Featherweight Database

**dudley_laver** · 23rd July 2007, 10:47

im currently building my featherweight at the moment and have changed design from pneumatic flipper to linear actuator crusher.
- making a razer style claw
- linear actuator in base of robot
problem
- making the straight movement into crushing power, at the moment it holds gently or drags claw backwards . Help needed . thanks

**dudley_laver** · 23rd July 2007, 10:48

will try and get picture on profile later to help

**woody** · 23rd July 2007, 12:02

Id make the claw and actuator assembly something like this .. +1>-------+2>C+2>.
where the --- is the actuator C is the claw and . is the claw pivot point.
Moving the actuator connection point up or down the back of the c (claw) will give you various jaw openings and crushing power.

(Message edited by woody on July 23, 2007)

**dudley_laver** · 23rd July 2007, 23:00

thanks for that idea, simular to dragons claw.
how does a razer style claw work then ?

**dudley_laver** · 24th July 2007, 10:58

pictures of testing can be found on http://www.freewebs.com/snowshifters www.freewebs.com/snowshifters ,this will give you an idea of what im trying to do.}

**grant_ploughbot** · 24th July 2007, 12:03

Razers claw works almost the same but with the pivot point and the actuator conection swapped around. The simplest way to explain it would be to have a bar of some sort, put a pivot in the centre and push on the bottom. This would rotate the bar. All you need to do then is shape the bar to a curve, work out the best distance between the actuator and pivot and your well on your way to a razer type crusher.

**Kenny** · 14th August 2007, 21:53

Flow! is nearly done so i thought i would post the specs.

Name: Flow!
Armour: 2mm Stainless
Chassis: the whole chassis is 16mm nylon the base is routered to 5mm to loose weight
Drive: Bosch 35s
Power: 2 x 7.2v 2.3ah race packs giving 14.4.v
Control: 2 x electronize and specktrum
Weapon: Full Pressure 60mm bore by 95mm stroke Square ram, fired by a burkert, fed by a 3 x volume buffer, from a 20oz paintball bottle.

**maddox** · 15th August 2007, 05:58

Just to mention, as we dont have the weapon system of Hannibalito II anymore, I had a month to create a new weapon system.

Hannibalito III is a strange fish in our stable.

The ram is diminished from 61mm bore 80mm stroke to 51 mm bore 75mm stroke.
The drive, from the hugely overpowered Speed 900s on a sidewinder with 18V 3600mAh NiMh Sanyos goes to the feeble Speed 720 BB torques on a Scorpion XL on 2300mAh batteries.

In other words, its an efford to avoid Self OOTAs