1992 Karakoram had a one-bolt replaceable hanger and drop-out adjusters and I thought the 1992 Richter 8.0 was the same frame - it definitely had drop-out adjusters, though I haven't had one, so can't vouch for the replaceable hanger.
 It did:viewtopic.php?t=209479
So I'd still bet on 1992 Richter 8.0
Ah well spotted, I had missed the Richter with single bolt (can't be seen in catalogue).
I did wonder about the black U-brake though as Richter seems to have one.
, ’95 Talera
, STOLEN ’95 Rebound
, ’96 Backwoods
, ’97 Timberline
, ’99 Tequesta
, ’99 Outpost Trail
, Outpost, ’06 Carrera zzzzz
, '88 Muddy Fox Courier, 92 Avalanche, 92 Saracen Rufftrax Elite, 90 Timberline... theres probably more in the shed.
I need therapy....some say THIS IS THERAPY !!!