alright, it's not a 500, but it is a gs.
the problem i've crafted for myself is that the gs i'm working on origionally had a cable driven speedo off the front wheel, but it now has a different front end on it, my new front wheel has no drive for the speedo, nor enough room to cut it to add one.

there is no place on the tranny to run a cable from either (why would there be).

soo, i wanna run an electrically driven speedo, but all the sending units i find online are to convert cable drive to electric pulse, i have no cable drive to convert.

yes, i could quit complaining and settle for a $20 bicycle speedo that comes with the little magnet and such, but i's like to have a decent looking gauge.

so i'm just tossing this out there to see if anybody has had experiences with this, or know of anybody who has done it, seen it, or heard of it being done.

as usual, thanks in advance for any help.

Look on svrider.com There are several write-ups when they have done the gsxr fork swap and lost the stock sensor. They used a gsxr speed sensor and spliced it into the stock sv wire to the speedo. Mounted it at the front wheel where magnets were attached. The one I saw really looked clean where he set the magnets in the rotor buttons.

thanks for the info, the links were very helpful, got a few good ideas, it will eventually boil down (as many things do) to howmuchg money i have on hand at that point in assembly. of course i can always go cheap now and upgrade later.

A "bicycle computer" is probably your cheapest, simpliest solution. It just uses a sensor and magnet to read RPMs. You tell the box what your wheel diameter is and it takes care of the rest. Some of the good ones come with odometer, split times, etc.