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Thread: The Sensible Twin

  1. #136
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    Haven't you got a couple cam stubs hanging out the side of the head? Cut a slot and taper the back side of said slot. Then put a handle on any car starter you can get your hand on.

    Works for Yamaha MotoGP TEAMS.

  2. #137
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    Quote Originally Posted by Drew View Post
    Haven't you got a couple cam stubs hanging out the side of the head? Cut a slot and taper the back side of said slot. Then put a handle on any car starter you can get your hand on.

    Works for Yamaha MotoGP TEAMS.
    Starting something through the camshaft? A world of pain on anything with a chain driven cam.
    The tensioner side wasn't made for that kind of abuse.

  3. #138
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    Quote Originally Posted by sidecar bob View Post
    Starting something through the camshaft? A world of pain on anything with a chain driven cam.
    The tensioner side wasn't made for that kind of abuse.
    Even some gear ones have enough trouble with the valve gear remember the fibregear Holden 6's.

    It took 25 old years for Honda to design a reliable tensioner as it was.



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

  4. #139
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    Just put the standard starter gear in and do it off that then.

  5. #140
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    Quote Originally Posted by Drew View Post
    Just put the standard starter gear in and do it off that then.
    Oh dear, silly me, that's the end of the crank I cut off......

    Nah, drill will do it fine.

    Chains being used to drive in both directions - starter/alternator drive chain on the GPZ900/ZX10/ZZR1100 kawasakis.
    Started out about 12mm wide on the 900 - finished up about 20mm wide on the 1100. And the tensioner problems just got worse...
    If the 1100 spat back on startup, it could rip the tensioner mech out of the sidecover.

  6. #141
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    Grunty 3/8in drill on slow speed does it. 11.8 : 1 compression - you feel it when it's turning over.

    Mounted instrument pack incl sorting what functions I want in the wiring. Which led to the realisation that the early sump I've used has a level sender and I want pressure warning...So I made up a double decker fitting for the banjo bolt on the front of the cases. It's on the end of a gallery direct from the pump and of course feeds the head galleries. Normal sender unit screwed on the outside and we're indicating.
    As an aside, I found a nice piece of hex steel in the scrap box and used it for the extension - a Norton twin front cylinder head long nut. Never throw anything out....

    I'll probably make up a stand for the thing tomorrow. I have a dedicated stand for each bike built. Then take it outside and maybe get some pics.
    If we get some still days, there's a seat to paint too.

  7. #142
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    Quote Originally Posted by Grumph View Post
    Believe me, I'm going like fuck on it Scott. Working at getting the roller finished before the ignition arrives.
    Currently mounting a half fairing and the instruments. Tank is away being TIG'd - unlike you, I don't have TIG.

    It's the little bits that hold you up. Into town today for more tubing, fasteners and vinyl for the number boards...

    If the engine doesn't work out, at least I'll have a tidy roller which can take wider rims - and probably up to 100HP....
    not been here for a year after the germans took over
    i'm over buckets

  8. #143
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    Quote Originally Posted by mr bucketracer View Post
    not been here for a year after the germans took over
    Your absence was noted. Good to see you back.

  9. #144
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    Quote Originally Posted by mr bucketracer View Post
    not been here for a year after the germans took over



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

  10. #145
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    Where it's at right now. Still a lot to do. Probably the loom to make next.
    Tank I may get back next week then the fittings to make.

    Black wasn't my choice. Top fairing bought off trademe looked silver/gray in the pics...And the tinted screen, wasn't. However, it was cheapish.

    Anyone got a rough tank cover from the early version ?
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  11. #146
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    Quote Originally Posted by Grumph View Post
    Where it's at right now. Still a lot to do. Probably the loom to make next.
    Tank I may get back next week then the fittings to make.

    Black wasn't my choice. Top fairing bought off trademe looked silver/gray in the pics...And the tinted screen, wasn't. However, it was cheapish.

    Anyone got a rough tank cover from the early version ?
    That subframes a massive improvement, the old one looked like it was made of wrought iron. Looks Ducati, Still has pig iron lower yoke though.
    So its a 3ln front end 38mm with the 320mm 2kr brake.

    Pretty sure TZ had a big plastic bungs as per kart club rules



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

  12. #147
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    25th March 2004 - 17:22
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    I lost quite some Kilos from replacement ally tube on my YZF750SP subframe.
    Don't you look at my accountant.
    He's the only one I've got.

  13. #148
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    Quote Originally Posted by F5 Dave View Post
    I lost quite some Kilos from replacement ally tube on my YZF750SP subframe.
    I cheated - it's silver paint. Still lots lighter than stock though.

    Yes, Husa, it was covered in nylon when I got it. Racing on tracks shared with cars, common sense prevails and we don't need all the nylon. Now if only cars didn't drop oil....

  14. #149
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    Right, I've got a working ignition. But an odd one. The new 2KR ignitor ex China has all the right colour wires but one don't work...

    There's a blue wire which when power is switched on to the box is supposed to send power to the fuel pump relay. Turning the pump on.
    It doesn't..I can live with this as it does at least spark. Means rewiring the fuel pump to eliminate the relay.

    All the bells and whistles work - neutral and oil lights - even the temp gauge twitches.

    So there's still the tank and fittings to do.....Then the carbs......

    The ex NSR carbs are semi downdrafts. I've got to make the jet positions look like the pic in order to make them work in full downdraft mode.
    I have some ideas. Subject to change without notice, LOL.
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  15. #150
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    Quote Originally Posted by Grumph View Post
    Right, I've got a working ignition. But an odd one. The new 2KR ignitor ex China has all the right colour wires but one don't work...

    There's a blue wire which when power is switched on to the box is supposed to send power to the fuel pump relay. Turning the pump on.
    It doesn't..I can live with this as it does at least spark. Means rewiring the fuel pump to eliminate the relay.

    All the bells and whistles work - neutral and oil lights - even the temp gauge twitches.

    So there's still the tank and fittings to do.....Then the carbs......

    The ex NSR carbs are semi downdrafts. I've got to make the jet positions look like the pic in order to make them work in full downdraft mode.
    I have some ideas. Subject to change without notice, LOL.
    That blue wire isnt part of the sidestand set up?
    Blue on Honda is right indicator, i remember that from nearly thirty years ago.
    Looking at a couple of Yamaha looms it seems to be ignition and park light tacho related so it might a engine is on power feed.
    on the 400 loom it splices to blue and black and goes to the ignition switch looks like park and on.
    https://www.classiccycles.org/media/...d3ffffe417.pdf
    Looking further there is a lot of gubbins before it powers the relay for the fuel pump



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

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