Best sources for motors and best make to use

Discussion in 'Propulsion' started by Ironbeard, Apr 14, 2021.

  1. Ironbeard

    Ironbeard Active Member

    Joined:
    Jul 19, 2012
    Posts:
    153
    Location:
    SoCal up in the San Bernardino mountains
    Seems that a lot of sources I knew from back in the day are long gone and a lot of closed down due to covid or are simply not taking any orders.

    Back in the day we used Maxon motors but haven't seen any around or I may be looking in the wrong area.

    Also what are the best size and make of 6v-12v motors for cruiser to battleship size Big Gun ships these days?

    Best sources for builds: Balsa, electronics, gears, bits and bites?

    THANKS!!
     
    Last edited: Apr 14, 2021
  2. Devasen

    Devasen Active Member

    Joined:
    Dec 23, 2020
    Posts:
    41
    Location:
    Arkansas
    Servocity is a good source for gears, pullys, chains, and they have some analog to digital control boards you can use for solenoid/pump control too.
     
  3. BigGunJeff

    BigGunJeff Well-Known Member

    Joined:
    Sep 26, 2014
    Posts:
    236
    I've been very happy with these, and they're extremely inexpensive. I usually pick up 10 or so to justify the shipping.


    Johnson motors are pretty good, and I've had great luck with them for use in direct drive for props on all kinds of ships. I just add capacitors to keep the EMF down.

    https://www.goldmine-elec-products.com/prodinfo.asp?number=G9332
     
    wfirebaugh and Nibbles1 like this.
  4. Z Boat

    Z Boat Well-Known Member

    Joined:
    Jun 17, 2015
    Posts:
    250
    Location:
    Roseville California
    Jeff is correct on these motors. I am using them now and the only thing is they are weak at 6 volts but run very well on 8.4 to 12 volts with good torque.
     
    Nibbles1 likes this.
  5. Xanthar

    Xanthar Well-Known Member

    Joined:
    Sep 13, 2015
    Posts:
    657
    Location:
    Upstate NY
    After reading BigGunJeff's recommendation for those motors, in various threads, I ordered 10 of them. Mine are all marked 30011 & 371402 which is a little different than what others have noted. I'm having a hard time finding the specs for these. Does any one have any more info on them?
     
  6. Xanthar

    Xanthar Well-Known Member

    Joined:
    Sep 13, 2015
    Posts:
    657
    Location:
    Upstate NY
    Do you have any recommendations for capacitors or couplings that work well with these motors?
     
  7. Commodore

    Commodore Well-Known Member

    Joined:
    Aug 8, 2013
    Posts:
    565
    Location:
    Sunny TX
    Hmm ... capacitors. Well, Radio Shack is long gone, but I used to get something like these to use on my motor terminals:

    View: https://www.amazon.com/Guitar-Capacitors-0-047uF-Capacitor-10pcs/dp/B08CSNDJ89/ref=sr_1_5?crid=3DS8ITHQ5PPPM&keywords=047uf+capacitor&qid=1650326182&sprefix=.047+uf+cap%2Caps%2C131&sr=8-5


    As for couplings, I'm a fan of gearboxes. If you must use a direct drive type system, I like the old Dumas dogbone:
    https://www.horizonhobby.com/product/complete-coupling1-8/DUM2008.html
    I haven't used them in a long time, though, and I'm not sure if they're up to the power handling of modern (i.e. brushless) motors, but for a li'l 260 or 380 motor, they should be fine. The smallest available is 1/8", so you might have to use a brass sleeve on the motor shaft, etc.

    Good luck!
     
  8. Kotori87

    Kotori87 Well-Known Member

    Joined:
    Nov 8, 2006
    Posts:
    3,530
    There are metal drive dogbones similar to the old Dumas ones. I've never been a big fan, since they are loud and any motor that's low enough torque to handle a dogbone is also low enough torque to use a fuel-line flex coupling. same effect but much quieter.
     
  9. BigGunJeff

    BigGunJeff Well-Known Member

    Joined:
    Sep 26, 2014
    Posts:
    236
    Xanthar likes this.
  10. Commodore

    Commodore Well-Known Member

    Joined:
    Aug 8, 2013
    Posts:
    565
    Location:
    Sunny TX
  11. tgalx3

    tgalx3 Well-Known Member

    Joined:
    Jan 20, 2010
    Posts:
    704
    Location:
    Snohomish, WA
    Are these 550 motors? How can you tell the size from the page?
     
  12. Xanthar

    Xanthar Well-Known Member

    Joined:
    Sep 13, 2015
    Posts:
    657
    Location:
    Upstate NY
    They are "380"s or maybe "385"s depending on who's part numbering scheme you prefer. The motor can is roughly 38mm long. They are smaller than a typical 550 but, because they have 5 poles and can take a fair amount of voltage they have good torque and power, especially at that price!