Scooterotica

That's what my hexagon 180s do 21bhp from a 20.5mm dellorto/mikuni carb the same as the 180 runner also using a 50cc auto reedvalve so seems like there is a something going a miss with us lammie men here pouring gallons of petrol into 30/34mm carbs!!!!!!!!!!
Just imagine what piaggio could do with a 300cc 2 stroke although the carb would probably be a 28 vhst or something similar...........suppose it would have to be fuel injection.

shamrockexpress wrote:That's what my hexagon 180s do 21bhp from a 20.5mm dellorto/mikuni carb the same as the 180 runner also using a 50cc auto reedvalve so seems like there is a something going a miss with us lammie men here pouring gallons of petrol into 30/34mm carbs!!!!!!!!!!
Just imagine what piaggio could do with a 300cc 2 stroke although the carb would probably be a 28 vhst or something similar...........suppose it would have to be fuel injection.

How spooky.......i have just had a rather enlightening conversation with a very nice man about various aspects of tuning, and this carb thing was certainly an interesting part of the equation! There might just be an article about it coming to a Scootering magazine near you in the not to distant future!

One of the Italian , I think, race series only allows standard 19 mm carbs on a smallframe Vespa yet the motors kick out high HP.

shamrockexpress wrote:That's what my hexagon 180s do 21bhp from a 20.5mm dellorto/mikuni carb the same as the 180 runner also using a 50cc auto reedvalve so seems like there is a something going a miss with us lammie men here pouring gallons of petrol into 30/34mm carbs!!!!!!!!!!
Just imagine what piaggio could do with a 300cc 2 stroke although the carb would probably be a 28 vhst or something similar...........suppose it would have to be fuel injection.

Compare the cylinders two totally different animals. The carb is only 1 aspect of tuning and there is a world of difference between a SH20 and a PHBG or Mikuni 20.

drunkmunkey6969 wrote:

shamrockexpress wrote:That's what my hexagon 180s do 21bhp from a 20.5mm dellorto/mikuni carb the same as the 180 runner also using a 50cc auto reedvalve so seems like there is a something going a miss with us lammie men here pouring gallons of petrol into 30/34mm carbs!!!!!!!!!!
Just imagine what piaggio could do with a 300cc 2 stroke although the carb would probably be a 28 vhst or something similar...........suppose it would have to be fuel injection.

How spooky.......i have just had a rather enlightening conversation with a very nice man about various aspects of tuning, and this carb thing was certainly an interesting part of the equation! There might just be an article about it coming to a Scootering magazine near you in the not to distant future!

thanx for the heads up Dan i,ll look forward to reading it when i pick up my next copy of :
classic scooterist magazine

anyway is the 20.5 carb so good has no one ran one on a lammie yet??