On 13/07/10 22:37, Bob Ammerman wrote:
>>> brembo 6 piston caliper, 55 square centimeters worth of piston area
>>> decent brake pad CF is ~.8
>>> push the pressure to 3000PSI say.
>>>
>>> a 10" blade is say .1" thick
>>> weight is ~1kg, KE is 1500J
>>>
>>> converting to a linear motion to make life simple
>>> KE = .5MV^2
>>> sqrt(KE /.5M) = V
>>>
>>>   <snip calculations>
>>> so about 20mm give or take.
>>>
>>> seems fast enough for me?
>>>        
>> But that's only the very last step in the process. How long does it take
>> from when you receive the electrical trigger signal to when you actually
>> have the pads against the blade with 3000 PSI behind them?
>>      
> But you also have to stop the motor, which has a lot more mass than the
> blade.
>    
The last one I pulled apart was belt driven (it was actually having 
problems with belt slip) so just let the belt slip on purpose, if its an 
issue perhaps a clutch in the string may help.
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