A retro GT frame?

Currently got an old 90s frame set up as a SS commuter

Was considering making some adjustments to allow me to run it 1×9 (I’ve got an old drivetrain knocking around)

But given my experience with 1×10 I know I’ll need something to stop the chain coming off.

Any ideas? It’s a square taper bb with a 28.6 seat-tube and no iscg tabs. I’m presuming my only option is to go 3 x something as it was originally or just learn to pedal harder and keep it as a single speed

just cos you have a front mech in place, you dont have to add cable and shifter

old front mech or cheapo superstar one,

The old MRP devices mounted behind the BB lock ring I think. Failing that cheapest set of HTII cranks & BB and a BB mounted device.

Front mech!

I knew I’d forgotten something – cheers

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