Yeah it's not Hardox, but is a good wear plate recommended and used by Mario. And now me and Ellis.
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Yeah it's not Hardox, but is a good wear plate recommended and used by Mario. And now me and Ellis.
Really puts it into perspective how much better this could be than last year when you see the bar comparison, definitely one to watch
Ok then
Cut out the base today, which is hardox.
http://i.imgur.com/mzJHz5c.jpg
I hope I can keep up the pace on this build :)
It looks TINY how big is the body?
Body is 340x270
Did some work today. Milled out the pockets for the motor faceplates to sit in. 2 motors mounted.
http://i.imgur.com/RQ93Zfw.jpg
Here is part of the finger joint and motor pocket
http://i.imgur.com/6vUqUXR.jpg
Also finished drilling and tapping out the pulley.
http://i.imgur.com/JasLfmj.jpg
http://i.imgur.com/RMRifbq.jpg
Wouldn't be a proper post without a Pretend-O-Bot™
http://i.imgur.com/WIkf6TQ.jpg
Also Ellis made a GIF :)
http://i.imgur.com/gRwwKiJ.gif
Nice gif! But where's Nicholas Cage in it?
I finished off the pockets for the motors to sit in. Not the most legit work ever but it functions :)
http://i.imgur.com/xGMXd9k.jpg
Put everything back together, got the motors in position. They fit quite snugly witch is nice. Frame looks suitably chunky.
http://i.imgur.com/vO2bfzJ.jpg
And with the wheels
http://i.imgur.com/xMJKLtl.jpg
And here is working out some positions for the mounting of stuff like the weapon esc, battery mounts/padding and that.
http://i.imgur.com/ZJ17jSy.jpg
It seems to be coming along quite nicely.
God I hope I don't have to fight this
Very nice work :).
What are the slots on the inside of the back panel for?
The allow me to run another set of bulkheads along the inside of the frame. I have an alu set but they may prove too heavy. I've got hdpe in the same thickness so if there is enough weight for those I'll stick them in. They will have a use regardless even if its just to give something to mount components too.
Oh and I started on the weapon gearbox this afternoon. This is mk4. By far the most solid and hardcore ;)
http://i.imgur.com/yIqLall.jpg
http://i.imgur.com/c6S060Z.jpg
http://i.imgur.com/Bq58guS.jpg
http://i.imgur.com/p0vRKI3.jpg
http://i.imgur.com/GRoNodv.jpg
Hope nobody minds the picturespam too much.
Looking great, can't wait to see it! Picturespam is good, more interesting than just text :P. Also like the 'Do not lick' sign on the brushless ESC!
That sticker does has a use... that bot is looking finger licking good so far. Even if most bots that come across it will have it disagreeing with them if they (try to) take a bite.
You will definitely be in with a shout at the champs with this :P
Looks great, what size bearings you using for the blade and gearbox shaft?
Cheers guys I appreciate the comments :).
Bar has got 25mm bore roller bearings pressed into the pulley, if these turn out to be too weak I have bushings in the same size so i can transplant them. Gearbox has a 10mm shaft.
Yo,
Got my belts and the steel pulley in the post today. Shame I've got to write about machining techniques for college today instead of going out to the shed and doing the practical :p
http://i.imgur.com/ey9izIu.jpg
http://i.imgur.com/4lrTOai.jpg
Pulley has a 10mm bore and a keyway. The boss is way to flimsy now so I'll just chop it off.
All the stuff feels nice and strong, but I have plenty spare belts (I hope) 15mm wide HTD5 If you're interested.
Lookin good
Bit more work done, gearbox and things are getting bolted together. Got a fair few holes still to put in the base and figure out where the everything can go. Small robot is small, but heavy robot is heavy :/
http://i.imgur.com/2WLxvuT.jpg
http://i.imgur.com/Hmi79fj.jpg
The gap on the right hand finger joint is because I haven't got round to tapping the holes yet.
I really need to work out what I'm going to do with the base. I don't particularity want to leave it all rusty etc. May attack it with sandpaper then polish or something.
Also ground clearance is better than I thought. Still less than I would like but that's one worry gone. Making the thing function is now the main goal.
If you desperately want to see stupid amounts of picspam and dodgy ghetto machining, http://bodgeitandhope.blogspot.co.uk/
Cheers.
Ideally you would sandblast the base and then paint/laquer it in some way but I am sure an orbital sander with some high grade paper on it would give a similar result.
Looking good though, simple design and it should be quite robust. Those GR01's will be locked down solid.
It looks really good but i'd actually be worried about the Gimsons been held in too sturdy as i believe some builders have had problems with shocks going straight into the gearbox as there's little/no flex to absorb some of the impact
Yeah I guess so. If they break, I'll deal with it then and there. Nothing much can really be done about it now.
Thanks for the suggestions Alex, in the end I just hit it with a sanding block and some elbow grease. Still a little ways to go.
http://i.imgur.com/o7KPOAm.jpg
Also gearbox is semi together.
http://i.imgur.com/81M62DX.jpg
you can see gear and pulley related things happening here.
https://www.youtube.com/watch?v=CnK0lmS8j3U
Got the gears to mesh fairly well. Gave it a blast on small 3s. I'm really pleased that this has somehow worked.
Harry, why did you choose an inrunner rather than an outrunner?
Surely an outrunner would have would have more torque
Because high speed. This meant I could really gear it down, I have like a 10:1 or so reduction in this so the end speed is reasonable (still too fast imo) and the weapon itself has plenty of torque which should give me respectable spin up. Inrunner also is more enclosed so I don't have to think so much about crap getting into the motor so much. Not that this is much of a problem?
turn the brake of the esc before you do it any damage… looking good though! looking forward to a spinup test
Did some more work, got it driving. Loving the TZ85. Just got to play around with the mixer to get it to behave. Speed isn't too dreadful either.
https://www.youtube.com/watch?v=mojz...ature=youtu.be
http://i.imgur.com/JBftKBW.jpg
Weight is looking okay too.
looking good... got enough weight for something to protect the wheels then? similar to this;
http://img4.wikia.nocookie.net/__cb2...72/Hazard5.jpg
I want to. Got some ti sheet that would do nice. Not sure how to make sure the hinges are manly enough though.
And so they don't get hit up and get hit by the bar :P. Looking great Haz, looking forward to seeing it!
^ That too. And Cheers.
Hi Harry,
When I was running a Hazard style bot, I developed an alternative hinge that worked really well:
Attachment 4422
Its just a row of bolts along the edge of the armour that have a gap under the heads. by adjusting the gap under the heads, you can get the right amount of motion so that the armour rides over the floor seams but opponents can't get underneath. you will also need to make the mounting holes in the armour a bit over-sized.
In my case, two M8 cap head screws at either end of the armour plate worked for years.
Sweet idea Nick. I have been reading that 350 odd page thread of yours lately. Great stuff. I'll see what I can do wedge wise. I got a few 12.9 m8 capheads so they should hold.
You can see what I did on the very first photo on page one :).
Just rewatched the melee from last year. With any luck Binky wont be able to peel back the front blade of this version like tin foil. It will be a proper fight! We aught to have an all spinner Annihilator! It would be chaos!
Never looks like I'm making much progress (side effect of Pretend-O-Boting)
I sneakily machined the main weapon shaft at college the other day. I mean what else am I supposed to be doing, work or something? Idk. Got it to within 0.01 of 25mm so it should be fine. Fits the bearings nice. Also mounted the weapon gearbox and motor now.
Don't worry I will be making sure that the wiring is as far away from the spinning everything as possible. I'll hold off that until I have found a sensible wiring loom that makes sense and isn't too spaghetti.
http://i.imgur.com/OoUbKjK.jpg
Coming along nicely Haz. Robots always look better on grass too.
Where have you decided on placing the link?
If you look you can see the shaft is hollow. Link will be above the bar Little spinner style. I'll be milling out a protective case/box for it though. Its the safest way to do it, although not the most practical for the robot. And thank you :)
Hi All,
Did some more on the battery mounting, added a bracket and some foam to protect it from shocks.
http://i.imgur.com/yXXZ3zZ.jpg
Also got the lid cut out and the hole for the pulley/bar to go through cut. The pulley is sitting about 4mm lower than it would normally because I just stuck it on there to show how it fitted through.
http://i.imgur.com/qZWYl6s.jpg
Bar got a coat of black paint, but the edges are kept bare, thanks to daveimi (I think) for the suggestion.
http://i.imgur.com/vg8Phny.jpg
Still got lots to do. Hope it comes together ok. Cheers.