is anyone here using a Delorto carb phb 25 or 26 on a Bantam ?? Just wondering what jet sizes you are using. I have had it bored to 186cc with a Suzuki piston.

Have tried a 25 which was off a Fantic 200 , it may be past its best, started okay but didn't run too well when warm, also a 26 which I believe was off a Gasser, the jets are the same ?? again starts okay, may run a bit better. Not able to take the bike out yet just getting sorted. Thanks in advance.

I run an Amal on mine (old british carb). 1" bore, runs good...

You can get Mikuni to work well on the Bantam.

VM26-8074

Main 130, Pilot 35, Slide 2.0, float valve 2.5, needle jet 182-P0, Needle 5DP39, Air jet 0.5

Eurocarbs may have some idea for a Dellorto

http://www.dellorto.co.uk/