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| Tacho for Megajolt (noob alert!) https://www.ausmini.com/forums/viewtopic.php?f=5&t=71851 |
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| Author: | mikearmour [ Thu Jul 14, 2011 6:51 pm ] |
| Post subject: | Tacho for Megajolt (noob alert!) |
hey guys, I've got 1275GT that the previous owner had a megajolt in. At the moment i've got the standard 1275GT 3 instrument cluster and the tacho isn't working. Its my very seat of the pants understanding that I can't use the original smiths tacho with a megajolt, is that right? if i can't use the smiths one, can someone recommend a brand or model to use? cheers Mike |
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| Author: | Fat Boy Dave [ Fri Jul 15, 2011 9:34 am ] |
| Post subject: | |
I'm running a smiths tacho with my Megajolt and it works fine (it is an aftermarket one though and only about 2 years old). If it is a RVI - current sensing type (I don't know for Clubbies) it can be done with some stuffing around. See here on the Megajolt site. http://www.autosportlabs.net/MJLJ_V4_vehicle_installation_guide#Interfacing_to_Tachometers |
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| Author: | NG [ Fri Jul 15, 2011 3:37 pm ] |
| Post subject: | |
you can use it with a normal tacho, but you need a stepper motor in the wire harness to make it work right. |
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| Author: | simon k [ Sat Jul 16, 2011 4:56 pm ] |
| Post subject: | |
I don't think the clubman tacho is an RVI type, I think it's the middle one linked to the page above NG wrote: you can use it with a normal tacho, but you need a stepper motor in the wire harness to make it work right.
 no, not a stepper motor
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| Author: | Morris 1100 [ Sat Jul 16, 2011 5:05 pm ] |
| Post subject: | |
There were two different types fitted to the squarenose Minis. I think the early ones were RVI and the later ones were RVC. I don't know when the change point was, could it have been about the time they went from the screw on speedo cable to the clip on cable? My guess is about 1973. |
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| Author: | mikearmour [ Sun Jul 17, 2011 8:35 am ] |
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my clubbie is 1981 so i'm guessings its RVC in that case |
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| Author: | simon k [ Sun Jul 17, 2011 11:02 am ] |
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mikearmour wrote: my clubbie is 1981 so i'm guessings its RVC in that case ah... you're in NZ so it's a UK car a guy on the turbominis forum wrote: I ran the mjlj tacho out wire straight onto the back of my standard 3 clock rev counter, and it works perfectly straight off.
I connected it to the pin that previously had the black and white wire running to it (from the coil) |
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| Author: | NG [ Mon Jul 18, 2011 4:59 pm ] |
| Post subject: | |
simon k wrote: I don't think the clubman tacho is an RVI type, I think it's the middle one linked to the page above
NG wrote: you can use it with a normal tacho, but you need a stepper motor in the wire harness to make it work right. no, not a stepper motor lol lol i meant a Tacho driver motor for coil-driven tachos. but he would need that. |
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