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| smegballs |
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 smegballs World Chat Champion
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 G The Voice of Reason
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| iCraig |
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 iCraig World Chat Champion
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 G The Voice of Reason
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| iCraig |
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 iCraig World Chat Champion
Joined: 04 Jun 2004 Karma :     
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 Posted: 21:45 - 29 Dec 2007 Post subject: |
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G, they're light and very flickable. I owned an ETZ251 and that handles amazingly, and I have ridden countless TS250's and Supa 5's and there just as good.
And whoops meant to say 20bhp is what they're quoted as having.
FYI I was a member of the MZ Riders Club for a few years.  |
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| phil2alp |
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 phil2alp Nitrous Nuisance
Joined: 22 Oct 2006 Karma :     
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 Posted: 21:54 - 29 Dec 2007 Post subject: |
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When I was on a tour in Austria a few years ago I met a couple in Innsbruck who were riding around Europe on an MZ. She rode pillion with a cantilever toolbox on her lap because it broke down fairly regularly. They said they didn't mind though as it was so easy to fix.
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| iCraig |
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 iCraig World Chat Champion
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 G The Voice of Reason
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| iCraig |
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 iCraig World Chat Champion
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 G The Voice of Reason
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| gerkin |
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 gerkin Two Stroke Sniffer
Joined: 29 May 2006 Karma :    
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 Posted: 18:24 - 02 Jan 2008 Post subject: |
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drum brakes on a mz are death traps ,,go for a etz250 front end swap with disc brake,,,yep electrics are weak point the red charging light comes on until you find the corroded connection ,,great work horses cheap to run and rebuild crank seals a weak point
cheap spares here !
https://www.mz-b.de/mz/emz.htm |
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| flyer |
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 flyer Trackday Trickster

Joined: 30 Aug 2006 Karma :     
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| stinkwheel |
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 stinkwheel Bovine Proctologist

Joined: 12 Jul 2004 Karma :    
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 Posted: 21:04 - 02 Jan 2008 Post subject: |
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They're great. Frankly, who wouldn't want a bike with an exhaust that long?
It's all well and good comparing them to an NS125. Then you encounter a headwind or a hill and you suddenly realise why attaching a sidecar to an MZ, piling it full of stuff and plonking a passenger on the pillion seat has little discernable effect on its top speed.
MZs have torque coming out of their ears (comparatively). ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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| smegballs |
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 smegballs World Chat Champion
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| smegballs |
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 smegballs World Chat Champion
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| smegballs |
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 smegballs World Chat Champion
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| gerkin |
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 gerkin Two Stroke Sniffer
Joined: 29 May 2006 Karma :    
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| Noxious89123 |
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 Noxious89123 World Chat Champion

Joined: 10 Jun 2007 Karma :    
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| Zen Dog |
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 Zen Dog World Chat Champion

Joined: 11 Aug 2004 Karma :    
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 Posted: 14:21 - 07 Jan 2008 Post subject: |
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Dont do it! I thought the MZ was great until i actually had to mess with the engine internals, which were clearly designed by a sadist who'd only heard of motorcycles third hand...
If you want a simple rubbish bike, get a CB250 superdream or something, all the lack of performance, without the tears of frustration and the frankly weird riding position.
Zen Dog ____________________ Current - '94 VFR750FR (Dead), '00 VFR800FI, 2011 CBF125 Previous - '10 Street Triple R, '92 MZ ETZ301, '05 TTR250, NSR125R, KMX125, "Honda" Win (chinese copy of an old Honda design with a C90 engine)
My bike trip around S.E. Asia 2010/2011 |
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| stinkwheel |
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 stinkwheel Bovine Proctologist

Joined: 12 Jul 2004 Karma :    
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| Zen Dog |
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 Zen Dog World Chat Champion

Joined: 11 Aug 2004 Karma :    
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 Posted: 16:08 - 07 Jan 2008 Post subject: |
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Double Post. ____________________ Current - '94 VFR750FR (Dead), '00 VFR800FI, 2011 CBF125 Previous - '10 Street Triple R, '92 MZ ETZ301, '05 TTR250, NSR125R, KMX125, "Honda" Win (chinese copy of an old Honda design with a C90 engine)
My bike trip around S.E. Asia 2010/2011
Last edited by Zen Dog on 16:14 - 07 Jan 2008; edited 1 time in total |
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| Zen Dog |
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 Zen Dog World Chat Champion

Joined: 11 Aug 2004 Karma :    
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 Posted: 16:09 - 07 Jan 2008 Post subject: |
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| stinkwheel wrote: | No, it's the Japanese who have it backwards. MZ made them first. In point of fact, the MZ chief designer also designed the first sucessful Japanese 2-strokes after defecting durng a race
The engine internals are fantistic, the design is very good and robust. Keyed shafts and big, meaty ball/roller bearings all over the place.
Was it removing the MASSIVE crank-mounted clutch basket that caught you out? They're a bit of a bugger to shift eh? You just need a good enough puller. The extra weight acts as a flywheel and is one of the reasons for them being so torquey. |
Yeah, i know they came up with them first (expansion chamber etc.), but you'd think they'd have made some improvements since 1960-odd...
The crank mounted clutch basket is the least of it, at least i'd been warned about that. The transfer ports system is so inefficient, they clearly thought that wheezily blowing the gases vaguely in the right direction would be good enough, the gear change mechanism is abysmal and only works with a vicious stamp, the crankcase halves refused to come apart without hammering (despite the claims of the haynes manual), i cant find neutral (or the neutral light) now for love nor money with the engine running (even though i didnt touch that), and the clutch adjustment in the engine is a knife edge between failing to grip when you kick it over or killing the engine when you slip it into first even with the clutch fully in...
There is way too much wasted space in the engine too, it just seems like they drew a shape in 1960 that they could fit everything into and never bothered to change it.
I do like the torqueyness of the engine, but i'm already planning to use the bike as a test mule for a fully electric motor/battery setup because i hate the engine so much. The chassis though, to be fair, is lovely.
Zen Dog ____________________ Current - '94 VFR750FR (Dead), '00 VFR800FI, 2011 CBF125 Previous - '10 Street Triple R, '92 MZ ETZ301, '05 TTR250, NSR125R, KMX125, "Honda" Win (chinese copy of an old Honda design with a C90 engine)
My bike trip around S.E. Asia 2010/2011 |
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| stinkwheel |
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 stinkwheel Bovine Proctologist

Joined: 12 Jul 2004 Karma :    
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 Posted: 17:43 - 07 Jan 2008 Post subject: |
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Ahh. You're falling into the classic trap of expecting too much from a really cheap motorbike.
You are entirely correct, the engine has changed very little from the late 1960's, the gearbox is totally normal for that era.
Oh, and your clutch plates are warped, that's why you can't set it properly and can't find neutral.
I think the port timing is pretty efficient, and that's ultimately what they are about. They were primarily designed to get East German factory workers from home to their place of work in as cheap and fuel efficient a manner as possible. It is comparatively easy to mess with the port timing, the majority of tuning is carried out using a hand file.
The crankcase halves were never designed to pull apart easily. That's just Mr Haynes making stuff up again. In the absence of a factory puller (never seen one) you have to put them in the oven until they are burning hot, then they'll fall apart. ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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| iCraig |
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 iCraig World Chat Champion
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| Zen Dog |
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 Zen Dog World Chat Champion

Joined: 11 Aug 2004 Karma :    
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 Posted: 22:34 - 07 Jan 2008 Post subject: |
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| stinkwheel wrote: | Ahh. You're falling into the classic trap of expecting too much from a really cheap motorbike.
You are entirely correct, the engine has changed very little from the late 1960's, the gearbox is totally normal for that era.
Oh, and your clutch plates are warped, that's why you can't set it properly and can't find neutral.
I think the port timing is pretty efficient, and that's ultimately what they are about. They were primarily designed to get East German factory workers from home to their place of work in as cheap and fuel efficient a manner as possible. It is comparatively easy to mess with the port timing, the majority of tuning is carried out using a hand file.
The crankcase halves were never designed to pull apart easily. That's just Mr Haynes making stuff up again. In the absence of a factory puller (never seen one) you have to put them in the oven until they are burning hot, then they'll fall apart. |
Worth knowing about the clutch plates, though i'm not taking that bastard apart again, it can sit in my garage looking shiny till i electrify it.
And they really arent great on fuel, although it will run on gravy more or less. Twice the fuel economy on a superdream or CG. Whats the fuel economy like on a H100? At least its 2t.
Mr Haynes lies, a lot. Though i was gratified to note that the photos of the wiring in the Haynes manual looks just like mine (i.e. done by a 12 year old with ADHD).
| Craig- wrote: | And your year of ETZ301 is only just an MuZ, built after privatisation, so they still had a lack of money till the mid 90s!! |
A fact of which i'm all too aware. The new 125's are lovely little bikes, and excellent quality.
Zen Dog ____________________ Current - '94 VFR750FR (Dead), '00 VFR800FI, 2011 CBF125 Previous - '10 Street Triple R, '92 MZ ETZ301, '05 TTR250, NSR125R, KMX125, "Honda" Win (chinese copy of an old Honda design with a C90 engine)
My bike trip around S.E. Asia 2010/2011 |
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Old Thread Alert!
The last post was made 17 years, 359 days ago. Instead of replying here, would creating a new thread be more useful? |
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