[TheForge] air hammer

[Peter Fels & Phoebe Palmer]

You add to my education once again Jim...thanks!...pf

James Binnion wrote:
> Hey Pete,
> 
> Not really true, sure if you use the in expensive "solid state" phase 
> converters that are nothing but a few capacitors then this the result 
> you will get. But a properly sized and built rotary phase converter will 
> get you to at least 95% or better of the nameplate HP and an inverter 
> type converter like the VFD's are full name plate power devices with the 
> added bonus of speed control. So it all depends on how you do it. For 
> anything over 5HP you will probably be limited to rotary types but they 
> work fine and I have seen them up to 25 HP but you will need one hell of 
> a single phase circuit to run one of those :-)
> 
> Jim
> 
> On Nov 3, 2008, at 4:59 PM, Peter Fels & Phoebe Palmer wrote:
> 
>> An addendum; Converting a 3 ph to single phase looses about 1/3 of the 
>> power. There's a good argument for using jack shafts, pullys and belts 
>> to get the right RPM and HP with an inexpensive 1 Ph motor..pf
> 
> James Binnion
> jbin at well.com
> 
> 
> 
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