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  1. kevbo

    ELECTRIC IS HERE!

    I have been told the remote diesel powered EV charge stations burn more fuel during a charge than a gas car does for the same distance traveled. California now needs to outlaw charging a battery with gas generators.
  2. kevbo

    ELECTRIC IS HERE!

    I know that at 300lbs, a 135hp electric ski would be fun to ride but wont have enough run time. At 507lbs it may have some run time but is too heavy to be much fun. It takes the same power to push a ski 20mph as it does to push a Tesla 70mph. The Tesla gets to carry 2000lbs of batteries.
  3. kevbo

    Super Jet WHAT Octane!?

    Make sure the top carb adjusters are set rich of peak rpm and dont hold it wide open when the fuel level is low. You can easily go from 100% reliable to a damaged piston with a few air bubbles in the fuel line.
  4. kevbo

    Need your input on new ignition "brain" design

    TDC can and should ALWAYS be confirmed with a simple piston stop.
  5. kevbo

    Looking to Project X2 L2Buy and advice!! please

    If you arent too big and want a fixed steer think about modding a Superjet. That will provide better acceleration and are easier to find parts for, plus it will be easy to sell. The biggest problem with X2s are that they are OLD and need work. The most importand question is how much time ond...
  6. kevbo

    Polished aluminum in salt.

    It will tend to tarnish, how fast it happens depends on the alloy. The only way to keep it like new is to spray clear over it.
  7. kevbo

    Saw this the other day... Brazil, of all places

    Thats the new Seadoo.
  8. kevbo

    SN Superjet fix and improve build

    Make sure the bolts are not punching through the black pump shoe. If they are it will cause lots of vibration.
  9. kevbo

    Trial by fire (or maybe sunken in water?) Newbie JS550 build

    Just undoing all the previous owners shenanigans will keep you busy for a while.
  10. kevbo

    What are you doing to save the planet ?

    The planet can be in its natural state if humanity would live like it did before we could control fire. The industrial revolution and population growth has and will continue to slowly change conditions beyond what they would otherwise be. Very few in a group will willingly pick up and dispose...
  11. kevbo

    10/16 vs 9/15 for mildly modified 750sx. Please help recommend

    That pipe with a low port cylinder will work with higher pitch impellers. I have not tried the Hookers so Im not sure how they load. The lowest pitch Solas Dyna fly is probably a little too much load. The 12-18 small hub Concord would be close. Look for no more than 1.5 inches between the...
  12. kevbo

    AM waterbox

    Most of them are single chambers with the outlet tube near the bottom. Wrap around pipes don't allow enough room for anything else plus riders like the noise.
  13. kevbo

    SXR 800 Engine with 44s Tuning Help

    I can make the idle mixture perfect with plugged jets and any pop-off pressure since the bottom screw is the main control at that throttle position.. The top screw can generally add up to #20 to the main jet so those can be less than perfect. The main jet could be plugged if the top screw...
  14. kevbo

    SXR 800 Engine with 44s Tuning Help

    You need to learn how to tune the top screw/main jet. Start rich then slowly lean, nobody can know exactly where it will end up.
  15. kevbo

    Superjet exhaust on waveventure 701

    It can work with a Superjet head, get one newer than 1995, they will not have a 61X casting. It will also need to be milled in order to have any kind of throttle response. The 62T cylinder has a taller port and larger bolts so you need to carefully position the manifold when cutting the holes...
  16. kevbo

    Time area targets

    Buy a cylinder thats been ported for the superstock class. That is the max for an OEM cylinder. Most riders want better response with pump gas than race porting generally provides.
  17. kevbo

    CEET Racing Chin Pad 650SX

    Any 650 pads that are in good shape is a rarity now. That one is surely over 20 years old, I got a new cover from hydroturf for $50 last year.
  18. kevbo

    Time area targets

    I would back off those numbers for your first attempt. Start with a stock 62t cylinder and get a good pipe. Spend time learning how to tune the carb and pump first. Once that is perfect you can cut the cylinder a little at a time, until you ruin it. At that point you will have more tuning...
  19. kevbo

    Time area targets

    The main difference is a jet pump requires max torque near its full throttle RPM since its load squares with RPM. A vehicle on wheels needs to make just enough torque at its shift point where a jet pump requires peak torque at its full throttle RPM. There is some compromise between throttle...
  20. kevbo

    2023 Freeride Sponsor list

    It seems like there are more sponsors than riders.
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