Ducati TT1750
Racing Bikes Ducati TT1750 | |
Production | 1984 |
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Class | Racing |
Engine | Four stroke, 90°Ltwin cylinder, SOHC, desmodromic 2 valves per cylinder, belt driven |
Compression ratio | 10.2:1 |
Ignition | KokusanBosch BTZ electronic |
Spark Plug | Champion RA6YC |
Battery | Yuasa 12V 14Ah |
Transmission | 5 Speed |
Suspension | Front: 35 mm Marzocchi magnesium fork Rear: Round section chrome-moly steel swingarm with adjustable (for preload) cantilever mono-shock, Marzocchi PVS 1 |
Brakes | Front: 2 x 280 mm Discs Rear: Single 260 mm disc |
Front Tire | Slicks |
Rear Tire | Slicks |
Seat Height | 762 mm / 30.0 in |
Weight | 130 kg / 286 lbs (dry), |
Manuals | Service Manual |
EngineEdit
The engine featured a 10.2:1 compression ratio.
DriveEdit
Power was moderated via the Wet, multiplate.
ChassisEdit
It came with a Slicks front tire and a Slicks rear tire. Stopping was achieved via 2 x 280 mm Discs in the front and a Single 260 mm disc in the rear. The front suspension was a 35 mm Marzocchi magnesium fork while the rear was equipped with a Round section chrome-moly steel swingarm with adjustable (for preload) cantilever mono-shock, Marzocchi PVS 1. The bike weighed just 130 kg / 286 lbs.
PhotosEdit
OverviewEdit
Ducati 750 TT1
The TT2 and later TT1. These spectacular machines were similar to Tony
Rutter's four-time World TT2 Championship-winning TT2 racers. Modeled closely
after the factory TT2, the production version also featured a 597cc engine using
special two-ring Borgo pistons (weighing only 408 grams). Valve sizes were 41mm
and 35mm, and racing camshafts provided 11mm of intake valve lift and 10.5mm of
exhaust valve lift. The crankshaft and con-rods were highly polished, with a new
steel clutch and straight-cut primary gears.
The clutch was a cable-operated wet type similar to the street bike. All TT2s
were fitted with an oil coolerthe 1982 version had a cylinder head bypass,
while the 1983 TT2 received a full-flow cooling system with stainless-steel
lines. 1983 TT2s also had a steering damper. All TT2s came with an electric
start. Ignition was the usual Bosch BTZ, with the battery situated in the
tailpiece.
The compact Verlicchi frame with cantilever rear suspension was shared with
the factory bikes, as was the racing Marzocchi fork with magnesium fork legs and
adjustable rebound damping. The Marzocchi rear shock had a remote reservoir and
adjustment for both compression and rebound damping. Wheels were magnesium
Campagnolo, 2.15 x 18-inch and 2.50 x 18- inch in 1982, with a wider 3.50 x
16-inch front and 3.50 x 18-inch rear for 1983. Brakes were 05 Brembo Gold
Series with fully floating disc rotors.
For 1984, a factory 750 kit was available to transform the TT2 into a 750
before a limited run of TT1 replicas was constructed. These were basically the
earlier TT2 fitted with a 748cc engine. The Valve sizes were identical. These
catalog racers were heavily based on the Tony Rutter 1984 TT1.
The Verlicchi frame was the same except for a wider aluminum cantilever
swingarm to accommodate the wider wheels. The Marzocchi fork and Brembo brakes
were shared with the TT2, but an outboard countershaft sprocket allowed for the
larger-section 18-inch rear tire, with an endurance-style quick-change assembly.
This allowed the disc and caliper to stay in the swingarm as the wheel and
sprocket were removed. The front wheel was still a 16-inch.
While largely unappreciated, except by the cognoscenti, the diminutive TT2
and TT1 were among the finest of all catalog Ducatis. In many ways they
epitomized Taglioni's philosophy of maximum performance through light weight and
simplicity. There was nothing superfluous on the TT, with function determining
the form of every component.
Source Ducati author Ian Falloon
Make Model | Ducati 750 TT1 |
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Year | 1984 |
Engine Type | Four stroke, 90°Ltwin cylinder, SOHC, desmodromic 2 valves per cylinder, belt driven |
Displacement | 748 cc / 45.6 cu in |
Bore X Stroke | 88 x 61.5 mm |
Compression | 10.2:1 |
Induction | 2 x 41 mm Dell'Orto-Malossi carburetors |
Spark Plug | Champion RA6YC |
Ignition | KokusanBosch BTZ electronic |
Battery | Yuasa 12V 14Ah |
Starting | Electric |
Max Power | 58.8 kW / 80 hp @ 10500 rpm |
Clutch | Wet, multiplate |
Transmission | 5 Speed |
Primary Drive Ratio | 1.944:1 (36/70) |
Gear Ratios | 1st 2.500 / 2nd 1.714 / 3rd 1.333 / 4th 1.074 / 5th 0.966:1 |
Final Drive Ratio | 3.15:1 (13/40) |
Final Drive | Chain, 520 DID |
Front Suspension | 35 mm Marzocchi magnesium fork |
Rear Suspension | Round section chrome-moly steel swingarm with adjustable (for preload) cantilever mono-shock, Marzocchi PVS 1 |
Front Brakes | 2 x 280 mm Discs |
Rear Brakes | Single 260 mm disc |
Front Tire | Slicks |
Rear Tire | Slicks |
Seat Height | 762 mm / 30.0 in |
Dry Weight | 130 kg / 286 lbs |
Colours | Red frame, red and blue |