How could I Improve pt 2

**paulc** · 17th August 2008, 20:13

D.V.D: THE THRID (Death Via Drum)

â‚¬ WEIGHT: 100kg

â‚¬ ARMOUR: 5mm Hardox body and 7mm Titanium wedges.

â‚¬ SHAPE: An invertible parallelogram shape ( /===/) with triangular sides and rear, slanted like this and the rear like this: . The wedges are hindged at 30*, making it very easy to get under anything.

â‚¬ MOTORS: 2 x LEM130â‚¬â„¢s at 36V = 18HP

â‚¬ LOCOMOTION: 4 Vulcanised Wheels with Aluminium 2 spoke hubs.

â‚¬ DIMENSIONS: (L) 90CM (H) 20CM (W) 90CM

â‚¬ COLOUR: White for the drums, black for the body and teeth of the drums..

â‚¬ WEAPONRY: 2 x 15kg Titanium drums with bluntened Hardox teeth, one in the front wedge, the second in the rear wedge. Both the drums are connected by a chain-and-gear mechanism, so when the front one spins, so does the rear, and they spin upwards. Both drums are powered by 2 x LEM130s at 36V, allowing a maximum speed of 3600rpm. Both drums have an output of 32.5kj each, and the wedges on the front and rear have an extension plate, allowing them to get under the opposing robot, and drum the bottoms. The power also means that I can pudh other around the ring as well. 1 Inch of PU Foam in the front and back mean that the robot wont shock-kill itself, or get shock-killed. The insides are also strapped and bolted down with Tool Steel bolts.

â‚¬ SPEED: 20mph

â‚¬ GROUND CLEARANCE: The front and rear clearance is absolute 0mm. 6mm on the sides and rear.

â‚¬ STRENGTH: Strong drums.

â‚¬ WEAKNESS: Unksirted side clearance.

Whats wrong with this?

**team_orr** · 17th August 2008, 20:34

ok thanks alex

forget chain drive, ill go for skid steering

would 2 bosch750s be better than the wheelchair motors

ill make the chassis out of 8mm titanium

i will also add 2 spikes made out of 5mm mild steel on the back

the new back plate is 5.5mm titanium

hows that?

jack

17th August 2008, 20:37

2 bosch 750s = 2HP

2 LEM-130s @ 36v= 18HP

2 LEM-200s @ 48v/60v = 50HP

2 B42-500s @ 48v/60v= 60HP

**paulc** · 17th August 2008, 20:40

Given youre making a rammer, Id use LEM130s at 36V, as they weigh only 1kg more than a Bosch, but they have 9 times more power per motor.

17th August 2008, 20:41

D.V.D: THE THRID (Death Via Drum)

I presume you mean the Third

â‚¬ WEIGHT: 100kg

â‚¬ ARMOUR: 5mm Hardox body and 7mm Titanium wedges.

Way too thick, though you may get away with 7mm titanium all over, which successful vapours like FOTW and BTRIII do.

â‚¬ SHAPE: An invertible parallelogram shape ( /===/) with triangular sides and rear, slanted like this and the rear like this: . The wedges are hindged at 30*, making it very easy to get under anything.

I dont understand how it can have an angled rear and be a paralellogram

â‚¬ MOTORS: 2 x LEM130â‚¬â„¢s at 36V = 18HP

Youll have to change either these or the weapon motors, or both

â‚¬ LOCOMOTION: 4 Vulcanised Wheels with Aluminium 2 spoke hubs.

â‚¬ DIMENSIONS: (L) 90CM (H) 20CM (W) 90CM

With 5mm hardox at those dimensions your gonna be overweight

â‚¬ COLOUR: White for the drums, black for the body and teeth of the drums..

â‚¬ WEAPONRY: 2 x 15kg Titanium drums with bluntened Hardox teeth, one in the front wedge, the second in the rear wedge. Both the drums are connected by a chain-and-gear mechanism, so when the front one spins, so does the rear, and they spin upwards. Both drums are powered by 2 x LEM130s at 36V, allowing a maximum speed of 3600rpm. Both drums have an output of 32.5kj each, and the wedges on the front and rear have an extension plate, allowing them to get under the opposing robot, and drum the bottoms. The power also means that I can pudh other around the ring as well. 1 Inch of PU Foam in the front and back mean that the robot wont shock-kill itself, or get shock-killed. The insides are also strapped and bolted down with Tool Steel bolts.

See motors.

â‚¬ SPEED: 20mph

â‚¬ GROUND CLEARANCE: The front and rear clearance is absolute 0mm. 6mm on the sides and rear.

With 0 at front and rear it wont move much

There are people (Leo,Kody etc.) who will be able to help more than me though

(Message edited by Swim2win on August 17, 200

**leorcc** · 18th August 2008, 06:33

quote:

There are people (Leo,Kody etc.) who will be able to help more than me thoughYoure doing fine, there is nothing you said I would have said any different.

**paulc** · 18th August 2008, 06:44

D.V.D: THE THIRD (Death Via Drum)

â‚¬ WEIGHT: 100kg

â‚¬ ARMOUR: 7mm Titanium body and 4mm Hardox for the wedge plates.

â‚¬ SHAPE: An invertible parallelogram shape ( /===/) with triangular sides and rear, slanted like this . The wedges are hindged at 30*, making it very easy to get under anything.

â‚¬ MOTORS: 2 x S28-400 MagMotors at 24V = 6HP

â‚¬ LOCOMOTION: 4 Vulcanised Wheels with Aluminium 2 spoke hubs.

â‚¬ DIMENSIONS: (L) 80CM (H) 20CM (W) 80CM

â‚¬ COLOUR: White for the drums, black for the body and teeth of the drums..

â‚¬ WEAPONRY: 2 x 15kg Titanium drums with bluntened Hardox teeth, one in the front wedge, the second in the rear wedge. Both the drums are connected by a chain-and-gear mechanism, so when the front one spins, so does the rear, and they spin upwards. Both drums are powered by 2 x LEM130s at 36V, allowing a maximum speed of 3600rpm. Both drums have an output of 32.5kj each, and the wedges on the front and rear have an extension plate, allowing them to get under the opposing robot, and drum the bottoms. The power also means that I can pudh other around the ring as well. 1 Inch of PU Foam in the front and back mean that the robot wont shock-kill itself, or get shock-killed. The insides are also strapped and bolted down with Tool Steel bolts.

â‚¬ SPEED: 15mph

â‚¬ GROUND CLEARANCE: The front and rear clearance is absolute 0mm. 6mm on the sides and rear.

â‚¬ STRENGTH: Strong drums.

â‚¬ WEAKNESS: Unksirted side clearance.

Hows this?

**leorcc** · 18th August 2008, 07:11

Paul,

8 * 8 * 0.14 * 4.5= 40.32 kg for the top and bottom plate.

The sides, without the angle is 8 * 2 * 0.14 * 4.5 = 10.08 kg, but that will be more because of the angles.

So on armour alone you are already on 50kg.

That, coupled with 4 wheels, 4 motors, all the mounts, gears, chains, and batteries, I dont see how this could be below 100kg if 30kg of it is already for the drums.