diferent kind of flat spot

[dransy]

right my bike is fully deristricted and has powerband *rs 125*, i was just woundering if i will need my carb jetting for this as its just box standard jets?
also i have a flat spot at 5-6 thousand i know ur all gonna say do the cdi , i checked when i get the bike it had already been done so i scraped out the silicone and re-did it , its fine but when my bike gets above 64degrees it comes back and its propper bad does my head in
any ideas?
cheers all
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Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles

[VFR400UK]

5-6k would be just as the mid range (what mid range, its a two stroke! ) kicks in, and the pilot jets are still going.

Setting up your mixture screws, will help out more than you might think. Otherwise it would have to be taking the carb appart and checking for blockages etc.

Jet size increase will only effect what it's like in the powerband. Mid range is all pilot jets and needles

[dransy]

ah right cheers
thing is when i alter the mixture and needle i can never get it right and if i get it right it runs too hot or i get it to lean or to rich but at a decent temp
maybe i should get a pro to do it?
____________________
Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles

[dansuresh]

whats that thing you have to do with the CDI unit?

My RS125 seems to have a flat spot between 6-7k revs.


seems to sort it self out by reving right through the gears a couple of times but really pisses me off!

Thanks

Dan

[dransy]

u carv into the back of te cdi unit until u reach 2 metal prong things then u fill it in with silicone
____________________
Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles

[dansuresh]

thanks..a stupid question now cos im too lazy to look for it but where exaclty is the cdi unit on the bike?

Thanks

Dan

[dransy]

under the pillion seat the black box right at the back
____________________
Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles

[dransy]

this is it
and as u can see u carve it out till u get 2 the emtal thingys then fillt it with silicone
____________________
Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles

[dansuresh]

cool

thanks!

Dan

[Keith]

May seem like a silly question, but after you cut the hole in the CDI, did you actually break the bridge which causes the ignition retard before sealing it back up?

Also, playing with the mixture can be a dangerous game and a rather expensive one. If you've fitted the power valve unit, you dont need to adjust the mixture as its set up to run full power and not restricted.
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Aprilia RSV Mille R Edwards Replica - Aprilia RS250 - Suzuki GSXR600 Supersport Race Bike