Difference between revisions of "Ducati 748 Biposto"
Revision as of 00:47, 15 June 2019
|Also called||748 Biposto, 748 - 748 S|
|Production||1995 - 96|
|Engine||Four stroke, 90°Ltwin cylinder, DOHC, desmodromic 4 valves per cylinder, belt driven|
|Top speed||248.7 km/h / 154.3 mph|
|Sparkplug||Champion RA 59GC|
|Frame type||Trestle type constructed of "ALS 450" steel alloy|
|Suspension||Front: Inverted type, 43 mm diameter stanchions, Showa GD051, fully adjustable |
Rear: Progressive linkage with adjustable monoshock, Showa GD052-007-02
|Brakes||Front: 2 x 320mm Discs, 4 piston calipers |
Rear: Single 220 mm disc, 1 piston caliper
|Front Tire||120/60 ZR17|
|Rear Tire||180/55 ZR17|
|Wheelbase||1410 mm / 55.5 in|
|Seat height||790 mm / 31.1 in|
|Weight||202 kg / 441 lbs|
|Fuel capacity||17 Litres / 4.5 US gal / 3.7 Imp gal|
|Oil capacity||3.5 L / 3.7 US qt / 3.1 Imp qt|
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It could reach a top speed of 248.7 km/h / 154.3 mph.
The engine was a Liquid cooled cooled Four stroke, 90°Ltwin cylinder, DOHC, desmodromic 4 valves per cylinder, belt driven. The engine featured a 11.5:1 compression ratio.
Power was moderated via the Dry, multi-plate, hydraulic control.
It came with a 120/60 ZR17 front tire and a 180/55 ZR17 rear tire. Stopping was achieved via 2 x 320mm Discs, 4 piston calipers in the front and a Single 220 mm disc, 1 piston caliper in the rear. The front suspension was a Inverted type, 43 mm diameter stanchions, Showa GD051, fully adjustable while the rear was equipped with a Progressive linkage with adjustable monoshock, Showa GD052-007-02. The 748 Biposto was fitted with a 17 Litres / 4.5 US gal / 3.7 Imp gal fuel tank. The bike weighed just 202 kg / 441 lbs. The wheelbase was 1410 mm / 55.5 in long.
Ducati 748 Biposta
First launched in 1994, the 748 was a smaller-capacity version of the 916 introduced the year before.The 748 was similar in many ways - the frame, suspension and brakes were largely identical to the larger bike. The maximum power output was not much less either, at 73kW (98bhp) compared to 81kW (109bhp) for the original 916. Perhaps surprisingly, the 748 felt markedly different on the road. The more highly tuned 748cc engine had to be revved higher for the same power output, and this rewy nature tended to make the rider feel more involved in the riding experience. Minor chassis differences - mostly different tyre sizes - give a different feel on the road, and many consider the 748 to be the better steering machine.
Source Bike Magazine of 1999 All that is best from the old country doesn't compare to the work of art that is the Ducati 748 Biposto (meaning two seater). People look at you very differently when you ride a 748. You could be a film star (Trainspotting's Ewan McGregor has one) or a pop star or just someone with more money than sense, but the secret is, you haven't spent more than the cost of a modern Japanese bike. The 748 we had last year covered 8500 miles without a problem. No electrical grief. No desmodromic histrionics. No bother at all. We're not saying that it's into the 'kick the tyres and fire it up' league of Japanese bikes, but maybe Ducati's reliability gremlin isn't as active as it used to be. Certainly we had no problems with our 748 last year, and the experiences of other owners seems to back this up. Riding the 748 shows that it is harder work than any other four cylinder machine, but that also means it's much more rewarding to get it right. The riding position of holding the front wheel spindle in your hands, while offering your bum up to the sun god means that your wrists, back, arse and knees endure varying degrees of pain (depending on your size). Suffice to say it's no fun around town - what with all that pain and slightly snatchy motor at low revs - but that's not what it's built for. And remember, these things aren't really for two, even if you've bought the Biposto. But if you go out and find some sweeping A-roads, you'll be hard pressed to find anything finer, especially for £8000-£8500. Many rate the 748 as the better buy over the 916/996, purely because the engine is a little rewier, therefore making the transition to the beautiful world of V-twins that much easier. If you can choose the colour, remember that everyone loves red 916s, but if you can get hold of a yellow 748, you will feel extra special. A set of pipes and you'll have the beautiful, unstifled sound to go with those looks. Careful when buying pipes, though, as any choice other than the very Italian Termignoni will see Don Giovanni and his rock hard nephews turning up on your doorstep. You have been warned.
Review To the joy of American riders, Ducati has finally decided to import the 748. Considered a baby brother to the 916, Ducati's 748 has been the darling of the European motorcycling press since its introduction. Basically a smaller-displacement version of the 916, the 748 trades off torque and low-end grunt for a higher rev limit through tricks like a lightened flywheel. The 748 made a surprise debut at the International Bike Show this year - Ducati showed up with one screaming-yellow single-seater, a price tag, and that's it. No brochures, no specs, but promises to deliver 200 copies to the States starting at the end of January. Only the solo seat version would be coming here, they said. But remember, we're dealing with an Italian motorcycle company. The bikes did arrive on time, amazingly enough, but other features like owner's manuals, shop manuals, warranty cards and so forth are apparently arriving "under separate cover." Interestingly my local dealer, Salem Honda/BMW/Ducati, opened the crate to find not a solo version, but a Biposto. Today's story from Bologna is that 40 of the promised 200 748s will be Bipostos.
Both versions are solid "I can't believe it's not butter" yellow, but the Biposto forgoes the single-seater's white pseudo-number plate tail section, instead having a vinyl passenger seat dyed yellow to match the rest of the tail, which it does surprisingly well. The wheels, like the frame, are a bronze/gold color. Not only do they look great in combination with the yellow paint, but more importantly, they hide brake dust and road grime well. If you've ever owned a bike with white wheels, you'll know what we mean. Although this bike is gorgeous, a careful inspection reminds you that it's definitely not a Honda or a Suzuki. A close look at the painted bodywork reveals a substantial amount of orange peel -- but nothing you'd notice unless your eyes were six inches away, waxing it under bright lights late at night in your garage (sigh). The neutral light indicates you might be somewhere near neutral, so you have to carefully feed out the clutch if you think you're there. And just because the neutral light isn't on, you can't assume you're in gear.
Gearbox action is pretty good (neutral demons aside), shifting easily but without the precision click feedback of a GSX-R. The shift lever is adjustable, of course, as are nearly all the controls on the bike, and shifting improved once I lengthened the connecting rod to tip the lever down more. Gearing is low compared to, say, a GSX-R, which is a good thing. First and second gears are not only usable around-town gears, but the shift down from second to first is very crisp, better than any other bike I've ridden, with the exception of a Honda RS125 race bike.
Although hydraulic, clutch effort requires the Jaws of Life. Also, brake feel is on the spongy side, but switching to braided steel lines made a phenomenal difference. The rear brake is pretty much ornamental. There's no fear of locking it up, even if you did something as unholy as ride this bike in the rain. It merely serves to settle the suspension slightly, and to keep the bike from rolling backWards from a stoplight on a slight hill. Surprisingly, Ducati has the Japanese manufacturers beat in a couple of design tricks. For instance, the positive terminal of the battery is easily accessible through the right body panel air vent, so you can hook up a trickle charger for storage season without removing any bodywork. And when you do remove the bodywork, it all comes off with Dzus fasteners. Additionally, Ducati has chosen to make the vast majority of other fasteners one of three sizes of allen wrench, or two sizes of ordinary nut, so you spend very little time scrounging in your toolbox for even fairly major servicing.
Gas mileage is pretty good, producing about 100 miles in around-town driving before the low fuel light comes on, indicating one gallon left of 4.5 gallons. Weight of Ducati's 748 is just over 400 pounds, but feels much lighter. On the road, you feel like Snoopy doing his vulture impression, perched seemingly out over the front wheel. Strangely, this doesn't put your helmet out in the open wind, and turbulence is minimal. The reach to the bars is fairly extreme -- remarkably similar in feel to the Honda RS125R two-stroke GP bike -- feeling very narrow with extremely direct and sensitive steering. Unfortunately, it also puts a lot of weight on your wrists. Because of this, the passenger seat is for briefly impressing your friends. If your significant other isn't tiny, you're going to have to get rid of either them or the bike. The riding position throws much of the passenger's weight on your upper back, which of course ends up on your wrists, tempting you to do a big wheelie and throw them off the back.
Throttle response is instantaneous, and thankfully devoid of the turbine-like windup experienced on a Japanese inline four. Under 5,000 rpm, it feels like an underpowered four-stroke single, making lots of thumping noises, but not really getting anywhere. Above 6,000 or so, it snaps alive and streaks away more like you'd expect, keeping your left foot busy on the shift lever. There's very little perception of speed or acceleration compared to a Japanese inline four. On the Ducati, you either realize you're screaming along by the rate at which other traffic appears to be parked, or by glancing down at the speedo.
The suspension is fantastic, if a bit stiff in the rear. This will undoubtedly improve after I've played with the adjustments in the rear. The Duck seduces you into taking corners faster than you're used to, not just because it's so much fun, but because it deceives you into thinking you're not really working it that hard - a lot more lean angle than normal feels just natural on the 748. The down side is that you find yourself unintentionally dipping deeper into your safety margin on the street, because severe lean angles on this bike don't feel as "serious" as on a high-center-of-gravity in-line four. The little Duck is an absolute blast to ride. Hell, it's a blast just to sit on at stoplights, ripping the throttle open, pretending to be checking some adjustment in the engine. I want to ride it through the store when I get my groceries. I want to widen my front door, and build a ramp so I can park it in my living room (hey, it doesn't leak oil). Get rid of that new car you bought, buy an old beater for those rainy days, and spend that car payment on one of these demons instead. Source
|Make Model||Ducati 748 Biposto|
|Year||1995 - 96|
|Engine Type||Four stroke, 90°Ltwin cylinder, DOHC, desmodromic 4 valves per cylinder, belt driven|
|Displacement||748 cc / 45.6 cu in|
|Bore X Stroke||88 x 61.5 mm|
|Cooling System||Liquid cooled|
|Engine Oil||Semi-Synthetic, 10W/40|
|Oil Capacity||3.5 L / 3.7 US qt / 3.1 Imp qt|
|Induction||Weber I.A.W. CPU 1.6M|
|Spark Plug||Champion RA 59GC|
|Max Power||72.1 kW / 98 hp @ 1100 rpm|
|Max Power Rear Tire||66.8 kW / 90.8 hp @ 10900 rpm|
|Max Torque||75 Nm / 7.65 kg-m /55.3 ft-lb @ 8700 rpm|
|Clutch||Dry, multi-plate, hydraulic control|
|Primary Drive Ratio||2:1 (31/62)|
|Gear Ratios||1st 2.466 / 2nd 1.765 / 3rd 1.400 / 4th 1.182 / 5th 1.043 / 6th 0.958:1|
|Final Drive Ratio||2.71:1 (14/38)|
|Final Drive||Chain, 520 VL4 - 5/8" x 1/4"|
|Frame||Trestle type constructed of "ALS 450" steel alloy|
|Front Suspension||Inverted type, 43 mm diameter stanchions, Showa GD051, fully adjustable|
|Front Wheel Travel||127 mm / 5.0 in|
|Rear Suspension||Progressive linkage with adjustable monoshock, Showa GD052-007-02|
|Rear Wheel Travel||130 mm / 5.1 in|
|Front Brakes||2 x 320mm Discs, 4 piston calipers|
|Rear Brakes||Single 220 mm disc, 1 piston caliper|
|Front Tire||120/60 ZR17|
|Rear Tire||180/55 ZR17|
|Dimensions||Length: 2050 mm / 80.7 in Width: 685 mm / 27.0 in Height: 1090 mm / 42.9 in|
|Wheelbase||1410 mm / 55.5 in|
|Seat Height||790 mm / 31.1 in|
|Ground Clearance||150 mm / 5.9 in.|
|Handlebar Height||850 mm / 33.5 in.|
|Dry Weight||202 kg / 441 lbs|
|Fuel Capacity||17 Litres / 4.5 US gal / 3.7 Imp gal|
|Consumption Average||5.8 L/100 km / 17.3 km/l / 40.7 US mpg / 48.9 Imp mpg|
|Braking 60 Km/h - 0||13.3 m / 43.6 ft|
|Braking 100 Km/h - 0||37.7 m / 123.7 ft|
|Standing ¼ Mile||11.2 sec / 195.2 km/h / 121.3 mph|
|Top Speed||248.7 km/h / 154.3 mph|