QBX quads off roading , real extreme riding on a MTB track

Joined
Feb 7, 2008
Messages
4,541
Location
Nottinghamshire England
Hi all

I found this French quad QBX looks real smart except very tall and very big ?

QBX range



So catching up on their videos came across this : -


very fast and punishing down hill MTB track , they don't spare them at all lots of on 3 wheels and jumps.

Lots more vids here Videos

Paul
 
Joined
Dec 29, 2016
Messages
355
Location
Lanc's, England
Rear fixed axle? only one discs makes both rear wheel brake? so only god for off road?
Extremely high steering, hit a dead stop and goodbye teeth.
Otherwise interesting.
 
Joined
Feb 7, 2008
Messages
4,541
Location
Nottinghamshire England
Rear fixed axle? only one discs makes both rear wheel brake? so only god for off road?
Hard to say ? could it have free wheel hubs ?

Extremely high steering, hit a dead stop and goodbye teeth.
Yes it could be a little lower and not keen on the handlebar portion , however it would seem to get lots of steering lock you need a steering column like this ?

Otherwise interesting.
Yes a lot of good engineering , quite light and seems very stable for such a high seat ?

FRAME
Frame: High-strength aluminum sheet / laser cut and CN bent / "wolf trap" type reinforcement + 30% TIG welding
Paintwork: Thermo-lacquering: titanium gray metallic
RUNNING GEAR
Front/rear suspension: Front aluminum double wishbone + DNM DV22 rear shock absorber (150 lbs spring) / Rear aluminum swingarm + DNM DV22 rear shock absorber. (450Lbs spring) Travel : Front : 80mm / Rear: 120mm
Front/AT brake: 100% Hydraulic disc brake with 2 SHIMANO DEORE calipers/lever 2 front 140mm discs with QBX distributor / 1 SHIMANO DEORE caliper/lever 1 rear 160mm disc
Wheels: 24 '' Specific QBX hub / specific RYDE double-walled aluminum rim / 36 SAPIM stainless steel spokes
Front/rear tyres: 24 inches / 2.0 or 2.5 KENDA/HUTCHINSON/FAT 24×3.0 tire optional
ENGINE/TRANSMISSION
Type: 4×2 propulsion / 2 permanent rear wheel drive (100% human)
Electrical energy: Without Battery
Motor + crankset + housing: SHIMANO M521 24x32x42 / Without Motor.
Front derailleur: SHIMANO Acera/Alivio
Rear derailleur: SHIMANO 9V 11->32 or 11->34 / 12->36
Cassette / gearbox: Pinion: 22t / Crown: 22t ratio 1:1
Control : SHIMANO Acera/Alivio
Chain: KMC main and secondary transmission e9K
COCKPIT
Steering: Adjustable in depth and inclination
Seat: "Bucket" type structure with double skins in FV Polyester composite materials / Adjustment: depth 120mm / Absorbent: open cell aerated foam with integral cover in 3D fabrics
DIMENSIONS
Length / width / height (mm): 1850 / 940 / 1200 (M chassis) or 1930 / 940 / 1200 (L chassis)
Empty weight: 28kg with 24×2.0 tire (without: pedal and “fin” bumper)
AUTONOMY
Distance: unlimited, directly linked to the driver…
Pilot charging time: an entire night…
 
Joined
Oct 19, 2012
Messages
2,376
Location
Wakefield, UK
If it had freewheel hubs the brake wouldn't work. The handlebar position looks adjustable. Looks like there's a couple of bolts in the central mount to nip the inner tubing as it slides up and down.
 
Joined
Feb 7, 2008
Messages
4,541
Location
Nottinghamshire England
Good call on the brakes !

Its the vertical bars that don't appeal , I would prefer them slightly angled down ? /-\

Paul
 
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