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post #1521 of 7082 (permalink) Old 11-26-2012, 05:49 PM
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post #1522 of 7082 (permalink) Old 11-26-2012, 06:05 PM
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post #1523 of 7082 (permalink) Old 11-26-2012, 06:33 PM
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Best photo so far. Nice bike also.
post #1524 of 7082 (permalink) Old 11-26-2012, 06:48 PM
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"...The later 2 stroke GP monsters like the NSR500, RG500 and YZR500 were all basically developments of the original ground breaking MZ 125 technology first developed in East Germany by..."
Genuninly curious as to how the RG500, a rotary valve, square four, is related to these bikes?

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post #1525 of 7082 (permalink) Old 11-26-2012, 06:53 PM
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Iconic when polished. Mesmerizing when chromed. Set them up properly and they are sufficient (are yours?).
My comicals actually work ok, as you said, "Set them up properly".
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post #1526 of 7082 (permalink) Old 11-26-2012, 06:56 PM
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Genuninly curious as to how the RG500, a rotary valve, square four, is related to these bikes?

I am not really sure but could it be that the bike was a 2 stroke? Seems that was what I took the ops thrust to be about. 2 Strokes.
post #1527 of 7082 (permalink) Old 11-26-2012, 07:03 PM
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I am not really sure but could it be that the bike was a 2 stroke? Seems that was what I took the ops thrust to be about. 2 Strokes.
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post #1528 of 7082 (permalink) Old 11-26-2012, 07:22 PM
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post #1529 of 7082 (permalink) Old 11-26-2012, 07:41 PM
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post #1530 of 7082 (permalink) Old 11-26-2012, 09:40 PM
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Genuninly curious as to how the RG500, a rotary valve, square four, is related to these bikes?
The MZ RE 125 was a twin reverse cylinder rotary valve water cooled bike with a highly tuned expansion chamber and very efficient scavenging
.
this is an early one:


Up until 1962 Suzuki were abymsmal failures on the GP circuits.

In '61 Suzuki built clones of the MZs using the info smuggled out of East Germany by Degner (he brought not just inside knowledge but expansion chamber blueprints, hardware including pistons and a rotary valve and details of the loop scavenging port system MZ had perfected). They created bikes like the RT61 and RT62.

The engine was a mirror image of the MZ with the intake on the left rather than the right but otherwise very similar (and way different to their earlier bikes).

With the new bikes, Suzuki suddenly went from being the joke of the GP circus (I don't think they had a single point from several years of competing in several classes) to regular winners in the following years (I think they got the manufacturers title the first year with the MZ clones in the 50cc class)

The next development was adding more cylinders (something Honda started pushing). They took the smaller engines and arranged them into a square four with water cooling in 1964 to make bikes like the RS64. Same rotary valve, porting and expansion chamber technology that came from MZ.

This is the 1967 version of the RS series:


The RG500 was the culmination of this development. Suzuki took the MZ technology and pushed it very hard over the next 15 years but it was still based on the stuff MZ had pioneered. The RZ is in a sense 4 MZ 125 engines wrapped in a water jacket

(NB I am not an expert - others may have better knowledge - most of mine comes from reading the book about Ernst Degner and Walter Kaaden I mentioned earlier (thanks to M.G.Vig) 'Stealing Speed')

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