Other transmissionset :
There are two types: primary and
secudairy. With both you can make your scooter accelerate faster and have a slower
topspeed or just the other way around. Just let a professional mechanic handle it, it is
not very difficult to change them but I don't want to explain entirely how to do it
for the simple fact that it would take to much of my time, and my english would probably
not allow it.
Other carborator :
A bigger carborator makes your scooter
accelerate faster, and makes the fuel consumption a lot higher.
General adjustments:
Adjusting your sprinker :
To finding the right sprinkler is not
really hard; if it is to small your sparking plug should turn out white or grey after
20-50 km. If your sprinker is to big, you will notice that, when you approach topspeed,
the rpm of your engine will drop a bit, so your engine will falter, if you then turndown
your gas a bit it will run smooth again.
Adjusting rolls :
Adjusting your rolls ain't that hard
either; if your rolls are to heavy your engine will not reach maximum rpm and your scooter
will not accelerate very fast, you can check this by painting a small line (from then
center to the top) on the running surface of the v-snare at the front of the first clutch,
if your engine reaches maximum rpm then the line will be gone when you check for it after
a test drive, else the toppart of the line will still be there, so you will be needing
lighter rolls. If your rolls are to light your engine makes maximum rpm very fast but
still your scooter is not accelerating very fast nor will it drive very fast. So the best
rolls are the one that makes your engine get to maximum rpm fairly easy but not to easy,
if you know what I mean, your scooter will be performing the best in both acceleration and
topspeed.
Adjusting airfilter :
This is kind of different from adjusting your rolls
or sprinker because you can't check right away if you did the right thing. To adjust your
airfilter you should take/ drill out a plastic cap that is situated at the beginning of
your airfilter (the part that the air comes in from outside). Then you should drill little
holes in the plastic walls inside your airfilter but becareful which walls to penetrate
because if you penetrate the wrong walls the air will come in your engine unfiltered and
this could and will do serious harm to your engine. The main idea about adjusting your
airfilter is to make the aire come quicker inside your carborator. Remember when you
adjust your airfilter you should also adjust your sprinker!!! You could also buy a special
powerfilter, made for 70cc or more.
Cylinder Tuning :
There are a few things you can do:
- Level of the cylinderhead so you get more
compression and you will drive faster and accelerate harder. This a thing that everybody
can do: just take a very smooth surface, like a plate of glass and put very soft sandpaper
over it, take your cylinderhead, usually there are round marks on it indicating how far
you can take off the cylinderhead, and start rubbing over it in 8-s, this way it will stay
level all over.
- Scoff your cylinder: this is something only a
professional can do right. A friend of mine tried it with a drill, and is still
saving for a new cylinder. Remember your old piston won't fit anymore.
- you can file your spoolholes so the fuel mixture
will come in your cylinder faster. This is fairly easy done just drill out whatever is in
the way :).