P
prism
Guest
Carb size
The 14 mm carb sounds a *lot* more workable for a 'happy time' engine (ref. to a 22 mm. That size generally goes on something - street-ridden - between 90 and 125 cc)
examples: Yamaha 60 cc two-strokes (early 70's) usually ran 16 mm carbs. The two I recall either used reed or (in the case of the one I worked on) rotary valve induction. Both turned 6000+ rpm. Case in point: the rotary valve one had a wider powerband and pulled surprisingly ***hard***. (Take that for a hint, inscrutable oriental happy time manufacturers!)
The chief advantages with the del'orto (spelling?) are 1) higher precision overall. This means longer life (parts don't rattle -> wear out) and more precise mixture control. 2) You can *get* jets, needles, throttle slides, etc, unlike the 'factory' carb. With those things, you'd best have a lathe, mill, and a *good* assortment of reamers, drills, brain lubricants (?) and related things.
Hope this is of help.
The 14 mm carb sounds a *lot* more workable for a 'happy time' engine (ref. to a 22 mm. That size generally goes on something - street-ridden - between 90 and 125 cc)
examples: Yamaha 60 cc two-strokes (early 70's) usually ran 16 mm carbs. The two I recall either used reed or (in the case of the one I worked on) rotary valve induction. Both turned 6000+ rpm. Case in point: the rotary valve one had a wider powerband and pulled surprisingly ***hard***. (Take that for a hint, inscrutable oriental happy time manufacturers!)
The chief advantages with the del'orto (spelling?) are 1) higher precision overall. This means longer life (parts don't rattle -> wear out) and more precise mixture control. 2) You can *get* jets, needles, throttle slides, etc, unlike the 'factory' carb. With those things, you'd best have a lathe, mill, and a *good* assortment of reamers, drills, brain lubricants (?) and related things.
Hope this is of help.