ever since I discovered the Viscount Dura Ace race bike
I've felt it was a direction the VA Sport resto should go in.
for fun here's a comparison.
below is the "Supabike's" spec sheet.
here's a side by side list of what was on the Supabike
and what will be on the Sport when it's done.
Supabike Aerospace Sport Restoration
FRAME: fillet-brazed, lugless fillet-brazed, lugless cro-mo with
cro-mo with sealed Italian threaded bottom-bracket,
bottom-bracket bearings Shimano Dura Ace* bottom
Shimano dropouts with bracket set, Shimano dropouts.
FINISH: brushed satin chrome zinc base powder coated
HEADSET: Steel, unknown make Shimano Dura Ace Cro-mo steel
FORKS: polished aluminium lugged crown cro-mo steel**
with sloping crown fully nickel-chrome plated
STEM: polished alloy with allen polished alloy Viscount stem
key adjustment with black with allen key adjustment, Nitto
cloth tape and black plastic alloy Dove bars in reverse position,
plugs tape and plugs TBD.
PILLAR: machined aluminium alloy integrated Shimano Dura Ace aluminium
micro adjustable alloy seat clamp and seat pillar
26.8mm dia. 26.8mm dia.
SADDLE: black suede Ideale 70 Competition leather saddle
with cro-mo rails
CONTROLS: Shimano Dura Ace Shimano Dura Ace twin d/tube. Satin
twin d/tube. Satin black silver finish with fingertip
finish with fingertip adjustment
SHIFTER: Shimano Dura Ace, Shimano Dura Ace, silver finish
satin black finish
DERAILLEUR: Shimano Crane, satin Shimano Crane, silver finish
CHAINSET: Shimano Dura Ace. Shimano Dura Ace. Black series crankset
Satin black finish. with silver finish chainrings. 42/52T
FREEWHEEL: 5 speed, close ratio. Shimano Dura Ace Oro 5 speed, medium
14, 15, 16, 17, 18. ratio, 14-24.
BRAKES: Shimano Dura Ace side- Shimano Dura Ace side-pull. Silver with
pull. Satin black with Dura Ace top tube clips.
top tube clips.
Shimano Dura Ace levers and gum hoods.
Kool Stop brake blocks.
RIMS: Alloy tubular sprint rims Sun CR18 alloy box wall clincher rims
SPOKES: Double butted Double butted
HUBS: Quick release large flange Shimano Dura Ace quick release
aluminium alloy, sealed large flange aluminium alloy,
bearings. Satin black free bearings. Silver finish, 36/36 spoke.
finish. 36/36 spoke.
TYRES: Tubular road racing Panracer Pasela Tour Guard
Kevlar-reinforced wire-beaded tyres,
27 x 1" (ISO 630 x 25)
PEDALS: One piece alloy/ satin MKS Sylvan alloy road pedals,
black finish, needle all silver finish
TOE CLIPS: "Cato's" MKS
TOE STRAPS: Quick release, black MKS quick release, brown.
CHAIN: Nickel-plated chain Regina "Superleggiera"
Brazed-on TA bottle Brazed-on seat tube clamp collar
fittings and bottle carrier,
separate seat pillar clip Brazed-on head tube
MUDGUARDS: none Honjo smooth finish 35mm
aluminium alloy mudguards and
lightweight mounting hardware
*wherever Dura Ace is listed for the Sport restoration, it is first generation
same as the Supabike.
** a future addition will be the same sloping-crown cast aluminium forks as Supabike.
the only specs that are higher on the Supabikes are the tubular rims with sew-up racing tyres
which are totally inappropriate for my needs anyway
and the axle adjusters on the drop-outs.
the chrome finish on the Supabike is a bit of an unnecessary weight gain.
the Sport's frame will have been considerably better finished than any production frame that came out of the Potter's Bar factory:
- the anti-rust treatment inside all frame tubes.
- the zinc base coat before the main powder coating
- the supporting collars for the head tube base and seat tube clamp
- the careful reaming and chasing of the bottom bracket
- the resetting of the frame stays and fork blades for the DA hubs' narrower 120mm width
- the higher tolerances on all parts fittings such as bottom bracket shell spacers
and now, just for fun, a recap of what all the resto parts look like separately...