| posted on 25/5/23 at 09:54 AM
|Cheapo Dash Instruments:
There seems to be a variety of cheapo instruments on ebay incl GPS speedo. All Chinese of course but at <150 for a 6 guage set.....
Has anyone tried any of these?
| posted on 25/5/23 at 10:02 AM
|a gps based speedo will not pass IVA
"Note 1: The speedometer must be of a type suitable for M1 vehicle
use. This may be digital or a dial instrument. The types manufactured
for bicycles, racing only, those that rely on GPS or those that require
switching as a separate function to that of operating the vehicle or those
that have a separate power source from the vehicle or where they do
not operate as an automatic function when the vehicle is driven are not
permitted. Where the device is in question the presenter may provide
evidence as to the suitability of the device for road use from the
manufacturer of the device.
| posted on 25/5/23 at 10:17 AM
|gremlin1234 has covered the non usability issue.
You can also get free smartphone apps that use the phone GPS to give you a speedo reading. Tried them before (for comparison against the OEM tintop
guages). The speed is pretty accurate, but as per gremlin1234's post the phone device isn't powered by (or even connected to) the vehicle.
| posted on 25/5/23 at 12:00 PM
|You'd be much better with an acewell digital dash...
Fame is when your old car is plastered all over the internet
| posted on 25/5/23 at 12:34 PM
Originally posted by Mr Whippy
You'd be much better with an acewell digital dash...
They are good. Mine has worked perfectly for the past 15 years. Not the most attractive though
| posted on 25/5/23 at 07:08 PM
|Now you have my attention.
There seems to be no details on the sender needed for the 1st link.
| posted on 30/5/23 at 03:03 PM
|I note the point about IVA but my car is already registered......
Not keen on the Acewell Digital as I'm trying to go for a classic look.
Normally I'd be focussing on ETB but these are soo cheap and GPS avoids one problem - although it does appear to create another on the tacho side
| posted on 30/5/23 at 05:57 PM
quote:ok that's good,
Originally posted by spegru
I note the point about IVA but my car is already registered......
but it's a 'heads up' for new builders
| posted on 29/6/23 at 09:34 AM
|Following this, does anyone have any feedback on the reliability of a GPS speedo? I have a Smiths speedo from an MGB but the cable wiggles mean it
stops working after 20 mins or so (the inner cable works its way out of the back of the speedo) so thinking of replacing with an eBay GPS speedo.
Post-IVA too so no problems there, but I do want something that works properly. Does the GPS connection drop out at all or is it pretty consistent?
A speed sensor and Smiths electronic gauge would be the ideal but seems to be a £300 solution vs £50 for the GPS! If the GPS ones are OK I might
consider a Frankenstein modification of the MGB gauge...
| posted on 29/6/23 at 10:11 AM
|I bought a cheap chinese usb powered digital GPS speedo as a back up for the speedo in my MGB (equally as unreliable as yours).
Only downside is it can take a few minutes sometimes to get a signal, but once connected seems to stay that way. I should imagine the fitted GPS
speedo would have similar issues.
| posted on 29/6/23 at 12:45 PM
|Thanks. That sounds OK, the engine can warm up while the speedo connects!
I reckon I'm going to get one of the GPS ones and see if I can take the mechanical gubbins out of the original one and fit the GPS behind the
face with the original pointer. Doesn't seem possible to get a 100mm GPS speedo anyway (brand new Smiths aside) so hopefully I end up with