Recent content by vampire

  1. vampire

    Rotrex Hayabusa build

    It s a very good conversion, i run it for over 8 years and 30k kms without any problems. Only modified some things, but these were not neccessary. Only once replaced the belt because of a different pulley ratio. But when you got the possibility and ability to program and machine it al by...
  2. vampire

    3 - 5 - 10 year plans

    Yes, i still got the BKing and very happy with it after 30k supercharged. Best thing to do on a BKing. Very reliable set up.
  3. vampire

    Rotrex Hayabusa build

    On higher revs, above 5k, it ran well. But on the lower revs on the vacuum side of the fuel map i had some problems . Wideband air/ fuel reading were disturbed by the lower exhausts. Instead of blowing gas out, they sucked air in down to the collector caused by the upstream flow which affected...
  4. vampire

    Rotrex Hayabusa build

    Imo there s not much of a difference in engine performance were the bypass is openend and you re running out of boost. The charger is driven and flowing air but there s not a serious amount of power needed to turn it because there s no back pressure. But it will take some power, that s for sure...
  5. vampire

    Rotrex Hayabusa build

    With my supercharger conversion from TTS came a 20mm bypass. I ran it from the start and it did the job. The spring load on this valve can be manual set so on part throttle it s open and as soon as you open throttle it closes. On that part i had no issues, it vents enough on part throttle on my...
  6. vampire

    Rotrex Hayabusa build

    Yes , i agree with you. But there s no need to go over 50mm with the application Boosted_MV is using.
  7. vampire

    Rotrex Hayabusa build

    There s absolutely no need to use more then a 50mm BOV. It s not depending on the boost level but the mass air flow.
  8. vampire

    Supercharged BKing

    Just passend the 30k mark with the supercharger conversion and still no problem at all. Bike runs like 20k before. The Rotrex is a real good unit with almost no maintance, just checking the belt slack once in a while and changing oil every 5 years . I doubt if it s really needed but better be...
  9. vampire

    Supercharged BKing

    Took the bike for a ride with the new pulleys and belt. Every thing seems fine. Datalog showed 11psi @ 8000rpm ,exactly the same as before with the v-belt which is a bit more boost then expected because pully ratio now is reduced to 1 to 1.09 , before it was 1 to 1.21.
  10. vampire

    Supercharged BKing

    No problem, must be a great time with a bike like that. At that time without the www. as it is now it was a lot more difficult to build something like that. Good memories!
  11. vampire

    Supercharged BKing

    About warranties i don't know and don't see a problem. A multi v belt well tensioned so there's no more slip will do the same as a cogbelt. The HTD belt is not a chain, so there's some stretch possible . In advantage , i don't have to put so much tension on the belt , and so less stress on...
  12. vampire

    Supercharged BKing

    Allthough it's not a real issue, it's something i wanted to improve or at least give it a try. The charger's been driven by a 7 rib v belt and i noticed when i speed up the pully ratio, it needs more tension to avoid slipping, especcially at higher revs acceleration at 100% tps. So i machined a...
  13. vampire

    Finally.........after A Lot Of Waiting Around For Parts She Is Finally Having The Supercharger Fitte

    Thanks for sharing all this! Good luck with your bike and keep it safe.
  14. vampire

    Finally.........after A Lot Of Waiting Around For Parts She Is Finally Having The Supercharger Fitte

    When you stay off boost, for as far that's possible, milage will be oke. But who cares, only thing to worry sometimes is where the nearest gasstation will be. Average on the Bking i guess somewhere around 25mls/g. With a 4.2 gallon tank you frequently have a break. Believe it or not but my last...
  15. vampire

    Finally.........after A Lot Of Waiting Around For Parts She Is Finally Having The Supercharger Fitte

    That's a lot of power! Do you run stock pistons and conrods? I got a smaller 90-74 charger with a larger pulley ratio ( 70 cranck 85 mm charger) to give it some more midrange power but on the dyno it got some belt slip and boost was limited to 12 psi max. At that point fuel is almost max out...
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