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Excellent 2 cycle read

 
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mike clements



Joined: 08 Jan 2005
Posts: 281
Location: United States, Arizona, San Tan Valley

PostPosted: Wed Jun 12, 2013 7:33 pm    Post subject: Excellent 2 cycle read Reply with quote

For the 2 stroke racers who enjoy the history of the performance gains found in these engines, here is a very nice reading book that covers the subject in an entertaining manner.
This book is titled, "Stealing Speed" and is written by Mat Okley.

I am constantly reading anything I can find on racing engines of all descriptions. This particular book details the information of exactly how the German 2 cycle technology used during WWII was smuggled out of Germany and into the rest of Europe after the war.

The little engines were used to power drones with warheads from Germany over to London during the war. The scientists who were developing this HP knew they were ordered by Hitler to be killed by his SS guards as soon as it looked like they might lose the war.

The birth of the expansion chamber and all sorts of port configurations are discussed at length.
Once the German 2 cycle technology came to England and Italy after the war, the Japanese multi-cylinder 4 strokes began to be defeated on the Moto GP tracks.

Anyway, it's a good read. Cool
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Walt Gifford



Joined: 19 Jul 2002
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Location: United States, South Jerrrsey,

PostPosted: Thu Jun 13, 2013 5:13 am    Post subject: Re: Excellent 2 cycle read Reply with quote

mike clements wrote:
The scientists who were developing this HP knew they were ordered by Hitler to be killed by his SS guards as soon as it looked like they might lose the war.


We should do that every 5 years to level the playing field in Sr Sportsman.
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Jim McMahon



Joined: 07 Apr 2007
Posts: 2869
Location: United States, St. Paul,

PostPosted: Thu Jun 13, 2013 6:42 am    Post subject: Re: Excellent 2 cycle read Reply with quote

Walt Gifford wrote:
We should do that every 5 years to level the playing field in Sr Sportsman.


You owe me a keyboard and a quadruple espresso!
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al nunley



Joined: 13 Nov 2006
Posts: 3076

PostPosted: Thu Jun 13, 2013 6:46 am    Post subject: Reply with quote

Iíve read some SAE stuff that showed what the Japanese were doing in the 50ís on two strokes. I always thought the Italians got there 2 cycle training from the Japanese, not the Germans.
Yamaha once had a 125cc 4 cylinder two stroke with a 9 speed transmission. It was fast, but real hard to drive.
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Greg Lindahl



Joined: 13 Jan 2011
Posts: 274

PostPosted: Thu Jun 13, 2013 8:22 am    Post subject: Reply with quote

Mike.
If you want to become an "layman/expert", "Race Engine Technology" is a great periodical. "The High-Speed Internal Combusion Engine", by Ricardo is excellent.
This site could use more data-based knowledge.
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mike clements



Joined: 08 Jan 2005
Posts: 281
Location: United States, Arizona, San Tan Valley

PostPosted: Thu Jun 13, 2013 8:35 am    Post subject: Reply with quote

Thanks Greg. I read the book by Sir Harry Ricardo. Man, that book is good for some laughs Laughing

No disrespect to Mr Ricardo. Just many advancements since his theories.

My dad raised me in the engine room of his NASCAR team starting in 1958.
Man, do I ever miss my dad. Crying or Very sad
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Greg Lindahl



Joined: 13 Jan 2011
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PostPosted: Thu Jun 13, 2013 2:11 pm    Post subject: Reply with quote

Hi Mike.
The theories are still the same. Flame speed, ignition advance, pre-igntion, detonation, additives, lubricants, leak by, valve timing, compression. We have some new materials, but piston speed has not moved on nearly as much as you might expect, for example.
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mike clements



Joined: 08 Jan 2005
Posts: 281
Location: United States, Arizona, San Tan Valley

PostPosted: Thu Jun 13, 2013 2:58 pm    Post subject: Reply with quote

Hi Greg. The book is really an excellent read if you are into the History of it. The near death experiences these men had while trying to smuggle information from the commie side to the allies is incredible.

As far as the Japanese 2 cycles, they were building multi cylinder 4 strokes and winning in European grand prix bike racing. The 2 cycle info that came out of Germany gave the 2 strokes and edge and that required the Japanese to turn to the 2 cycle engines.

It's just a fun and informative read.

thanks, MC
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mike best



Joined: 07 Dec 2008
Posts: 64
Location: Australia, not USA,

PostPosted: Thu Jun 13, 2013 6:56 pm    Post subject: Reply with quote

mike clements wrote:
The 2 cycle info that came out of Germany gave the 2 strokes and edge and that required the Japanese to turn to the 2 cycle engines.

and quite a bit of the Yamaha technology came out of Queens University Belfast !
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Walt Gifford



Joined: 19 Jul 2002
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PostPosted: Fri Jun 14, 2013 5:28 am    Post subject: Reply with quote

Another good book is Two Stroke Power Units by P.E. Irvine. There's a short mention of kart racing.


Gif Cool
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