My 2001 elite 50 build-up

[Wheelman-111]

Greetings:

My 65cc Flash I last ran a 96-ish with a stock carb and LV exhaust - tuned to run about 8500 RPM. I got as high as a 101 but jetted back down in response to spark plug color. To get the in-between sizes you need to get a set of indexing bits and roll yer own.

[aerorob]

yeah im sure when i go to a pod filter i should run into the 90s. its amazing how much this pipe has opened up my scooter, i had no idea that stock it was capeable of such power. the day i bought it i was worried when i was wide open down hill going 37...

[aerorob]

http://jiangwayne.com/scooter/p_i.php?i=226

that is the link for a belt from jiangwayne, it says its slightly wider, giving slightly higher top speed potential, i was wondering if anyone had used this particular belt. i have to replace mine soon probably, so i was weighing out my options.
thanks!

[evilone]

Wider belt = worse take-off. And i wouldn't go Kevlar personally unless my belts broke frequently.

[aerorob]

thanks evilone. so just the stock belts are the best bet on replacement?

[bakaracer]

Yeah the stock belt is fine or something the same length and width.when you get a wider belt,you have to start playing with shims to tune your trans to get it right.I like the daytona belt for the dio sr 2t.that belt is good but hard to get and if you can get it,its pretty pricey and about almost double the cost of a stock bando belt.

[aerorob]

yeah, thanks. i am happy with my performance in the low and mid, but once i get past 40, its pretty gutless, so i am thinking i will be needing a big bore to make speed over 45 usable.

[aerorob]

so in conclusion with the 88 jet... seems to have killed my top end a little bit. over maybe 43 it gets weak and i cant seem to get the revs as high as before. does this sound like a over rich symptom? could i correct this by giving the airbox a couple extra holes? thanks!

[Wheelman-111]

Greetings:

It certainly could be an over-rich situation. Before you go poking any more holes, do examine that spark plug for any shade darker than "Cardboard". Another way is an accurate CHT gauge. I've seen fluctuations of 25 degrees changing only jetting.

[aerorob]

thanks, ill check my plug now.
is that a symptom of richness rule of thumb though? having a harder time climbing rpms? before i do any destructive work i will check, but it might be good to know for tuning purposes in the future.

[Wheelman-111]

Greetings:

Quoth AeroRob:

is that a symptom of richness rule of thumb though? having a harder time climbing rpms? before i do any destructive work i will check, but it might be good to know for tuning purposes in the future.

Yes, a too-rich mixture produces less power than an optimal one. Fuel content exceeds the quantity of oxygen available for complete combustion,and in fact that excess fuel displaces some of that oxygen in the mixture. The result is that fewer molecules ...er... Combust, and less force applied to the piston crown. A byproduct of rich mixture is lower chamber temperatures, which also goes against good power. Another is that the excess fuel is deposited on the surfaces of the combustion chamber, where its ash accumulates as dark, charcoal residue.

A lean mixture has less fuel content than the oxygen available. The mixture burns hotter for a couple of reasons. One is that the atomization of fuel from liquid to gas is itself a heat-absorbing phase change. (Think about how cold a spray can gets when you hold the button down...) I don't know the other reason. However I do know that a slightly-lean mixture produces more power than a slightly-rich one, at the cost of hotter chamber temperatures. That heat cooks the hydrocarbon residues to a thin white ash instead of black. If you see that, beware.

[aerorob]

awesome. thanks, im just seeing if i can get the performance i want at 50cc. i really want to avoid being out a scooter during the dissassembly/boost port work/reassembly/tuning/break in. my aero still isnt quite fast enough to get my where my elite can.

[aerorob]

does anyone know of a bbk for the elite that doesnt require boost port work on the case? see, i live in an appartment and dont have space to do a ton of work(nieghbors dont like to see scooters in peices hanging around) i can get a really good deal on a bore kit, but i have to port the boost and unfortunately i dont think that is an option where i am at now. any bbks that are around that work with unmodded case? thanks!

[Wheelman-111]

Greetings:

My first "build" was the Polini Contessa on the SE/05 Aero block. I didn't bother to port anything but the intake tract and mani. Worked fine. If you can drop the engine and carry it into the Boudoir, nosy neighbors need not know. Sometimes I've been known to carry the whole scooter upstairs. This is why I don't own a Silver Wing.

[aerorob]

i would do like i did and wheel my scooter right into the house, but me and my girlfriend are now live in's at a historic mansion that has been converted into a bed and breakfast. named Portland's White House. the owner would trip if he knew my two stroke oil was anywhere near his 100 (actual) year old rugs and paintings. and with the constant rain up here i have trouble getting any work done outside.