http://www.thegsresources.com/_forum/showpost.php?p=807063&postcount=16
ORIGINAL POST Continued:
I had a request for more information on this modification. I have never done it but plan on doing it for my GS1100ED. I did confer with RapidRay as he originally told me about this modification. His preferred method is the first option. My initial guess at how he did it is the second option which I think would also work. Any comments welcome.
4/8/2015: I have eliminated Options #3 and #4 and added an Option #5
Modified 4/26/08 to make things more automatic using Option #3 a modified coil relay mod.
Modified 4/27/08 to make things more automatic using Option #4 a modified coil relay mod (now the front runner solution;parts on order).
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Edited 4/27/08 SUMMARY:
Option #1 OK I have tried documented my best understanding of RapidRay's starter button anti kick back modification.
That is Option #1 and I'm sure it works. I think the wiring modification needs to be done somewhere in the harness and probably in the headlight bucket because you need access to the hot lead going to the ignition key (before it). The main problem I see with this #1 option is someone (perhaps a small kid) can crank your bike even if your ignition key were off.
Option #2 : I showed near the end of this thread an alternate implementation of option #2 that is entirely contained within the right hand switch. This option retains all of the stock operation with the exception that now you can crank the engine with the kill switch off but both still require the ignition key to be on.
ELIMINATED: While Option #3 did work most of the time provided I cranked long enough (at least two revs), in playing with option #2 I ca n achieve smoother startup and less starter noise by properly controlling the kill switch than I ever could with option #3. Basically there are several times when the engine is being asked to coast into the compression stroke (when starter button comes off) and it slows the engine to the point it seems to not start and almost kick back. Bottom like the starter needs to be driving the engine forward in this instance otherwise there is a high probability of kick back.
ELIMINATED: Unofficially Option #4 I'm still considering Matchless's idea of a delay on relay if I can find one at a reasonable price. I'm figuring a 1 second (approx) "make delay relay", this might provide a good compromise/protection as this precludes the ignition from coming on before before the 1 sec. Otherwise it acts exactly as stock. This could be combined used to replace a single relay coil modification or other combination contemplated. I might still try this. This would make startup dummy proof plus provide the full voltage to the coils.
Interim Conclusion:
If #4 works there is nothing wrong with having #2 and #4 in place but then #2 is probably not necessary. If someone can do #2 (re solder) they probably are contemplating #4 as well. The primary reason to do #2 over #4 is cost; #2 doesn't cost anything but time and a small piece of wire. #4 will give automatic anti kickback and enhanced ignition voltage in one modification.
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•This modification and associated engine start procedure is recommended for any motorcycle, but especially for any high compression engines.
•The typical stock ignition/starting system is wired in series so that ignition key, kill switch, starter button all need to be activated to get the starter to move.
•A race condition exists then between the starter motor turning the engine over fast enough to avoid the ignition firing , and engine compression of the engine, kicking back the motor and damaging the starter clutch.
•This modification allows ignition coils and starter to be controlled separately , so the engine can attain sufficient speed from cranking that the compression can NOT kick back the engine on startup. This should help avoid most starter clutch damage.
•Two options are provided depending on how you want your switches to work.
Note: Adobe PDF reader is required to look at the link. Let me know if this causes difficulties; this is a pretty common media for file sharing.
•Write up Posplayr 4/25/08
UPDATED 4/8/2015 to reflect new Option #5
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