Synch,o iF box for new DAF rigi s
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TWO new rigids have been announced for the UK market by DAF. Part of the 2100 series, the new models are in the 16 and 24-ton gross categories.
The six-wheeler, the FAS 2105 DHR, is plated at 24 tons gvw as a rigid and 32 tons as a drawbar unit and is powered by the DHR version of DAF's familiar 8.25-litre (503cuin) six-cylinder engine. In turbocharged form, it produces 150kW (202bhp) at 2,400rpm, with the maximum torque of 670Nm (4941bft) coming in at 1,600rpm. Oil-jet piston cooling is incorporated in this version.
An hydraulically-operated single dry plate clutch of 380mm (15in) transmits the power to a six-speed ZF AK665 constant-mesh gearbox with the GV 80 splitter as standard equipment.
Intended for haulage rather than tipper operation, the FAS. 2105 is a 6x2 design utilising the 2255 single-reduction axle. Two axle ratios are available: the standard 6.33 axle gives a maximum road speed of 86km/h (54mph) and a restart capability on a 1 in 5.3 gradient. With the optional 5.72 axle, the road speed is 95km/h (59mph) and the maximum gradient 1 in 5.9.
The suspension is by semi elliptic leaf springs at front and rear, with double-acting dampers on the front axle and the trailing rear axle. An antiroll bar is optional at the front.
Two wheelbases are available for the six-wheeler, 4.52 and 5.02m (14ft 10in and 16ft 6in), with a sleeper cab option for the longer chassis.
An important point to note here is that the DAF definition of wheelbase is from the centre line of the front axle to the centre line, of the leading rear axle. The lwb version allows a maximum platform length of 8.8. (28ft 10in).
As a guide to kerb weights, the swb model weighs 6.85 tonnes (6tons 15cwt). This includes five gallons of fuel, oil, water, tools and the spare wheel and carrier.
The new 16-tonner from DAF, the FA 2105 DH, uses the same basic engine as the sixwheeler but without the turbocharger. In this form it develops 116kW (156bhp) and 504Nm (3721bft) of torque.
In the transmission department, the synchromesh version of the ZF AK 6-65 gearbox is used. This is the first time a synchromesh box has been offered as standard on a DAF.
Interestingly ZF themselves quote a gearbox life of 5/7 that of a constant-mesh box under similar operating conditions. DAF is going to synchromesh for reasons of driver comfort so it might be the precedent for synchro boxes as standard throughout the DAF range.
The GV80 splitter is available on option with the 5.72 and 6.33 axle ratios, but not with the standard ratio of 5.14. This standard ratio with the direct top of the ZF box gives a top speed of 89km/h (56mph) and a maximum restart gradient of 1 in 5.
If a higher road speed is required, then the 5.72 to 1 ratio in conjunction with the splitter allows a top speed of 971un/ h (60mph).
The short cab version of the 16-tormer is available with a choice of four wheelbases 4 4.0, 4.45, 5.05 and 5.55m (13 lin, 14ft 7in, 16ft 7in and 18 3in). The sleeper cab versic deletes the two shorte: wheelbases and adds a Ion one at 6.1m (20ft).
As a guide to weights, th 5.5m version with a short ca has a kerb weight of 5.2 tonnes (5tons 4cwt), while th 6.1m sleeper version weigh 5.52 tonnes (5tons 9cwt). Th FA 2105 can be operated i drawbar form at 26.4 tonnE (26tons) gross.
Both the new DAFs ar available immediately at price of £13,770 for the FA an £19,160 for the FAS.