Delorto PHBH 30 carb help please

[stokky]

got a mates scooter in to put new top end on. (from Rapido 200 upto Rapido 225)

thought better check carb out, for jets etc.
DO PHBH 30, pilot 55, Main 110, Needle X7 top clip, Atomiser AV266, and slide 30.

So as you do, search internet for people with similar setups (oh has 48ml Fresco too).

Main jet looks a bit light, but what caught me is the slide.

No one else seems to run this carb with a 30 slide. Everyone one runs 40 or 50 slide

Does that mean a 30 slide lets in more or less air than a 40 or 50 ??

Presume the 30 refers in some way to the small cut out at bottom of slide.
How would a 30 slide affect the jetting etc (presumably not when on main jet and over 1/2 open)

Thoughts please !!

[Toddy]

Any good of a mates Rapido 225 Reed conversion

30 mm Dellorto / Jl3 pipe
Main 146
Pilot 55
Slide 40
Atomiser AV266
Choke 70
Needle 2nd from top X13 , 2nd clip

[Toddy]

bit about slides on here

http://www.ilambretta.co.uk/forum/viewt ... =10&t=3241

[stokky]

cheers Toddy, also found something somewhere (probably LCGB), where they had a 30 slide converted to 40, by having about 1ml taken of bottom cutout

initially plan to leave as is and just upjet main

[Toddy]

cheers Toddy, also found something somewhere (probably LCGB), where they had a 30 slide converted to 40, by having about 1ml taken of bottom cutout

initially plan to leave as is and just upjet main

Yes i had that done by Martin at Chiselspeed on a dyno run , dressed the bottom of the slide to suit the set up

[ktmh5]

My set up on Rapido 225 Classic with BGM pipe so should be similar:-

30mm phbh
Main 122
Slide 40
Pilot 52
AV266
x7 Needle on 2nd clip
Choke 70

Dynoed at Scooterotica and was spot on.

Rich'