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Ignition timing for Mk3 with Lucas Rita

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A little diversion from my normal query.   With the crank slot used to show position on firing stroke 28deg BTDC; do you then line up the trigger device with the “reluctor” and that’s it?   For a points setup if makes sense but I’m a bit confused how the electronic gets set same way.   Strobe is on order....

Cheers

Jon

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There is a little loose tab that came with the system.  It's probably hidden in a box somewhere.  Easy to make another.  I'll see if I can dig mine out later to measure it.  This sets the gap (about 5mm) between the tip of the reluctor and one of the two tips on the rotor.  I always have to look up the instruction sheet to get it the right way round.  When I can't find the instructions, I google for them!

 

... now it all makes sense with a 5mm strip.  I also found a copy of your document at:

(https://britishonly.com/partsbooks/pdf_Files/rita/ritacombined.pdf).

The bike was bought with it fitted and after a little work on oil leaks I was left with a loose reductor.  I couldn't work out if you set it to TDC and ignore the 28 degree slot or it calculated the 332 degrees (360 - 28) from the last impulse...

That will be tonight's entertainment.

Thanks David

Best regards

Jon  

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Hi David, I have a Rita on one of my bikes ,but no information. Is there any way I can get a better copy?, Don't mind paying any x's,  Bob.

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I could try scanning the two pages I photo'd on my phone camera.  They are already photocopies after the original was partly eaten by slugs!  Hence the gaps...

 

 

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Robert;  If you open the link I sent to David in the response there is a 30+ page document on installation/testing of a Rita for several models of machines, singles, twins, triples and even  Magneto replacement.

 If its not opening I'll email them to you... and some others I found whilst should be working....

 

How's he Winkers???

Cheers

Jon

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It's never (yet) given me the slightest problem.  It can't go to full advance on a flat battery because the advance curve is effectively mechanical because it depends on the speed of approach of the rotor to the reluctor.  I think Al Osborne described it on here once.  He seems to be able to repair them if you are unlucky enough to need it.

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Thank's Guys.  I'm winking ok Jon,  just a few jobs ,fix cracked tank bracket, new oil pipes, seat fastener, back wheel to replace ,fit tanks fill oil,fit exhausts,start up,run a bit then remove tank and tighten up head. Run for 50 miles and do it again a couple of times. Easy peasy !!.

 


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