ULT "backpack" ultralight folding steel Roberts bike - 4.7kg


Sep 17, 2010
it's nice, but that red Roberts XCR-tubed, Campy road racer is more to my liking.

Simply classic.
Part / Make + Model / Wt(gms)
Frame (F&R) Roberts Columbus Foco, Dedacciai Blacktail, inc. S&S BTCs 1579g
Fork THM Scapula SP Tuned 1.125" (182mm steerer) 231g
Headset Cane Creek AER 1.125” 47g
Top cap & bolt AX Lightness 6g
Spacer 5mm carbon 1.125" 2g
Seatpost collar BTP Carbon 7g
Stem Carbonschmiede 97mm -7 degrees, 26,0mm 58g
Handlebar Schmolke Carbon TLO Modolo-bend (42cm ctr-ctr) 142g
Seatpost Schmolke in-line TLO 300mm 92g
Saddle AX Lightness Phoenix 53g
Crank/BB axle THM Scapula (LH 123g/RH & axle 157g) 280g
Bearings/cups THM Scapula (27.5g per steel bearing) 55g
Chainrings Dark Albert Carbon 50/36 (39/15g) 54g
Chainring bolts AX Lightness aluminium 8g
Brake/Shifters 2010 SRAM Red, BTP hoods & clamps (216+25+9) 250g
Brakes AX Lightness 3000 49g + pads/bolts 21g + misc. fixings 10g 80g
Brake cables Alligator iLinks/PowerCordz 32g
Rear derailleur SRAM Red tuned w/Dark Albert carbon cage/pulley wheels 112g
Front derailleur Campagnolo Record compact 10 Carbon (BTP tuned) 58g
Derailleur cables Alligator mini i-Links/Powercordz 28g
Pedals Aerolite Ti 70g
Chain Yaban 10S Ti 106 links 218g
Cogs/lockring Hellore Experimental Prototype Carbon 10s 11-23 68g
Front hub BTP Carbon 50g
Rear hub Tune Mag 140 145g
Rims (2) Reynolds KOM (20/24h) 450g
Spokes/nipples Sapim CX-Ray & DT Al 204g
Tubulars (2) Tufo Elite 110g 224g
QRs (2) Tune Skyline Road 18g
Bar tape BBB Pro Light tape (black) 33g + plugs 2g 35g
Tub tape Jantex 22
Bottle cages (2) BTP Kevlar & bolts 12g
Total = 4690 gms
What do you think of a folding steel bike that weighs less than most of the CF road bikes :)