Ok, after reading some of the posts here I decided to try and cut my windshield down 2 inches on my roadking....It was a piece of cake..Here is how I did it if you are interested..
1.) removed windshield from bike and mounted face up on bench, using bar type wood clamps on the metal mounting section of the windshield.
2.) covered all of the windshield with blue masking tape (to stop scratches).
3.) got a piece of cardboard from recycle bin and taped it to the front of the windshield
using the metal cross piece as a bottom line (just butted the cardboard against the cross piece)..
4.) using a sharpie from the bottom I drew the outline of the windshield on the cardboard, removed the cardboard and cut the line with scissors (now I have the shape of the windshield curve on the cardboard).
5. next I layed the cardboard back on the front of the windshield and slid it down 2 inches and then marked the windshield with the sharpie (on the blue tape)..now the same curve as the original windshield edge is marked on the windshield only lower..
6.) got out my trusty saber saw with a med. wood blade and cut the line I drew on the tape (I started in the middle and worked my way to each edge, but it was probably not necessary). When I cut with the saw I cut a little outside the line to leave a little plastic (and the mark) so I could keep everything neat and even when I sanded..if you don't you won't have a line when you sand and you might end up sanding one side more that the other...
7.)next I got out my 1/4 sheet sander and sanded the cut edge using the following grits in order 100,180,220,460,1000,1500...I checked after each sanding looking for rough marks and going back if needed (I needed to go back between 100-180 because there were still some saw marks)...also, I made sure and wipe everything down after each grit..
8,) to finish the job I put some MAAS metal polish (same as semichrome metal polish) on a small rag and wiped along the whole cut edge for a couple minutes and let it dry there...then I put a small buffer wheel on my drill and polished the edge...
9.) removed tape, washed windshield, reinstalled...it looks great and you can't even really tell its been shortened (unless someone tells you)..
10.) saved about $150...total work time 1.5 hours....easy peasy..
***note to self ..next time take before pictures***

 

how tall are you and what is the height of the windshield now?

 

Good job, looks great.

 

I am 6'1' and the windshield is 2 inches shorter than stock (whatever that is)..the only issue I have now is...I replaced the seat with a harly hammock seat and it is somewhat taller so now the windshield is about a inch lower than ideal....But, I think I will just leave well enough alone as taking off a inch is much easier than putting it back on!! (and the wind still flows over my head)...

 

often easier to cut the bottom edge.

leaves the nice factory edge exposed and any crap work ( mine) concealed.

mike

 

This is on a RK. You cut the top or nothing.