dave only takes a little bit of your dribble and your speedos wrecked, shud be in a case! :)
Printable View
dave only takes a little bit of your dribble and your speedos wrecked, shud be in a case! :)
my dribble or westons dribble? Mines non conductive so its all good... Ill just leave the armor on in the pits..
Did think of putting a cover on it... but a) carnt be bothered b) there's no real point.
I think your going to have a tough battle with Beauty 2 and Toonimator.
Yeah I was impressed at the damage inflicted on your arena walls by Toonimator last year. I don't know if it was because the arena walls couldn't go anywhere (whereas a 13.6kg opponent will remove some of the sting of the weapon by being thrown away) but it's one I'm keeping my eye on.
360 turns quite nicely so could probably avoid taking damage to the more vulnerable parts of the robot, but then its unpredictability when it's gyro-dancing could see it accidentally hit Toonimator's disc with the rear of the robot. Having said that, with the magnet there will be less of the gyro-dancing so we could get a nice disc-on-disc moment. Definitely one to get on video - go Dave :)
toonimater what robots that?
the old beauty that the toon guys have? or is that stagefright
bin while since my last event im out the loop lol
That's Stagefright. The Toonimator is a spinner with one of those hardox discs, powered by a car fan motor (I think). T'was built by El Presidente and was at the tag champs last year (and took aforementioned chunks out of the arena) but had problems with the failsafes so it didn't run.
Got this pic of it from Barnsley:
http://i31.photobucket.com/albums/c367/ ... CN4888.jpg
I just love how the front bit is made out of wood. Not the most common of spinner structure materials.
Sorry Dave, you can have your thread back now :)
got a few more parts now for my new one.. ordered bearings, just gota get around to ordering belts and pulleys then thats pretty much everything.
Going to keep this one under the bench for full combat events as id rather enter 360 (even though this one will probably be better)- ill just keep it for whiteboards / when 360 breaks lol
http://i685.photobucket.com/albums/v...s/13b83324.jpg
Final cad-
Just waiting for the pulleys to turn up from technobots then work can start :)
http://i685.photobucket.com/albums/v...s/8f9d7b95.jpg
thats looking nice davindra
u folding the ti to go up at the back?
u leaving 'calum is awsome' on the ti or u gonna remove it lol
Not been on here much recently, not done anything on robots in months either, but me and ed did a bit yesterday, base should be finished soon, axles are done, just the wheels to machine, sort out the position of the motors and bearing blocks to make then i should have a rolling chassis.
http://i685.photobucket.com/albums/v...s/b4e67450.jpg
good to see my ti getting used (Y) looking good and i wana 1 on 1 lol
Calum- you'd just get embarrassed like normal mate.
A bit more done today ;
Wheel blanks turned down to the correct width then dished out on the cnc;
http://i685.photobucket.com/albums/v...s/9d1898e1.jpg
holes drilled in them to loose weight...and mostly to look cool;
http://i685.photobucket.com/albums/v...s/6249cf4e.jpg
All put together to give an idea of how its going;
http://i685.photobucket.com/albums/v...s/bdaa2c39.jpg
just need to get the motor mounts and bearing blocks done then it should be rolling :)
current weight with everything should be 7.2kg... plenty of weight for armor and maybe a detachable weapon? :)
Also i need to sort out some rubber coating for the wheels... Ive looked into doing them myself but it means making moulds and getting in a mess.. Other quote i had was for £20 a wheel, £25 with chevrons in the rubber...
Anyone know of anywhere cheaper? Or even some good rubber tube with a 70mm ID i could slide over and bond to the aluminum?
Looks really good! Cant wait to see first vid of it driving.
Nice work Dave, as per usual. Will be good to see it when it's up and running.
About the wheels; I think the Big Nipper guys have a bonded rubber-on-ali wheel setup for their featherweights? I was going to say they used rubber radiator hose but I think that was an older solution that wore down too quickly. The wheels they have these days look to be of similar diameter so they may be able to help you out.
If you don't find anything cheaper, and can afford it, chevrons for the win 8)
i imagine you already know dave it's called vulcanising (no idea if i spelt that right lol), but i had a few done a couple of years back and they are quite expensive for what it is
craig danby had those tanto wheels done, he gave me the contact info for the guys and it came back again quite high and pricey
might be worth asking him???
looking very good btw :)
I know what its called Alex, i just didn't know how to spell it either lol...
Ive got a meeting with these guys on Thursday ;
http://www.bhleakerubber.co.uk/
There going to see what they can do for me. I think the wheels will end up with a tyre similar to the black one on the homepage of there website- as i think its quite cool :) Also im going to see what grip levels they provide, They told me a nat50-60mix would be good, But i dont have any idea what that means so im going to have a look in person before i hand over the cash :)
are you gonna get prices on different types, like that black one and normal smooth/flat???
just use a hot glue gun to make rubber treads, its gonna loose against mine anyway!
Nice wheels Dave i want some
Cheers Shane.
Dropped the wheels of at the place today (didn't realize its right next to were i work at cadburys) and got the invoice.. its going to be about £25 a wheel with the chevrons... a bit pricey but could be worse. They gave me a sample of the rubber there coating the wheels in, Seems nice and grippy but not to soft, probably softer then blue wheels though.
And i went for the chevron pattern, Would of been £20 a wheel without the V shape cut into them.
Where do you get the drive motors from for 360?
thanks
Craig
Hi craig,
The motors are Bosch 35w, there from a jaguar my brother had, If you look on eBay for jaguar car seat motor or assembly you'll find them. I think there used in some rover models also. They tend to go for around £15 each or £25 for the whole lower seat assembly.
The last time I ran 360 I ran it on 24v which shredded the gears by the end of the event, I'm going to look into getting some brass gears machined for them though. Was going to get a quote and order a bulk load and sell them if your interested?
Try eBay item number; 140436574824
Or search range rover seat motor, there's a few for sale for £10 buy it now with free postage :)
Many thanks Dave,
I have just bought a seat frame ref the number you advised, it has 3 motors 2 look like
they will do for the drive and the third looks useful for the head actuator.
Many thanks again
Craig :D
Small update;
picked up my wheels, real grippy, pleased with them.
http://i685.photobucket.com/albums/v...s/0e83cd76.jpg
http://i685.photobucket.com/albums/v...s/faf1b4da.jpg
Also got my sidewinder back from repair - rick did an awesome job for a good price :)
Nice seats Dave,a bit clean though :)
lol got a new car too :) astra 2.2 bertone, and yeah its a bit clean for me eh
picture of them next to the bot :) ;
http://i685.photobucket.com/albums/v...s/61b7763e.jpg
Wheels mounted and motors mounted, thanks to ed for the bearing blocks and ALK engineering for the motor mounts;
http://i685.photobucket.com/albums/v...s/88b56618.jpg
decided i can still squeeze in the bar spinner... this image shows were all the spinner gear will go, fits in with literally no room to spare. Thats not the motor ill be using in the image, its just to give an idea of how compact this robot will be... there will be another lipo sat in the back also (as per the first picture), drive to the bar will be from a single stage spur gear reduction at around 6:1 on a stub axle assembly that bolts to the lid of the robot... removable for when i want to run as just a pusher...not 100% sure how to do it yet, might use 8mm wide MOD2 spurs;
http://i685.photobucket.com/albums/v...s/a07103f9.jpg
The spinning bars hopefully getting machined by Graeme lumb next weekend from 13mm titanium.
Should be able to test drive it soon, just need to cut down the motor drive shafts and wire it up.
looks well good :proud:
you might have already said some other place but whats the base material and thickness and same for drive axles??
nice work :)
Base is 5mm titanium, axles are 1/2 stepping down to 10mm for the bearings with a 4mm keyway.
looks awesome :) what brushless motor are you using?
Same as 360- Scorpion HK4025-890KV running on 6s. from what ive seen from data feedback from 360s performance they can peak at over 4KW of power... more then enough for what i need.
So... This one's going to go flying out the arena as well?
That's one well built robot!
Hopefully not Ceri.
It has a beefy magnet in there to keep it on the floor (the only arena i can run it with the spinner on is the robochallenge arena which has a steel floor)
Also the disc will only run against robots i know it can damage... theres no point leaving it on against hardox box's etc.
smart idea with the magbet hope it works
How well do you think the lipo's will cope being so close to the motors as they heat up? The battery's themselves will also generate some heat. I can imagine it getting quite toastie in there when the shell is in place, specially with 6wd, grippy tires and the extra pull from the magnets. Is there any cooling planned for the bot?Quote:
The dewalts WILL heat up to very high temperatures ~ 70 - 80 degrees and more
Well the heat problem has an easy solution -
Put an aerofoil on the spinning blade to throw all the hot air up vertically then heat sink the spinner & anything else you can.
The added bonus is the aerofoil should create a down force, pushing the machine to the floor. Two added bonuses & not a single extra gram spent.
What I'd like to know is: How do you plan to lift it from the arena floor after a match when there's an extremely powerful magnet holding it to the floor?
looking nice
call it davebot
and i'd think the only way would be to use a crobar or something lol
you could use an electromagnet
I like your design concept of having the option of a decent pusher as well. Defo a winning concept! Its looking good, be interested to see what you come up with to support and drive the bar in that compact space.