1993 Univega Via Carisma 60cm blue marble

Bi-Axial Power Oval frame

his is a perfect vintage gravel bike, best for 5’10”-6’5″ riders. The Via Carisma was Univega’s high-end hybrid bike. Its frame is absolutely beautiful ‘blue marble’ in like new shape. Hybrid bikes are lighter than mountain bikes, stronger than road bikes, and a lot more comfortable than both due to a more relaxed, upright riding position. This bike is a ‘gravel’ bike circa 1993.

This 1993 Via Carisma model uses Univega’s Bi-Axial Power Oval frame made of super light CroMoly steel tubes interestingly shaped: the top tube transforms from a vertically squished oval at the head tube to the horizontally squished oval at the seat tube. The downtube goes from a vertical oval at the head tube to the horizontal oval at the bottom bracket. 

This bike has a 21-speed Shimano Exage 500 LX drivetrain, designed specifically for hybrids, and beefed-up 700x38c wheels with gravel/touring tires that are fast enough on paved roads and tough enough off-road.

This bike’s bottom bracket bearings and cables were badly rusted and the shifters were clogged up so it was impossible to ride when I bought it. It was likely in storage for years, and because of that, the gorgeous ‘blue marble’ frame was preserved so well and still looks like new. I replaced the old-school bottom bracket with a new sealed Shimano BB and restored the original shifters.

This is Ruthy’s son’s bike now.

New & upgraded components

  • Bottom Bracket: Shimano sealed bearing cartridge
  • Cables and housings: Shimano/Jagwire
  • Tires: CST TopGear Road Hog 700x38c
  • Chain: Shimano CH-HG50 with key link for easy disassembly
  • Handlebar grips: GT Wings comfort kraton
  • Pedals: Promend slim platform with sealed bearings
  • Saddle: Cannondale leather gel

Original components

  • Frame: Univega Full-Chromo I Bi-Axial PowerOval all main tubes ovalized, double-butted, forged dropouts, made in Japan by Miyata
  • Fork: Univega Chromo/Hi-Ten, forged dropouts
  • Wheels: 700c Araya TX-350 rims, Shimano hubs, stainless spokes
  • Headset: 1″ threaded
  • Seatpost: Concept USA with quick release
  • Stem: Steel 40 degree 1″ diameter
  • Handlebar: flat 580mm
  • Handlebar grips: ATB True Grip
  • Shifters/Brake levers combo: Shimano STI Rapidfire Plus 7×3
  • Brakes: Shimano Exage 500 LX
  • Front Derailleur: Shimano Exage 500 LX
  • Rear Derailleur: Shimano Exage 500 LX
  • Cranks: Shimano Exage 500 LX with SG 28/38/48 teeth chainring
  • Bottom Bracket: Shimano cartridge 400 CX
  • Cassette: Shimano 400 CX 11-28T