Alright if you cut a linear spring then the spring rate will not change (take it from a mechanical engineer). The harm in doing this is that you are taking away from the available suspension travel. That's perfectly fine until you hit a bump and "ask" the suspension to travel farther than its "allowed" to. This is when you "bottom out" the suspension and it becomes worthless and your ride quality ( along with handling ability in most cases) goes to caca. Cutting springs is generally not a good idea and can be very dangerous if not done properly.
Ryan
P.S. I can supply equations for anyone who is interested in the first statement.
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