There is no "P" in Simson!

Discussion in '2 smokers' started by spokester, Apr 10, 2016.

  1. spokester

    spokester Long timer

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    For Homer and Marge you must look elsewhere:lol3

    Got a sweet deal on a couple of East German two strokes that had lived their lives on the coast of the Baltic Sea. Thusly, they were a little bit rusty. The awesome dude we bought them from was kind enough to trailer them to our garage for us.:clap DSCN7106.JPG

    At our garage everyone gathered around to see what the excitement was! DSCN7109.JPG

    A 50cc Simson and a MZ TS 150! DSCN7108.JPG DSCN7111.JPG

    I love this kind of stuff, let the fun begin!:clap
    #1
  2. spokester

    spokester Long timer

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    A few impressive features become immediately apparent...

    The all purpose parking lamp is a genius design! DSCN7162.JPG

    Cast aluminum centerstands are one of my all time super-FAVS :) DSCN7165.JPG

    Fabulous locking side cover has my vote! DSCN7167.JPG
    What's not to love about this handy folding luggage rack/grab rail! DSCN7168.JPG

    Other amazing features include a fully enclosed drive chain and a rubber mounted motor...
    #2
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  3. spokester

    spokester Long timer

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    Seems as though something is missing from the ignition! DSCN7163.JPG

    The ignition switch is of the "wedding-cake" design featuring three distinct layers. Clever design utilizes three entirely separate electrical systems, one for each layer of the wedding cake.

    System 1 is an entirely self energizing electronic ignition system with a 6 volt spark coil.

    System 2 has a 6 volt battery, charging coil and rectifier. This only operates the parking lamp and the horn.

    System 3 provides A/C current for the rest of the lighting, headlamp, blinkers, etc. DSCN7170.JPG

    To the other side cover we find an infinitely reusable life time air filter and the very clever ignition module. The ignition module has a small adjustment screw on it, I wonder what for? DSCN7171.JPG

    Here's where it all begins, whopping rotor provides ALL kinds of current and a snappy blue spark at the plug. DSCN7173.JPG
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  4. spokester

    spokester Long timer

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    With a bit of work on the wiring, a compression test and a cleaned carb, we have a runner! I tried to photo the exhaust smoke, but the East German Addinol brand of 2T oil is SO clean burning you can barely see it. Similar attention also got the MZ 150 running. I got them both running in about four hours. A testimony to the simplicity of design! Obviously, however, both units will need a complete rebuild to be road worthy. I started on the Simson first. DSCN7319.JPG DSCN7172.JPG DSCN7177.JPG DSCN7190.JPG
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  5. spokester

    spokester Long timer

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    Obviously, I can't resist taking things apart :lol3 This giant puller and carpenter's clamp were among numerous useful items which were inherited with our garage when we bought it. These items, and the garage, date from "former times" an acronym for the DDR/GDR former East German republic. DSCN8036.JPG

    The puller jaws kept slipping off of the primary gear so I appropriated the carpenter's clamp to hold them on. Note the heavy MOLY grease on the puller threads, a huge tub of the stuff came with the garage :D DSCN8037.JPG

    The gear selector mechanism is an ultra clever design, but features a critical adjustment or two and is not to be tampered with lightly. DSCN8039.JPG

    Parts availability for East German two strokes is second to none AND quite affordable too. The local DDR motorcycle specialist set me up with the following:clap DSCN8043.JPG
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  6. spokester

    spokester Long timer

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    Here are some of the internal crankcase components. Transmission is of the genius "Christmas Tree" design. Owners of Hodakas will immediately recognize the plunger operated balls that engaged each gear, in turn, to the shaft. Therefore, there are no engagement "dogs" on the gears. A period British magazine review of the Simson called it the best shifting bike EVER! DSCN8051.JPG DSCN8053.JPG

    No small amount of effort went into cleaning up these parts. I have a propane torch which I made liberal use of during disassembly and assembly. Motor got new rings, wrist pin bearing, gaskets, seals, bearings and front sprocket. DSCN8054.JPG

    New bearings DSCN8055.JPG
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  7. spokester

    spokester Long timer

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    Progressed to this, this and this. Wire brush and spray paint to the exhaust system. DSCN8057.JPG DSCN8058.JPG

    Nice alloy rims polished up nicely, silver spray paint on the spokes and a pair of new Heidenau tires (front and rear wheels are entirely interchangeable). Some new fork boots, fork oil, wheel bearings and a regrease of the steering head. DSCN8068.JPG

    Stay tuned for the new rear shocks and the cute little "moped" license plate :clap
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  8. spokester

    spokester Long timer

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    After examining the situation, it became apparent that someone had welded some mounts onto the frame to fit a pair of some kind of old Italian shocks onto the bike. I sawed off those mounts, and, with a handful of hardware store bolts, put on a pair of brand new kick ass shocks. Shown next to the old shock for comparison. DSCN9432.JPG Note exceptional amount of rear wheel suspension travel!

    Thusly suspended I embarked on some explorations of old East Germany.
    Along the way we met an older Simson, every one of these is still running, you see them everywhere. DSCN9407.JPG

    On a bridge over the Autobahn, no, I didn't take the Simson onto the Autobahn!:rofl:rofl:rofl DSCN9409.JPG

    On the backroads I discovered an abandoned agricultural "Kollectiv" from former times. DSCN9412.JPG
    #8
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  9. spokester

    spokester Long timer

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    :rickyThese kind of "two track" roads are awesome to explore on the Simson! DSCN9416.JPG

    It lead down to a railroad bridge over the river where there was a party going on on a pedal-powered pontoon boat (party barge). DSCN9419.JPG

    Check out the cute little "moped" license plate. Although it's a real motorcycle with a clutch and a four speed transmission, it has been grandfathered in as a moped from DDR times. It will do an honest 60kph (38mph) which is an exception to the general moped regulations.
    Bike excels in town AND in cross country travel. It seems to almost make it's own gasoline at 2 liters per 100 km. That's 120mpg! DSCN9415.JPG

    Did 100km of riding, it was hugely successful and very, very satisfying. I even drove it into the city center to get a haircut! Bike just happened to have a new speedometer, so all of the kilometers are mine!:-) DSCN9434.JPG

    This ends, for now, my report on the Simson. I welcome your questions and comments. The MZ TS 150 (1979) is next!:ricky
    #9
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  10. egret

    egret noob

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    Bravo! Fantastic job, I absolutely love this little motorbikes, started my 2 wheels love affair with an 1956 MZ-125 back in '96. Small motorbikes rules ☺
    -zie egret.
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  11. BertieBassett

    BertieBassett RustRider

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    Great stuff! I love the Eastbloc stuff. Whereabouts are you?
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  12. spokester

    spokester Long timer

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    Ost-Bloc wise, I'm in Rostock Germany. See some cool stuff here too, not just motorcycles. Check out these cool old East German shortwave radios.
    All of the cities on the dial were in communist countries! Thanks, G DSCN9438.JPG
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  13. BertieBassett

    BertieBassett RustRider

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    I also like Trabbis, Wartburgs,Barkas vans, AWO Simson four strokes and all the other wonderful Ostbloc vehicles. I had a Ural solo too, that I bought new in 2005, but it was destroyed in a collision with a car a couple of years ago.. image.jpeg
    #13
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  14. spokester

    spokester Long timer

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    Wow! Cool! A guy I saw at an oldtimer event had some kick-ass Trabi hop up parts, ported cylinders and expansion chambers :)
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  15. jimroid

    jimroid Long timer

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    All of this is so perfect. Thanks for posting!
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  16. spokester

    spokester Long timer

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    SIMSON RIDER HAS INSANE SKILLZ!
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  17. spokester

    spokester Long timer

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    Getting ready for an exciting season of Simson riding. Charging up my cute Little 6V battery and bolting on my new Little Moped tag! 2003-12-31 23.00.00-8.jpg DSCN0420.JPG
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  18. spokester

    spokester Long timer

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    I added 200ml of 2 stroke oil to ten Liters of Benzin giving me 10.20 Liters of fuel. The Simson gas tank Held almost all of it. That's 500km (300 miles) worth of fuel!
    #18
  19. spokester

    spokester Long timer

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    Oh dear! A no start-no spark situation! Thankfully, the cute little Simson had the dignity to die at the garage and not out on the road. After some poking and prodding, I removed the ignition rotor and stator, poked and prodded, put it back on and got a few sparks, then none. This clever diagnostic lead me to believe the stator was at fault. It did have some bumps and bruises from the rotor from the old, worn main bearings and some rust on the iron cores of the windings and some generally iffy wiring. Luckily, a new one was very affordable BUT, very hard to select the right one. About a dozen different stators were offered and the part number on mine did not match any of the replacements sold. I took a bit of a gamble and luckily selected the correct one. The price was about a quarter of what you might pay for an equivalent Honda part. I was so excited to install it, I didn't get a picture of it new out of the box. The wire colors were all different, so I had to trace them all out to get the correct hook ups. On general principals, I also replaced the ignition module as it was only €14.00. It too has the adjusting screw. We now have a runner :)
    DSCN0725.JPG
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  20. Scootern29

    Scootern29 Long timer

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    Great thread spokester. I love seeing the bikes we didn't get here in the US.
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