Re: Reedspeed variable CDI
Posted: Tue Nov 18, 2014 8:04 pm
kheper is muppets choice
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Never said it was, you still seem to think im anti the kheper, im not, I am just saying it's probably overkill for many scooterists. The fact there are ready made curves takes the work out of it im quite sure, but that's no different than the agusto or mtech to be fair.eden wrote:if the kheper failed I would put my standard CDI on that's in my toolbox, take the flywheel off, set stator to the 16 degrees mark and carry on.
As far as setting the Kheper up goes, There are ready made curves to use if you don't want to make one yourself. its not rocket science!
The point of having a programmable ignition is that all engines are different, one curve that works well on one engine wont necessarily work well on another engine. that's the problem with adv/retard systems with a few set curves and is why I never ran an adv/retard system on any of my motors till a reasonably priced programmable one became available.
I never said it was hard at all, you're the one being defensive of the kheper and how wonderful it is, again, Im not saying it isn't, im sure its got its place, but your previous paragraph on setting it up just shows its weaknesses.Its very easy to programme the curves, you just drag your curser. al you need to find out what curve would work is a dyno graph, tbh you don't even need that if you understand how and why an adv/retard helps your engine, just make a curve and try it, then make another and try that until one is found that works best. That method can be used using the curves that are already with the kheper, try one then try another and if you find that the motors works better at lower rpm with one and better at higher rpm with another you can then make your own curve which has the parts from the existing curves that you find work with your engine.
It really isn't as hard as you obviously think it is.
The difference is that once you have ran it with the ready made curves and learnt what the differences are that you are not stuck with them, you can then programme your own to improve your motor even more!Donnie wrote:Never said it was, you still seem to think im anti the kheper, im not, I am just saying it's probably overkill for many scooterists. The fact there are ready made curves takes the work out of it im quite sure, but that's no different than the agusto or mtech to be fair.eden wrote:if the kheper failed I would put my standard CDI on that's in my toolbox, take the flywheel off, set stator to the 16 degrees mark and carry on.
As far as setting the Kheper up goes, There are ready made curves to use if you don't want to make one yourself. its not rocket science!
Donnie wrote:
The point of having a programmable ignition is that all engines are different, one curve that works well on one engine wont necessarily work well on another engine. that's the problem with adv/retard systems with a few set curves and is why I never ran an adv/retard system on any of my motors till a reasonably priced programmable one became available.
Again, while the kheper may have lots of adjustment, your downplaying some of the other systems out there, ok the agusto only has a few set curves, but it's a little disingenuous to say that about systems like the mtech, 16 is more than a few to choose from and I'd be very surprised if there are any scooters out there running one that couldnt find one to match.
That is the case for all the advance retard units, you can blow your motor up if you choose a curve that isn't right. to fit any of the other advance retard units requires the same "knowledge" needed to fit the kheper, which is the point ive been trying to make all along. if your going to fit an advance retard why pick one that doesn't give you a perfect curve?Donnie wrote:I never said it was hard at all, you're the one being defensive of the kheper and how wonderful it is, again, Im not saying it isn't, im sure its got its place, but your previous paragraph on setting it up just shows its weaknesses.Its very easy to programme the curves, you just drag your curser. al you need to find out what curve would work is a dyno graph, tbh you don't even need that if you understand how and why an adv/retard helps your engine, just make a curve and try it, then make another and try that until one is found that works best. That method can be used using the curves that are already with the kheper, try one then try another and if you find that the motors works better at lower rpm with one and better at higher rpm with another you can then make your own curve which has the parts from the existing curves that you find work with your engine.
It really isn't as hard as you obviously think it is.
Putting aside the simple stuff like needing a dyno run (quickest way to set it up) the biggest weakness is one you pointed out, knowledge.
I agree 100% with that statement, but as ive just said, the same applies to any advance retard unit, NON of them are plug and play and ALL of them can blow your motor up if you don't know wtf your doing.Donnie wrote: And there's the rub, many of these after market products are marketed to the general scootering public as improvements, upgrades etc but too many people literally think these items are plug and play / fit and forget. I mean forums are full of people that dont have the knowledge to do the more simple stuff like jet a carb never mind fit a kheper and try some of the curves, much less have the knowledge to test their own curves and hope the engine doesn't go bang :-/
???eden wrote: