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Tell Me About... (East German Strokers)

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KLR600
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PostPosted: 03:53 - 20 Dec 2014    Post subject: Tell Me About... (East German Strokers) Reply with quote

No, not the lady strokers strolling the streets at night - I'm talking MZ!

It looks like it's going to take me a bit longer than I originally planned to get my ZRX on the road in Germany. I need to overhaul the carburettors, rear brake and forks before even contemplating Herr TÜV and his big book of NEIN!

I have 10 years NCD from various insurance policies in the UK which is admissible with German insurers. My last policy ran out in the UK early this year and I don't want to push my luck with my proof of NCD letter being too old for Zee Germans and their love of bureaucracy. I have decided that it would be a good idea for me to get a cheap run around/hack to insure and use while I fix up and officially import the ZRX so I don't lose my 10 years of no claims.

Having had a look around it would seem that I can get various models of low capacity MZ 2 strokes with a TÜV (German MOT equivalent) for around €500. Here's an example of an MZ TS 150 with almost 2 years of TÜV remaining and under 5k kilometres on the clock for less than €600! It looks like I have a choice of the following models:

MZ TS 150
MZ TS 250
MZ ES 150 (I don't like the headlight on these)
MZ ES 250 (I don't like the headlight on these either)
MZ ETZ 150
MZ ETZ 250

I don't really know anything about these bikes other than they are very basic, points based ignition, lowly tuned 2 strokes. I've done some Googling and read the MZ Wikipedia page but I'm not getting too much back on reliability and whether I will die a few days after picking up an MZ having been used to Japanese bikes for the last 10 years.

Can anyone fill me in?

The bike will be used for pottering around Berlin and basically for keeping my no claims usable. I'm not expecting any performance whatsoever but I would like it to stop in some kind of sensible distance and go round corners without ending up in too many hedges. I don't want it to turn me into a classic bike mechanic either so I'm after something robust and reliable too. I have a friend who has an MZ TS 250 and he likes it but he's into classic bikes anyway. He had a go on my ZRX before I took it off the road and he spent the rest of the day shaking his head wondering why you would need so much power on the road Laughing His English isn't brilliant either so I can't really grill him on the finer points of his bike.

I'm thinking these bikes are like the German version of an RXS100? If so then that would be great. I'd probably sell it when my ZRX is on the road so it wouldn't be a long term keeper assuming the ZRX goes to plan.

A couple of things to note. Before someone says that I may enjoy riding a smaller capacity bike after riding big bikes for a while I can already say that I'm not one of those people. I've ridden various small capacity bikes in Morocco and Asia and while they were fun for 10 minutes I got pretty bored pretty quickly. I'm not trying to re-discover biking because I already love it! The other thing is that I would be all over Simson S51's but they start at about €800 for a pile of parts so that's out as a cheap hack. There are a few older Japanese bikes around like the Yamaha XJ (pre diversion), Kawasaki GPZ5/600 and Suzuki GSXF650's but they have moon mileage and they don't strike me as being a simple proposition as an old East German bike. I kind of like the idea of teaching my East German wife to ride on an East German bike too Thinking Embarassed
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Iain.
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PostPosted: 11:39 - 20 Dec 2014    Post subject: Re: Tell Me About... (East German Strokers) Reply with quote

KLR600 wrote:
I'm not expecting any performance whatsoever but I would like it to stop in some kind of sensible distance and go round corners without ending up in too many hedges.


https://bmzrc.net/
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Val
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PostPosted: 13:35 - 20 Dec 2014    Post subject: Re: Tell Me About... (East German Strokers) Reply with quote

KLR600 wrote:
It looks like I have a choice of the following models:

MZ TS 150
MZ TS 250
MZ ES 150 (I don't like the headlight on these)
MZ ES 250 (I don't like the headlight on these either)
MZ ETZ 150
MZ ETZ 250

I don't really know anything about these bikes other than they are very basic, points based ignition, lowly tuned 2 strokes.

but I'm not getting too much back on reliability and whether I will die a few days after picking up an MZ having been used to Japanese bikes for the last 10 years.

Can anyone fill me in?


Get MZ ETZ 250, from the ones you have listed this one is the best. That was my first proper bike after 50cc. Reliability wise is built like a tank. I wish I never sold it. Probably I will buy one sometime again Laughing

Of course this will be second hand bike, so it is important to check the engine, clutch, gears, wheel bearrings, suspensions. Two strokes engines wear faster than 4 strokes you want to be sure you are buying something that does not need rebuilt.

Do not forget to put 1:50 two stroke oil in the petrol tank. When you buy it change the gear oil with a good quality one.

Two strokes and particularry this one needs good warm up, do not ride it fast on cold engine. Do not ride it on low RPMs, it is designed to have high RPMs, low RPM can damage it. Like most two-stroke engine MZ ETZ 250 is sensitive to ride too low rpm - which makes punching crankshaft bearings and overheating ("sawing" in place, "burning rubber" and so on). Doing so in extreme cases can lead to blurring of the piston and the cylinder strokes damage.

Everything you need to know is in the manual:

https://www.moonshiners.org.uk/MZ/MZmanual.pdf
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temeluchus
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PostPosted: 14:43 - 20 Dec 2014    Post subject: Reply with quote

I've owned a TS250 supa5 and a ETZ301.

The problem nowadays is that most MZs are high mileage and rather old so will almost invariably need quite a bit of attention.

Premix models run 44-1 premix, ones with pumps 50-1. Electronic ignition and junking the BVF carb for a new Bing will remove most of the problems you are likely to face. You can find a bing on tut web and Bing will still happily sell you one.

There are plenty of places for bits, including:
https://www.ost2rad.com/
https://www.themzshop.co.uk/category/100/
https://www.mz-b.info/mz/emz.htm

KLR600 wrote:
I'm thinking these bikes are like the German version of an RXS100?


No, the japanese stole everything they know about two strokes FROM MZ.

The MZ 250s are more equivalent to a CB250, GN250 etc etc. Younger and more ignorant morons hear two stroke and think sports bike.
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Polarbear
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PostPosted: 14:53 - 20 Dec 2014    Post subject: Reply with quote

Don't get a Voskhod 175 2 stroke really, unless you want it as a table ornament. They were built with oval drum brakes.

CZ's are fun! Especially with the combined gear change/kickstart Shocked

MZ's are probably your best bet

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WD Forte
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PostPosted: 15:07 - 20 Dec 2014    Post subject: Reply with quote

My lad had an ETZ125 for a while and I thought it was great fun for whizzing about the town on.
I thought it handled much better than a similar year CG

Mind you, I took it for MOT and it siezed up on the way back !
We found the oil pump was faulty.
I put an earlier pre mix engine in ( ETS i think) but the boy was always getting the ratios confused, over oiled it, got pissed off and flogged it.

had a CZ125 as well for a time but never liked it much
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KLR600
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PostPosted: 18:21 - 20 Dec 2014    Post subject: Re: Tell Me About... (East German Strokers) Reply with quote

Iain. wrote:
https://bmzrc.net/


I thought there was some kind of race series but wasn't sure. I do remember a few threads where Gazdaman took an MZ 250 on a few trackdays.

Despite some of the hideous streetfighter contraptions that come out of Germany it seems that modding a bike here is a royal pain in the bum. I'll be leaving whatever I get standard and saving all the hassle of dealing with the TÜV lot with my non standard ZRX.

Val wrote:
Two strokes and particularry this one needs good warm up, do not ride it fast on cold engine. Do not ride it on low RPMs, it is designed to have high RPMs, low RPM can damage it. Like most two-stroke engine MZ ETZ 250 is sensitive to ride too low rpm - which makes punching crankshaft bearings and overheating ("sawing" in place, "burning rubber" and so on). Doing so in extreme cases can lead to blurring of the piston and the cylinder strokes damage.

Everything you need to know is in the manual:

https://www.moonshiners.org.uk/MZ/MZmanual.pdf


Ride it like I stole it then Laughing

I've had 2 strokes before so I should be fine with all the mixing of various fluids Thumbs Up The manual looks helpful though, thanks.

Temeluchus wrote:
The problem nowadays is that most MZs are high mileage and rather old so will almost invariably need quite a bit of attention.


There are over 50 of these bikes listed for sale within 50km of me for around €500, more if I up the budget, so I'm guessing if I got one that turned out to be a lemon I could just buy another one and make a good one from two lemons.

My plan is pretty academic at the moment as I may end up just plumping for some 80's Japanese bike. I'm just conducting research at the moment so I know what's good and what's not when I come to buy probably in the new year Thumbs Up
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temeluchus
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PostPosted: 19:55 - 20 Dec 2014    Post subject: Re: Tell Me About... (East German Strokers) Reply with quote

KLR600 wrote:

There are over 50 of these bikes listed for sale within 50km of me for around €500, more if I up the budget, so I'm guessing if I got one that turned out to be a lemon I could just buy another one and make a good one from two lemons.


I think from the supa5 on all the engines swap anyhow.
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1198
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PostPosted: 20:14 - 20 Dec 2014    Post subject: Reply with quote

I like the MZ / Simson range myself, mainly though rose tinted glasses. I'd say if you got one and didn't abuse it too much you could run it and not lose money at resale time, they seem almost collectable now in the same way early Skodas and Ladas seem to be.
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KLR600
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PostPosted: 20:41 - 20 Dec 2014    Post subject: Reply with quote

1198 wrote:
I like the MZ / Simson range myself, mainly though rose tinted glasses. I'd say if you got one and didn't abuse it too much you could run it and not lose money at resale time, they seem almost collectable now in the same way early Skodas and Ladas seem to be.


If they end up going the same way as Simsons have over here then there'll be no cheap bikes left. You can pay as much as €4/5k for a newly restored Simson S51 here!!
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RhynoCZ
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PostPosted: 22:19 - 20 Dec 2014    Post subject: Reply with quote

MZ 150 ETZ, nice little thing, the clutch is the only flaw. Thumbs Up

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