2k-2/2k-3 Questions

[F_G]

A couple of questions for you kukosan experts out there.

1. Is there a difference in flywheel weight between a 2k-2 and 2k-3 ignition?

2. What is the difference?

This seems completely backwards to me, but if what everyone is saying is true with a 2k-2 wires exiting at 10 o'clock and a 2k-3 exiting at 2 o'clock, it appears my '08 300 has a 2k-2 and my son's '09 250 has a 2k-3. Can they be swapped? He's looking for little more snap and less snap would never hurt me, plus I'm looking for a little more lighting capacity. Anyway, what does everyone think?

Thanks

[eff]

Not an expert here, but all my reading here says - Yes they can be swapped. I'm not sure what the weight difference is.

I have the 2k-2 and have wondered what going to the 2k-3 would be like. If one fell into my lap like you, I'd probbaly give it a try.

[slocalspode]

I did the swap on me XC300. Turning it into an EC300.
I noticed very little difference in snap or flywheel mass.
But, if you listen to my GF. I am an insensitive slug.
Incapable of sensing even a major change in attitude.
Jeff

[gasser]

The ignitions are interchangeable and will definitely give a different feel to the power of the bike. The heavier (and milder) ignition has wires that come out of the motor at 2 o'clock. In my experience it will soften the hit more than the lighter ignition with a 10 oz. flywheel weight.
I'm a slow "C" rider and I prefer the heavier ignition on my 300 for the tight trails I ride. On the 250 I'm happy with either ignition as long as the lighter one has a flywheel weight added. Faster riders probably prefer the lighter ignition on both the 250 and 300 and add weight to suit riding conditions. - Ken

[MattR]

Here is a tech article discussing the effects of flywheel mass (moment of inertia).
http://www.gasgasrider.org/html/flywheel_effect.html

F_G,

Like Ken mentions, you can add a flywheel weight to your existing 2K-2. The nut is removed and a new nut with integrated weight is installed. Your 2K-2 ignition remains as-is (i.e, no flywheel puller is needed).

A 10 to 14oz weight makes a noticeable difference in my opinion. However, my '07 EC250 has the 2K-3 and it "lugs" down very low without stalling compared to my old '01 XC250 with 2K-2 + 10oz weight.

[F_G]

Can anyone tell me what the difference in weight is between the 2 ignitions?

I like my 300 just fine, I don't feel the need for more flywheel effect, it's my son that would like a little more snap for his 250. I would like a little more lighting capacity, if a little more flywheel weight is the cost, then so be it, lighter flywheel for him, more electrical juice for me. If I can kill 2 birds with one stone it's a win/win situation.

2k-2 flywheel weight?
2k-3 flywheel weight?

Isn't it a bit odd that GasGas would put a 2k-2 on an EC300 and a 2k-3 on an EC250 Racing?