Greenspeed Magnum XL

$3,290.00

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Description

Many recumbent trikes have “direct” (tiller type) steering, where for cheapness, the handle bars are clamped directly onto the kingpins, without any intermediate linkage, and bars have to be moved in the opposite direction to which you are going, with the weaker muscles of your arms. Whereas the GreenSpeed “Crossover” steering was invented by GreenSpeed to provide control with your bicep muscles, thus the steering is much easier and more intuitive to use. Furthermore, unlike other types of “indirect” trike steering, the GS Crossover steering provides superior Ackermann compensation, and a smaller turning circle, due to the fact that the steering rods cross over from one side to the other.

GreenSpeed as well as other forward thinking human powered vehicle companies have discovered that the rolling resistance of bicycle tyres does not increase until a camber angle of 10 degrees is reached, thus to improve stability without making the trike wider, to counteract tyre distortion while cornering, and to reduce rolling resistance in the turns, the Magnum front wheels have 5 degrees of negative camber. Plus on tight turns the steering geometry changes the camber of the inside wheel from negative to positive, again to reduce rolling resistance and tire scrub in the turns. Plus by swapping the tires from side to side ½ way through their life, more life can be obtained than if they were ran vertically.

Unlike a bike, the front wheels of a trike are offset some distance from the centre line of the machine. Thus, applying one front wheel brake, as when hand signalling for a turn, while braking, will tend to steer the trike in that direction. So, to compensate for this, the Magnum has Negative Scrub Radius steering geometry, whereby the brake reaction steers the trike in the opposite direction to which the braked wheel is pulling it. This happens so subtly that all the rider notices is that the trike continues in a straight line, when only one front brake is used. However, for emergency braking both brakes should be used, as this will double the braking power.

Frame 7005 Aluminium Alloy, with center fold.
Frame Size SD XL
Width 34” – 86 cm 36” – 91 cm
Length 66 to 76” – 168 to 193 cm * 74 to 84” – 188 to 231 cm *
Height 30 to 35” – 76 to 89 cm 31 to 36” – 78 to 92 cm
Seat Height 14 to 18” – 35 to 45 cm
Seat Angle 30 to 48 degrees
Crank Height 14 to 15” – 35 to 39 cm 14 to 16” – 36 to 40 cm
X-seam range 40 to 50” – 102 to 127 cm ** 44 to 54” – 112 to 138 cm **
Ground Clearance 6.5” – 16 cm
Turning Circle 14 feet – 4.0 metre
Track Width 31.5” – 80 cm 33.5” – 85 cm
Wheelbase 41.3” – 105 cm 45” – 115 cm
Front Wheels 20” Double wall alloy rims with eyelets & 36 stainless steel spokes with push button quick release.
Rear Wheels 20” Double wall alloy rim with eyelets & 36 stainless steel spokes with standard quick release.
Tires 20 x 2.0” Schwalbe Big Apple, 35 to 70 psi
Gears 27 speed
Cranks Shun SS-ZO-300 52/42/30 x 165 mm
Cassette 9 speed 11/34
Front Derailleur Micro Shift
Rear Derailleur Shimano Deore
Chain YBN S9
Shifters Shimano Dura Ace 9 speed Bar End
Gear Range 18 to 95” – 528%
Brakes Sturmey Archer 90 mm drums
Standard Equipment Rear mudguard, safety flag
Optional Extras Accessory posts, mirrors, headrest, luggage rack, front mudguards, chain gobbler.
Rider weight Limit 400lbs – 180 kg 450 lbs – 200 kg
Luggage Weight Limit 88lbs – 40 kg
Trike Weight 42 lbs – 19kg 44lbs – 20 kg
Boxed Size 33 x 29 x 18″ – 83 x 73 x 47cm 39 x 31x 20” – 98 x 79 x 50 cm
Frame Colours Red, Blue and Yellow

Additional information

Color

Red, Blue, Yellow

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