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af16 build questions
Posted: Thu Apr 23, 2020 12:15 pm
by rag
getting ready to do a af16 build and have a few questions, going with the Polini 72cc bbk and Arrow exhaust my questions are on carb and intake, I am looking at the Stage 6 intake and reed block assembly and wondering if anyone is using this setup and is it good and other question is on carb am currently thinking Polini 19mm carb and wondering what difference is between the CP and the PWK?
Re: af16 build questions
Posted: Thu Apr 23, 2020 12:17 pm
by Meatball
Which Polini 72cc kit do you have? Theres a couple.
Re: af16 build questions
Posted: Thu Apr 23, 2020 12:48 pm
by rag
the corsa kit
Re: af16 build questions
Posted: Thu Apr 23, 2020 1:08 pm
by Meatball
Stage6 or Naraku intake...24mm PWK w/Main and Pilot jet kits...Stage6 pod filter...tach and CHT of choice
Youre going to want to do gears and CVT upgraded also.
Re: af16 build questions
Posted: Thu Apr 23, 2020 1:47 pm
by rag
okay thanks and yeah am thinking 9:1 gears on gearing and looking at CVT stuff now
Re: af16 build questions
Posted: Thu Apr 23, 2020 2:33 pm
by Wheelman-111
Greetings:
9:1 gears do great on stock or mildly modified (iron cylinder) Sport setups. They are a bit short for a Corsa in my experience, unless your priority is acceleration over top speed. Consider 8.3s or taller.
Re: af16 build questions
Posted: Thu Apr 23, 2020 2:57 pm
by rag
okay and since sum part sites don't go by 8.3 they go by tooth count what does 8.3 equal out too
Re: af16 build questions
Posted: Thu Apr 23, 2020 3:03 pm
by Wheelman-111
Greetings:
See
Tooth Tally Looks like 15/42
Re: af16 build questions
Posted: Thu Apr 23, 2020 3:16 pm
by rag
ok and that graph is confusing for a novice lol
Re: af16 build questions
Posted: Thu Apr 23, 2020 3:31 pm
by rag
looking at scooter swapshop site on gears a 15x42 is for stock or mild 72cc builds and is a 9.8 :1 and they say for 72cc builds a 16x42 9.2:1 is best and a 17x41 or 8.2:1 is for smaller cc strokers, so which is it really
Re: af16 build questions
Posted: Thu Apr 23, 2020 3:52 pm
by Meatball
I have 17x41 (8.4:1) in one of mine and 16x42 (9.1:1) in all the others. Ive also tried the 10’s and even 7’s but both didnt do what I wanted. It really depends on your riding style. If you mainly ride in the city then the 9’s are the torquey gears that blast you off the line. If youre more of a rural twisty country road carver and you spend most of your time topped out at full throttle then go for the 8’s.
I have multiple scooters that are setup all in different ways. Which one I ride depends if Im out for a leisurely cruise through the country at 60mph+ or if Im riding with the boys in the city on full urban assault!
Re: af16 build questions
Posted: Thu Apr 23, 2020 4:10 pm
by rag
okay than I should do the 9's as I am all city shorter rides and light to light
Re: af16 build questions
Posted: Thu Apr 23, 2020 4:12 pm
by rag
they have a 16x 36 and a 16x42, which of them would have more top end speed
Re: af16 build questions
Posted: Thu Apr 23, 2020 6:09 pm
by Meatball
Get the 16x42...the difference in top speed between those is minuscule.
Re: af16 build questions
Posted: Thu Apr 23, 2020 6:33 pm
by bonesv
The 16*36 gears are primary gears that do not require you to have the gear pressed off and a new one pressed on so they just swap out. The 16*42 are secondary gears and do require you to press off the gear from the axle shaft and press on the new gear. The 16*36 are way too tall for city driving IMO