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Everything posted by Mrowka

  1. I can see why 4WD would be faster on low grip surfaces, but would 2WD be faster on high grip? All other things equal, a 2WD car weighs less and has fewer drivetrain losses.
  2. I bought some kind of paint eraser from Hobbyking and it worked as advertised.
  3. Testing a fairly powerful helicopter with a brushless motor, had a weird accident on takeoff, hit my left hand, tore my hand up pretty good and didn't do the helicopter any favors either. Oh, well, back to the old drawing board.
  4. A helicopter attacked my hand last night and caused significant injuries. Ouch.
  5. I built a re re Kyosho Ultima. All well and good and built according to instructions, but there is a lot of side-to-side play, an un-Kyosholike amount of play in both front and rear A-arms and bearing hubs. Definitely more play than either in of my re re Javelins or my OG Javelin. Dunno what is up with that, but the question remains, whether to do anything about it? If this were an on-road car, I'd break out the shims, but it isn't. So how tight does everything have to be for an offroad buggy?
  6. FWIW, my reamer doesn't look much like that. Mine is stepped. I have ordered a different one.
  7. About to finish a Kyosho Ultima and there are seven holes to be drilled in the body for the cage to mount to. How do you drill clean holes? I have a reamer, but testing it on scrap Lexan gives awful results. I've had my best luck using a fresh sharp Xacto knife as a reamer, but even that isn't quite perfect. I have tried using a cone-shaped grinder on a Dremel and the results are clean but hard to control. Also, do you drill before or after painting?
  8. Also, a sanding block is helpful to make sure straight lines are in fact straight.
  9. Don't use thread locker on anything with ABS plastic. Someone here mentioned candle wax. You can also use white glue on the threads, or a tiny dot of superglue (which is chemically quite similar to some threadlock compounds but won't harm plastic.)
  10. I am far from an expert, but as an outsider, Tamiya seems to be a builder of drivable scale-like vehicles. Looks are foremost. That's also why Tamiya spends so much time on design and on appealing and realistic box art. This is intended to sell what they are making, and what they are making is almost a bigger Tamiya scale offering. A bigger Tamiya scale model that you can play with. Winning races isn't what that vision is focused on. Schumacher is making something different and what they are making doesn't need to look cool or vintage or scale-like.
  11. Helped a little person substantially complete his Super Storm Dragon. Still gotta finish painting the driver and doing the decals. He wants box art.
  12. My little man, assembling his Christmas Super Sand Dragon.
  13. When my little man was three or so, I bought him a toy grade rock crawler. Slow, easy to handle, simple, tough and fun to climb over obstacles. A year later, he got an Associated RC28, which he named "Donut". That Donut has survived my son's constant abuse is a testament to something. Now he is six and drives the Kyosho and Tamiya buggies that I have built, and has picked up basic drone flying. Admittedly, he has a lot more natural situational awareness than I do. He always wants to help with repairs, and he imagines himself a little expert on the relative merits of Kyosho versus Tamiya, gearing and motor turns, not to mention helicopter esoterica. For Christmas, he got a Sand Dragon, for many of the same reasons he got his original crawler. He named it "Cricket".
  14. Building various Kyosho Javelin and Ultima re res, and being unable to find the SCW021 heavy duty slipper clutch pads in these COVID times, I am wondering if anyone here knows what slipper clutch pads are made of? Does anyone know of a substitute material? Before I try experimenting with various materials, I thought I'd ask here.
  15. I didn't have a buggy when I was a kid during the 1980s, and I have no nostalgia for those days at all. I suppose that I like Tamiya because I like the way they look, like a more or less scale buggy, but I don't have much loyalty to Tamiya or any other brand.
  16. If I understand correctly, that line of analysis appears to assume that price increases are proportional to cost increases. I'd see it as follows: if the cost of ABS is $5.00, in a kit that retails for $300, even if the price of ABS triples, that shouldn't make the price of the kit go up that much for the manufacturer to realize the same profit per item (assuming they can sell all they make). Of course, I am again assuming that ABS really is that cheap, relative to everything else. Definitely an interesting topic.
  17. I'd be happier if Tamiya would provide parts support for the buggies they've already rereleased.
  18. I suspect without hard evidence that the design and tooling costs far outweigh material costs in producing a kit. In other words, aluminum would have to really become cheap relative to ABS to justify designing a replacement aluminum part and then the tooling to make that part worthwhile in financial terms.
  19. Question: approximately how much of the cost of making a kit is materials cost,. specifically ABS plastic?
  20. Part of my logic in removing the track marshals was not only to make r/c racing more like 1:1 racing, but also to make races less predictable. A racer could be leading by a full lap, only to blow it all at the last second. The overall winner might be a mid- pack racer who happens to be the last one standing. I'm far from an expert, but from what I can tell, one of the differences between buggy racing and golden age buggy racing is that back then, stuff was changing radically all the time. A buggy that was the hot ticket a year ago might be out of date. A driver whom nobody had heard of six months ago might be the new champion. Regional scenes flourished. So did experimentation. Nobody really knew what might change things next. By contrast, racing today is competitive, corporate, professional and predictable. Everyone knows everyone else in the business, everything is a more or less known quantity. Removing track marshals doesn't fix much of that, but it's a start.
  21. I didn't have a buggy as a kid, but my parents thought any interest in R/C was nutso, at least after you turned ten or so. Then again, my father was a professional airplane pilot, with every kind of license known to western man, including an aerobatics instructor's license, military, ATP, jet, instrument, etc.. Not to mention a situational awareness that bordered on the preternatural. My father had skills that I would have committed terrible crimes to have, and he had no more interest in airplanes or flying than a bus driver has in busses.
  22. My friend the professor uses something similar. So does another friend who works as an electronics repairman.
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