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peteypops

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Posts posted by peteypops

  1. Nope - RAF Police wear white-topped peaked caps, hence the nickname.

    IGDT Flight (Initial Ground Defence Training) is staffed by the Rockapes - RAF Regiment.

    Everyone else who's not a Rockape is a Penguin.

    And all penguins have got brains!!!

    Best of luck young man, I did 10 years in the RAF (79-89) as a Sooty, loved it. Riggers and Sootys tend to be big buddies on the Line, Sparkys got too many brain cells and Plumbers....Hmmm I ask you, who the hell wants to work wi bombs an stuff!!??

    Any idea where you want to get posted to, or don't you get a choice anymore? :D

  2. It revs freely in neutral, so it's just happening under load. I set the valve clearances already, but that didnt do anything. Dont know how to set timing, but i dont think thats the issue since it only happens under load. The vaccum pipe looks ok but i will check again. However, switching the petcock between prime, res, and on has no effect.

    Standard air filter and airbox or aftermarket K&Ns or similar??

    I've had similar problem(but may be totally different) and found that when I taped up half of the length of the K&Ns , thereby restricting tha mass of air, the problem disappeared! Maybe just lucky,who knows? ;)

  3. i don't think if they've got an o-ring on the needle valve, mine doesn't on a '72 cs5-e (mikuni) but he'll have to confirm

    No probs. The o-ring I'm thinking of doesn't sit round the needle valve but round the brass sleeve that the needle sits in.

    Thats been a problem on a lot of my keihin & mikuni carbs on singles, twins and fours.

    Certainly worth tearing the bottom end off the carbs tho' eh? ;)

  4. Like the title says, I am experiencing a complete loss of power above 6k RPMs if i twist 1/2 throttle or beyond - it wont even rev past 7k. If I apply less than half throttle, it will happily go to redline. I have adjusted my floats to spec, and have tried it with floats adjusted to 25mm. I put in new main jets (135s), and cleaned+synced the carbs again but it still doesnt want to rev. The bike is running well other than that. any suggestions are greatly appreciated

    Hi bud,

    is this happening under load or just when you're revving it in neutral?

  5. Righto.

    Then it must be a problem with the carbs. What would cause the fuel to start dumping out of the bottom of the carb (vent/overflow?)

    What regulates/shuts off fuel flow in the carbs that might be at fault?

    If you take the float bowl off the carb(s) you'll see the float needle valve on the main body of the carb. It sits between the floats and is normally under a small tang that pushes it up when the bowl is full. If you remove the swivel pin and take off the floats, the needle valve should drop out.Pull out the brass body that the needle was sitting in. Inmost cases on old bikes/carbs it's the o-ring seal on the needle valve body that has hardened off and is allowing fuel to flow through and drain.The needle can also wear but I'd go for the o-ring.

    However I'm also assuming that the floats are at the correct height?

    ;)

  6. Hey mits, don't give them an excuse mate. Be lucky if half of them even look through the windscreen!

    I've had countless near misses when half blind idiots have pulled out in front of me, and thats when I've been drivin a huuuuge Scania fire engine. Yes, with the light bar, strobes and wailers on!!!!

    They get in their metal boxes, heater on,stereo on andswitch their brain off. Grrrrrrrrrrr!

    where's me oil of primrose.....quick!

  7. Hi folks,

    does anyone know if the front (offside)caliper from a 79 xs650 can be interchanged with any other yammy model??

    Failing that, does anyone have a spare one they can sell me, or even just the pad securing bolt?

    It's a looooong story!!

    cheers,

    Pete. ;)

  8. Thanks for ideas folks, I think I was probably missing the obvious.

    After cleaning the pilot & main jet it'll start, albeit reluctantly, and run.

    However when it's stopped it's a boooooga to start again, so I'll take the advice and strip and rebuildthe carb !

    Forgot how nice it sounded.

    cheers.

  9. Hi folks,

    finally pulled the SR out of the shed after about 5 years of hibernating behind various other motorised bicycles. Changed the oil, new plug, new fuel, checked the valve gaps, cleaned the carb, repaired/replaced various electrical connections and, b$$$$r me, it refuses to start!

    Nice big juicy spark but no go.

    I get the odd backfire after 5 or 6 kicks and it seems to want to pick up but just stubbornly puts its foot down.

    Oh btw, its got a Boyer Bransden ignition unit fitted.

    Anyone got any clues or advice???

    My right leg is REALLLLLY sore!!

    thanks.

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