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  1. madprofessor

    Predator 212 to 420 swapout footprint, both ways...........

    Decision made, money deposited. Going to snatch the 15+ hp. 212 from SchizoBallz and plant it in the new BareBallz build, dropping a stock 420 in where the 212 had been. Without me researching HF website, measuring stuff, etc., how's the footprint for the old 212 going to match up with the new...
  2. madprofessor

    Ya'll juz gots ta see dis............

    On my homepage tonight, kids with more money than brains...................
  3. madprofessor

    Starting fluid risks for damage on Predator 212's...............

    Planning ahead here. Going to be firing off my current hotrodded Predator 212cc in the next few days after months of just sitting. It's only had the pullrope yanked through it a few revolutions every month without the ignition turned on, just to keep things splashed with oil. Willing to give it...
  4. madprofessor

    Walbro pulse facts............

    Linking below a Walbro page that explains lots of things I've wondered about their common 3-fittings plastic pulse pumps like the ones I'm accustomed to. There's enough info that it's certain some other folks can learn from it also, so sharing it here. Here's some of the notable...
  5. madprofessor

    Rocketman gokart made the MSNBC news feed............

    I always scan the 2 dozen or so headlines on my internet home page, and a story today was about The Rocketman and his new pulsejet gokart. What made it cool is he put not 1 or 2 but 3 pulsejets on the thing. Watching them slowly change from black to yellow to red to white-hot as he drives is...
  6. madprofessor

    Gokart dragging the driver on his face..............

    Watch this news feed of a security camera at the 1:40 minute mark as the unmanned kart reenters the picture, then the driver that's chasing it, and then at the 2:00 minute mark see the driver hanging onto the rear end and being dragged on his face down the street............click the MSN link...
  7. madprofessor

    Happy Birthday!................

    I have a friend whose birthday it is today, and the guy's had more birthdays than all of my ancestors and my church family that I've ever met. Many loaves and lots of fishes to all of you, and as a birthday wish to him, share your spare with those who have less. Merry Christmas from the Holy...
  8. madprofessor

    Polarity reversal, inverter or not, A/C or D/C, need info (sic; lessons)................

    Got all my welding knowledge pretty much OJT over some 40 years, never been to an actual welding class in my life. Classroom is the missing part here, basic book learning about reversing the stinger and the ground, using an inverter type welder or other, difference between A/C and D/C welders...
  9. madprofessor

    Just for gokart nuts to be entertained...............

    Gerbil in a Microwave - Joe Cartoon....................see the rest at...................www.joecartoon.com
  10. madprofessor

    Velocity stack on a Predator 212 stock carb w/.036 main jet.............

    Been watching Engine Masters on TV, and they've got me thinking about using something like those adapter manifolds for different carbs as a velocity stack. Carburetor VM22 Intake Manifold boot for Honda GX200 Predator 212cc 196cc GoKart | eBay ..............for example, but I'd make my own. On...
  11. madprofessor

    New GoPro? Oh goody, where's my credit card.............

    My internet homepage scrolls the news of the day, interspersed with ads obviously based on my internet history. Just saw one where the new GoPro HERO10 camera is now available, and it's discounted by $150 too! Yippee, gotta have it, cuz it's new and a gadget! Discounted to only $400 !!! Gokart...
  12. madprofessor

    $10 ebay tach/hour meter instructions gibberish, this video actually explains it...............

    Haven't been able to feel absolutely certain that the el cheapo $10 ebay (free shipping) LCD digital tach/hours/service interval meter I've been recommending to folks is set right for my Predator 212cc 4-stroke engine or not. The seemingly low rpm reading at a normal idle is about 800 rpm. Does...
  13. madprofessor

    Lengths of gokarts/minibikes drag strips???

    Can't figure out from youtube videos how long a standard drag strip is for gokarts and minibikes, too many, too confusing. Seems there are 60', 120' and who knows how much longer ones they do drags on. I want to know what my kart builds are doing on a fixed distance from a dead start for...
  14. madprofessor

    Circlips For Dummies.............What's an E-Clip?

    Ever heard of an E-Clip? Have I been living under a rock all my life? Been searching online everywhere for a small assortment kit of circlips, from which I'll replace the circlips on my 212 hemi rocker shafts, and have that assortment to keep on my bench. Looked everywhere from Home Depot to...
  15. madprofessor

    Predator 212 governor

    Anyone know how to lower the 3600 rpm setting on a Predator 212 governor without stretching out any springs to do it?
  16. madprofessor

    Predator 212 governor adjustment for speed limiting...........

    This came up in a "Gokarts Discussion" post where we talked about limiting max speed for a little kid on a gokart build. It occurred to me that very often we use the engine's throttle limiting screw (with the spring around it) to limit how fast a kid can go, but that of course it also limits how...
  17. madprofessor

    Hard solid clank of driver engagement, not slow........

    30 series type generic CVT got tested on hotrodded Predator 212 running 6:1 gear ratio off of CVT on 520 lb. kart plus 165 lb. pilot. Everything brand new except for the pilot with the iffy trigger foot. Have to baby the gas pedal (plenty of total travel in pedal) on a standstill start to get it...
  18. madprofessor

    Colored springs ratings on chinese TC..........

    Want to change springs in my chinese TC for higher stall. Just don't know how different spring colors equate to stall rpm. TC equates to a Comet 30 asymmetrical, so Comet spring colors might be the guide to follow to the highest stall springs. Anybody have any answers? Any knowledge would be...
  19. madprofessor

    Predator 212 compression, stock and modified............

    A member posting on another thread, BigWes, advised that the stock Predator in that thread should have 90-100 psi cylinder compression. Don't know where he found that, but I looked for it a long time, never did find it. You out there Wes? Okay, anybody, please help me answer my compression...
  20. madprofessor

    How do you post a site link, like a youtube video, parts list, etc. ?

    Anybody can talk about some parts they got, or a video they saw, or a vendor they recommend, etc. Everybody but me seems to know how to post a link to that in their discussions. How do you do it? How do you do it without having to write down and then type in 50-60 characters from the header line?
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