Somewhere, in the mists of time, there exists a GS1100G pumpkin that reportedly lowers the overall drive ratio by a handy amount. However, this mythical beast has yet to be found and might only have existed in the fevered imagination of a drawing clerk in Hamamatsu.
Anyway, whilst gubbering around with a spare pair of pumpkins I made an interesting discovery, to wit;
The Cavalacade (GV1400) pumpkin has an input of approximately 2 and 5/8 turns to one output turn, and the GS850 has an input of approximately 3 and 1/8 turns to one output.
This means, should anyone be bothered to go to the trouble, there's roughly a 15% reduction in overall drive ratio to be had.
I have nearly all the bits available for the swap, but lack a Cav drive shaft, but as the fitting of the Cav swingarm will require it to be shortened anyway, it might fall into place that I could use the GS shaft - the input splines look the same on the two of them.
Simply swapping the pumpkins won't work, as the face of the GV pumpkin protrudes more than the GS one and fouls the GS wheel. Apart from that, the axle is thicker and the other side of the GS swingarm won't fit it - not insurmountable though.
No point in that for my purpose anyway, as I intend to use the wider swingarm from the GV to fit a fatter 15" tyre and be done with it.
Anyway, whilst gubbering around with a spare pair of pumpkins I made an interesting discovery, to wit;
The Cavalacade (GV1400) pumpkin has an input of approximately 2 and 5/8 turns to one output turn, and the GS850 has an input of approximately 3 and 1/8 turns to one output.
This means, should anyone be bothered to go to the trouble, there's roughly a 15% reduction in overall drive ratio to be had.
I have nearly all the bits available for the swap, but lack a Cav drive shaft, but as the fitting of the Cav swingarm will require it to be shortened anyway, it might fall into place that I could use the GS shaft - the input splines look the same on the two of them.
Simply swapping the pumpkins won't work, as the face of the GV pumpkin protrudes more than the GS one and fouls the GS wheel. Apart from that, the axle is thicker and the other side of the GS swingarm won't fit it - not insurmountable though.
No point in that for my purpose anyway, as I intend to use the wider swingarm from the GV to fit a fatter 15" tyre and be done with it.
)
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