Built a new beetle, Rancid 2. 1000rpm gearmotors, 60mm wheels, new tiny 12V pack and the trusty sabertooth. Just need an event now lol.
http://i174.photobucket.com/albums/w...pst6msrpgu.jpg
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Built a new beetle, Rancid 2. 1000rpm gearmotors, 60mm wheels, new tiny 12V pack and the trusty sabertooth. Just need an event now lol.
http://i174.photobucket.com/albums/w...pst6msrpgu.jpg
Next beetle even is Sunday the 10th of May at the Court Leet Hungry Horse, 174 Worcester Road, B61 7AY Bromsgrove
https://www.facebook.com/events/437861699712893/
all fear the box..... how does it drive ?
I got an email from Kinematic Events saying they had no interest from the other beetle builders so we're only doing pay to drive at Bromsgrove.
It drives really nice with the esc sensitivity turned down and the smaller wheels. Bought some proper motor brackets so it tracks a lot better. Also tried copying unmakerbot's driver style n it's spot on.
Hey just so you know, a few more beetles have signed up so we can have a fun competition. So come on down. ;-)
Oh cool will wander down and bring robot :)
This sounds totally daft but it's only just dawned on me, when you swap your electrics into a new robot leave everything plugged in! That way you just supply power and motor cables and it takes ten seconds to get it running!
http://i174.photobucket.com/albums/w...pse4cpov9x.jpg
Right well before Sunday thought I'd put up a picture and a video. Been having a drive of robot properly and discovered an epic fail. The robot is made from a maplin project box a mate was chucking out and it looked about right. Upon building my stuff into it and cutting wheel slots I discovered the width was too thin to get both motors and gearboxes end to end so I ended up having to stagger them a la Little Hitter et al. The knock on effect of this was that the battery then didn't fit properly, and I've had to put a round head bolt under the back corner to sort of prop the robot up. The battery over the bolt makes it dig in and so if it accelerates hard it pulls to one side. Accellerating gradually = no problem.
Am a bit gutted. And it's not invert-able. Which is just fab. Anyway, I actually haven't set this one on fire so am gonna see if there are any spinners about on Sunday to chuck it in with. If the concept of an ally can with a lid works I'm gonna get on to the fabrication place to make me a proper chassis with lid and move my stuff into that. I've also discovered that the 1000rpm gear motor shafts are pretty fragile and have bent a couple, dunno if anyone else has the same problem? Below I stuck up a picture of the insides.
http://i174.photobucket.com/albums/w...ps1txxd46r.jpg
I'm not really good at serious robots so built this over the last week or so and am gonna take it along on Sunday. :) I seem to do better when I build daft stuff. Say hello to The Roses Tin of Doom
http://i174.photobucket.com/albums/w...ps0ld8uls3.jpg
http://i174.photobucket.com/albums/w...psu5uxssrd.jpg
I haven't had any issues with shafts bending, although the most force Ash has felt is from it's own weapon. Foam tyres on Fingertech hubs would probably help with reducing force applied to the shafts if it continues to be a problem.
My favourite adversary biscuit tins :D
Lol :)
Yo Dave. Neat project box beetle. My first one was similar to that, except it used a plastic one.
You're wise to test it with spinners but there will be a difference between rubbishy cast aluminum that will almost certainly crack and legit flat grade box or plate alu.
Here is an idea you may like... Grab some large thick walled alu rectangular box section (you can get it in near perfect short lengths for very little money) and then use some ranglebox to attach a top and lid to it? could be right up your ally (alu?)
I got a 50mm length of 6" by 2" 3mm wall 6082 extrusion for about £3. Maybes some food for thought on boxbot.
That sounds like a good idea. Going to have another go at boxbot lol.
Well the roses tin got eaten literally by Alex's very clever spinner. If you haven't seen that you need to have a look to make sure your prepared (mmm wheels nom nom nom).
Cnc'd up some new bits for the next beetle (on the back step). Trying to get to the next couple of beetle events but struggling with them being so far. Need to get some wheels ASAP. Now have a collection of small nimh's depending on robot shape and have made an extremely simple wiring loom that incorporates the speedo, receiver and link.
Frantically desperate to move over to botbitz, dx6i and a lipo. Just looking at whether I can get the dx6i to mix for me.
http://i174.photobucket.com/albums/w...pshg2gzgf5.jpg
The DX6i has 3 built in mixing options, we use V-Tail it on all our robots, works perfectly.
And yes... tasty tasty wheels... nom-nom-nom
Lol :) Thanks Alex, will get one ordered. They look like a good investment.
CNC - Cut Neatly and Carefully? ;)Quote:
Originally Posted by daveimi
Pretty much :) Cardboard aided design etc. lol
Started another beetle. Heavy is going well, hope to be driving it in the next month and then taking it on the winter tour events if they will have me. Pictures of it are boring so haven't bothered so far. Pic of another beetle below.
http://i174.photobucket.com/albums/w...psxqnkiazz.jpg
I love it
I think the most creative and innovative aspect of using a biscuit tin as a robot chassis is the fact you have to eat the biscuits first :)
Getting through a tin of roses and then a tin of biscuits has been an absolutely fantastic bonus :)
Have been planning a wooden heavy for a while as I've been obsessed with the idea for about 12 months. Was inspired by Rory's heavy to get on and finish my own. In true time honoured style it's made of found parts and donated bits and pieces. My idea is for a double ended thwack bot. This may be completely useless but at least it keeps up with my track record of being yet to win a fight despite regularly entering competitions for the last three years. :) Main central beam with a wheel pod each side. There will be wheel guards and some sort of top cover n hammery axxy thing at each end. It may get mangled but it's sooooo easy to build and work with I can't not build it. After a morning I'm at the stage you see below, and reckon I can maybe finish before the summer is out! Another rubbish skipdiving robot coming near you soon!!!
http://i174.photobucket.com/albums/w...psisxbucrb.jpg
http://i174.photobucket.com/albums/w...psdiy9ayhp.jpg
Battering ram is born.
What happened to that steel chassis you had made up for a heavyweight?
It's dumped in a corner of the back room awaiting some sort of exciting drive train but I don't anyone to approach to make me up some gearboxes. I'm not very good at fabrication.
Put those wheel chair motors in the steel chassis
I'm sure we can design you some that can be laser cut from say 6mm steel, then you'd need some aluminium spacers and long bolts to hold the pair of plates apart. Couple of besrings/bushes with flanges to support the shafts then all you need is someone to turn you some shafts, I'm sure you would find a roboteer happy to do that for you.Quote:
Originally Posted by daveimi
We just need to know what motors want to use then can design some gearboxes to suit.
Yo. I could probably sort you out with some gearbox plates/similar. Can do milling and turning so shafts and bearing fits etc are not a problem.
Thank you for all the replies, I realised that the fabrication place had done a really nice job on the heavy shell and didn't want to ruin it with cheap wheel chair motors lol. I've been looking to make some gearboxes based around a two stage reduction with 200mm wheels and something like ampflows. Whilst I sorted it all out and got it made somehow thought I'd have a go with the daft wooden robot lol.
Interesting choice to go with wood. It's certainly got the advantages of lightness, cheapness and being very easy to work with.
Question is, what to call it? It's a shame Splinter is already taken!
Yeah, I'm gradually getting the serious one sorted as the months go by but really wanted a go at fighting a heavy so thought I'd have a go. That and the fact I've never really seen a wooden heavy kicking about lol.
Quick update, spent some time today getting the weird chassis solid and together. Is fairly strong and have also drilled ready for wheelchair motors. Want to weigh it before I do anything else. There will be a corresponding roof and beefy wheel guards with a hammery thing on each end hopefully. Plan is to finish over the next few weeks.
http://i174.photobucket.com/albums/w...psgbvebhbs.jpg
Did some more to the motorise pallet lol. It's going in weird directions but going somewhere gradually none-the-less. Need a speedo! or two lol
http://i174.photobucket.com/albums/w...pso0enk0c5.jpg
Well really want to get to some events so got a beetle going again. Still have various motorized food tins but given they get shredded by anything spinny I re-visited the box. Voila. One hour later and its driving great. Bit of adhesive, tape and some adamantium extrusion and she's ready to go. My naff building ways know no bounds. Taking it to Wolverhampton on the 30th Aug to see if there's any spinners. Want to see if it stands up to them.
http://i174.photobucket.com/albums/w...pshmkjqyow.jpg
I'll be there with two (possibly 3) spinners including the new Inertia which is looking for something to test against :)
Lol I've opened a tin of worms now...
Keep meaning to ask if I'm alright to order a load of your beetle wheels? Like say five pairs or so?
I'll be taking at least 2 spinners as well.