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Thread: Ignition Timing

  1. #16
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    Quote Originally Posted by Grumph View Post
    My most vivid memory of Neil and Betty is Greymouth in the wet. And Neil disappearing towards Westport sliding on his arse at high speed.
    Must of been the time I thought I was invincible because I had wets fitted. I rudely found out although they are good in the wet they are not perfect.
    Compare Pornography now to 50 years ago.
    Then extrapolate 50 years into the future.
    . . . That shit's Nasty.

  2. #17
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    Um, no, not taking the piss. You'd know as it would be witty to the point of caustic. Maybe.
    It was over a decade ago. Urgh. The new 50 was 2004 so maybe 2 decades ago?

    Funny how the brain works. I saw the CBX in the same Red/White colour as my old one. Greg mentioned Betty and heck. It was the CBX that was Black not the GS.

    That's why eye witness testimonials are so fallible. The brain takes shortcuts.

    D.
    Don't you look at my accountant.
    He's the only one I've got.

  3. #18
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    Quote Originally Posted by F5 Dave View Post
    Um, no, not taking the piss. You'd know as it would be witty to the point of caustic. Maybe.
    It was over a decade ago. Urgh. The new 50 was 2004 so maybe 2 decades ago?

    Funny how the brain works. I saw the CBX in the same Red/White colour as my old one. Greg mentioned Betty and heck. It was the CBX that was Black not the GS.

    That's why eye witness testimonials are so fallible. The brain takes shortcuts.

    D.
    If i think of GS's now I always visualize the white and blue S models.
    I saw a post when this thread was started as I was interested as another mate had a red/white(CBX 550) one .Someone said the Haynes manual was not very good

  4. #19
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    20th January 2010 - 14:41
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    If I was going to build a 60s look GP replica Honda multi the engine I would use would be a CBX400F or 550.
    reasonably narrow for AC 4 with the alternator tucked up the back.
    Click image for larger version. 

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    Seen this while looking for an Engine pic


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    Were these the same engine family?
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    looking at the pics its looks like the VTech one?



    Kinky is using a feather. Perverted is using the whole chicken

  5. #20
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    No the alternator is on the end of the crank. Although it is missing in that second picture. What you can see in the first picture is the drive for the starter motor. Until I studied that last picture, I would of said nothing to do with a CBX and CBR but that does look like CBX400 engine in a newer style frame. So I do not know.
    Compare Pornography now to 50 years ago.
    Then extrapolate 50 years into the future.
    . . . That shit's Nasty.

  6. #21
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    That does look like the Vtech version.

    As Neil will confirm, that engine family isn't the greatest point to start developing a race motor.
    The Morse chain primary drive is the main weak point. It doesn't like revs or HP.

    I was under the impression for some time that NZ had run out of sound CBX550 engine cases due to
    the number destroyed developing Betty. Apparently more were sold here than I thought.

    I'm told that Paul Pav back in the day made a good attempt at reducing stocks when racing his one too.

  7. #22
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    Quote Originally Posted by Grumph View Post
    I was under the impression for some time that NZ had run out of sound CBX550 engine cases due to
    the number destroyed developing Betty. Apparently more were sold here than I thought.
    I only remember one being destroyed when the primary chain letting go tried to saw the engine in half

    It's more of a problem getting the correct bearings for the crank he has
    "If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."


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  8. #23
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    Quote Originally Posted by Grumph View Post
    The Morse chain primary drive is the main weak point. It doesn't like revs or HP.
    I now believe the Morse* chain breaking was a symptom not the cause of the crankcase being Chain-sawed almost in half. At the start of being off injured, a couple of years ago, I found one of the clutch basket`s involved, cleaned it and carefully studied it under a Magnifying Glass, the steel plate riveted to the back of the clutch holding the primary Drive sprocket to the basket, has rectangle cut outs in it for the crush drive springs and there were cracks starting from the corners nearest the outside edge. On one of the cut outs both cracks had reach the edge of the steel plate and the resulting piece of steel had no where to go but between the sprocket and the chain.

    *It is really a Morse chain made in England. I worked this out after finding out what the symbol was stamped into the side of the chain. I must admit it made me laugh to think the chain was made in England, shipped to Japan put in a CBX and in some cases ( CBX550s were sold in England ) shipped back to England!
    Compare Pornography now to 50 years ago.
    Then extrapolate 50 years into the future.
    . . . That shit's Nasty.

  9. #24
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    Quote Originally Posted by Kickaha View Post
    I only remember one being destroyed when the primary chain letting go tried to saw the engine in half

    It's more of a problem getting the correct bearings for the crank he has
    It was two set`s of cases in the end. I have not been able to get new crankshaft bearings to rebuild the original engine in another set of cases. I have got another motor, witch I am going put all the good parts on to it ( including a uprated clutch basket )
    Compare Pornography now to 50 years ago.
    Then extrapolate 50 years into the future.
    . . . That shit's Nasty.

  10. #25
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    18th March 2004 - 17:38
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    Ignitech so cool

    I have talked to the NZ rep of Ignitech. He assured me that they can do a customizable set up for a four cylinder fowl stroke ... I mean four stroke. So I will go with the stock ign numbers and see where to go from there.
    Compare Pornography now to 50 years ago.
    Then extrapolate 50 years into the future.
    . . . That shit's Nasty.

  11. #26
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    Quote Originally Posted by diesel pig View Post
    I have talked to the NZ rep of Ignitech. He assured me that they can do a customizable set up for a four cylinder fowl stroke ... I mean four stroke. So I will go with the stock ign numbers and see where to go from there.
    https://www.ignitech.cz/en/vyrobky/tcip/tcip.htm


    SPARKER TCIP4 is so-called inductive ignition (battery, transistor, TCI) with revolution and TPS regulation of the advance. This type of ignition is used for most multi-cylinder road motorbikes. SPARKER TCIP4 ignition is prepared for many individual bike types. It can be assembled to practically any carburettor motorbike with stable dashboard voltage 12 V. CBR, CB, VF, GSX, VS, XTZ, TDM, FJ, XJ, LTD, ZX, EN ... motorbikes can be mentioned as an example. If the sensor system of customer`s bike does not comply with SPARKER TCIP4 ignition, it can be adjust by means of special settings.SPARKER TCIP4 ignition is equipped with two inputs for pickup, input for throttle position sensor or inlet air pressure sensor, two multifunctional switch inputs (for blocking, kill switch, retard...), output for tachometer, two multifunction switch outputs (for fuel pump relay, gear shift light ...), outputs for servomotor.
    SPARKER TCIP4 is produced with several modifications according pickup system and according used coils.
    Ignition is fully programmable by software. Software included advance map or curve, options for blocking, revolution limiter, servo ...
    A lot if Racing older efi Ducatis in NZ use an ignitec they also do an ignijet... for fuel injecion....

    https://www.ignitech.cz/en/vyrobky/ignijet/ignijet.htm



    Kinky is using a feather. Perverted is using the whole chicken

  12. #27
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    Looks like someone else figured out that they would make a good replica basis

    https://www.classicracer.com/honda-rc181-replica/



    Kinky is using a feather. Perverted is using the whole chicken

  13. #28
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    Quote Originally Posted by husaberg View Post
    Looks like someone else figured out that they would make a good replica basis

    https://www.classicracer.com/honda-rc181-replica/
    The only thing I picked the author getting wrong was the CBX400/550 had a Morse Hi - Vi chain driving the cams not a shaft. Maybe the broke who made this bike was trying to tell the author he had changed it to a roller chain?
    Compare Pornography now to 50 years ago.
    Then extrapolate 50 years into the future.
    . . . That shit's Nasty.

  14. #29
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    Quote Originally Posted by diesel pig View Post
    The only thing I picked the author getting wrong was the CBX400/550 had a Morse Hi - Vi chain driving the cams not a shaft. Maybe the broke who made this bike was trying to tell the author he had changed it to a roller chain?
    I think he was referring to the final drive
    no idea re the 550s in Europe never seen one with traditional discs like the one in the pic in the article
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    I never read it but seen what it was based on...
    but looking here at least one of the 400 versions was shaft final drive
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    according to the blurb it looks like there was a shaft 550 but then again it says the alt is behind the cylinders?
    I assume the CBX650 is a smaller CBX750 which was likely a 700 for the US at the time. (Save Harley import RULE)

    it looks like the valve gear is different according to the blurb? not just shaft.

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    Any parts look the same to you? on the 83 550 USA parts fiche?

    https://www.hondapartshouse.com/oemp...ghwk-550-parts

    the center code is different than the CBX550 euro
    https://www.cmsnl.com/honda-cbx550f-...t_11000ma6000/

    similar but different....



    Kinky is using a feather. Perverted is using the whole chicken

  15. #30
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    I think the mag has just used the wrong picture. That's I am pretty sure is a pic of a twin cam CB750/900 of roughly the sane time period 1978/82 and all the other pics in your post are of later different versions of the same.
    Compare Pornography now to 50 years ago.
    Then extrapolate 50 years into the future.
    . . . That shit's Nasty.

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