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Old 07-14-2007, 03:32 AM   #41
moto_psycho
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I still wanna see some dyno runs from this i will give it a try 2moro and let you lot know

and BRkat, go on google and search for free image hosting, theres millions
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Old 07-20-2007, 04:48 PM   #42
MikeBetz42
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Default Re: Spark Advance

Quote:
Originally Posted by Daves Kat
I am wondering if this can be done the same way on a '03 Kat 600 with Cal. emissions? The initial timing on the cal model is 4 degrees instead of 10? I also cannot see the pics. Thanks, Dave
Anyone know this answer?? I have a Cal model as well...
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Old 07-20-2007, 04:48 PM   #43
MikeBetz42
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Default Re: Spark Advance

Quote:
Originally Posted by Daves Kat
I am wondering if this can be done the same way on a '03 Kat 600 with Cal. emissions? The initial timing on the cal model is 4 degrees instead of 10? I also cannot see the pics. Thanks, Dave
Anyone know this answer?? I have a Cal model as well...
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Old 08-26-2007, 12:25 PM   #44
mharrison
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Default Re: 1mm per 1 degree? not by my measurements

Quote:
Originally Posted by BRkat
Obviously this has been tried and tested... but if there's ever anything I've learned, its measure twice cut once. So I checked the claim to 5mm for a 5 degree advance, and that's definitely not the case by what I figure.

With the protractor on top, 5 degrees is about 5mm at the outside edge of the plate, but where the holes are drilled, its only about 3mm to get a 5 degrees difference.

I took some pictures with the protractor and ruler resting on top... If someone wants to see them, PM me and maybe you could host them / link to the picture too if you think its worthwile at all.

-BR
So, has anybody else with the necessary math skills verified this?
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Old 08-27-2007, 05:57 AM   #45
grumpyoldgit
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Default Re: Poor man's ignition advancer. Do it yourself

Quote:
Originally Posted by meanstrk
Well the advance should be 3-5 and 1 is almost exactly 1mm on the edge of the plate. So enlarge the holes about 5mm.
From this it would appear that meanstrk agrees that 5deg is approximately 5mm on the plate edge, therefore if you elongated the holes by 5mm and set the screws to the maximum deflection you would indeed be more than 5deg advanced.

However as he himself states that he uses 3deg advance I would surmise that the whole 5mm elongation is not required and that an elongation of 3mm would be sufficient to get 4.5-5deg of advance.

I have not physically measured this part and/or the deflections but from a purely mathmatical trigonometry analysis the above would seem to be correct.
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Old 09-27-2007, 08:52 AM   #46
LORDMETAL
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i did this last light and runs real good, but when i started it today for the first time it back fired, NOT a big bang but more of a pop.

now is this ok?and will it do this on every cold start?
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Old 09-27-2007, 09:13 AM   #47
meanstrk
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You may have it a bit more than 5deg if that is the case. Mine has never done this.
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Old 09-27-2007, 10:29 AM   #48
LORDMETAL
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thanks,i will have to go back in see
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