Archived posting to the Leica Users Group, 2003/12/07

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Subject: Re: [Leica] Crank, flywheel & gear advice
From: "Slobodan Dimitrov" <s.dimitrov@charter.net>
Date: Sun, 07 Dec 2003 07:55:44 -0800

Jerry, or anyone else;
Maybe you'd know these folks. Back in the mid 80's I photographed a very old
gentleman in his garage workshop. Apparently he had a contract to rebuild
prop engines for a trainer that the Navy still had. He was out in the
Glendal, Alta-Dena, maybe Pomona area. Any clues?
Slobodan Dimitrov


- ----------
>From: Jerry Lehrer <jerryleh@pacbell.net>
>To: leica-users@mejac.palo-alto.ca.us
>Subject: Re: [Leica] Crank, flywheel & gear advice
>Date: Sat, Dec 6, 2003, 10:28 PM
>

> John
>
> Having grown up with two stroke model airplane engines, the transition
> to motorcycle and automotive two stroke engines was not much of a
> problem. Though I am amazed at the 2 stroke supercharged diesel
> engines that powered some German airplanes!
>
> Jerry
>
> John Collier wrote:
>
>> As a long time automotive mechanic I disliked the part less wonders.
>> They coughed and spat and often declined to start let alone run. Now I
>> am starting to learn just how sophisticated and complex their seemingly
>> simple design really is. It is nice to learn new tricks.
>>
>> John Collier
>>
>> On Dec 6, 2003, at 8:13 PM, Jerry Lehrer wrote:
>>
>> > John
>> >
>> > I have learned to break the sharp edges with a .010 inch radius,
>> > otherwise
>> > at a teardown, the tech inspectors will rack your ass!
>> > Disqualification
>> > will
>> > follow.
>> >
>> > That, of course, if you are in a production class and win the race.
>> >
>> > Two strokes are in a world of their own, aren't they?
>> >
>> > Jerry
>> >
>> > John Collier wrote:
>> >
>> >> You have to bevel the port's horizontal edges or the rings will wear
>> >> quickly or, worse, break.
>> >>
>> >> John Collier
>> >>
>> >> On Dec 6, 2003, at 2:56 PM, Jerry Lehrer wrote:
>> >>
>> >>> BTW, beveling the ports will change the timing.
>> >>
>> >> --
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>> >
>>
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>
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