Basically I came into possession of a lovely amf Hercules bicycle from the early 60s, it is however a woman's bicycle, and me being a bloke, am not going to be caught riding round on a woman's bike, so I was wondering if it was at all possible to cut out the 'top tube' and re lug it in the place of a gentleman's bike frame, I understand it wouldn't be a proper gents bike as geometry would be off, but it saves wasting an old frame.
Thanks for any help in advance

Sorry dude the proper term is a Step thru Market bike, when loaded you do not need to swing your leg over it but you step thru to mount the bike.

I wouldn't expect to see any geometry difference between the male/female versions of a bike of that age. That idea didn't become common until later.
And even now, is generally only found on more performance oriented bikes.


Even today, most WSD bike frames are simply a little higher for the same overall fore-aft length when compared to the male models. Angles, fork rake etc tends to stay the same.


WRT to reworking a step-through frame into a traditional diamond frame - well, it's doable, but unlikely to make any financial sense.
It'd provide some nice work for a frame builder and his painter, but it'd cost more than buying a frame to your liking instead.


If you want to avoid scrapping a frame you'll simply have to hold onto it until you find someone willing to take custody of a step-through frame. Or build it up and hope to be able to sell it on.


I have no issues with using step-through frames for casual riding.
And I bet no one will care.
Ride more, fret less.

Hmm...
One of my pals, when I was about 9 years old, had a bike on which his dad performed a quick sex change with a horizontal piece of broomstick, some spray paint, and a couple pieces of wire.
Brent

Just miter in a top tube and braze it in place if you really need that cross bar.

Schoolboys in grade school would kid a male on a women's bike, but that just is an example of the cruel traits of children.

Wait till your hip joint goes out and its painful to get on a diamond frame bike..

BITD, for kids there was a Cruiser , 2 bolts on the front and back end of a faux 'gas-tank'

the bike could then be handed down between siblings of opposite genders .

[the third "tube" was added, with out destroying the structural integrity of the step thru frame.]

The Streets of Amsterdam have many men on OMA bikes , when you get mature and marry
it will be good to have that type frame when its your turn to ride the bike
with your child in the seat behind the saddle.

Apologies for not knowing the correct term, I've never really been interested in "step through" frames, therefore have not researched it much. I will probably sell the bike as a whole to someone who can appreciate it more than me then, I would keep it for when I can't comfortably ride a traditional bike, but I'm only 16 and don't plan on that happening any time soon

You should just sell it and get a bike you like. It's way more work and money than is practical to do what you're asking. Maybe you can find someone to trade with.

It's possible to melt down gaspipe, add alloying elements, draw the tubing through dies, double-butt it, and braze up a new frame. So, sure, what you're describing is possible.

For 1/10, maybe 1/100th the effort and cost, if you want a diamond frame bike, buy one, and sell/give the one you have to someone else. Old 3-speeds are plentiful and inexpensive.

Somehow near me old 3 speeds are not plentiful,nor inexpensive, but yes I shall be looking to trade this bike for a diamond frame bicycle, this bike is a standard single speed and IMO I'd prefer to have a single speed vintage bike than a 3 speed