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    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) .

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    7556

    7557

    7558
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    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...
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    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...
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    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...
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    Project Re: More Mule then Rover?

    the bucket also makes changing mower blades easier.

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    7469
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    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...
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    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...
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    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) .
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    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.
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    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...
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    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...
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    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.
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    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...
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    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...
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    Project Re: More Mule then Rover?

    jwatte, seems doable
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    Project Re: More Mule then Rover?

    https://www.youtube.com/watch?v=fMdravj3FDA&feature=youtu.be
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    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...
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    Project Re: More Mule then Rover?

    current camera setup

    7440

    the snow bank is made by the bucket
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    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...
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    News/Announcement Re: Turtlebot3 with Openmanipulator

    looks like hours of entertainment
  21. Replies
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    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...
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    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...
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    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.

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    7437

    but, not ideas are good ideas.
    I was thinking it would be nice to have all...
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    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...
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    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"...
  26. Replies
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    Project Re: More Mule then Rover?

    plan B for dumping worked out good enough to play with some snow.(kinda fast)

    with the bucket dump all the way up, it's tilted back a small amount(to help keep snow in bucket when lifting)
    I...
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    Project Re: More Mule then Rover?

    now with limit switches installed, and the plan B arm completed
    the dump setup can be tested(sweet).

    7431

    7432
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    Project Re: More Mule then Rover?

    baby steps.
    7429

    7430
  29. Replies
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    Project Re: More Mule then Rover?

    The way I first tested to do it the only way to adjust the chain tension was to
    shim the bucket support arm.
    7427

    and the motor brake had to hold all the weight that I put in
    the bucket.
    ...
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    Project Re: More Mule then Rover?

    jwatte, truth is, I'm not ready for snow.

    I'm going to try plan B for the dumping setup.
    I did get the new motor and tested the brake to insure
    it can hold the bucket up.

    heading back to...
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    Project Re: More Mule then Rover?

    https://www.youtube.com/watch?v=_qXii29on2g
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    Project Re: More Mule then Rover?

    I was able to test the dumping drive setup.
    the speed is manageable but, even with a 1" shaft because of
    the amount it's unsupported on each end it acts like a leaf spring(crap).

    7425
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    Project Re: More Mule then Rover?

    to set the height of the blade I had these welded on($25.00 sweet!)
    for small casters and a orange plow marker flag(should show up on camera).

    7424

    I'm going to one more shaft, 12 teeth and 45...
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    Project Re: More Mule then Rover?

    hope to test the dumping setup this week(waiting on motor with brake)

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    Project Re: More Mule then Rover?

    Not sure about the plan A for dumping.

    the gear motor I plan to use has a 180rpm output, and the sprocket on the buckets
    only turns 90deg. to make it at least reasonable if things go sideways, I...
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    Project Re: More Mule then Rover?

    with all the effort & costs that went into making the lifting frame, I'm going
    to install a second prox switch on each end of travel, that shuts down drive
    and turns on the brake.

    or the...
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    Project Re: More Mule then Rover?

    smooth!


    https://youtu.be/ngi4qHbGw-M
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    Project Re: More Mule then Rover?

    jwatte, nothing gives that warm&fuzzy feeling like good visibility.

    While I couldn't use the ballscrews I have available for the lifting of the bucket(too slow, small pitch)
    they may work out...
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    Project Re: More Mule then Rover?

    baby steps.

    got the prox switches for the lift installed.

    7415

    also moved the bucket out 2" to give me room to mount the dump
    motor under the bucket support arm(so it doesn't block camera...
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    Project Re: More Mule then Rover?

    the lift works as envisioned, 5 sec. for full lift height, tested lifting 290lb, it lifted
    it with no measurable slow down.(Sweet!) the braking system worked perfect also.

    everything very...
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