Posted by grim (206.162.192.40) on July 11, 2003 at 20:50:30:
In Reply to: Re: Grim - Thanks posted by ovyyus on July 11, 2003 at 19:32:39:
: Hi grim,
: Re: your design drawing...
: The lead weights attached to the small disks are 1.5 lbs each.- Lead weights were 2 5/8" dia, with 1/4" pivit hole centered at 3/8" from edge.
Pivot hole to 1/4" center hole measures 15/16" center-to-center. There is no "small disks". Weights come out to be 3/4" thick for 1.5 lbs (weighed while
fabricated).
: The lead weights attached to the arms are 6 oz each.- I used 6 oz. egg sinkers (lead)
: The angle between pivot and 1.5 lb weight and the pivot and 6 oz weight is 90 deg.- Starting point 90 deg. Adjust angles for best ops.
: The 6 oz weight is 6 inches from pivot (centre of small disk).- Correct. But the lever ran from the 6 oz. weight to center of large (1.5 lb) WEIGHT.
The circle that the 6 oz. weight goes to the center of is the 1.5 lb. weight itself. Lever attached to its center with 1/4"-20 bolt and nut, later star washer to
hold it from getting flung loose and timing thrown off. 6" from center of large weight to center of 6 oz. weight.
: Questions:
: What is distance of 1.5 lb weight from pivot (centre of small disk)? -See above.
: What is overall diameter of main wheel structure?- Started out 15", went larger because the "egg sinkers" and axle
clearances were so tight they wanted to rub and pushed themselves past eash other. Axle was not a "thru' axle, was set in a
shaft/roller bearing setup on back side, i.e., bolthead in center on weight side, nut on backside to
secure disk to bolt. Bolt went into a roller bearing set and holder that was clamped flat to a table, with disk hanging
over edge. When you get it going you'll see why the design was sidelined.
: Thanks grim.
: Regards, ovyyus
No probs. Smithy and I spent some hours adjusting levers, timing, stop pins, etc, but work with it as we did and I'm ure you'll
get it to rip. A hint-turn the disk in your hands to set the bottom weight to be moved full up at the six o'clock position while you
are turning it (dynamic timing). Adjust the inner stop pin while moving it with your hands to swing free at the 1230-100 o' clock position
while you are moving it (also dynamic timing). As stated, the timing is a bear but if we didit you can too.
Regards
grim