hello everyone my name is Spectroplasm and i live in Madagascar (very far from the rest of the world). i have a PGO big max 50 scooter with the following kits -70cc AC steelcast cylinder kit (koso brand) -koso variator with 4g Dr. pulley weights -hebo racing adjustable clutch (red central spring and green pull springs) -homemade pipe (with a broken silencer ) -Vforce reeds (manually cut to fit intake) -Mikuni 21mm carb with Koso racing tubes and TNT racing boost bottle (blue) -TNT digital speedo and TNT tunning handle bar and rod -dual spider 100w xenon headlights -Bando VS 736 drive belt -the body casing is pretty beaten up :rofl: (my cousin fell on it twice ) well that's all my scooter specs i'm looking forward to helping others as well as getting help from others too since my bigest problem right now is the speed at which my scoot is going , before my pipe snapped i can hit a steady 78kmh (i know it can do more than this by i can't seem to tune it in right). after my pipe snapped i can now hit only 69~72kmh .
:welcome: how did you make your homemade pipe? did you make your measurements and calculations to produce the right expansion chamber size etc. ??
hey alexsr70, i used cone3d to make my pipe belly patterns and i have a small handbook on how to measure the length, gut, return and curve of the pipe. it's tuned to kick in a 7.5k~8.23k rpm. but after it snapped the measure is off now.
