Project "Blacksmith

[maddox10]

Anglegrind the mushroomed pin flat, that should help driving it out. Infortunatly, that makes reuse of that pin inpossible.

[Maxamuslead]

So realistically if i get off my arse Blacksmith (seriously considering of nameing it bodgesmith) should be ready tomorrow.

Got a 3d printed jig allowing for me to cut the alu closer to my required spec so that allowed me to mount the front armour plate much quicker and easier.

Only items left are createing and mounting the side, top and angled front HDPE which should be easy enough.



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Just got three question.

Weapon retaining bar, is a screwdriver good enough? To be honest I am planning to get a m5x150 bolt and weld a handle on it but having a idea of a backup is nice.

What type of foam packing do people use round their batteries to help them not move?

haven't driven in anger just yet, but if the Center of mass is too far back, would adding a wheel bar type thing to force the nose down be a useful thing ??

[Ocracoke]

Weapon retaining bar, is a screwdriver good enough? To be honest I am planning to get a m5x150 bolt and weld a handle on it but having a idea of a backup is nice.

I've definitely seen meaty screwdrivers being used in the Beetleweight category to stop spinners. So long as it is as thick as a M5 bolt as you are planning, I can't see any reason why this wouldn't work.

What type of foam packing do people use round their batteries to help them not move?

I use Sainsbury shopping bags in mine plus the batteries are in a LiPo bag anyway. Works fine for my application.

haven't driven in anger just yet, but if the Center of mass is too far back, would adding a wheel bar type thing to force the nose down be a useful thing ??

Try driving it around in anger first but personally, I think you'll be OK as is.

[Maxamuslead]

Well i failed to get it done yesterday, Im going to blame the weather....

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Just make 4 more alu mount blocks and cut out some HDPE and bobs your uncle.

[Ocracoke]

Out of curiosity, where did you get the threaded bar from?

[Maxamuslead]

made it myself, pain the utter arse so time consuming but works well

[Maxamuslead]

So I got round do some more tests

working well, hammer looks like it should hit preatty hard (although got a new goal for future robots heheh)

Drive as well as I thought it would. So that will require some fixing (a wheelly bar style thing)

But if you may of notices (espicelly with the hammer test) it is cutting out. This is due to the removelable link.

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I must be drawing too much amps that or they are el-cheapo knockoff but would be making a duel connecter be the best plan?


Side note would this satisfy the Cradle requirement?

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If not i shall work on something better.

Lastly a quick photo of the battery.
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Anyway planning which events I can get too.

[qbnut]

That looks at first glance like arcing - is the XT60 a snug fit? The plus in the male side can be widened with a precision screwdriver (with power off of course!) which would make the pin connection tighter. I've had to do that a few times on the connectors in Battleaxe which are XT60, it's a very similar setup but doesn't draw excessive current. What fuse rating are you using?

EDIT: I would probably replace that connector pair altogether!

[Maxamuslead]

Damn was gonna do it energized while in a earthed steel container fuil of salt water



100a fuse, it was a snug fit looks like the metal inside the connecter (brass?) melted down into the connector resulting a lose connection.

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Old left new right


I shall make a new Link and try again tomorrow maybe.

[RogueTwoRobots]

You will get a bit of arcing on a link when you plug it in anyway (unless you have a 'pre-charge' link) but I would be surprised if that alone would be enough to reduce the connector to a point where it is not making good contact. Possibly just a duff connector, so worth making a new one to try.

Re: the cradle, it looks fine. As long as it prevents the robot's wheels from touching the ground and it is stable (i.e. give the robot a shake and it doesn't fall off) then it's good.

[Maxamuslead]

Well things where looking good.
Link modifications work great and does not shake loose both on old and new links.

Axe has some power, bent a 8mm? (didnt measure it) mild steel, old lenght of cutter bar
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But now the bad bit. I think i have damaged the weapon motor as it does not sound heathly

Can it be saved or should just invest in a new one (+ plus a spare)

[Ocracoke]

Does sound horribly bearing related. I guess there isn't a gearbox attached to this one?

I'd be inclined to leave it for the moment, get to an event and then see how well it is doing during/afterwards, 8mm steel is fairly beefy stuff, I doubt there'll be much with that sort of armour running at the moment, especially up on top in a world of spinners.

[maddox10]

Sounds like a dead bearing or a winding coming out of the slots.

Both can be repaired tough.

[Maxamuslead]

Ok, better them i feared. I shall take it apart this weekend and have a look at the damage

[Roboteernat]

It could be a magnet slipped from the case thats brushing up against a winding internally.