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Type: Posts; User: Deathly Hallows

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    Hello world! I'm back. Been a busy time at work...

    Hello world! I'm back. Been a busy time at work and it's not going together any easier but I'm persevering with the project. Why does it always seem that I'm trying to work on a project when it's...
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    I understand and agree the greater the mass and...

    I understand and agree the greater the mass and further from the pivot the greater the impact.

    Found a nice animated gif here:
    https://en.m.wikipedia.org/wiki/File:Moment_of_inertia_examples.gif...
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    But the arm mass is part of the calculation not...

    But the arm mass is part of the calculation not just the mass on the end. Though certainly the force generated by the same mass towards the point of pivot is less than that towards the end of the...
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    Not that heavy. 133g The arm will have more...

    Not that heavy. 133g

    The arm will have more mass. This is the sting!

    8409
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    So much great feedback!!! I have a MY1016...

    So much great feedback!!!

    I have a MY1016 motor
    The shaft outside the casing is a little over an inch long, half inch reverse threaded, but also it's got a flat edge the length of the thread.
    I...
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    Thanks - your right. The switch speed could be...

    Thanks - your right. The switch speed could be too high, though I could program a pause.

    I'm going to see how it can go together next weekend. The motor controller is not the typical unit and...
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    Looks great. Definitely want to attend the next...

    Looks great. Definitely want to attend the next one.i have a working beetle untested in battle and 80% of an ant. Which I could got working if I had a goal.
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    I have made some small purchases. Banebots...

    I have made some small purchases.

    Banebots wheels and hubs arrived
    Some steel bar for the arm
    A steel rod for the axle for the axe
    Also a motor controller that should handle the amps needed for...
  9. May I ask how you sure up the axe? Does it...

    May I ask how you sure up the axe? Does it detect an end state or is the fully manually controlled?
    I'm working on an axe got and how to control the weapon is a big question for me. Do I simply...
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    Been away on business trip last week....

    Been away on business trip last week. Unfortunately looks like I'll be away a lot over the next few months. It's going to be hard to find blocks of time so this will be a slow build. I have a...
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    Deathly Hallows - FW - No-IP-Rocs

    So after the learning experience of Alligrator I have a new idea.

    Basic idea is to repurpose an MY1016 to power an axe/hammer.
    I'll reuse the electronics for controls too.

    New brushed geared...
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    Back from my holidays and back to the drawing...

    Back from my holidays and back to the drawing board and time for some reflection.

    Lessons:
    The scooter motors are too heavy for anything but a push in this class (as I was advised)
    Got the...
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    Today is not a good day :( Alligrater was...

    Today is not a good day :(

    Alligrater was fully assembled and being tested when the chain came off yet again! Repeated hard testing on the bench seems not to be the same as driving it on the...
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    Thanks Jamie - I really appreciate all the...

    Thanks Jamie - I really appreciate all the support and encouragement from everyone. Been a tough few days felt like giving in a few times and starting again.

    But finally it seems I have it...
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    Thanks for the input. I am such an amateur, I'd...

    Thanks for the input. I am such an amateur, I'd originally considered having the drives mounted so they could slide back and forth to take up tension before fixing and this would have been a lot...
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    Disaster! Still throwing the chain. I am...

    Disaster!

    Still throwing the chain. I am getting desperate now.
    The chain is so tight I struggle to fit it, yet once on it flexes enough to derail.
    Clearly after testing on the stand and it...
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    I think it's fixed. Tests at full speed on both...

    I think it's fixed. Tests at full speed on both drives, and rotations. All tests on the stand but I am fairly confident it's fixed.

    Here's a video of it at low speeds. Didn't want to be...
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    I think I have cracked it. - Alignment. There...

    I think I have cracked it. - Alignment.

    There was a wobble in the wheels, where the sprocket was bolted to a spacer onto the hub. Also the drive sprocket and the wheel sprocket were not aligned...
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    Having a total nightmare! No matter what I try...

    Having a total nightmare!

    No matter what I try with the tensioner the chain is jumping. Tried shortening chain and it would be too short.

    Tried the tensioner lifting from below today. Same...
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    Today I stripped it right back. I cut a 12mm...

    Today I stripped it right back.
    I cut a 12mm strip off the front and sides leaving some pieces as a ledge for the HDPE armour.
    Widened the wheel slots a bit,not much weight saved there.
    Also...
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    Fitted some tensioners. I had ordered some track...

    Fitted some tensioners. I had ordered some track bike tensioners in case.

    8196

    These worked really well! So I thought I'd give it fill power on the stand.
    WhirrrrrrrrrrrrrrrrrRRRRRR
    CLUNK!...
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    Found first issue. A connection in the XT90 kill...

    Found first issue. A connection in the XT90 kill switch was not sound so could only carry so much power before it maxed out. On the ground the motors pulled more current so they stalled.

    There...
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    It gets hot when running. Actually smoked. It's...

    It gets hot when running. Actually smoked.
    It's a anti-spark XT90 with awg10 wire across the pins.

    Yes I have multimeter
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    I am not 100% sure. The power is down. The...

    I am not 100% sure.

    The power is down.
    The Feathertwo is making a tone when operating the motors (I think sound is coming from the ESC)
    It moves forward and back but not turning when on the...
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    Thanks very much. I added some titanium plate...

    Thanks very much.

    I added some titanium plate to the front instead of that bit cardboard ;). It weights in at 13.02kg so once the ramp is fitted it's going to be a bit over but lots of...
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