How Could I Improve...

[andrewj]

Armory

Make it a bit taller and wider. A rectangle is a 2D shape€¦

Nice to see some variation in the motor and battery department, but I€™m not that familiar with that set-up. Maybe someone else can help, but I would personally change to Magmotors or Lynch motors€¦ 1.4hp for 10kgs of motors doesn€™t look like a good power to weight ratio to me. Correct me if I€™m wrong but I believe the batteries you mention are Hawker Odyssey, which are SLA. I€™d look for some much lighter NiCad or NiMH.

The clearance is very poor. 1mm is bad, but 0.01 of a millimetre? That is, I€™m afraid, very bad. But as you are new, I€™ll let you off. :wink: High ground clearance is not a bad thing to have by any means, in fact, it has many positives. If you are concerned though, add some skirts. But I would times your ground clearance by 1000, personally. It takes something just a fraction of a millimetre to get under your current clearance and you will be beached on it. Wheels off the floor, gone.

5mm Titanium is pretty thin, add a bit more to it or €œlaminate€ it with polycarbonate or HDPE. Or if you€™re not bothered about Craig€™s call for variation, then use Hardox, which is significantly lighter, but also stronger. For the spike you€™ll need to say what its made of, what size ram powers it, what gas you are using, how much gas is stored, what pressure you are running at etc€¦

I€™m also not familiar with the term €œMag Snapper€€¦ could you expand on this, please?

Gabriel II

I€™m not sure on the existence of C40-300 Magmotors. I€™m probably wrong but I think you mean C40-500. The armour is a little weak, but fine. Give a few sizes for that hydraulic ram, is possible. Otherwise, a very nice robot. You€™ve been here, what€¦ a month? And you can already produce stats better than some people who have been here for a few years. Good going, Joey.

I think I meant C40-500, I have a bit of a weak spot for 3 and 5 and I guess I could add an extra couple of millimetres to the armour - rams arent something I know a great deal about, but Ill look at what others are using and possibly come up with something.

Thanks for the compliment I dont know, though, whether its a reflection of my knowledge and research or me being incredibly sad...

[swanaldo]

no joey you were right the first time. there is the mag c40 300. envy and thor runs them. not saying they dont do the 500 but i have never heard of them

[swanaldo]

a couple of other pointers for you. you will only need 3 ni-cad packs saving 2kg. i would go with full pressure with a 70mm hydraulic ram cut down to suit robot with 3 burkerts in giving a really good flow rate. go for a good flow rate and you will have good flipper. and saving weight having 70mm instead of 100mm. the ram setup in my robot air was like this and it flipped a heavy robot and it hit the roaming robots roof. something i dont think has been done again.

of course you dont have to do anything i say its just my opinions.

[swanaldo]

http://www.robotmarketplace.com/products/magmotors.htmlhttp://www.robotmarketplace.com/products/magmotors.html

[andrewj]

Ah, youre right. Sorry, my fault. Well kinda... C40-500s do exist but the most commonly used one is the C40-300.

Thanks for the advice Shane, at this rate Im learning at I may yet be able to construct a proper cardboard model of a heavyweight before the year is out

Gabriel II
WEIGHT: 100kgs
DIMENSIONS: 105 x 80 x 35 cm
SHAPE: Elongated triangular pyramid with steep rear and very shallow front
COLOUR: Largely yellow, with a red and yellow striped flipper and black shapes on each side. Kind of like No Objections in a Gabriel shape.
DRIVE: 2 C40-300 Magmotors driving 2 inner wheels with Vulkalon treads for grip, running off 3 NiCd packs at 24v
SPEED: 14mph average, 20mph max
GROUND CLEARANCE: 0 at front due to spring hinged nose, rising to 6mm at rear
ARMOUR: 3mm aluminium baseplate, with composite 5mm titanium (5mm hardox in critical areas) and 7mm HDPE on the rest of the body.
WEAPONS: A high pressure pneumatic front hinged flipper, consisting of the front edge of the body, running from 2 2kg CO2 tanks and a 70mm hydraulic full pressure ram with high flow rate, giving 25 flips in a match and capable of flipping 100kgs easily and lifting several times more than that. Also has hardened tool steel spikes located on either side of the front point, and it can spin in place to try and do damage with these.
SRIMECH: Via weapon. The back has spikes to prevent stranding
NOTES: Components shock mounted for protection vs. spinners and impacts. The main changes from the previous Gabriel, aside from the colouring and armour, are that it is now slightly wider and quite a bit lower, giving a lower centre of gravity and making it easier to get other robots on the flipper, and the drive has been upgraded. To make room for the changes, the gas capacity has been reduced and the armour made slightly thinner.
STRENGTHS: Difficult to get a grip on due to the shape, low centre of gravity
WEAKNESSES: Awkward shape for pushing with