CZ175 bike - everday commuter

Discussion in '2 smokers' started by hzoltaan, Apr 26, 2017.

  1. MATTY

    MATTY BORDER RAIDER

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    Photobucket is off the menu for me now, and i am struggling to post pictures here at the moment until i start another account and upload to that site, any ideas on another host site free let me know, but i not looked into it yet.
    Here is a link to a clean IZH Planeta Sport 350 shows the details
    can not tell what they are saying but you might know.
    #61
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  2. hzoltaan

    hzoltaan Been here awhile

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    finally started putting in the stator.
    I'm not fully happy with the parts included in the kit, but we shall see in action.

    The magnet wheel (whossitsname in English??) is fixed on by only an M6 bolt... nothing to position it... this is how you maintain good ignition timing? Pfff....

    Sorry for the picture quality, It was dark already.

    IMG_20170724_195816.jpg IMG_20170724_201503.jpg IMG_20170724_203821.jpg IMG_20170724_204827.jpg
    #62
  3. hzoltaan

    hzoltaan Been here awhile

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    It's alive!

    I keep missing my opportunity to to town and buy some electrical connectors, so the only thing I could wire together is the ignition.

    The bike started on the kick even with the magneto wheel only set to T-3mm by guessing the proper timing.
    ;)

    Quickly wired in the headlight and battery and got promptly blinded by the brutal force of 55W H4 bulb! :D Hahahha! that's gonna kill the tiny creatures hiding in the hedgerows!
    #63
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  4. hzoltaan

    hzoltaan Been here awhile

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    IMG_20170729_102617.jpg IMG_20170729_102632.jpg IMG_20170729_103153.jpg

    see the smoke?
    see it?
    :D
    #64
  5. hzoltaan

    hzoltaan Been here awhile

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    Finished!! Runs too! :clap 20170804163308.JPG 20170804163303.JPG 20170804163312.JPG

    The headlight is like the sun!...
    The Wiring I designed for 6V 45W, so a lot of amps, good earthing, thick wires... This 55/60W bulb definitely burned my retina! had to include an extra relay which would ground the ignition module. If I'm to ever modify this bike electrics-wise it shall have only a button somewhere hidden.
    But for now... Ride!
    #65
  6. spokester

    spokester Long timer

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    I love it!:clap
    #66
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  7. hzoltaan

    hzoltaan Been here awhile

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    And it rides! Tested today, revs quite well, feels quite smooth! So far good! :clap
    #67
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  8. YamaGeek

    YamaGeek Skeletor sparklemuffin.

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    P.S. late response...

    Old Honda CM200? I'm going to guess this is the Euro equivalent of a US market Honda TwinStar 185cc. They were single carbed also.

    I'm not sure if they have the same rubber boot to carb issues that most of the vertical cylindered Honda singles from that era suffered from. I would check the intake boot just for instances. If you can get it running again, see if it will hold an idle and then if you have a small handheld propane torch, open the torch's valve and run the propane gas close to the boot to see if it runs better, change sides of the boot to see if it improved incrementally, which might get you an idea which cylinder is running lean.

    Before doing any of this make sure your ignition timing and valve clearances are all in order.

    BTW Good show on getting it running with the 12 volt kit. My old Ducati could have used a similar ignition and lighting system, it was no better than a Peugeot Moped for lighting. 35 watts total at 6 volts. How did anyone ride these in Italy at night?
    #68
  9. hzoltaan

    hzoltaan Been here awhile

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    Already tried that. It's a cast T pipe connecting the 2 cylinders and the carb .There is no rubber boot, only a plastic isolator plate and gaskets. But I gave it a good whuss with brake cleaner. Nothing has changed. You know I think something is amiss with the ignition... I used to own (or rather the devil owned it) a Z650 on which I have spent countless hours self-educating myself about the viciousness of old coils mated with old carbs. :baldy

    The 12V kit got me sweating under a tree a mere 20km later! Hahahha!
    The flywheel loosened up and ignition timing went south. Managed to set it on site, while actually discovering the inadequacy of my toolkit.

    Ignition timing with those bikes is not exactly a number chiseled in stone. The first day I ran 3mm BTDC, now I assume I do 2.7mm. Bike has a lot more lower torque but I doubt It revs all the way. Will see on the ride home. (at work now. ) The book says 2.8mm, on Jawa 638 (very similar stuff) it's 3mm... We'll see 3.2? 3.3? First, second... :bite

    Fabricated a custom spark plug key which doubles as the flywheel puller / fastener. This way I can grab the flywheel and while tormented by the horrors of feeling the thread strip, I can fasten the 6mm bolt holding down the flywheel.

    I assume a high strength 6mm allen key with a spring plate should do it, right? Right? :D


    And 1 thing:
    My whole crank is moving in-out! :hmmmmm
    When running I actually saw the fascinating sight of a golden flywheel pop in and out merrily, specially around a certain rev, like 3000...?

    The play is like 1-2 mm, I'm not liking it at all!!
    :eek2
    #69
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  10. hzoltaan

    hzoltaan Been here awhile

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    You see, there is nothing to report!
    It rides and starts and goes and rides! :D
    Not doing big trips, only commuting, but the bike could do it. Absolutely
    #70
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  11. shangovi

    shangovi Adventurer

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    Ohhh... that brings back memories. I am originally from India but now in the States last 30 odd years. I rode a Yezdi 250 which was how India marketed the Jawa 250 or something. Exactly the same internally only more angled on the outside. Wish I could get my hands on one now, Incidentally these bikes are all the rage now in India and particularly in the city of Bangaluru where they were manufactured in India
    #71
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  12. guzzirelic

    guzzirelic Been here awhile

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    Perfect! What more can you ask for?
    I'd love to find a Jawa of this vintage or older. But they are rare in Canada and thus very expensive in any sort of decent condition. I'm enjoying reading about your experiences. Please keep us posted.
    Ken
    #72
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  13. hzoltaan

    hzoltaan Been here awhile

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    Here I go... and it was working so admirably!

    Today while coming to work, after a hard acceleration (you always accelerate hard with 10 elderly horses) I managed to rev it's brains out when I shifted into neutral between 3rd and 4th.

    The bike then lost power... there was idle, but hardly anything else. As soon as you open the throttle it just goes: Hrrrrrrrrrrrrmmmpfffffffff. But it will idle happily away.
    Electrics seems good. Changed spark plug but to no avail, checked wiring: all good. Idle stable.

    Seemed to be a bit better when closed off the air intake.
    But then I noticed that it was overflowing... (did it suck harder on the juice perhaps? I have old style carb, the float house has a little hole to let stuff out)
    Thought that my float got somehow dislodged (never happened over 30000kms on such carbs) but who know... on such bikes.
    And voila, it was working fine once I re-seated the float.
    Then it spent about 1 minute idling while I was putting away the tools and put the backpack on, then again, small throttle: hrrrrmmmmmm.

    Closed the tap off, to compansate for overflowing: not better.... not better... fuel starving, engine quit.
    So it's not overflow of fuel.
    Not electrics.
    Then what?

    Could it be that I have broken th dynamo side crankshaft gasket?
    Tomorrow I will take the van to work and pick the bike up then I can give it a squirt of brke cleaner to see if it sucks air somewhere...
    #73
  14. hzoltaan

    hzoltaan Been here awhile

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    Sorry Guzzirelic for the late answer!
    Rare in Canada? If you figure out how to register one, I'm sure transport can be arranged. :) The local craigslist is still full of 1980-ies CZs, Jawa, but indeed, prices are creeping up. The older stuff (the 6 days winners or the California models are all gone. Those prices are nasty. But for a small CZ like this you would for over something like 3-500 eur for a legal bike. (I mean valid paperwork)

    There was not much to report, as I'm not that tough to ride in the winter. You from Canada probably understand this. ;)
    #74
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  15. Scootern29

    Scootern29 Long timer

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    Take the Jikov apart and see if something has come loose inside. Could be the needle clip.
    #75
  16. rightsideup

    rightsideup Get your motor running...

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    My Dad had exactly the same bike in the mid 70s, it was the first bike I ever rode when I was about 14. In the UK they only had the logo on the tank.

    [​IMG]
    #76
  17. rightsideup

    rightsideup Get your motor running...

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    #77
  18. BertieBassett

    BertieBassett RustRider

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    Thats 'cos I took the pic in Estonia mate....:-)
    #78
  19. hzoltaan

    hzoltaan Been here awhile

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    Sorry for the late reply, but yeah, spot on! The needle clip.

    Hahahha! Memorable!
    Took me about 30min to walk to work.
    Took me about 1.5 hours to struggle home after late shift including a 30min walk from the station.
    Took about 20 min to fit the not too big bike into a very small van I have. (Carry 0.8L :D )
    Took 20 min to get the bike out of the van.
    Took about 2.5 minutes to fix it. x)

    Could have, should have fixed by the road.

    Still then, bike runs like clockwork. Amazing really. Just needs little oil ever now and then, and a bit of chain tensioning.
    Doing 50k a day to and from work every now and then battling rather crazy traffic.
    Lovely
    #79
  20. hzoltaan

    hzoltaan Been here awhile

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    The crazy thing is, that we did not have thoose in the 70ies! :D :D They were built here but all went to export, to get some hard needed dollars on which the socialist industry could by rare stuff, and technology!

    The first "modern" 175s came out around '82. At least I have never seen older. The ones with the clock in the headlight. Heard that the engines were better engineered too.

    In the 80ies we had a lot of Jawas, CZs, this particular one left the factory in '89 with 6V electrics, all metal parts and rather outdated technology.
    #80
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