ok, here's one i've done that i haven't seen anyone else do.
your results may vary, things may not fit together, it may overheat and catch fire or something,
headlight bucket modded to fit speedo/tacho
cost: varies, if you have the stuff, like i did, then around $15 +your time
needed stuff: about 10cm2 of fibreglass cloth, resin to match, some kind of filler, i used water based wood/ genreal purpose filler, because it's easy to sand. paint and primer. headlight bucket and light assembly, tacho or speedo w/casing
why: i wanted to clear some space on my cb350 bars, lower the profile, and give it a hint of 60's styling.
process:
- dissasemble speedo
-take speedo case, mark inside bucket a circle the size of top, cut this out, look at it. do you like it's position etc. keep cutting bucket until you strike the perfect balance between useful position, aesthetics, and fitting the light assembly in the bucket. the back of my light touches the threaded drive on the bottom of the speedo, so it
will be a close fit, depending on what you're using.
-when it all fits together, with all the parts in there, then you're ready to fix it.
-mask both sides of the speedo glass off. (i didn't do it on the inside, mistake!)
-tape the case to the bucket in your favoured position from the inside. check everything fits together again.
-fill all the gaps on the outside with filler, bulk it up and lay it on thick, it will sand of afterwards.
-after the filler has set, remove the tape from the inside and cut some stamp sized pieces of fibreglass. use these to cover all the bare filler, making sure to make a good connection to the bucket and case. make sure not to get any inside the speedo casing that would impede insertion. i did, and i doesn't go all the way in, but you guys are pretty talented, and neater then me, so you should be fine
-after the resin has set, start sanding the outside. sand all planes flat, make all the surfaces regular and make sure they match the changes of surface on the standard buckt.
-paint it.