1968 650cc Bonneville, TR6C, TR6R
MODEL |
Bonneville
|
Trophy
|
Trophy
|
Daytona
|
Tiger
|
Trophy 250
|
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. |
2½ |
3½ |
2 3/8 |
2 3/8 |
2½ |
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 |