Triumph Motorcycles

Triumph 1968 Models

Triumph 1968 650cc Models

1968 650cc Bonneville, TR6C, TR6R

Triumph 68 Daytona T100T and T100R

1968 500cc

1968 500cc US Models

Triumph 68 Trophy 250

1968 250ccs

Triumph 1968 Model Specifications

MODEL

Bonneville
(T120R)

Trophy
Sports
(TR6R)

Trophy
Special
(TR6C)

Daytona
Super Sports
(T100R)

Tiger
Competition
(T100C)

Trophy 250
(TR25W)

Engine type

O.H.V.

O.H.V.

O.H.V.

O.H.V.

O.H.V.

O.H.V.

Number of cylinders

2

2

2

2

2

1

Bore/stroke, mm.

71 x 82

71 x 82

71 x 82

69 x 65.5

69 x 65.5

67 x 70

Bore/stroke, ins.

2.79 x 3.23

2.73 x 3.23

2.79 x 3.23

2.72 x 2.58

2.72 x 2.58

2.64 x 2.75

Capacity, cu. cms.

649

649

649

490

490

250

Capacity, cu. ins.

40

40

40

30.5

30,5

15

Compression ratio

9:1

9:1

9:1

9:1

9:1

8.5:1

B.H.P. and R.P.M.

52 @ 0,500

45 @ 6,500

45 @ 6,500

41 @ 7,200

38 @ 7,000

22 @ 8,250

Engine sprocket teeth

29

29

29

26

26

23

Clutch sprocket teeth

58

58

58

58

58

52

Gearbox sprocket teeth

19

19

18

18

18

16

Rear sprocket teeth

46

46

46

46

46

49

R.P.M. 10 m.p.h., top gear

634

634

666

744

744

995

Gear ratios - top

4.84

4.84

5.11

5.7

5.7

6.92

- third

5.76

5.76

6.09

6.97

6.97

8.6

- second

8.17

8.17

8.63

9,16

9.16

11.4

- first

11.81

11.81

12.46

14,10

14.1

18.3

Carburetor - make

Twin Amal

Amal

Amal

Twin Amal

Amal

Amal

- type

930

930

930

626

626

928

Front chain size

3/8" x .225" x .25" Duplex

3/8" x .225" x .25" Duplex

3/8" x .225" x .25" Duplex

3/8" x .225" x .25" Duplex

3/8" x 225" x .25" Duplex

3/8" x .225" x .25" Duplex

Rear chain size

5/8" x 3/8"

5/8" x 3/8"

5/8" x 3/8"

5/8" x 3/8"

5/8" x 3/8"

5/8" x 1/4"

Tire - front, ins.

3.25 x 19

S.2S x 19

3.50 x 19

3.25 x 19

3.50 x 19

3.25 x 19

- rear, ins.

4.00 x 18

4.00 x 18

4.00 x 18

4.00 x 18

4.00 x 18

4.00 x 18

Brake diameter - ins. (cms)

8 F (20x32) 7 R (17x78)

8 F (20x32) 7 R (17x78)

8 F(20x32) 7 R (17x78)

8 F (20x32)

7 R (17x78)

7 F (17*78) 7 R(17*78)

7 F (17*78) 7 R(17-78)

Finish

Scarlet/Silver

Riviera Blue/ Silver

Riviera Blue/ Silver

Aquamarine/Silver

Aquamarine/Silver

Scarlet

Seat height- ins.

30½

30½

30½

30

30

30

Seat height- cms.

77.5

77.5

77.5

76.2

76.2

76.2

Wheelbase - ins.

55½

55½

55½

53½

53½

52

Wheelbase - cms.

141

141

141

136

135

132

Length - ins

84½

84½

84½

83¼

83¼

82

Length - cms.

214.5

214.5

214.5

211.5

211.5

208

Width - ins.

27

27

27

27

27

28

Width - cms.

68.5

68.5

68.5

66.5

68.5

71

Clearance - ins.

7 1/8

7 1/8

7 1/8

7 1/2

7 1/2

7 1/2

Clearance - cms.

18.1

18.1

18.1

18.1

19

19

Weight- lbs,

386

386

384

354

340

285

Weight - kilos

175

175

174

161

154

130

Gas - gals.

2 3/8

2 3/8

2Vk

Gas - litres

11

16

11

10.8

10.8

11

Oil - pints

6

6

6

6

6

4

Oil - litres

3.4

3.4

3.4

3.4

3.4

2.27