I am 79Kgs...so more pygmy hippo than hippo!....I did indeed have one back in the late 1970s-early 1980s and don't recall any problems....i was about the same mass then.....might have had a smaller frameset.....i don't ride that aggressively at least don't think i do....but i'd ride geared with drops etc and take your point about safety....i average about 15-17mph with a bit more going down hill and a good deal less going up hill..i have made an ebay bid on a frame but i can retract that.....Do you have a 25mm seatpost?
I am 79Kgs...so more pygmy hippo than hippo!....I did indeed have one back in the late 1970s-early 1980s and don't recall any problems....i was about the same mass then.....might have had a smaller frameset.....i don't ride that aggressively at least don't think i do....but i'd ride geared with drops etc and take your point about safety....i average about 15-17mph with a bit more going down hill and a good deal less going up hill..i have made an ebay bid on a frame but i can retract that.....Do you have a 25mm seatpost?