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| Libra V6 speedo http://www.gtmdrivers.com/forum/libra-v6-speedo-t4642.html |
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| Author: | oldshep [ Fri May 21, 2021 11:19 pm ] |
| Post subject: | Libra V6 speedo |
The speedo is failing on the Libra and my efforts to fix it have been unsuccessful, so I'm replacing it with a new rone from ETB . I have to set the new unit up for the appropriate speed sensor signal - does anyone know what signal the original Caerbont speedo uses? Choices are:- a) M8 NPN sensor b) 2-wire Magnetic Induction sensor c) 3-wire Hall-effect / OEM gearbox sensor My guess would be the Hall-effect OEM sensor - can anyone confirm that? Thanks. |
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| Author: | sanzomat [ Sat May 22, 2021 8:50 am ] |
| Post subject: | Re: Libra V6 speedo |
Not sure what gearbox the V6 uses. If its a PG1 it uses an electronic adaptor that takes the rotational drive and turns it into pulses. These came as standard on MGTF. Mine came originally with one of those adaptors on it feeding the wires to the GTM speedo - easy to spot on the top of the gearbox at the back, three wires. If you have one of those than OEM seems a good choice. |
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| Author: | sanzomat [ Sat May 22, 2021 1:08 pm ] |
| Post subject: | Re: Libra V6 speedo |
https://www.the-t-bar.com/forum/9-mgf-tf-pitstop/96551-instruments-calibration-data This might be useful if you do have the MGTF speedo transducer. Apparently it gives 4000 pulses per mile. http://etbinstruments.com/ETB_Gauge_Wiring_PDF/ELEC%20SPEEDO%20CAL%20INSTRUCTIONS.pdf ETB ship them set at 41000 pulses per mile so more than 10x out! |
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| Author: | oldshep [ Sat May 22, 2021 6:10 pm ] | ||
| Post subject: | Re: Libra V6 speedo | ||
Crikey, somebody knows a lot about electronics!......very useful stuff....Thanks My V6 has a PG1 gearbox and I had a poke around earlier........this looks like the speed sensor, so OEM it is. Thanks again for your help.
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| Author: | roger [ Sun May 23, 2021 10:17 am ] |
| Post subject: | Re: Libra V6 speedo |
Hi Why not just send it to Caerbont for repair? |
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| Author: | oldshep [ Mon May 24, 2021 11:18 am ] |
| Post subject: | Re: Libra V6 speedo |
Tried that, they don't do repair/refurb unfortunately. |
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| Author: | Elansprint [ Mon May 24, 2021 4:32 pm ] |
| Post subject: | Re: Libra V6 speedo |
What's wrong with the speedo the lcd display or something else |
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| Author: | roger [ Mon May 24, 2021 4:59 pm ] |
| Post subject: | Re: Libra V6 speedo |
oldshep wrote: Tried that, they don't do repair/refurb unfortunately. Have you tried Speedy Cables? They are in the same building. I always assumed they were the same compnay https://speedycables.com/ |
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| Author: | oldshep [ Mon May 24, 2021 6:02 pm ] |
| Post subject: | Re: Libra V6 speedo |
LCD display is OK but sometimes displays what I think must be a revs per mile number rather than the mileage reading. Speedo needle often fails to move, other times OK. Had it apart and resoldered a couple of dodgy looking joints but still unreliable/inconsistent. Fed up with taking it out, trying something else, reinstalling it, so I've stopped faffing around and bought the ETB equivalent which also has a few other functions as well as being cheaper. |
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