RE: Anyone know anything about this old compound bow?
I never had one but I shot with a guy that did. Did you say "drilled and tapped the riser"? Ouch!!!!!!!!! This thing is probably worth more as a collectors item, or was.
Yes, cast aluminum riser and wood/glass laminated limbs. Not sure about the letoff, but seriously doubt it was 50%, more like 35%. Quite a bow back in it's day.
Were it mine I think it would be finding a place above the mantle or some collectors house.