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New mappable Lambretta ignition from Charlie Edmonds......
Posted: Fri Oct 04, 2013 3:06 pm
by drunkmunkey6969
......i understand one is being brought out, it has been tested on road and dyno (and at Elvington at the last sprint meet) and is producing up to 30% more power through the midrange etc. Resulted in better top speeds on the sprint track when tested back-2-back against the previous non-mappable ignition fitted.
Anyone got more info or pictures???
Re: New mappable Lambretta ignition from Charlie Edmonds....
Posted: Fri Oct 04, 2013 3:53 pm
by rbgaz
hi monkey, could u explain for me what a mappable ignition is , cheers
Re: New mappable Lambretta ignition from Charlie Edmonds....
Posted: Fri Oct 04, 2013 5:21 pm
by DigDug
It means you can preset your timing to alter it across the rev range.
Re: New mappable Lambretta ignition from Charlie Edmonds....
Posted: Fri Oct 04, 2013 5:27 pm
by Muppet
DigDug wrote:It means you can preset your timing to alter it across the rev range.
how

Re: New mappable Lambretta ignition from Charlie Edmonds....
Posted: Fri Oct 04, 2013 5:40 pm
by drunkmunkey6969
rbgaz wrote:hi monkey, could u explain for me what a mappable ignition is , cheers
In laymans terms...
Standard ignitions fire at a fixed point...whatever the mechanic sets it at, say 17 degrees before top dead centre (17 BTDC) or 19 BTDC etc.
The currently available advance/retard ignition boxes can be added to retard the ignition in a linear fashion, for example they might start at 20 BTDC and retard back 1 degree every 1000rpm.
So 20BTDC@1000rpm, 19BTDC@2000rpm, 18BTDC@3000rpm and so on.....
However a mappable ignition can go back and forth in any direction, any amount of degrees. So maybe 20BTDC@1000, 15BTDC@2000 18BTDC@ 3000 etc...any amount in any direction at any RPM.
It creates 3D maps like this:
Ignition adjustment example PS11 by
Scooterotica Scooter Garage, on Flickr
pgm-2-2 by
Scooterotica Scooter Garage, on Flickr
This all helps to broaden power-bands and extend RPM ranges effectively.
Re: New mappable Lambretta ignition from Charlie Edmonds....
Posted: Fri Oct 04, 2013 6:04 pm
by Muppet
But how do it do wot it does?
Re: New mappable Lambretta ignition from Charlie Edmonds....
Posted: Fri Oct 04, 2013 6:06 pm
by drunkmunkey6969
Muppet wrote:But how do it do wot it does?
Fairy dust and magic....
Re: New mappable Lambretta ignition from Charlie Edmonds....
Posted: Fri Oct 04, 2013 6:07 pm
by Muppet
drunkmunkey6969 wrote:Muppet wrote:But how do it do wot it does?
Fairy dust and magic....
Send me sum

Re: New mappable Lambretta ignition from Charlie Edmonds....
Posted: Fri Oct 04, 2013 6:09 pm
by drunkmunkey6969
Muppet wrote:drunkmunkey6969 wrote:Muppet wrote:But how do it do wot it does?
Fairy dust and magic....
Send me sum

The pixies have it all.....
Re: New mappable Lambretta ignition from Charlie Edmonds....
Posted: Fri Oct 04, 2013 6:10 pm
by Muppet