Derbi senda extreme, carb and exhaust

[LJColeman]

HI, i have a derbi senda extreme 2008, i have the standard pipe atm and has been de-resricted, im gettin 45mph on the clock....


I want to buy a leo vince v6 exhaust, and polini 21mm carb, if i get both and derestrict the exhaust will i have to change the Jet in the new 21mm carb ?

thanks
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Derbi Senda extreme

[cheekythomas]

Yes you will need to jet the new carb to suit its application... they cant for-read the future...

45mph clock speed is slow for a 08 senda, i guess your still running the small 11t front sprocket, not the 15t one that should now be on there when derestricted...

... so i also question if the brass plate is still fitted into the carb inlet, and if it still has the 208 atomizer and needle fitted?

[LJColeman]

hi, okay, shall i just by a range or jet's and try see which one works?

umm yeah im still running 11, will 15 make it crap acceleration though?

and no ive not done the gold plate in the carb, how do you do it? and where is the plate?

thanks for the help
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Derbi Senda extreme

[temeluchus]

[LJColeman]

How do I remove the gold plate out the carbb?

And okay so if I was to put a 14t on there wu the accrloration still be good or shall I just get a 15

is this the reason at 10,000 revs I'm only goin 45mph?

Thanks
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Derbi Senda extreme

[dobby]

remove the airbox pipe fron the carb, brass plate just pops out with screwdriver or long nose pliers, n just stick a 15t f/s on it...

int that right cheeky T

[LJColeman]

Okay ill take the gold plate off ina second. will i need to adjust the carb at all once ive done this?

and ive just ordered a 15t f/s.

thanks for the help
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Derbi Senda extreme

[dobby]

it might be wise to order the sprocket retaining washer aswell incase your the standard one doesnt fit like ones from JT sprockets....

thats if you havent already done this

[LJColeman]

Yeah I've done that.

I've took the gold plate out the carb
now but do I need to adjust the carb at all now I've done that?

Thanks
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Derbi Senda extreme

[dobby]

being as you had the carb half off did you check to see if the atomiser tube is a 208 or a 210

[dobby]

it should be a GA210 atomiser tube and A22 needle on middle notch when derestricted....

see cheeky T i still remember all that you taught me....

[LJColeman]

Guys I've took the plate out but now it's only goin 35mph and sounds like it's dying!! Any ideas???
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Derbi Senda extreme

[dobby]

take the atomiser tube out and see if it is a 208 or a 210

[LJColeman]

What tube is that?
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Derbi Senda extreme

[dobby]

its behind the main jet, to pop it out you will have to undo the screw on top of the carb which secures the throttle slider in place...

its number 4 on this diagram

[LJColeman]

okay ill do that later as cba to take whole carb off atm,

ive put the gold plate back in the carb as it wasnt running right,

does anyone know wha the standard air screw should be set at, the one undernieth the idle screw?

any help would be good
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Derbi Senda extreme

[cheekythomas]

Ah dobby, the derbi tuning gurus are once again reunited... long time no speak dude

210 atomizer, A22 needle on middle notch, 105 main jet, no brass plate, 15t sprocket and remove the exhaust resonator pipe and itll have more top speed and still more acceleration than a half derestricted bike with an 11t sprocket for sure...

With the 11t sprockets all the gears feel the same, just revs and goes nowhere

[dobby]

wooh cheeky T the derbi duo are back in action...

i still want a derbi/aprilia jump suit can u swindle anything?