Flat spot?

[yorkie_chris]

Around 4500rpm if you hold it there it's not smooth at all, sort of hunts for the right revs to stay at, also when you put the power on it pulls hard up to 4500, then hesitates, then pulls hard again (not for long though, damn 33hp) up to about 7000.
Is this what is termed a flat spot? seems lean to me, its not massively bad, but still irritating.
Its an '02 naked with 33bhp sliders and a fuel SS oval can with no baffle.

Considering shimming the needles or maybe jets (doesn't seem to need jets to me though..)

Ideas?

Chris

[NedSVS]

If you have the baffle the easy thing to do is put it back in! If it is lean then this will probably improve it. You may like the sound but it is probably detrimental to the performance without rejetting, and it's not worth rejetting whilst it's restricted to 33bhp.

[yorkie_chris]

When I come to remove the 33hp kit will this throw the jetting out again?

[NedSVS]

When I come to remove the 33hp kit will this throw the jetting out again?

Possibly, infact I'd be surprised if it didn't, and you might also consider a performance filter at that time (ie when you remove your 33bhp kit). I just dont think it is worth your time and trouble as the performance gain will probably be absolutely minimal for the amount of effort involved. I'm sure your bike will still sound much better than with the standard can even with the baffle in, and also be nicer to ride. Try the baffle back in - it is so much easier than messing about with jetting.

[yorkie_chris]

Yeah good point, will give it a go and see how it feels.

I'll tell you one thing that will not sort it out:

http://cgi.ebay.co.uk/TRE-for-SV650-...QQcmdZViewItem

Free to a good home and complete rubbish,

Dan

mine has the same prob, but mines standard with full power, been out on it tonight and sounds like the same prob.

was fine last week just got it back its had the chain tens done.

well i say mines full power i dont know not had it long how can i tell?

[yorkie_chris]

Mine with 33 takes a lonnnng time to get past the ton (only on a private road though...)
Standard should get up to those speeds much quicker.

[dizzyblonde]

stop it young man. You keep up wid me on a 33. why do you fellas get so obsessed with going quicker, faster. tut tut. go to a corner and tell yourself orf!!!! and yes its a 33 so will run out of puff at a certain rev speed whatever, buut mine won't go nowhere at full power anyway, and you'll still be able to toast me....tehe

[yorkie_chris]

Originally Posted by dizzyblonde

stop it young man. You keep up wid me on a 33. why do you fellas get so obsessed with going quicker, faster. tut tut. go to a corner and tell yourself orf!!!! and yes its a 33 so will run out of puff at a certain rev speed whatever, buut mine won't go nowhere at full power anyway, and you'll still be able to toast me....tehe

I'm not after more speed, if I wanted that then I'd build misen a nitrous kit

It's just smoothing out the midrange I'm considering.