Identification

I think I would prefer to revamp the whole ignition system so that I know that the most up to date components are running the bike.

As for the screw thread I will need to get it fixed but I don't think the cover will fall off as it was very tight doing it up.

The worst part is that I know it may take a couple of months to get all the parts and then have the work done. No Laverda riding in that time except to get the new tyres.

Frank
 
Reason I asked is because I didn't know. Sunlight contains the whole spectrum including infra-red, and it's probably a brighter source than a little LED in a box. It's not that much of a stretch to wonder about its affect on an optical trigger. Now I'm wondering why it doesn't bother the optical system. Do they still work in direct sunlight?
[/quote]

When installing my optical Sachse ignition, went for a test run...... thought id be smart and leave the cover off for ease of adjusting adv/ret......... well headed due west late one sunny arvo and all was going well until I got off the Freeway to do a Ewee and bang pop and fart she did as the sensors got an eyefull  :o :o of the arvo sun  :-[
Enough to make me stop get off and say WTF ? scratched me head for a couple of minutes !! pointed the bike back East and away she went  :D hasnt missed a beat since.... with the cover in place  8)
 
Dellortoman said:
I don't watch daytime TV.  I'd rather annoy you guys by posting dumb ideas.  :D

Reason I asked is because I didn't know. Sunlight contains the whole spectrum including infra-red, and it's probably a brighter source than a little LED in a box. It's not that much of a stretch to wonder about its affect on an optical trigger. Now I'm wondering why it doesn't bother the optical system. Do they still work in direct sunlight?
Click to expand...

I'm not sure about this application, but remote controls typically modulate the IR beam, I think at 40kHz, which is readily distinguished from the other electromagnetic emissions present at the detector.

bazzee
 
Thanks Hooksey. It seems a little less like a stupid question now.  :D

Edit:
Bazee, you posted while I was typing.
Remote controls need some kind of modulation to transmit all the various functions.

All an ignition trigger has to do is distinguish light from dark, so I can't see any reason for it to be modulated. From what Hooksey said, I reckon direct sunlight must overwhelm the optical sensor so it wouldn't see the signal at all.

All of this is just speculation on my part. I don't know much about how these electronic doohickies work, but I like to think about the physics of it.
 
Wonder how an optical trigger would be affected by a timing strobe (dunno)
 
Legs said:
Wonder how an optical trigger would be affected by a timing strobe (dunno)
Click to expand...

Silly answer, but I don't think you will need to find out.
 
Volker Sachse produced an ignition system early in the piece with 3 x Optical triggers for the 120 and because of the actual geometry of the triggers he selected to use they are affected by sunlight
I have never tried a DMC with the cover off as I don't use DMC systems at all, prefer my own ignition systems based on Hall Effect triggers and the Ignitech box but I would hazard a guess that Piet is correct in saying the DMC Optical set up is not affected by sunlight due to the different geometry of the unit itself
DMC has the Optical trigger partially shrouded by the shaped rotor so is in a dark area, sort of

Sachse system had the Optical triggers front and foremost on the board with a flat cut out disc so sunlight has an affect on those systems
Volker changed to using Hall Effect triggers in the end but not because of the sunlight issue



 
You must log in or register to reply here.
Back
Top