Cerchio da corsa in carbonio 700C 50mm, 34mm esterno, 28mm interno, Tubeless Disc | Bola
Cerchio da corsa in carbonio 700C 50mm, 34mm esterno, 28mm interno, Tubeless Disc | Bola
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Il cerchio da corsa in carbonio Bola 700C da 50 mm - un cerchio a disco con ganci a forma di U da 50 mm, 34 mm esterno / 28 mm interno, 370-445 g, per allestimenti aero road e all-road con pneumatici larghi.
Una sezione aero da 50 mm con un canale ampio e moderno: progettato per il ciclista che non vuole scegliere tra velocità e il comfort di uno pneumatico da 32 mm.
Guida all'acquisto.
Fascia di peso - leggero ~370g (Ultralight): per ciclisti aero-all-road che affrontano salite e accelerazioni, desiderando il comfort degli pneumatici larghi.
Fascia di peso - superiore ~445g (Leggero/Peso medio): per strade più sconnesse e ciclisti più pesanti, aggiungendo un margine di resistenza agli impatti.
Larghezza interna - 28 mm: 30-40 mm a ~50-75 PSI per aero-all-road, 40-45 mm a ~40-60 PSI per superfici miste irregolari.
Serie stessa altezza: il cerchio UV da 50 mm e 23 mm ($310) è l'opzione veloce a canale stretto; il cerchio asimmetrico da 50 mm e 36 mm ($320) è ancora più largo.
Altezza adiacente: il cerchio da 45 mm e 34/28 mm ($310) è più leggero e più stabile in presenza di vento laterale.
Solo per allestimenti a disco; rispettare il limite di peso del sistema.
Pubblico di riferimento e note sull'utilizzo.
Corridori aero-all-road, ciclisti gran fondo e assemblatori di ruote.
Solo per telai con freni a disco; foratura 20/20, foratura personalizzabile. Limite di peso del ciclista di 120 kg.
Utilizzare nastro per cerchi da 30 mm per tubeless.
L'esperienza di guida che ti attende.
Montato con uno pneumatico tubeless da 32 mm, risulta veloce in pianura ma adeguatamente rilassato su superfici all-road sconnesse: abbastanza largo da offrirti comfort, abbastanza alto da supportare la tua velocità.
Arriverai più velocemente e meno affaticato.
Spedizione gratuita e una garanzia di 3 anni sul cerchio a supporto del montaggio.
Translation missing: it.product.metafields.specifications
- Materiale: carbon fiber
- Altezza: 50mm
- Larghezza esterna: 34mm
- Larghezza interna: 28mm
- Misura: 700c
- Profile: U-shaped
- Peso Tier: 370-445g
- PSI massimo: 90
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- Aero vs Climbing: The 50mm profile and 34mm outer width reduce drag but add approximately 50-100g over a 45mm rim. Riders prioritizing low Peso for climbs may prefer lighter shallower options.
- Stiffness vs Compliance: High-modulus carbon construction ensures lateral stiffness (≥8N/mm) for sprinting, but the U-shaped hooked profile and 28mm inner width provide some vertical compliance to absorb road buzz without sacrificing power transfer.
- Tire Volume vs Speed: The 28mm internal width supports 25-32mm tires, optimized for 28mm; wider tires increase comfort and grip but slightly increase rolling resistance and aerodynamic drag at higher speeds.
- Peso vs Durability: Available layups range from 370g to 445g; lighter options save ~75g per rim but may have slightly reduced impact resistance, while heavier options offer more robust fatigue life (verified >300kg compressive strength).
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- Fatigue Test: 750,000 cycles @640N (ISO 4210-7 Annex A, informative only)
- Impact Resistance: >40J (ISO 4210-7 reference)
- Flatness: <0.25mm (internal QC)
- Roundness: <0.3mm (internal QC)
- Max Raggio Tension: >300kg (internal QC)
- Ultimate Strength: >100kg (internal QC)
- Dynamic Equilibrium: <3g (internal QC)
- Radial Stiffness: 90–110 N/mm (internal lab)
- Lateral Stiffness: ≥8N/mm
- Max System Peso: 120kgs
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- Sprinting / Criterium: Good. Stiffness and aero help in sprints, but Peso may be a factor for punchy climbs.
- Triathlon / TT: Excellent. 50mm Altezza provides significant aero advantage at sustained speeds.
- Road Racing: Good. Balanced aero and stiffness, suitable for race days.
- Gran Fondo / Endurance: Good. Wide tire compatibility and Tubeless ready enhance comfort on long rides.
- Climbing / Hill Repeats: Not recommended. Peso (370-445g) is heavier than dedicated climbing rims; shallower profiles are lighter.
- Not Recommended For: Not recommended for extreme off-road or heavy gravel; designed for road and light gravel.
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- Frame Compatibility: 700c disc Freno road and light gravel frames
- Tire Type: Tubeless or clincher
- Tire Width Range: 33-48mm
- Freno Standard: Disc Freno
- Drivetrain: N/D
- Rotore Standard: N/D(rim only)
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| Translation missing: it.product.metafields.model | Translation missing: it.product.metafields.hub | Translation missing: it.product.metafields.spoke | Translation missing: it.product.metafields.bearing | Translation missing: it.product.metafields.weight | Translation missing: it.product.metafields.depth | Translation missing: it.product.metafields.width | Translation missing: it.product.metafields.price |
|---|---|---|---|---|---|---|---|
| Bola 700c Carbon Road Rim | N/A | N/A | N/A | 370-445g | 50mm | 34mm | vedi negozio |
| SES 4.5 AR | N/A | N/A | N/A | ~515g | 50mm | 30mm | ~$1000 |
| 505 | N/A | N/A | N/A | ~450g | 50mm | 28mm | ~$800 |
| CLX 50 | N/A | N/A | N/A | ~450g | 50mm | 30mm | ~$750 |
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What tire sizes are compatible with this rim?
The 28mm inner width supports tires from 25-32mm, optimized for 28mm. Modern wider road tires (28-30mm) pair well with the 34mm external width for optimal aero and comfort. Clincher and tubeless tires are both compatible.
How do I set up tubeless on this rim?
Use 30mm rim tape specifically for tubeless to ensure a reliable seal. Install the tire, add sealant, and inflate to seating pressure. The rim's hooked profile and 28mm inner width provide secure bead retention. Maximum pressure is 125 psi, but typical road pressures are 80-100 psi for 28mm tires.
What is the weight and how does it affect performance?
The rim weight ranges from 370g to 445g depending on the layup grade. Lighter rims reduce rotational weight, improving acceleration and climbing, while heavier options offer more robust durability and impact resistance. Choose based on your priority: climbing vs all-round performance.
Can I customize the rim for my build?
Yes, valve hole size (default 6.5mm), spoke hole diameter (default 4.5mm), and nipple angle (front 7°, rear 5° or 7°) can be adjusted. This allows wheelbuilders and OEMs to match specific hub and spoke requirements. Custom layup options are also available for weight vs strength trade-offs.
What maintenance is required for carbon rims?
Regularly inspect the rim for cracks, delamination, or impact damage. Clean with mild soap and water; avoid harsh chemicals. Check spoke tension periodically. Avoid overheating (e.g., prolonged braking) as it can degrade the resin. The rim's fatigue-tested construction (750,000 cycles) ensures durability under normal use.
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