hello, I have a problem with my bultaco sherpa. the bike don't want to take turns. it is very soft on acceleration. I have a well adjusted carburatzur phbl26. What is the problem. thank you

Is your timing correct ?

I have  levistronic Rp5 

Was it running OK before you changed the ignition or did it happen after you changed to the Dellorto

As Sherpa325 says you must find out "what is wrong with what" before trying to rectify it.

If you suspect the Dellorto, test OKO. Pay attention to the air filter and how the carb is connected to the air box. I found out this is very important

OKO can be bought here http://www.mid-atlantictrials.com/Bultaco.html

Edit Spelling error

Edited December 2, 20214 yr by carl ekblom

Can you advise the pilot, main jets, and needle type in the Dellorto.

Tried different PHBL combinations. This is one of the latest

Idle             25

Needle      266K

Needle jet D36

Throttle      60

Main         115

Thought first it was very nice. Strong mid throttle and full throttle

Later found out it was little weak at low throttle.

Perhaps PHBH is more all round. Also more period.

OKO or Mikuni for Bultaco is more all round. Today OKO is my first choice. However OKO may not be permitted for competition everywhere. But flat slide is period

 

what setting with Oko ?

Main     112

Idle        50

Needle

Needle   JJH

All jettings for 199A and OKO quite cold (late autumn)

Basically the Mid-Atlanics jetting

Levistronic RP5 --> HS 

Timing is not correct