Derbi gp50r

ugly1 · Derestricted Danger Joined: 18 Jun 2007 Karma :

i got a derbi gp50r and got a little problem with it

starts 1st time everytime without choke not matter the weather

in netural it revs spot on and ticks over nice and perfect, but when i shove it in to 1st and open the throtle it stutters until it reach's 6-7000 rpm then it fly's
this happens in every gear except 5th were i can do a steady 30mph no problems but as soon as i wanna open it up and drop it down a few gears it stutters untill reached 6-7000rpm

anyone come across this problem before ?

cheers

tristan · Crazy Courier Joined: 03 May 2007 Karma :

MaybeGuy · Super Spammer Joined: 12 Mar 2007 Karma :

low end lack of power.
bad powerband?

either air or fuel set wrong.

have you been a retard and drilled holes in the airbox to make it sound nice? if so, there you go.

maybe a good carb clean would do the trick though.
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!! Mr. Green

Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

ugly1 · Derestricted Danger Joined: 18 Jun 2007 Karma :

cheers will do that when i get chance

MaybeGuy · Super Spammer Joined: 12 Mar 2007 Karma :

its most likely the jets if you have an aftermarket exhaust on there.
has it been de-restricted? if it has, chances are it wasnt done properly, take it back and go OI BITCH!!! CARB ME!
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!! Mr. Green

Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

ugly1 · Derestricted Danger Joined: 18 Jun 2007 Karma :

there is an aftermarket exhaust on it but it was ok before

MaybeGuy · Super Spammer Joined: 12 Mar 2007 Karma :

in that case, most likely shit in your carbs. take them off and clean them inside. (bottom cover with the nipply thing on it).
concentrate on the tubes an all that.

maybe ur fuel filter is clogged? but that would usually be indicated by high rev chugging rather than low.
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!! Mr. Green

Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

ugly1 · Derestricted Danger Joined: 18 Jun 2007 Karma :

ok cheers for info will let you know