Some of those Indian made ones are quite an attractive price, I have not tried many of them but for a while worked for a shop that was an Enfield dealer so they seemed to work okay but I have no idea those sold online are the same as fitted to Enfield bikes.
But heres my takeaway... MOST of those wont look right on a British bike like an A10 or BSA preunit single.
The reason is on a enfield they have what is called a Casquet or Nacelle so its hidden when installed except the face. Notice in the picture they dont show a side or rear side view? So, I have seen a few people use them (And matching tachs) and installed them in cup like holders (Similar to A65, or OIF rubber cups, or Norton Commando type mounts that cover up the sides and back. So if you dont mind some fab work and creative work at it, they wont look right
#2) Many (Not all, but most) have metric threads and the mounts are metric as well as the cable housing threads so that is manageable but not easily solved.
So, that type do look rather cool and good prices, cant say how they hold up. But not exactly an easy swap and not look like bodgering.
All is not lost however, while noted, the later Smiths magnetic instruments are out there and cost less than the chronos, but they are not cheap nor are they inexpensive to overhaul and while a simpler design (The Chronos are like a swiss watch inside, but the magnetics are much simpler) they are not all that durable or easy to match up with the wide range of gear ratios and drives.
But there is a variety of repop instruments at very attractive prices and in the past there was a variety of them made.. Ill post some pictures if you like of some of them, But the old US distributor "Domiracer" and accyMart (Same place, Dommi was for shops and dealers the AM was the retail side) made their own repops and I liked them, I bought around 30-40 sets back in the day and had many happy customers, I have 2 pairs left-1 used and 1 new in box I am saving for specific projects. Dommiracer went out of business a couple years ago and I mourn their loss.
There is some other company(s) making repops now and in the last 10 years I have ordered quite a few sets and the prices were great, and they had 2 styles, Good knock offs of the magnetic models they had black face and grey face versions,, and I understand they make some now with Chronometric style faces but are magenetic internally. In the last 15 years I had only one customer who had a failure and I am still not clear what the problem was... Instrument or owner? But I have some here and can take some pictures for you.
Then there is a guy based out of Utah and he races a Norton and seems to be a promoter or operator of the road racing facility in Utah. I have met him at some of the Norton rallys and he is the US distributor of the modern Smiths instruments and they seem well made, durable and good quality. I have heard positive reviews and nothing negative except the price.
Tom killen?? I have his business card in my office,, If you are in the UK there is a UK dealer. But this guy is the US rep,,
See his website,,
http://smithsgaugesusa.com/I have looked them over extensively and cannot find fault with them, But I have not personally bought or used any of his.
** I cant find my grey face repops at the moment (Went and looked) but here is some others..
Some instruments with TRIUMPH logo. Not sure if those are repops are some sort of mid 70s factory triumph instruments (Anyone know)
Some of the Domiracer instruments,
Some NOS Chronos,, old dealer stock. Some of them were for police bikes and have certificates of accuracy presumably for court cases? (Oh! the irony!) Sorry, Not for sale
Set of generic repops on a 67 Triumph twin in my shop,,