Hi guys, a tricky question for you: 6th gear, then I reached 8.000 rpm with my F3 giving half gas and after that I've gone full throttle.
rpm grew up quite slowly and when I turned the gas 1/4 turn back, my bike gave me a power kick in the ***. I tried several times and it seems to hang at full throttle, but turning a little back the gas the engine run fast.
What do you think about? Carbs cleaning needed?
Thanks!

 

Is it in only 6th gear or high RPM's? Gears don't really coincide with the carbs working.More or less, the carbs don't know what gear you are in. But the engine RPM's and fuel intake would let you know if it is a fuel issue. Maybe be the fuel pump went out and not pumping at high RPM's. You will get the low RPM's but not the high.

 

The same on every gear. Is not a problem of rpm, but it's something involved with the throttle response. If I turn the gas 3/4 the bike pushes strong and clean and shrtly reaches red rpm area, but if I go full throttle with gas, it loose strenght and rolling back the gas it recovers acceleration. Hope i've been clear... sorry for my english

 

i dont know if i have the same "problem", but i feel like ive noticed a similar situation..whereas pegging the throttle, and while slowly rolling off, feeling the bike continue to speed up stronger..

 

Yes will.bass,we have the same problem.You have described it better than me!

 

when my bike was running rich it did this but since having a gas flow and dyno setup i can go from 0-100% throttle and the bike will just give instant power...and wheelies in 3rd

 

What do you mean for "gas flow"? 3rd gear wheelies?????? Which mods did you do on your bike?
For this winter I planned to install arrow pipes and a Dynojet stage 1 kit, perhaps I will radically sove the problem, but I'd like to understand what's goin' on now

 

Okay erm the mods are -

Engine-
Gas flow to supersport spec
Inlet camshaft on exhaust side
Full 4-2-1 exhaust system
Stator removed (0.5 bhp gained)
Custom jetkit and dyno'd

Frame-
3kg dropped off the subframe
Light weight fiberglass fairings
520 chain conversion

Brakes-
Lighter radial master cylinder
Heavier cast iron disks up front
Braided lines

Geared 14 tooth front and 46-48 tooth rear

I managed a 3rd gear power wheelie trying to catch a pesky supertwin it was only an inch up but its still a wheelie as i snatched at the throttle at oulton i managed a second gear power wheelie up to about half 10 that was scary

Back to my point, with the engine mods i have if i were to ****** at the throttle it will flip instantly in 1st or 2nd in any higher gears it just accelerates like mad

Before these mods it was standard but running rich and if i grabbed a load of throttle it would bog then start accelerating but not too quick better at 3/4 throttle.

Sounds like fuelling to me but i paid £160 for my dnyo and jets that included the fuel and was worth every penny a friend did the jetkit option and gussed and his bike will never pull as hard as mine does

 

Ok... i proceed with dynojet kit, dyno tune and full pipes and then i'll test the result

 

should be improved with just a decent re-jet depends how good the dyno technician is though to be honest were you based?