fired twice on each cylinder
>>> on each sequence. Each cycilnder got one firing at the correct time
>>> and one firing on each cylinder either before or after the correct
>>> time.
>
>> How does that work then? If the first ignition has ignited all or at least
>> most of the fuel? Or did it introduce a 2nd batch of fuel?
>
>A 4-stroke engine needs its ignition at the end of stroke 1 (cylinder 
>compressed and full of fuel-air mix).  At the end of stroke 3 (cylinder 
>at minimum volume but empty from pushing out the exhaust) there is 
>nothing to ignite so an igntion at this point of time have not use but 
>also no harm.
>
>So with two cylinders offest by 180 degrees (boxer engine), you can skip 
>the distributor.
>

Harley's are not boxers.  

--
C'est bon
Soloman