4ZA T38 carbon tubular wheelset
This 4ZA T38 carbon tubular wheelset was purchased from Pearson in September 2009
for use on the Ridley X-Ride. It is now also used on the Specialized S-Work
Tarmac. Click here for the History Log.
Rear wheel April 2011 after removal of Vittoria Cross Evo XM
Front wheel April 2011 with Vittoria Cross Evo XM
Use: Road, Chrono and Cyclocross
Rims: Medium profile, full carbon 38 mm for tubular only
Hubs: PMP front K001, rear K022 (Shimano) or
K023-10V (Campagnolo)
Body: Shimano or Campagnolo
Spokes: Sapim CX Ray
Nipples: Sapim
Weight: Kg 1,500 per pair
Hub - Front
PMP K001, black
PMP front hub
PMP/4ZA skewers
| Code |
K001 |
| Material |
Ergal 7075 T6 hot forged
and CNC worked |
| Flange diameter |
49 mm |
| hole c/c distance |
37,5 mm |
| Axle |
d. 12 mm made of hard
anodized ergal |
| Rabbet |
100 mm |
| Rolling |
2 shielded bearings
12x24x6 |
| Holes- round spokes |
16-18-20-24-28-32-36 |
| Holes- flat spokes |
16-18-20-24-28-32
(minimum 10 pieces.) |
| Wieght |
112 gr. |
| Colour |
Black or Silver |
| Price |
€ 85,00 + Vat |
Hub - Rear
PMP K023/10V Campagnolo, black
PMP rear hub
PMP/4ZA skewers (previously fitted)
Token alloy/titanium skewers (currently fitted)
| Code |
K023/9-10V |
| Material |
Ergal 7075 T6 hot forged and CNC worked |
| Flange diameter |
sprocket side 68mm - opposite side 59 mm |
| hole c/c distance |
sprocket side56mm - opposite side 45 mm |
| Axle |
d. 12 mm made of hard anodized ergal |
| Rabbet |
130 mm |
| Rolling |
4 shielded bearings 12x24x6 |
| Holes- round spokes |
16-18-20-24-28-32-36 |
| Holes- flat spokes |
16-18-20-24-28-32 ( minimum 10 pieces.) |
| Wieght |
287 gr. |
| Colour |
Black or Silver |
| Price |
€ 186,00 + Vat |
| Note |
Equipped with ergal 7075 T6 ring for
clamping 11 or 12- tooth sprockets (specify when ordering) |
Tyres - Cyclocross Race
Purchased from Pearson September 2009.
Tyres - Road
Michelin Boyau Race Tubular
Front 21mm and rear 24mm
These Michelin Boyau Race Service Course tubular tyres were purchased from GB
Cycles 30 May 2010. They are seen below being stretched on the 4ZA T38 wheelset.
It is rumoured that these tyres are made by Vittoria. The front tyre is 21mm and
the rear 24mm.
Click on the thumbnails for larger image
The Michelin Boyau Race Service Course tubular tyres come with a small tube of
tubular glue
4ZA T38 front wheel with 21mm Michelin Boyau Race Service Course tubular tyre
4ZA T38 rear wheel with 24mm Michelin Boyau Race Service Course tubular
tyre
Lezyne valve extender (subsequently replaced)
Cassette - Campagnolo Chorus 12-25T
Previously fitted. Current cassette is Campagnolo Centaur 12-25T
Note the unusual PMP lock-ring.
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