Laverda 100 Electronic Ignition System

B

Benbecula

New member
Location
Western Scotland
Hello,

These guys will make an electronic ignition system for a Laverda 100.

Elektronik Sachse MHP GmbH & Co. KG. contact via info@elektronic-sachse.de

Price of 242.14 to the UK.

Best regards.
 
Why?
Points were ok for Milan to Taranto, 1600 km at racing speeds non stop.
11 000 revs on the more highly tuned machines.
Should be ok for old men pottering about.

Paul
 
no change here then? eh Paul
what I would like to know is how are you going to fit points on your recently acquired triple

CLEM
 
CLEMTOG said:
no change here then? eh Paul
what I would like to know is how are you going to fit points on your recently acquired triple

CLEM
Click to expand...

I have a Redax Ignitech and alternator kit on the shelf for that.

It won't be seeing as much road use as the twins anyway.

Paul
 
Thanks Benbecula,

I think this topic has been discussed on the forum before, with the same polarised opinions  :D

Piet completed the Milano-Taranto on his 100 (I seem to remember) and was fed up with having to adjust the points every day as they went out of adjustment so easily. Please excuse me if I've misquoted you Piet...

The points are at the very end of a really long shaft that runs from the right hand case through to the extreme left of the left hand case and carries the inlet cam, oil pump and points. It runs in two bronze bushes which tend to wear, as does the shaft. It wouldn't be unreasonable to assume that the wear on the bushes and shaft allow the shaft to whip around - the points at the very far end are possibly given a bit of a battering at high revs and go out of adjustment.

Notably, the factory engines that competed in the endurance races ditched the bushes and were fully equipped with roller bearings. Perhaps that helped to maintain the integrity of the settings?

I respect Paul's opinion and wish to stay original but for me, I think the trigger on the Sachse will be easier to set up and less liable to go out of adjustment than points, so it is on my list of improvements. It is 6V so doesn't even need an alternator upgrade.
Top spot Benbecula!!
Chris
 
chris78jota said:
Thanks Benbecula,

I think this topic has been discussed on the forum before, with the same polarised opinions  :D

Piet completed the Milano-Taranto on his 100 (I seem to remember) and was fed up with having to adjust the points every day as they went out of adjustment so easily. Please excuse me if I've misquoted you Piet...

The points are at the very end of a really long shaft that runs from the right hand case through to the extreme left of the left hand case and carries the inlet cam, oil pump and points. It runs in two bronze bushes which tend to wear, as does the shaft. It wouldn't be unreasonable to assume that the wear on the bushes and shaft allow the shaft to whip around - the points at the very far end are possibly given a bit of a battering at high revs and go out of adjustment.

Notably, the factory engines that competed in the endurance races ditched the bushes and were fully equipped with roller bearings. Perhaps that helped to maintain the integrity of the settings?

I respect Paul's opinion and wish to stay original but for me, I think the trigger on the Sachse will be easier to set up and less liable to go out of adjustment than points, so it is on my list of improvements. It is 6V so doesn't even need an alternator upgrade.
Top spot Benbecula!!
Chris
Click to expand...

Correct Chris.

What bothers me about the Sachse system is that a battery is required.  I'd like to stick to a magneto and am currently looking into adapting a system from a little scooter.  These are basically self-sufficient magnetos with a couple of charging coils, actually very much like the early triple CDI systems.

Unfortunately, my tiddler shat itself big-time.  I haven't pulled it apart yet, but it seems a valve head parted company with the stem...  I had noticed the little engine wasn't its healthy self and should have turned around and ridden home.  But I pressed on and paid the price.  I'm suspecting slipped ignition timing causing severe overheating.

piet
 
Really sorry to hear that Piet, it was a quick bike I believe.

I spent a fair amount of time looking for valve replacements for my 75 (22mm) but haven't looked for 100cc versions yet as they're bigger diameter I think.

There's an Italian firm advertising a 12v conversion on the "Laverda 50-75-100" Facebook page, but my Italian is poor so I don't know if it requires a battery or not.

Someone will eventually come up with the perfect setup!

Chris



 
chris78jota said:
Really sorry to hear that Piet, it was a quick bike I believe.

I spent a fair amount of time looking for valve replacements for my 75 (22mm) but haven't looked for 100cc versions yet as they're bigger diameter I think.

There's an Italian firm advertising a 12v conversion on the "Laverda 50-75-100" Facebook page, but my Italian is poor so I don't know if it requires a battery or not.

Someone will eventually come up with the perfect setup!

Chris
Click to expand...

Yep, it was quick.  Maybe a bit too quick for its own good... ::)

piet
 
Paul Marx said:
Why?
Points were ok for Milan to Taranto, 1600 km at racing speeds non stop.
11 000 revs on the more highly tuned machines.
Should be ok for old men pottering about.

Paul
Click to expand...

Quite so Paul. And who needs fancy modern stereo systems when the old wind-up gramophone still does a perfectly adequate rendition of Al Jolson's Ragtime Band?
 
Dellortoman said:
Quite so Paul. And who needs fancy modern stereo systems when the old wind-up gramophone still does a perfectly adequate rendition of Al Jolson's Ragtime Band?
Click to expand...

Haha
I even play acoustic guitar from time to time.

Bluetooth ignition to replace ride by wire?

Paul
 
Paul Marx said:
Haha
I even play acoustic guitar from time to time.

Bluetooth ignition to replace ride by wire?

Paul
Click to expand...

One of these days, I'm sure...

Wireless phone charging is already here.

piet
 
This won't be as helpful as I'd like, but a few years back Scott Potter installed a Sachse ignition on my 100 as part of an engine rebuild. I think at the time it was a prototype unit.  For reasons I do not now recall (thus the apology) it did not work well and he put the points back in. Whatever the problem was may have been (probably has been if they're being offered for sale) resolved but it may be worth contacting Scott if you're tempted to try it.

Eric
 
You might be struggling to find anyone who does an off-the-shelf system for a 100. So the pre-programmed advance curves of the Sachse unit may not suit your bike.
If I were you, I'd get an Ignitech. They're fully programmable so you can make your own advance curve. The hardest part will be sourcing a suitable pickup assembly, but that problem is the same whatever brand of ignition you buy.  You may have to make (or have made) a suitable stator plate and rotor for the pickup.
 
I contacted Sachse for a few more details about their ignition units.

Marco was extremely helpful; he confirmed the 6V unit needs a battery. It has no rev limiter, and a choice of three advance curves.

If you managed to convert your bike to 12V, the unit is more advanced, with two programmable rev limits and a choice of 9 advance curves.

I believe there are firms in Italy and possibly Czechoslovakia offering 12V conversions using modern equipment for the whole range of small 50's and 60's Italian bikes. Powerdynamo seem to offer a big selection, but no 75/100 Laverda yet.

Benbecula, I've sent you a PM by the way as regards your engineering work.
 
Making the bike's system 12V would be a good thing. There's a much better range of equipment in 12V such as lights, horn, ignition systems, etc.
However, if it's too much hassle to find and fit a 12V charging system, you could just get a 6-12V DC converter. Your existing alternator/rectifier (or DC generator) will feed 6V in and 12V will magically come out the other side. If originality is an issue, it's a reversible modification. The converter can be removed if you (or the next owner) want to go back to original spec, with points ignition.
https://www.amazon.com.au/DIGITEN-Converter-Regulator-Waterproof-Module/dp/B019GY2FLW

Only other thing you'll need to do is fit 12V light globes. The 6V horn will most likely be OK on 12V, just a bit louder  :D
The 6V wiring be perfectly OK for 12V because wires are generally larger for 6V systems.

 
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