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irenesg 14th January 2011 02:37 PM

Percussion drill DY design Need help and ideas
Here i try to build cheap Percussion driller for drilling 40m deep well.
i already bought 3000RP diesel engine (very old for $50).
i drafted here sample. my worry is it wont work i need at least 2m pull and free drop to drill.
please guys help me out with ideas thank you.
here attached the file

BigE 14th January 2011 03:23 PM

Make sure you've stepped down the gearing so that the rpm of the motor does not lift the cutting head prematurely.

You could decrease the drop and free-fall time by making the cutting tool heavier...

mickeymoose 16th January 2011 12:41 AM

2 Qs:
How do you intend to remove the loose material in the bore-hole and what happens if you hit bedrock? E

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