Upgrade to 4 H.P. spindle

[coach]

If I upgrade to a 4 HP spindle would it be difficult to do to my 2007 Alpha?
Would I only need to swap the spindles out?
I know I would need an electrician as I am electrically challenged.
Any input would be appreciated.
Big price tag but I think it may be a good value.
Any input from you guys with 4 HP spindles?
Thanks, David

[Gary Campbell]

David...
You will have to change out the VFD also and possibly increase the wiring. Mine works well on a 240V 30A single phase circuit. Other than that, its not a bad job.
Gary

[coach]

Thanks Gary, Any idea of the cost of the VFD?
What is the max RPM on a 4 HP?

[Gary Campbell]

David...
I dont know an individual price. I personally would only buy one thru ShopBot as a combo with the spindle, then I know it is programmed correctly and then my speed control board will work.

Gary

[wberminio]

David
The max RPM's is 18,000.Mine runs on 3phase.
Worth the price.