MOPED ARMY

1.25 Inches. Fact.

15.63 I belive , But you cant just drill out the original hole . You need to offset it to miss that little hole . A drill press and a special set of boring bits .

One of the Denver dudes did one for me . He works at a machine shop . Cool dude , does nice work too . Rickus is his name . I think he charges like 15 or 20 to do it up .

If you bore a 14.12 out to 16, do you modify the intake clamp to fit bigger intakes? Or can you just slide the plastic gushing out? (I'm too lazy to walk all the way out to my work area and see for myself.)

or if youve got em laying around, put a 14.12 emulsion tube into a 15.15.

give you better idle circuit and low end

could you tell us how you take emulsion tube out?

it would let me drill more in; is there some trick like heating the carb and so on...?

thanks!

ive just noticed that 14.12's have better idle circuits for mopeds, as the 15.15s and such were designed for pocketbikes and scooters.

its just a theory, but im always way richer at idle on 15.15's

also, the french know about this too. av10's work better with 14.12 carbs

I have found that the SHA 15/15 is better for export timing of 172+ deg's for 50cc / 168+ deg's for 60cc / 164+ deg's for 70cc / 160+ drg for 80cc.

Low end power sucks on 50 and 60cc peds with SHA 15/15's .

I get beter power with SHA 14/12 taper boar 16mm in 13.5 at venture 3mm from tube 14or 15mm out.

I have a V1 78cc with SHA 14/12 taper boar 16mm in 13.5 at venture #62 jet 47+MPH.

I need to try the 14/12 to 15/15 tube swoop .

Thanks

Fast Bat out

it has tons of pics, and it's step by step. MAgoogle that shit in the performance section. it's a write-up for vespa's but it's there.....somewhere

maitland this is a very interesting observation. but have you concluded that a del 15 w/ a 14.12 emulsion tube is better than just using a stock 14.12 on the same setup? im just curious as to which is the more important variable... the size of the carb (14.12 vs 15) or the emulsion tube used..

are the emulsion tubes in anything 15+ the same?

i have all sorts of del parts at home i will give this a whirl

well you want a larger venturi for more air/fuel flow. The 14.12 emulsion tube should give you better low and mid range and the larger carb size will give you the better top end.

at least thats how it should work in theory

"here you go guys":https://www.mopedarmy.com/forums/discuss/7/121263/121263/

check that link out, should help out a little bit. there are some visuals that in there from the basic ass write up i did, with my cuzzo helping me translate dutch forums