Search:

Type: Posts; User: Tommy_T; Keyword(s):

Page 1 of 6 1 2 3 4

Search: Search took 0.00 seconds.

  1. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    I was wondering how the linear guides wound hold up in the harsh wisconsin
    environment.

    image below is after one winter.

    7594
  2. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    I do get this is a deadhorse type topic, but.

    I got big plans for the mule this fall and winter.

    the picture in my head for this next build(all wheel drive) has changed from
    just last winter....
  3. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    jwatte, lucky for me I got all that kind of stuff out of my system as a youth.
    my first job in electronics back in the mid 70's was fixing radar guided missiles for the army, so now I think ...
  4. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    jwatte, I was thinking more like big 110vac inverter for backup power for when the lights go out, or a 110vac weed wacker.

    but, lidar looks like something that would be fun to play with.
  5. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    jwatte, seems it tops out at 190F with heavy mowing, hilly terrain. when on flat blacktop 175F.

    the only problem with having unlimited batteries, is you then end up adding things like computers,...
  6. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    after 3 hours run time with outside temperature of 80degf, Alternator temperature 190degf, right motor 120degf, left motor 135degf, servo drive 100degf.
  7. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    Sweet! new 100A alternator is charging batteries again.

    for no other reason then to test the blowers for controlling the temperature that
    the alternator operates at, I got the same type...
  8. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    Thinking the alternator in the image below with it's fan internal may keep
    cooler with 500+ cfm of air movement then the enclosed type I tried first.

    maybe.

    today the outside temps reached...
  9. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    Crap, the alternator is at 85degf while mower is running, and batteries lasted 30min. ,
    that means alternator is cooked.
  10. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    with the blower running the servo motors are operating about 30degf cooler.
  11. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    I may have found the issue with the alternator, it seems these are single wire devices,
    that self excite, but I wired the excite input to 24vdc when the engine is running.

    that could over ride...
  12. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    Jwatte, I have room to mount a second blower on the other side, that would
    give me 540cfm of air on the alternator and woulds only cost 6amps of power at 24vdc.

    I don't know if the high heat is...
  13. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    I should now be able to test to see if moving 270cfm of air across the alternator
    can control the temperature it operates at.

    7565

    7566

    7567
  14. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    while I picked this task because I was thinking it would go fast(faster then most tasks I pick)(some last years).
    so I'd have time to finish the four wheel drive system on the mule before winter...
  15. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    EdZachery, you are correct about it being heart of the mowing season, but now
    I'm dealing with the heat of the mowing season, as it turns out alternators get
    damn hot. I installed a temperature...
  16. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    with the alternator installed and charging the batteries, this task is almost
    complete(just need to clean up wiring and make covers for the batteries) .

    7555

    7556

    7557

    7558
  17. Replies
    0
    Views
    979

    Making a mechanical gyro?

    I understand I could get a laser ring gyro for around $2000, but back in the 1970's
    I worked on a missile system in the army that used a analog mechanical gyro that
    was caged at a fixed angle when...
  18. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    Jwatte , I do hope they work better then the two position switches I got from Amazon also,
    which failed (sometimes worked, sometimes not)
    hard to complain when you buy 5 for 12.00 and free...
  19. Replies
    64
    Views
    11,502

    Re: The task (lawn mower topic)

    this season's build is a little different.

    while driving around chicago I noticed people using stand up lawn mowers,
    to find out why, what's the benefit I could have stopped and asked, but that's...
  20. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    the bucket also makes changing mower blades easier.

    7468

    7469
  21. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    I just looked up and noticed that it's march.
    time to turn attention to mowing, big build this season for dealing with grass.

    Lots of fun this winter! looking forwards to next winter.
    the bucket...
  22. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    I'm also not happy with the bracket design when used with the bigger motors.

    these bigger motors have OEM mounting holes (6-M6 tapped holes), but I added
    (8) 10-32 tapped holes to be able used...
  23. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    jwatte, the current motor bracket is made from 2pc .5" x 2.5" 6061 aluminium plate.
    the plates are bolted together by (4) 1/4-20 SHCS (grade 8) .
  24. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    7461

    the flexing of this aluminum bracket is due to
    the 6" distance between the mounting bolts and
    the chain sprocket.

    7462

    it could be minimized with a gusset added.
  25. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    With the bigger motor it's pointing up and is visible in the camera facing
    down on the bucket attachments.

    when I get back to Wisconsin Sunday I'll post video of it bouncing around

    this week...
  26. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    I would like to try to make the lifting frame out of aluminum and 10" more travel

    but all the brackets out of steel

    breaking up ice on the streets is very hard work on the mules

    also it...
  27. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    My concern is not some much that the bracket
    could fail, but that it could flex enough to let
    the chain jump a tooth.

    With a steel bracket the motor would stall before it jump a tooth.
  28. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    Can't win them all.

    the motor I planed to use for the tilting of the bucket use an inline 250Watt.
    7457

    and with it being only 250W I made it's brackets out of aluminum,
    but, the first motor...
  29. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    the two outside batteries could quickly changed out.

    7441

    these type connectors should make the change over
    plug&play,some more.

    7442

    but they each weight about 100lb, so going to have...
  30. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    jwatte, seems doable
  31. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    https://www.youtube.com/watch?v=fMdravj3FDA&feature=youtu.be
  32. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    because I can limp along(get the job done).
    the next issue needing attention is charging.

    I have a few 24V chargers, 5 Amp, 7 Amp (but wanted 20 Amp).

    my price range at the time of the lift...
  33. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    current camera setup

    7440

    the snow bank is made by the bucket
  34. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    jwatte, it's too limited by the small front casters right now, but once the back half
    is complete(4 wheel drive)...then it's going to be something to behold.

    even with it's current limitation...
  35. Replies
    16
    Views
    5,976

    News/Announcement Re: Turtlebot3 with Openmanipulator

    looks like hours of entertainment
  36. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    because we have 6" snow coming in tonight I heated my
    home work space and made the power supply changes.

    removed Wifi router and cameras form the 110vac inverter.

    the only thing running on...
  37. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    jwatte, that is correct.

    7438

    I got a few of these last year for that purpose, but the 110vac inverter was just too
    easy to implement (plug & play). I guess easy isn't always best(or...
  38. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    I was wondering if I could tilt the bucket back enough to keep
    the snow in the bucket when lifting.

    7436

    7437

    but, not ideas are good ideas.
    I was thinking it would be nice to have all...
  39. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    After playing with the bucket for a short time it became clear
    the switch idea isn't going to fly, too much time.

    so I added a few more push buttons to the remote controller.
    7433

    I like this...
  40. Replies
    249
    Views
    89,061

    Project Re: More Mule then Rover?

    I hope mother nature delivers some snow soon, I need to
    test with snow now.

    jwatte, I can only tilt back 10deg with the current bucket support arm.
    and because that arm is the weakest link(1/8"...
Results 1 to 40 of 207
Page 1 of 6 1 2 3 4