over here, most who ere afflicted with the big instruments of the older models have changed to something else. None of my own Skorpions retained theirs for very long, the green on never had them.
The later smaller OEM instruments are much better and they are occasionally retrofitted. If you pick them up used, a good deal but you will aslo need a different
DENSO box or an Ignitech to make the tach work; last model Skorpions had that other orange-labeled DENSO box.
I have fit
their present model electronic speedo to customer's bikes and it very good. Not cheap, it is a classic 80mmØ instrument that can be fit into the instrument holder. The page has a link at the bottom to the matching tach. One customer paired the speedo up with the tach from a Yamaha SR500 which is the same size and mechanical.They ought to be plentiful and relatively cheap and the angle drive from the cam is a plug and play Yamaha part. And of course, the SR500 speedo would fit just as well. While still employing a magneto, I used a mechanical tach (SRX) driven off the cam.
Such a combination will give the owner wanting that classic round look what h is looking for.
Likewise, a stock Yamaha cockpit such as that of the SZR or TZR is pretty much plug and play as well and even offers the thermometer mentioned.
Mechanical speedo connects right up; thermometer needs a different thermosensor but that would be case for any thermometer; tach needs that other DENSO box mentioned above or a Sparker. The dash of my SZR (here) has never caused the slightest trouble; my green Skorpion originally also had this dash. I later fit the speedo to a customer's Tour; the tach was sill in use on my very early version racer.
Both of my street MZs used a
DET 100 instrument, the first of which I got 10 years ago (or more). While the instrument is very good, I fear for the health of the company is not as good. I have not been able to a rise out of them at all.
Here on my present Skorpion, along with the Kroeber/Pitsch tach(for decades THE reference racing instrument!) retained from the racer. This year I removed the Kroeber and sold it. the DET shows both rpm and speed and can be switched to show other data such as voltage at the moment or temperature if there is a sensor connected.
A tach is not really necessary for our engine away from a race track.
Several have an
Acewell instrument, usually this one:
http://www.acewell-meter.com/c0_1.php?pid=2&bid=10Quality and service a fine; it is made here in Germany, actually not far off from here.
Some have fit one or the other Koso unit, but I have not heard anything good about them once fit and subjected to the harsch environment of a big single.
Father up the price scale, there are several to chose from:
Motogadget offers several possibilities, none cheap, all extremely good.
Most popular with the single community is the Motoscope classic.
If your not afraid, check out their website to see all the goodies they have, There's some really sexy stuff there. One of my friends has the "M-unit" together with the Motoscope on his SZR. Awesome, it does everything but flush the toilet...
Then there is always the street-going version of the
Stack ST700Just as expensive or nearly so as the Motoscope, not as pretty but perhaps a bit better, Stack has years and years of justly earned reputation.
And of course for anyone wanting a plain and simple top quality tach, there is the Kroeber/Pitsch shown above and above all the
Scitscu,
again with decades of racing experience and justly earned reputation with the added advantage of not being all that expensive. There are a number of these fitted to Skorpions and SZRs. You need the one called "code red." Chris Hunsicker had one on his racer which he has since parted with.