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SuperCooper
 Post subject: Impulse tacho rvi
PostPosted: Sun Jun 29, 2014 9:56 am 
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998cc
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Joined: Mon Feb 05, 2007 10:53 pm
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Location: NSW
is anyone running a smiths RVI impulse tacho with electronic ign module?
Does it work properly? Any problems.

Some forums ive searched say its a no go...

Cheers....

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drmini in aust
 Post subject: Re: Impulse tacho rvi
PostPosted: Sun Jun 29, 2014 10:46 am 
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I believe a mod is needed to run the old RV1 (inductive loop) ones with electronic ignition.
http://www.nisonger.com/electric-tachom ... rsions.htm
I didn't think the mods needed were this drastic though!

The current impulse type ones work fine. I'd buy one of these if you want a Smiths, personally I'd buy something else with better damping.
http://minispares.com/product/Classic/G ... o%20search

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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SuperCooper
 Post subject: Re: Impulse tacho rvi
PostPosted: Sun Jun 29, 2014 12:04 pm 
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Thanks doc. Thought it may be a problem. Might it try b4 I get something else though...

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IndigoBlueCooperS
 Post subject: Re: Impulse tacho rvi
PostPosted: Sun Jun 29, 2014 9:39 pm 
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998cc
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Joined: Sun Nov 06, 2005 5:41 pm
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Location: Adelaide
I have a smiths inductive loop tacho (after market, not clubman style) with A+ electronic ignition.
Works well with no mods.
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Mick
 Post subject: Re: Impulse tacho rvi
PostPosted: Sun Jun 29, 2014 9:59 pm 
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Location: Under the bonnet son!
No problem at all on SimonBBC and also another identical on a Accuspark. The Accuspark is for low ohm coil.
Both were running on old RVI Smiths Tachos.

The Simon BBC now runs an Accuspark Stealth Blackbox, also without any problems from the RVI Tacho.

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All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.
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drmini in aust
 Post subject: Re: Impulse tacho rvi
PostPosted: Sun Jun 29, 2014 10:29 pm 
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I had an RV1 on Barney with a Pulsar electronic dizzy. It worked, but wasn't accurate. Worse on hot days. Could have been the old tacho- components ageing.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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SuperCooper
 Post subject: Re: Impulse tacho rvi
PostPosted: Sun Jun 29, 2014 10:44 pm 
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Good to hear. Eng has convertible minis elec ign mod and a gt40 coil.

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SuperCooper
 Post subject: Re: Impulse tacho rvi
PostPosted: Sun Jun 29, 2014 11:31 pm 
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Joined: Mon Feb 05, 2007 10:53 pm
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SuperCooper
 Post subject: Re: Impulse tacho rvi
PostPosted: Sun Jun 29, 2014 11:32 pm 
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drmini in aust
 Post subject: Re: Impulse tacho rvi
PostPosted: Mon Jun 30, 2014 7:53 am 
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Try it, you won't hurt it... :wink:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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