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Post by JerryScript on Nov 21, 2013 1:29:06 GMT -5
You can see the mods I've made to my scooter in my signature. I've very happy with them, with one exception, I sometimes experience bog when starting my acceleration out of a curve. The throttle is very responsive at all other times, and the Koso variator and sliders give me smooth acceleration that keeps up with most cars, and great top end.
From what I've learned here, I think a step up on the contra spring is the answer. If I understand correctly, a stronger spring should push the belt back up in the clutch sooner, helping to prevent the bog I'm experiencing. Am I on right to change the contra spring, or do I need to drop down a gram on my sliders?
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Post by jjoshua20213 on Nov 21, 2013 9:26:14 GMT -5
Can you describe the bog more? It could be a misadjusted carburetor bog or a heavy roller weights, slow accel type of bog.
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Post by JerryScript on Nov 21, 2013 14:23:32 GMT -5
I'm pretty certain it's not carb related, I have instant throttle response at all other times. It occurs when I take a turn, and decelerate faster than the engine would have on it's own, then attempt to accelerate out of the curve. Just a bit of hesitation, which makes me think the contra spring isn't strong enough to push back.
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Post by alleyoop on Nov 21, 2013 14:40:08 GMT -5
It is a carb problem if it bogs, has nothing to do with the springs, think about it you slowed down to make the turn and then hit the throttle allowing a lot of air in all of a sudden to much air not enough fuel at that moment with the throttle wide open. Raise your needle 1 notch and give that a shot. Or give the Carb a 1/4 richer.
Alleyoop
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Post by Mainely Scooters on Nov 21, 2013 20:44:16 GMT -5
From what I've learned here, I think a step up on the contra spring is the answer. If I understand correctly, a stronger spring should push the belt back up in the clutch sooner, helping to prevent the bog I'm experiencing. Am I on right to change the contra spring, or do I need to drop down a gram on my sliders? They both will do roughly the same job. A stronger torque sheave spring will compress the rear clutch. It will also put more stress on the belt and it will affect the acceleration curve differently than the rollers/sliders. The key is experimentation as there is no real way to know. Every scooter is different. If you are bogging on the turn exit, you can try to keep your RPMs up on the last 1/3 of the turn. However you will put more wear on your brakes to keep your speed in check. Its hard to diagnose the true cause without hearing myself what is going on. Greg Mainely Scooters |
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Post by JerryScript on Nov 21, 2013 21:06:37 GMT -5
Thanks guys! I'll try raising the needle first, if that doesn't help, I'll try a stiffer contra spring and experiment with different sliders. Appreciate the help!
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Freshman Rider
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Post by Mainely Scooters on Nov 21, 2013 22:47:26 GMT -5
Most important is to LISTEN to the RPMs as you round the bend. If they drop you need to raise them to get in the power band. Your upgraded motor *should* make its best power around 8k, but of course it depends on many factors.
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..BAD TO THE BONE..
