rec.crafts.metalworking - 11 new messages in 5 topics - digest

rec.crafts.metalworking
http://groups.google.com/group/rec.crafts.metalworking?hl=en

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Today's topics:

* Liberals Smarter Than Conservatives - 6 messages, 1 author
http://groups.google.com/group/rec.crafts.metalworking/t/30a39cd522bcf038?hl=en
* Crappy tools - 2 messages, 2 authors
http://groups.google.com/group/rec.crafts.metalworking/t/0f57b1503fb9e64b?hl=en
* Glenn Beck is onto me !!! - 1 messages, 1 author
http://groups.google.com/group/rec.crafts.metalworking/t/053ee271c3ed0e72?hl=en
* Vernier caliper accuracy - 1 messages, 1 author
http://groups.google.com/group/rec.crafts.metalworking/t/76e5fcfdb23ed51e?hl=en
* DIY Two-Stroke Engine Construction Methods - 1 messages, 1 author
http://groups.google.com/group/rec.crafts.metalworking/t/7e49cf5c0ea97580?hl=en

==============================================================================
TOPIC: Liberals Smarter Than Conservatives
http://groups.google.com/group/rec.crafts.metalworking/t/30a39cd522bcf038?hl=en
==============================================================================

== 1 of 6 ==
Date: Thurs, Mar 11 2010 10:00 pm
From: Cliff

On Thu, 11 Mar 2010 06:09:12 -0600, "RogerN" <regor@midwest.net> wrote:

>
>"Cliff" <Clhuprichguesswhat@aoltmovetheperiodc.om> wrote in message
>news:8j3hp51cnorlldfgo756lvm8u89r78rd6h@4ax.com...
>> On Wed, 10 Mar 2010 21:51:07 -0600, "RogerN" <regor@midwest.net> wrote:
>>
>>>
>>>"Aratzio" <a6ahlyv02@sneakemail.com> wrote in message
>>>news:74ngp51u2bstcdgl8pqplmutm84aqebfhv@4ax.com...
>>>> On Wed, 10 Mar 2010 19:01:31 -0600, in the land of alt.usenet.kooks,
>>>> "RogerN" <regor@midwest.net> got double secret probation for writing:
>>>>
>>>>>
>>>>>"Cliff" <Clhuprichguesswhat@aoltmovetheperiodc.om> wrote in message
>>>>>news:ae7fp55hgsnslu8u5njm531183dduh882q@4ax.com...
>>>>>> On Wed, 10 Mar 2010 11:20:26 +0000, Hang Dog
>>>>>> <righteous@wobble.nospam.net>
>>>>>> wrote:
>>>>>>
>>>>>>>Aratzio wrote:
>>>>>>>> On Tue, 9 Mar 2010 22:28:54 -0600, in the land of alt.usenet.kooks,
>>>>>>>> "RogerN" <regor@midwest.net> got double secret probation for
>>>>>>>> writing:
>>>>>>>>>>
>>>>>>>>>> Where do you draw the line? Specifically, what gives you the right
>>>>>>>>>> to
>>>>>>>>>> draw any line with regard to medical procedures?
>>>>>>>>>>
>>>>>>>>
>>>>>>>> Wow, Roger, you sure don't have many answers to the real questions.
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>With Roger you normally has to wait a few days before he responds to
>>>>>>>any
>>>>>>>detailed questions. It has something to do with having to go back to
>>>>>>>his
>>>>>>>pastor before he can reply. It can be very frustrating talking to
>>>>>>>Roger
>>>>>>>as he's simply a conduit for the bigotry of others.
>>>>>>>
>>>>>>>A few years ago he was praying that his online opponents got
>>>>>>>testicular
>>>>>>>cancer.
>>>>>>
>>>>>> Said voltages would float off to who-knows-where (I think it's near
>>>>>> Akron, OH)
>>>>>> and the gods would give him a new pancreas too.
>>>>>> --
>>>>>> Cliff
>>>>>
>>>>>Voltages on ungrounded items do float off to who know where.
>>
>> As demonstrated by Kirchhoff's circuit laws, right?
>> http://en.wikipedia.org/wiki/Kirchhoff's_circuit_laws
>>
>> If I hook one end of a 1 meg resistor to your ground what voltage did
>> the other end float off to?
>> If I unhook the ground will it fly off to Akron?
>>
>> I now live in constant fear !!!
>>
>> Is Akron a good place to buy electrical parts cheap that ended up there
>> when unwatched?
>> How old a babysitter must one hire?
>>
>>>> That would depend upon many things. But electrical potential can
>>>> dissipate and there are very specific known places it goes.
>>>
>>>I agree, it is Cliff that disagrees with us.
>>
>> I have a D cell battery right here.
>> Where did the voltage float off to?
>> Am I dead yet?
>
>It's OK cliff, most of the items you mention don't hold enough to give you a
>respectable static shock.

But you claimed they would float off to "who knows where" !!!

How much DOES a D cell battery hold? Is mine
busted?
It measures ZERO to good honest Alabama ground.
Perhaps the ground is unholy? Does it need to be blessed?
Watered with Holy Water?

>
>>>>>If it were not
>>>>>true then there would be no reason to put grounding and bonding clamps
>>>>>on
>>>>>things such as aircraft before refueling.
>>>>
>>>> You do know you just contradicted yourself?
>>>
>>>My position is that something that is not grounded can have an unknown
>>>voltage on it. Cliff's position is that ungrounded things are always at
>>>zero volts unless they have a hot wire driving them to some voltage.
>>
>> My D-cell seems to be at zero volts no matter which end I measure to
>> your ground.
>> It SAYS it's 1.5 volts.
>> Did I get scammed?
>
>Perhaps, you have to find a way to measure it without altering the voltage.

WHAT voltage?
Is SAYS it's 1.5 volts !!
You say it floated off to who knows where !!

Bring back my voltage !!! It is lost (probaby near
downtown Akron).
(Even worse if on the Y bridge in Zanesville, OH.)

This loss is your fault, right?
Giving my voltage wild ideas ....

>Or connecting a meter at both ends will show the voltage because of the
>relatively low resistance of the battery versus the relatively high
>impedance of the meter.

But that IS NOT to your ground !!!
That is a different subject entirely.

>>>>>Everyone that has been shocked by
>>>>>static electricity has experienced the voltages I was referring to. Why
>>>>>do
>>>>>you think they ship electronics in static sensitive bags?
>>>>>
>>>>>RogerN
>>>>>
>>>>
>>>> Wow, that is stupid on so many levels.
>>>>
>>>> They ship electronics in static bags to insure there is not a
>>>> differential in potential when the product is handled. If all items
>>>> are at the same potential then there is no current flow. All items
>>>> could have a potential of 1,000,000 volts to earth but if there is no
>>>> path to earth then there is no differential and the potential remains.
>>>>
>>>> You should also learn about ionic effect.
>>>
>>>Is that anything to do with a Faraday cage?
>>>
>>>Sorry, but it is Cliff's stupidity, not mine. According to Cliff
>>>everything
>>>everywhere is at 0V with respect to ground unless it has a hot wire
>>>holding
>>>it at some specific voltage. I asked this question because if Cliff were
>>>right there would be no need for anti-static bags, anti-static
>>>workstations,
>>>no need for bonding or grounding around flammables and explosives. But I,
>>>and the rest of the world, apparently including you, agree that there is
>>>such a thing as static electricity.
>>
>> Gee, that would be a transport of charge, right?
>>
>>>
>>>RogerN
>>>
>> --
>> Cliff
>
>If you want to have some fun vacuum out the developer from a copy machine,
>the powdered metal being removed from the mag roll gives you a good static
>electric demonstration.

Why should I want to generate static charges?

BTW, Why are you not grounded?

>RogerN
--
Cliff

== 2 of 6 ==
Date: Thurs, Mar 11 2010 10:12 pm
From: Cliff

On Thu, 11 Mar 2010 15:44:23 -0800, Aratzio <a6ahlyv02@sneakemail.com> wrote:

>On Wed, 10 Mar 2010 21:51:07 -0600, in the land of alt.usenet.kooks,
>"RogerN" <regor@midwest.net> got double secret probation for writing:
>
>>
>>"Aratzio" <a6ahlyv02@sneakemail.com> wrote in message
>>news:74ngp51u2bstcdgl8pqplmutm84aqebfhv@4ax.com...
>>> On Wed, 10 Mar 2010 19:01:31 -0600, in the land of alt.usenet.kooks,
>>> "RogerN" <regor@midwest.net> got double secret probation for writing:
>>>
>>>>
>>>>"Cliff" <Clhuprichguesswhat@aoltmovetheperiodc.om> wrote in message
>>>>news:ae7fp55hgsnslu8u5njm531183dduh882q@4ax.com...
>>>>> On Wed, 10 Mar 2010 11:20:26 +0000, Hang Dog
>>>>> <righteous@wobble.nospam.net>
>>>>> wrote:
>>>>>
>>>>>>Aratzio wrote:
>>>>>>> On Tue, 9 Mar 2010 22:28:54 -0600, in the land of alt.usenet.kooks,
>>>>>>> "RogerN" <regor@midwest.net> got double secret probation for writing:
>>>>>>>>>
>>>>>>>>> Where do you draw the line? Specifically, what gives you the right
>>>>>>>>> to
>>>>>>>>> draw any line with regard to medical procedures?
>>>>>>>>>
>>>>>>>
>>>>>>> Wow, Roger, you sure don't have many answers to the real questions.
>>>>>>>
>>>>>>
>>>>>>
>>>>>>With Roger you normally has to wait a few days before he responds to any
>>>>>>detailed questions. It has something to do with having to go back to his
>>>>>>pastor before he can reply. It can be very frustrating talking to Roger
>>>>>>as he's simply a conduit for the bigotry of others.
>>>>>>
>>>>>>A few years ago he was praying that his online opponents got testicular
>>>>>>cancer.
>>>>>
>>>>> Said voltages would float off to who-knows-where (I think it's near
>>>>> Akron, OH)
>>>>> and the gods would give him a new pancreas too.
>>>>> --
>>>>> Cliff
>>>>
>>>>Voltages on ungrounded items do float off to who know where.
>>>
>>> That would depend upon many things. But electrical potential can
>>> dissipate and there are very specific known places it goes.
>>
>>I agree, it is Cliff that disagrees with us.
>
>No, you stated they "float off to who knows where".
>
>>
>>>>If it were not
>>>>true then there would be no reason to put grounding and bonding clamps on
>>>>things such as aircraft before refueling.
>>>
>>> You do know you just contradicted yourself?
>>
>>My position is that something that is not grounded can have an unknown
>>voltage on it.

From the Poetry of Donald Rumsfeld, right?

At what voltage is the ground?
It is ungrounded.

>>Cliff's position is that ungrounded things are always at
>>zero volts unless they have a hot wire driving them to some voltage.
>
>You are wrong. They are at whatever the potential difference between
>the source and the reference. If there is no reference, they have no
>potential.

http://en.wikipedia.org/wiki/Kirchhoff's_circuit_laws
Kirchhoff's voltage law (KVL)
See the diagram to the right.
Measure the voltage from point d to his ground (not shown).
What is it?

Now remove your probe from point d & measure from point b to his ground
(not shown).
What is the voltage?

>>>>Everyone that has been shocked by
>>>>static electricity has experienced the voltages I was referring to. Why
>>>>do
>>>>you think they ship electronics in static sensitive bags?
>>>>
>>>>RogerN
>>>>
>>>
>>> Wow, that is stupid on so many levels.
>>>
>>> They ship electronics in static bags to insure there is not a
>>> differential in potential when the product is handled. If all items
>>> are at the same potential then there is no current flow. All items
>>> could have a potential of 1,000,000 volts to earth but if there is no
>>> path to earth then there is no differential and the potential remains.
>>>
>>> You should also learn about ionic effect.
>>
>>Is that anything to do with a Faraday cage?
>
>No. That is grounded isolation.

It need not be grounded.

>Static conductive materials are not in
>and of themselves grounded. They are a distrubuted field.

??

>
>>
>>Sorry, but it is Cliff's stupidity, not mine. According to Cliff everything
>>everywhere is at 0V with respect to ground unless it has a hot wire holding
>>it at some specific voltage. I asked this question because if Cliff were
>>right there would be no need for anti-static bags, anti-static workstations,
>>no need for bonding or grounding around flammables and explosives. But I,
>>and the rest of the world, apparently including you, agree that there is
>>such a thing as static electricity.
>
>Everything has potential. The potential is measured against a
>reference.

See above circuit to ground measurements.

>>
>>RogerN
>>
--
Cliff

== 3 of 6 ==
Date: Thurs, Mar 11 2010 10:13 pm
From: Cliff

On Thu, 11 Mar 2010 07:32:54 +0000, Hang Dog <righteous@wobble.nospam.net>
wrote:

>RogerN wrote:
>> "Hang Dog" <righteous@wobble.nospam.net> wrote in message
>>>
>>> A few years ago he was praying that his online opponents got testicular
>>> cancer.
>>
>> Wrong, I asked if he would want me to pray for him to get testicular cancer.
>> I was just testing his anti-faith, not praying for harm on anyone.
>>
>
>You believe that you have an invisible friend that is a) capable of
>doing that, and b) would do so at your request? Damn that is so messed
>up, on so many levels.

Let's make a voodoo doll of RogerN ....

He's twitching already.
--
Cliff

== 4 of 6 ==
Date: Thurs, Mar 11 2010 10:15 pm
From: Cliff

On Thu, 11 Mar 2010 05:56:31 -0600, "RogerN" <regor@midwest.net> wrote:

>
>"Hang Dog" <righteous@wobble.nospam.net> wrote in message
>news:7vrkfnFk8pU1@mid.individual.net...
>> RogerN wrote:
>>> "Hang Dog" <righteous@wobble.nospam.net> wrote in message
>>>>
>>>> A few years ago he was praying that his online opponents got testicular
>>>> cancer.
>>>
>>> Wrong, I asked if he would want me to pray for him to get testicular
>>> cancer. I was just testing his anti-faith, not praying for harm on
>>> anyone.
>>>
>>
>> You believe that you have an invisible friend that is a) capable of doing
>> that, and b) would do so at your request? Damn that is so messed up, on so
>> many levels.
>
>Not part b, but God is certainly capable of doing that, but it is in line
>with his doing to heal from cancer.

Cancers go into remission all the time.

>I've received a couple healings myself
>and twice when I didn't know how to get to the place I needed to go, I
>prayed for direction and got a vision of what road to turn on to get there,
>maybe it's prayer GPS.

Or you learned how to read a map. Or saw the street sign.

>RogerN
--
Cliff

== 5 of 6 ==
Date: Thurs, Mar 11 2010 10:18 pm
From: Cliff

On Thu, 11 Mar 2010 06:51:14 -0500, Occam's Razor
<If-It-Looks-And-Smells-Like-Dogshit@blackhole.Talk-n-Dog.com> wrote:

>On 3/11/2010 1:54 AM, Cliff wrote:
>> On Wed, 10 Mar 2010 21:57:59 -0600, "RogerN" <regor@midwest.net> wrote:
>>
>>> Anyway you appeared to agree that women should have the right to abortion
>>> and then wrote that the consent to have sex was the consent to become a
>>> parent. Men's choice ends at the choice to have sex, libtards want women's
>>> rights to continue far beyond that, and some even want taxpayers to pay for
>>> their careless sex. So, to be fair, what is wrong with a man choosing to
>>> not be responsible for the child that the mother decided to have?
>>
>> Rape & incest seem popular in Alaska.
>> It's a red State, right?
>
>
>60-70% of Alaska is Federal land and National parks.... unless Caribou
>are Republicans..... Are Eskimo's Liberals, they do have that live off
>the land and don't treat the land with contempt kind of Liberal thought
>pattern don't they, or is that just Liberals projecting their beliefs
>onto an indigenous people?

Alaska has very high rape & incest rates. The highest of any US State.

BTW, the natives fear the global warming Palin denies.
--
Cliff

== 6 of 6 ==
Date: Thurs, Mar 11 2010 10:21 pm
From: Cliff

On Wed, 10 Mar 2010 18:57:19 -0800, Aratzio <a6ahlyv02@sneakemail.com> wrote:

>The choice of sex is the proximate cause. Pregnancy is the result.
>Unless you know of some magical impregnation without sex?

I posted about cabbages <G>.
--
Cliff

==============================================================================
TOPIC: Crappy tools
http://groups.google.com/group/rec.crafts.metalworking/t/0f57b1503fb9e64b?hl=en
==============================================================================

== 1 of 2 ==
Date: Thurs, Mar 11 2010 10:16 pm
From: Jon Anderson

Larry Jaques wrote:

> I'm up over 350 items bought, usually for 5-25% of the cost, and about
> half of them brand new.

I've bought at least that much. Buying on ebay has been a genuine
benefit to my business. It's finding worthwhile items on ebay that are
close enough to pick up that's rare. And there's been a LOT of things on
ebay I would have bid on, but seller stipulated pick up only, no
shipping. Driving to Michigan in the winter in a Ford Escort to pick up
a lathe is not exactly a workable proposition... <G>

Jon

== 2 of 2 ==
Date: Thurs, Mar 11 2010 10:19 pm
From: Gerald Miller

On Thu, 11 Mar 2010 15:48:18 -0500, clare@snyder.on.ca wrote:

>My wife and daughters bought me a 1/2 hammerdrill for my
>birthday/fathers day last June.
>
>I used it a couple times last summer/fall, and then today I wanted to
>use it to drill a 1 1/2 hole in a spruce 2X8. Put it in low gear (for
>the first time) and founf out there were teeth missing on a gear
>somewhere. Just a lot of noise, and no drive.
>
>It was a Black and Decker DR650-ca -= 6.5 amp unit that They paid $80
>for.(on sale).
>
>Took it back to Canadian Tire where they bought it, and they don't
>carry it any more. After a lot of hassle, I paid the difference ($20)
>to get a Porter Cable PC650 - looked like virtually the same drill
>except for the location of the reverse switch.
>
>I gor ONE HOLE drilled, and noticed something poking out through the
>side of the drive gear case which LOOKED like it was aluminum, but was
>in fact aluminized chrappy plastic.
>
>Looks like I'll have to cruise the Garage sales this spring and try to
>find myself a 30 year old half inch drill - - - - - - .
>The one the B&D replaced was almost 50 years old and had been used
>professionally by my dad as an electrical contractor for about 35
>years of that until his retirement. In hindsight, I should have spent
>whatever it took to have it rewound instead of scrapping it. (It just
>up and quit one day when I was using it - let the magic smoke out)
I am happy with the Makita I bought for around $50.00 about 20+ years
ago at the Pascal's outlet in Brampton. Junior's FiL has the exact
same dual range, variable speed, reversible with or without hammer
action 1/2" drill and has used it a lot more than I've used mine, and
his is still going strong.
Gerry :-)}
London, Canada

==============================================================================
TOPIC: Glenn Beck is onto me !!!
http://groups.google.com/group/rec.crafts.metalworking/t/053ee271c3ed0e72?hl=en
==============================================================================

== 1 of 1 ==
Date: Thurs, Mar 11 2010 10:42 pm
From: Cliff

On Wed, 10 Mar 2010 18:06:27 -0500, Cliff
<Clhuprichguesswhat@aoltmovetheperiodc.om> wrote:

>
>http://beck.cnnbcvideo.com/?p=fb1fcbc06ef608526dd4c374fa07da89&id=19312-5850877-GYRop3x

Select the "No Facebook" option <g>.
--
Cliff

==============================================================================
TOPIC: Vernier caliper accuracy
http://groups.google.com/group/rec.crafts.metalworking/t/76e5fcfdb23ed51e?hl=en
==============================================================================

== 1 of 1 ==
Date: Thurs, Mar 11 2010 10:49 pm
From: "Ed Huntress"

"Bill McKee" <bmckeespamnot@ix.netcom.com> wrote in message
news:GqCdnWhYvMv4TwTWnZ2dnUVZ_oGdnZ2d@earthlink.com...
>
> "Ed Huntress" <huntres23@optonline.net> wrote in message
> news:4b99afdf$0$5003$607ed4bc@cv.net...
>>
>> "Bill McKee" <bmckeespamnot@ix.netcom.com> wrote in message
>> news:iuWdnXlu0JJoNgTWnZ2dnUVZ_jOdnZ2d@earthlink.com...
>>>
>>> "Ed Huntress" <huntres23@optonline.net> wrote in message
>>> news:4b99a83e$0$22515$607ed4bc@cv.net...
>>>>
>>>> "Christopher Tidy" <cdt22NOSPAM@cantabgold.net> wrote in message
>>>> news:4B99704A.80202@cantabgold.net...
>>>>> Ed Huntress wrote:
>>>>>
>>>>>> A darned good question. I wish the piston man would step in here
>>>>>> (Anthony?). He's a world-class expert on this subject.
>>>>>>
>>>>>> In high-volume production, they've traditionally been turned on
>>>>>> special lathes with cam-operated cross slides. That requires a cam
>>>>>> for each piston profile. Takisawa makes, or made, a programmable
>>>>>> machine that, IIRC, uses solenoid-actuated slides. It's slow. There
>>>>>> also have been some piezoelectric actuators. And that was all ten
>>>>>> years ago. There may be something new.
>>>>>>
>>>>>> I was involved with these things due to a joint project we had going
>>>>>> at Wasino lathes, where I worked in those days. We were using a
>>>>>> magnetostrictive actuator, made of the material used in submarine
>>>>>> sonar. It worked great but programming the hysteresis out of it was a
>>>>>> nightmare. The project was dropped about the time I left.
>>>>>>
>>>>>> Anyway, the challenge has been to come up with a programmable system
>>>>>> that provides adequate thrust at high turning speeds. They're doing
>>>>>> it, I think; I just haven't kept up.
>>>>>
>>>>> Thanks for the information. Sorry I've been slow to reply; I've been
>>>>> away. I worked myself as part of a team developing electrostatic
>>>>> actuators a few years back. The actuators consisted of a sheet of a
>>>>> rubbery material with conductive coatings on each side. When subjected
>>>>> to a high DC voltage, the conductive coatings could be made to attract
>>>>> or repel, squeezing or stretching the material (the actuation
>>>>> direction was perpendicular to the electric field, as this gave a
>>>>> greater movement). One idea was to use these actuators to move a car
>>>>> wing mirror, although I'm unsure if a prototype was made as I'd left
>>>>> the laboratory by then. But the actuators we had at that time were
>>>>> definitely too flexible to be used for moving a lathe tool.
>>>>
>>>> It requires a lot of force. The material we used, Terfenol-D, is one of
>>>> the few that can deliver the force with good speed (several thousand
>>>> cycles per second with high force; up to 20 kHz at lower force levels,
>>>> IIRC). Piezoelectrics, which are the other option, are used in stacks
>>>> to get the required travel, but they're a little fragile for the
>>>> application:
>>>>
>>>> http://en.wikipedia.org/wiki/Magnetostriction
>>>>
>>>> Terfenol is the material used in advanced sonar detectors. We were
>>>> first looking at it as a counter-vibratory attachment, but my boss got
>>>> the idea that it would work for turning elliptical pistons. We had a
>>>> demo machine at IMTS 2000, I think, and it attracted a lot of
>>>> attention. We could get it to work extremely well and with high
>>>> accuracy and repeatability. But if you make a small change in the
>>>> program, magnetic hysteresis would complicate the programming, making
>>>> the whole thing problematic.
>>>>
>>>> --
>>>> Ed Huntress
>>>>
>>>
>>> I worked on a product using the Polaroid Piso distance sensors. 1980's.
>>> Problem was the ringing in the piso unit required a separate sender and
>>> a receiver for up close sensing, which is what I was trying to do.
>>> Figured out was not a big enough market to continue on the idea. As to
>>> fast, heavy duty, accurate movers, Voice coils work great. Use a linear
>>> transformer as the sensor. Was the way we build disk drives in the
>>> 1970's early 80's. The magnet on a CDC 200 megabyte drive probably
>>> weighs 25-30 pounds total.
>>
>> There were some reasons that solenoid-type actuators weren't ideal. I
>> think it was the response rate with the weight of the actuator required
>> for the job, but it's been too long for me to trust my memory.
>>
>> I see that Takisawa is still making their line of oval-piston machines
>> (TPS Series). Maybe there's something on their website about the
>> actuator:
>>
>> http://www.takisawa.co.jp/-e/index-e02.htm
>>
>> --
>> Ed Huntress
>>
>
> Voice coils and solenoids are totally different beasts.

Right. Don reminded me of that. But as I said to him, the biggest car
manufacturers and lathe builders have all tried everything they can think
of. We're talking about a manufacturing issue that's worth many tens of
millions, if not hundreds of millions, of dollars. There are an awful lot of
pistons made and, until the EPA relented, even Homelite was exploring our
machines for making pistons for string-trimmer engines. All of the car
manufacturers, all over the world, are caught up in it. They want
programmable machines.

If Takisawa is still selling their TPS machines, it seems likely that no
one has succeeded in building anything better. And they all have some
engineer or another who knows how a voice coil works. <g>

--
Ed Huntress

==============================================================================
TOPIC: DIY Two-Stroke Engine Construction Methods
http://groups.google.com/group/rec.crafts.metalworking/t/7e49cf5c0ea97580?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Mar 12 2010 12:12 am
From: Oliver Arend

> not sure what they do with ultralights, or light sport...

LSA in the US (and any country that adopted these rules, I presume)
require their engines to comply with the industry standard ASTM F 2339
"Standard Practice for Design and Manufacture of Reciprocating Spark
Ignition Engines for Light Sport Aircraft". This it not an FAA
certification.

Oliver

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