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Doc_Brown

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Everything posted by Doc_Brown

  1. Doc_Brown
    Why don't you turn the tires inside out and trim the rubber?
  2. Doc_Brown
    This is what I brought, my mistake $15! Urgh http://www.ebay.com....984.m1439.l2649 I was under the impression that it would be higher Rpm then geared down to 1000 after the lil gearbox. I guess the motor actually does 1000rpm, or it is a dud. Are you sure that FC-280PC is used in XL motor? I thought FC-280PC was used in M and L motors. Are you sure that it is 800ma cutoff? I thought it was 2A?
  3. Doc_Brown
    Awesome! Did you have to cut the rims to get them to fit?
  4. Doc_Brown
    O M G! That is truly insane! I'm seriously going to think about making custom wheel rims now. I wonder how much it costs to get something like that made. Anyone know the tires??? If I had those wheels I would make a truly awesome monster truck.
  5. Doc_Brown
    That is soooo cool!!! Nice trick with the magnets. Does it really work? Can you turn on the motor with the magnets there?? I just got a $9 motor from China, which is rated at 12V 80ma 1000rpm. Well I was very disappointed! From 6v to 12v there is no Rpm increase what so ever! It feels lifeless, SO maybe the magnet trick will work. :)
  6. Doc_Brown
    Very nice so far! :thumbup: And that mess is frightfully familiar!
  7. Doc_Brown
    OMG! I totally love this! NO you did not go overboard with the frame, its just soo Tim Cameron, (Showtime, I think its called) Can't wait to see this new tire too. Great job! :thumbup:
  8. Doc_Brown
    Sweet. I can't quite see how it steers? Any more pics?
  9. Doc_Brown
    Thanks Dluders! And well done Mbmc for an awesome small Tatra! Its performance is fantastic.
  10. Doc_Brown
    Arhh I see, thats pretty obvious. Thanks. Looking awesome Eff! :thumbup:
  11. Doc_Brown
    Very nice! May I ask why you have geared it 1:1 after the ujoint before the wheel hubs? Looking for speed?
  12. Doc_Brown
    WOW, incredible model! :thumbup: May I ask how long it took to make? And will your new gearbox be available to purchase?
  13. Doc_Brown
    Excellent job! I too have never seen receivers so low! Great mod, it looks great! :thumbup:
  14. Doc_Brown
    That is sweet! I have never seen such a small tatra before. Keep at it!
  15. Doc_Brown
    Those are really nice wheels! So any ideas on your next project piterx?
  16. Doc_Brown
    Great work! You have inspired me to try some motor modding. :thumbup:
  17. Doc_Brown
    This is too awesome! Forgive me for asking but I thought pneumatic cylinders haven't changed in like 15 years or so? How do they differ? Thanks.
  18. Doc_Brown
    DLuders is right, and after doing all that it really wouldn't be 9398 anymore would it! But your ideas are cool and remind me of this beast! Perhaps it could be done, and that would be too awesome.
  19. Doc_Brown
    Thanks for your comment. When one motor is idle the other spins around it in the diff causing a 2:1 reduction. Under high load the still motor will actually spin backwards, which actually saves gears crunching! Not really the best for Off-roaders but for instant change in speed its works.
  20. Doc_Brown
    Thanks for the input guys! Yes the idle motors do spin backwards under high load, XL motors would help a lot. Yes it has its con, but the advantage is instant change in speed! I feel this could be used in a medium car moc and will give it a try when I have finished my current project.
  21. Doc_Brown
    Nice work with the tape diffs, but wouldn't that make the Lego sticky after you remove it?
  22. Doc_Brown
    Thanks, yes it is a bit large. The output could be going straight to the rear diffs if you know what I mean. You need to visualize it 90 degrees turned. And this could also be 4WD!
  23. Doc_Brown
    AWESOME! I'm loving those wheels and soft dirt! Great speed! Dang I wish I had RC buggy motors! Great job. :thumbup:
  24. Doc_Brown
    Here is a pic of what I made using the switch. Then if you had a system to turn the switch from center to down, you would control the gearbox from high gear to low gear. I'm using this at the moment in my Moc. Hope that helps!
  25. Doc_Brown
    Hi Everyone! I just created this, and thought I would share, as it might give someone an idea for a us in a Moc or something. I'm thinking a car perhaps with seats on top. It could only be 3 studs high. It basically gears around the stationary motors and I'm guessing creates the following ratios. 1 motor equals 4:1 2 motors equals 2:1 3 motors equals 4:3 And 4 motors equal 1:1 output. Now if you could create a level on the remotes that engages 1 channel at a time, you would have silky smooth gear changes! Sorry if this has been done before!
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