Monster 1100 gearing

16-04-2010, 12:49 PM

I'm getting used to my new (2009) Monster 1100 and finding it easier at low speeds but have been thinking about changing the front sprocket from 15 teeth to 14 teeth, as many have discussed on this forum.

I made a note of speeds at certain revs in each gear and put a little table together:

With standard final gearing I calculate:

Code:

15/39 Teeth	4000	6000	8500
1st		27	40	57
2nd		37	56	79
3rd		49	73	103
4th		60	90	128
5th		69	103	146
6th		77	115	163

30mph in 2nd gear should be around 3,250 rpm and 20mph around 2,150 rpm.

Dropping to 14 teeth I calculate would give:

Code:

14/39 Teeth	4000	6000	8500
1st		25	37	53
2nd		35	52	74
3rd		45	68	97
4th		56	84	119
5th		64	96	136
6th		72	107	152

30mph in 2nd gear would be around 3,450 rpm and 20mph around 2,300 rpm.

Hardly seems worth the effort!

Geoff

16-04-2010, 12:49 PM	#1
gbrown Guest Posts: n/a	Monster 1100 gearing I'm getting used to my new (2009) Monster 1100 and finding it easier at low speeds but have been thinking about changing the front sprocket from 15 teeth to 14 teeth, as many have discussed on this forum. I made a note of speeds at certain revs in each gear and put a little table together: With standard final gearing I calculate: Code: 15/39 Teeth 4000 6000 8500 1st 27 40 57 2nd 37 56 79 3rd 49 73 103 4th 60 90 128 5th 69 103 146 6th 77 115 163 30mph in 2nd gear should be around 3,250 rpm and 20mph around 2,150 rpm. Dropping to 14 teeth I calculate would give: Code: 14/39 Teeth 4000 6000 8500 1st 25 37 53 2nd 35 52 74 3rd 45 68 97 4th 56 84 119 5th 64 96 136 6th 72 107 152 30mph in 2nd gear would be around 3,450 rpm and 20mph around 2,300 rpm. Hardly seems worth the effort! Geoff Last edited by gbrown; 16-04-2010 at 09:24 PM..