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  1. madprofessor

    Compression release cam sticking?

    Not familiar with a starterator, but if it's supposed to be part starter, where's the ring gear?
  2. madprofessor

    Biggest two seater gocart for a tall guy?

    A blind man wouldn't have much trouble finding either one of these guys. They have their own orbiting satellites around them. Guessing the orbits are kind of elliptical, given the already existing spaghettification stretching all that mass out. Nyuk, nyuk, nyuk!!! I know you can both take a...
  3. madprofessor

    Tyre size on a gokart

    11" and 10" tires? I wouldn't stagger the sizes any further than that, just based on the need for flat cornering on rough grass. What size rims are you using ? , sounds like those tires are for 5" rims.
  4. madprofessor

    Drift Cart Engine

    If you're putting those PVC skins around the rear tires like for drifting on pavements, anything from a Predator 212cc on up should do it, they slide like Olympic curling stones. If you're not doing that, and just want to spin the tires for doing doughnuts and powerslides, I'd jump on up to a...
  5. madprofessor

    Near new chinese 40 series sticking - considering a comet 40 or 44

    I really despise both the solid and the single-split locking collars with those awful setscrews in them burrowing into the shafts. Looks like you used a proper double-split collar by the driven pulley outside, a single split by the right-hand bearing, and .................... another...
  6. madprofessor

    'wittle 'wesistor (Mini Jeep)

    You could be right if it rides enough like the 1999 "sporty" 2-door Northstar V8 model of the 150 mph Eldorado. Closest you can come to eliminating that famous floating ride of the average Cadillacs. Positive single-bounce suspension, obvious sway bar(s) that reduce shoulder-dive in the hard...
  7. madprofessor

    Fuel pump vacuum question

    diyperformance is where I've been getting Walbro fuel pumps, and also every hotrod racing part for Predator engines, all using the Walbro. Read everything down the linked page. Jerry explains ways you can run your pulse from. BTW: It's the pulsing of the engine with every revolution that powers...
  8. madprofessor

    Compression release cam sticking?

    That's the 2 best ideas you could have, assuming you don't want it to blow up.
  9. madprofessor

    C3 Kart Build - In Progress

    Oh yeah! If Dana was a 60 year old woman, I'd marry her. Hardcore believer in big ring gears and heavy metal.
  10. madprofessor

    ST2-NG Pre-build "Think Tank"

    You might be surprised how some flimsy everyday stuff can work really well and reliably for air movement. I advised Patty Moise's dad on junking the 3" Alumaflex fart-fan piping he wanted for her front brakes for some common 4" spring-steel-wound vinyl laundry dryer piping for them. Worked...
  11. madprofessor

    Compression release cam sticking?

    It's not 1950 anymore, but is vapor lock still a thing? That was one way it used to act on those earlier engines.
  12. madprofessor

    'wittle 'wesistor (Mini Jeep)

    Thanks for that heads up, F.A. Based on the vertical shake of the video, I've decided to go with the 750# shocks. Is that what you have on that kart? Pretty sure my kart's so much heavier that there will be some increased action on the shocks. Going into rapid build mode so I can sell it off...
  13. madprofessor

    Throttle Linkage Question

    It's a matter of the cable moving through the sheath to begin with, and any resistance in your pedal action added on top of that. Just know this.................. Cables are designed to be PULLED through their sheaths, NOT PUSHED through them! Cables can bind up, bunch up, hang up, screw up when...
  14. madprofessor

    Compression release cam sticking?

    Well, I managed to copy an old thread of mine here, but erased everything I said in a reply to your post. Won't do it over, just check this old thread and decide if you were saying you almost broke the rope trying to pull it through the compression stroke, or if it was snatching back on you...
  15. madprofessor

    Grand Daddyish build

    Agreed! Have seen way too much of it through my son's spoiled friends to believe there's been a whole lot of hands-on Daddy teaching at home about the physical world and how to live well in it. Absolutely correct, Teacher. A close look at my setup however, might reveal how I made the joints...
  16. madprofessor

    C3 Kart Build - In Progress

    Denny, you'll do fine, as long as you can get that light rear end to hook up. Don't swap out the spring for one of the lightweight fiberglass ones. Warrior, I feel pain for you. My 1980 was about as road-course-worthy as a pair of ice skates. Even with sticky B.F. Goodrich TA radials all around.
  17. madprofessor

    Installing Whip Light

    4' whip light would be cute. Maybe you could get some pretty neon lamps for it. However................ If you want it for what they are best at, that whip should be about 8'-10' tall. They're best at showing other riders where you are in advance of cresting a hill, dune, hidden spot, or...
  18. madprofessor

    'wittle 'wesistor (Mini Jeep)

    Finally. Someone using those little 100mm "shocks" that might be able to critique on them. I've got 3 of those in my ebay shopping cart for use in the rear as the short travel "flat track" version of my transformer kart. I'm holding off on 750# and 1500# units. What I need to know is if there...
  19. madprofessor

    Grand Daddyish build

    Sounds like the angles being discussed aren't sharp enough to affect what I'm thinking about, but want to chime in anyway............. We're all familiar with increasing possible wheel travel by slanting an overly stiff coilover away from the vertical for a greater ratio between wheel travel and...
  20. madprofessor

    3.5 hp TREK trike

    Yeah, no kidding! I felt something slamming shut just reading that.
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