Aero 65 Jetting So Far

[Wheelman-111]

Greetings:

Polini 65 kit, 0.5mm carbon reeds behind cleaned-up manifold, K&N filter, Leo Vinci 4447 pipe. Drilled Polini jet to 90-ish. The plug was paler than Nestle's Qwik, temps hovering near 300, iffy power with prolonged WOT.

I suspected lean mixture and overheat was the issue. Tonight I installed a 95-ish and it was markedly better. No power trail-off after 45 seconds WOT and a shade darker plug. Think Fry's cocoa.

Speed is back to high 40s with 7.83:1 gears, which is what it was with stock 11:1. No hill necessary to reach that speed, which arrives fairly quickly, then the RPMs abruptly decline as the variator goes full overdrive. The new thing is I can cut throttle to roughly 2/3rds and still maintain over 40.

My only remaining issue appears to be the 8g variator weights, which arrived from China today. Still too heavy, it seems.

I should receive my new $25. OKO tomorrow, and will try 7s to start. Suggestions welcome.

This concludes our broadcast day.

[scooterwerx]

here is a plastic prototype of the adapter, we grew it on a rapid prototyper, it layer molten plastic .007" over and over until it builds up the part, tomorrow we will have aluminum or nyloil spacers! *!

[Wheelman-111]

Greetings:

Nice work! But whaddya think of my setup with the teeny-tiny stock carb?

[chevyguyjay]

nice! make sure u post pics once its installed on the bike to. show us that tail light to when u finish it. i like your work.

[Wheelman-111]

Greetings:

CGJ did you recently post that you were using a 95 main? Is your setup similar to mine? Cylinder bore? Open filter and performance pipe, too?

I rode to work this morning, everything was sweet with the throttle. Good midrange - Terrible 0-10 due to big step up to 7.83:1 gears, I may need to accept that or find +3000 clutch springs. My top end is back in the high 40s, but cruising at 40+ requires very little throttle. (See Mileage Thread)

You axed for pitchers; here's a 3/4 Back Right view, Pre-Leo Vinci:




And my now legendary poor photography of the LV bolted up:



I plugged the K&N on this 3/4" PVC 45-degree elbow clamped to the airbox flange on the carb, rubs lightly on the L side cover but should be ok.:




I'm trying to forward a picture of my airfilter installed, but the server seems to be constipated this morning.

Please do give word on your thoughts about jetting.
Thanks!

[scooterwerx]

lean is mean, but rich is a b****

thats what the sprint car guys say!
id rather be a touch rich on a two stroke, for sure. 95 sounds about right. im at 98, 1700ft elevation.

[scooterwerx]

oh yeah, CGJ, the taillight is on hold because ive been waiting and waiting to get a rear turn signal housing that isnt busted up into bits like mine! hmmm...

[chevyguyjay]

on my aero, im running a 90 jet. ive got the k&n filter. little bit of cylinder work, ported intake, shaved 85 spree head, advanced timing, ram air scoop, stock muffler cut open and bigger pipes put in. i can hit up to 42-43 all day. my buddys spree, he has the 85 aero engine. hes running the 63cc bore kit, shaved 85 spree head, advanced timing, kevlar belt, pully kit, clutch springs, stock muffler, ported intake, with a 95 jet, and the same k&n filter. frickin warp zone take off. he can get to about 46-47. no gear change on any of the bikes.

[Wheelman-111]

Greetings:

I appreciate you taking the time to respond. I think I'm pretty close with the 95-ish jet. (I keep saying "Ish" because the .94mm bit fits but rocks a few degrees, while the .964 bit won't go in at all.)

It sounds like our setups are similar except for my Major Coup LeoVinci pipe, and my tough-to-tune-to 7.8:1 gear set. What's up with the shaved Spree heads on both your scooters? I have not come across anything about that whut I can recall.

I was not aware of any easy way to "advance timing" Did your buddy reposition the CPS?

Your turn to post pics. I'm especially interested in your "ram air scoop". Just don't go to the car wash on my account... I'm ashamed enough as it is.

[chevyguyjay]

its basicly the fan cover with a piece of alum on it. ill post some pics later on. also, ill give u the measurements of my air filter. i honestly dont remember the part number. it was a kc somethin lol?

[Wheelman-111]

Greetings:

Don't sweat it. I installed the RU-100-something that has a 20-degree kink in the mounting flange. Tucks tight against the shock and still almost clears the side cover. Just peeks out underneath it too.

[scooterwerx]

advanced timing??? howd ya do it!?

[evilone]

Chevyguyjay, sounds like you need a muffler We'll need pics when you do get a new one.

[Wheelman-111]

Greetings:

I was waiting for the new plug to get some miles accumulated - it was brown, but cafe-au-lait after about 50, using the 94.639482068 hand-rolled stocker. It never got any darker:




I know, I spell photography with an "F". Still you get an idea of the insulator color .

Temps began to hover at or a bit above 300 as the weather got warmer, so last night I installed my 96.5 and went out to test. Throttle response was better above 40 and a New Flash World Record of 48.5 was recorded with calm winds and a flat but bumpy stretch of pavement. Temps were staying at or just above 275. Several shades darker plug noted still coffee, just a bit less milk. May try my 99 to see if I like it even better.

Starting a Tuning Sequence Thread in Performance Technical.