Puffer pulley size

Strebs

Jr. Member
May 16, 2014
88
127
New Mexico
Primary Interest:
Prospecting
Hello, been building a drywasher, im using a wiper motor with gear reduction maybe 25-50 rpm. For those who used this style what size pulley are you using on bellow side. Currently running 2 1/2 to an 11 inch. I was thinking a 5 inch would be an happy medium.
Thanks, Strebs 20181204_142215.jpg
 

arizau

Bronze Member
May 2, 2014
2,479
3,854
AZ
Detector(s) used
Beach High Banker, Sweep Jig, Whippet Dry Washer, Lobo ST, 1/2 width 2 tray Gold Cube, numerous pans, rocker box, and home made fluid bed and stream sluices.
Primary Interest:
Prospecting
My Whippet runs in close range of 100 strokes per minute if I remember correctly(?). I would say at least shoot for 1 per second.
 

1637

Bronze Member
May 26, 2011
1,766
2,407
tujunga ca
Detector(s) used
xlt mxt gmz and now a gmt whites
i use a speed control on mine,but ive changed the pulley alot,its alot of trail and error.just leave enough room for different size pulleys,also different dirt like different speeds.
good luck brad
 

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