Uses front tire 700C×28; rear size isn’t listed.
Velopedia Bicycle Archive
2010 Co-Motion PeriScope Hammerhead
Original specifications: Shimano Ultegra · 10-speed rear derailleur · 700c wheels.
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No archive photo is available for this record.
At a glance
Archive #21568- Model year
- 2010
- Category
- Tandem
- Original MSRP
- $6,950.00
- Sizes
- S, larger
- Colors
- Choice of 30 standard PPG
- In this record
- 25 specifications · original MSRP
Original buildACMUltra7 zonally-butted 7005 aluminum · Tandem Mix · 700c wheels
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | ACMUltra7 zonally-butted 7005 aluminum |
| Fork | AlphaQ X2 carbon tandem |
| Fork Material | Carbon |
Drivetrain
| Component Group | Tandem Mix |
|---|---|
| Shifters | Shimano Ultegra |
| Front Derailleur | Shimano Ultegra Triple |
| Rear Derailleur | Shimano Ultegra Triple |
| Crankset | FSA SLK Carbon Tandem, 30/39/52 teeth |
| Bottom Bracket | FSA Gossamer MegaExo |
| Cassette | SRAM |
| Rear Cogs | 10-speed, 11 - 28 teeth |
| Chain | Gates Carbon Drive timing belt system |
| Pedals | Not included |
Brakes
| Brakes | Shimano Dura-Ace front/Avid BB-7 mechanical disk w/203mm rotor rear brakes, Shimano Ultegra levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" threadless Chris King |
|---|---|
| Handlebar | FSA Gossamer Capt., and Co-Motion Stoker |
| Handlebar Extensions | Not included |
| Stem | FSA OS-115 and Co-Motion Telescoping adjustable stoker |
| Saddle | Selle Italia SLK Men's & Women's |
| Seatpost | Kalloy Seraph, 29.8mm diameter |
Wheels & Tires
| Hubs | Rolf Prima Tandem |
|---|---|
| Rims | Rolf Prima Tandem |
| Front Tire | 700 x 28c Continental Ultra Gator Skin |
| Wheel Size | 700c wheels |
No specifications match. Try a component name or clear your search.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Try your current gearingChanged tires or gears? Calculate your setup.
Your changes apply to this calculation. The archived build stays unchanged.
Gearing results
| Measure | Original | Your setup |
|---|---|---|
| Lowest ratio | — | — |
| Highest ratio | — | — |
| Total range | — | — |
| Lowest-gear speed | — | — |
| Highest-gear speed | — | — |
Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.
Parts & serviceability
Find replacement parts

Vittoria Zaffiro Pro V Clincher Tire Black, 700x28
700x28c
Replacement option
Other replacement options (1)

Specialized SW Mondo 2Bliss Tire Black, 700x28
700x28c
Replacement option
More parts (7)Fewer parts
30/39/52 teeth
and Co-Motion Stoker
29.8mm diameter
Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.
Parts and service referenceQuick reference before buying parts
Archived specifications for reference. Check the fitted parts before ordering.
- Front tire
- 700 x 28c Continental Ultra Gator Skin
- Drivetrain
- 10-speed
- Seatpost diameter
- 29.8 mm
- Bottom bracket / shell
- FSA Gossamer MegaExo
Equipment inspection checks 10 checks based on 5 archived component groups Open equipment checksClose equipment checks
Checks selected from the archived equipment. Confirm what is fitted today. This is not a complete safety inspection; use the full inspection guide before test riding.
Full used-bike inspection guide →
Frame and fork
Inspect the frame and fork →Archived: Frame: TIG-welded · Fork: AlphaQ X2 carbon tandem · Carbon
Drivetrain
Check drivetrain wear →Archived: Group: Tandem Mix · Shifters: Shimano Ultegra · Front derailleur: Shimano Ultegra Triple · Rear derailleur: Shimano Ultegra Triple · Crankset: FSA SLK Carbon Tandem, 30/39/52 teeth · Bottom bracket: FSA Gossamer MegaExo · Cassette: SRAM · Rear cogs: 10-speed, 11 - 28 teeth · Chain: Gates Carbon Drive timing belt system
Brakes
Inspect the brakes →Archived: Brakes: Shimano Dura-Ace front/Avid BB-7 mechanical disk w/203mm rotor rear brakes, Shimano Ultegra levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 700c wheels · Rims: Rolf Prima Tandem · Hubs: Rolf Prima Tandem · Front tire: 700 x 28c Continental Ultra Gator Skin
Controls and contact points
Archived: Headset: 1 1/8" threadless Chris King · Handlebar: FSA Gossamer Capt., and Co-Motion Stoker · Stem: FSA OS-115 and Co-Motion Telescoping adjustable stoker · Seatpost: Kalloy Seraph, 29.8mm diameter · Saddle: Selle Italia SLK Men's & Women's · Pedals: Not included
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.



