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  1. madprofessor

    Electric ball launcher (go kart wheels)

    Sally spent a small fortune on her tennis ball server back in the late '60's, still unsure if the lesson fees ever got her squared on the costs, I understand the costs involved. I think you're looking at the locomotion as your answer, while I think the more appropriate view is of the materials...
  2. madprofessor

    Franken buggy is getting paint

    Not like crap, just like a different kind of idea, go whole hog and forget what anybody else thinks. As for my own opinion specifically, if that's Nomex aluminum, letting you see out while keeping dirt from getting in, yeehah! You have a winner. Purely my otherwise opinion, don't panel over any...
  3. madprofessor

    Latest build

    I should clarify about the ape-hangers..............While they can be fairly controllable short of getting the mini sideways, it's the apparent forward tilt of the mocked up bars that makes it look so dangerous to me. That same angle towards the rear would double the controllability.
  4. madprofessor

    So close

    There's a reason I didn't broach that subject with you before.............There were much more basic things you needed to eliminate first, ie; matching chain and sprockets' sizes to all being the same, and aligning everything perfectly. Myself would've gotten confused with an overload of...
  5. madprofessor

    'wittle 'wesistor (Mini Jeep)

    Is there anything cuter than a sleepy fuzzball cat? Love that pic. Hope your kart doesn't come out "cute" too, anything mean would be better.
  6. madprofessor

    Latest build

    Do you have much experience riding with ape-hangers? Not the same on a motorcycle as on a minibike. Very unstable, be sure about it before building to or locking anything down until you know how it'll handle.
  7. madprofessor

    3.5 hp TREK trike

    I'd pay art collector kind of money for a good picture of that. BTW: Friend of mine gave me their "Monster" album for .................. whatever occasion, can't remember now.
  8. madprofessor

    4WD or RWD

    micro, take notice of how FA's motor power is chained to the front wheels. They're much bigger (diameter) than the little rear wheels. I see two advantages to that............ With all that power slamming on, they'll be less likely to spin the tires on unpaved areas, and if there's enough power...
  9. madprofessor

    Any Steering Options?

    Ditto that. My HF 4.5" angle grinders are $15-$20, I buy cheap grinding wheels in lots of 10 online, and even the occasional grinding/sanding flap discs. Relieves any frustration and stress about the quality of my welding with my Northern Tool 80 amp Klutch stick welder, (now $160).
  10. madprofessor

    Funder wheels go kart tire

    Average gokart wheels are small, and a bit deep-dish. A 2" long valve stem that's already deep inside the dish of the rim and pointing straight at the opposite side of the rim, with the axle stub protruding in the center, can be extremely difficult to get your hand in and an air hose on it, and...
  11. madprofessor

    Go-Kart Steering Very "Heavy" (Hard to Turn)

    Good point, I should have asked............. What's the width grip-to-grip of that yoke?
  12. madprofessor

    Need other axle to axle measurements

    Venom Marvel Universe Renewal Edition ArtFX+ Statue (fun.com) Thanks Tu tony, just saw about a million scary looking prints of Venom, really popular dude. The link above isn't quite so nasty as the one you showed from Iron Studios, but that one's no longer available, and the one next to it is...
  13. madprofessor

    Grampa and his gang

    2 things: Thing 1: Outstanding job on the tall flags for every kart! Everyone should be doing that. Thing 2: You're the only one with a front tire directly in your face, so front fender is absolutely required. I'm wondering if your available riding area has the kind of barf sand that would make...
  14. madprofessor

    Funder wheels go kart tire

    Replace, do not patch, the innertube. Look for sharp things embedded in the tire itself (that punctured the tube inside of it). Absolutely do not buy an innertube with a straight valve stem, use only innertubes with L-shaped (aka "bent stems) valve stems. Go Kart Tire Inner Tubes (bmikarts.com)
  15. madprofessor

    Go-Kart Steering Very "Heavy" (Hard to Turn)

    Can't recall what that would look like, but I'm feeling a little concerned about the yoke as it sits. Companies over-use the word "ergonomic" to try for sales that get more money from you, but there are times when ergonomics that actually work that way would be helpful. I think the rigid...
  16. madprofessor

    Any Steering Options?

    That tab sticking out for the tierods is called the Pitman arm, and the tierods directly connect it to the spindle arms. Since your spindle arms extend backwards from the spindles, they're called trailing arm spindles. If extending forward instead, they'd be called leading arm spindles. How much...
  17. madprofessor

    'wittle 'wesistor (Mini Jeep)

    So you must have married Saint What's-her-name, the polar opposite of my first 3, but my fourth was at least a minor Saint. BTW: Jif for me too, Peter Pan if it's a BOGO, but you couldn't give me crunchy any-butter of any kind even if free.
  18. madprofessor

    Need other axle to axle measurements

    In post #8, with the pics of Venom seat covers, is that not also a picture of a 3D Venom statue? I understand what you're saying about laying squiggles and veins etc. on the new kart shell for a bas-relief kind of realism, pretty cool. Just wondering about the statue, it's delightfully freaky.
  19. madprofessor

    Need some advice Please

    Yes it does, but what you really need to know is how many engine revolutions it takes to turn the rear axle one time, ignoring any gearing in between. If your engine's output shaft is directly coupled to its crankshaft inside (is literally the end of the crankshaft, one piece), then every...
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