Laverda Mirage Sachse ignition headscratcher

S

simonwhittaker

New member
Location
Bath, UK
I have bought a Laverda Mirage 1980 needing some love, my first triple. It is has a Sachse ignition on it, but loose and in boxes.

I have a set of Sachse Laverda instructions but it doesnt really match what is on the bike.

The three 'pillar bolts' in pic 2 are to mount the circuit-board?. Which mounting holes do I use, or doesnt it matter? Onviously the ignition wire will roughly dictate its orientation. The instructions show two mounting bolts, but they arent pillar-bolts, like I inherited

Sachse kits generally have a red LED on it to help static time them, this one doesnt seem to.

My central silver 'S' magnetic disk is different to the one in my Sachse Instructions which seems to moiunt the trigger on the crank nose, and my parts are slightly different. Mine also looks to be damaged and slightly bent

There are three grub-screws, that are PROBABLY to lock the disc to the crank via the three radial threaded holes, once it is in the right place?

I wonder if the kit I have is an earlier version than what is sold now. The bike's been off the road for a couple of years.

I have emailed the always helpful Sachse but see they are on holiday currently.

Just wondered if anyone on here recognises my set-up and whether I should persevere with it, or scrap it and start again (at huge expense)
 

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Hooksey, you have the earlier version of the Sachse set up, Optical triggers

Simon, your Sachse is the latter Hall Effect set up but is damaged by the looks of your photos
Looks like one of the Grub screws has come out which has damaged the only trigger shown in your photos
2nd trigger is 180 degrees opposite right where that white peg thing is so cannot see that top trigger

What has happened to the stainless crank adaptor?
Looks like it has been attacked with something

If you have the Sachse box then wait for them to open, you can buy just the trigger board from them, not expensive
 
Thank you this is really helpful...it does look damaged. I think a grubscrew came out and trashed the circuit board. No idea about a stainless crank adaptor.
The current Sachse kit:
www.elektronik-sachse.de

Digital Ignition ZDG 3.23 for Laverda 180-II

Digital ignition for Laverda 1000-180° series II, replacement for the Bosch BTZ-ignition. (Original Bosch pickup on the left side of the engine). Note that this set does not fit on the series I Laverdas (with the pickups on the right hand side in...
www.elektronik-sachse.de www.elektronik-sachse.de
The instructions well hidden (look for 'Installation' next to description) in the link above, talk about a red LED, but there doesnt appear to be one on my circuitboard or the one Sachse sell now, unless its so tiny Im missing it....
 
Once you power up the system and then move the South pole magnet past the trigger a LED light will come on next to that trigger
There are two magnets in the Rotor, South pole and North pole, Hall Effect trigger is a switch, South turns it on, North turns it off

I make my own systems these days but use the same principal but I use Ignitech boxes as the Ignition controller as they are to me a better option, fully programmable so can design your own ignition maps

Hope that makes sense
 
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It is there, they are very small
Power the board up, have to remember what the Sachse colour code is
Use a 12 volt battery although a 6 volt battery would be better as board actually runs on 5 volts when connected correctly

Brown to positive
White to earth
Pass the S magnet under the trigger, LED will come on
Use N magnet to turn it off
 
Thank you super helpful. Its actually all plugged in and wired up, just hanging off the engine!
the battered disc is marked with an S, just not seen an N mark. Ill have another look tomorrow
 
Same setup as my srs2 mirage. Uses 2 of the long bolts (top & bottom in the casing). The damaged centre will be a problem as the ally disc fits tight on it but has to turn to adjust the timing. I'd try and assemble it ,see what works and hope sachse will sell you the parts needed. You can check the box is working without the pickup by using setting 0 on the flimsy little dial on it . Good luck .
 
If Sachse will not supply the parts I can supply them
Our system uses same design and parts are interchangeable
Main difference with our set up is we use the Ignitech ignition module
 
Well some good news is the LEDs light when I put the igniiton on at least. I seem to be missing the big washer from the kit, with two holes in it. Not sure, even after reading the instructions, what that does..
Tony Reid, Ill PM you
 
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