TEAM VESPA
My build goal is to have two engines - one that's super reliable and one that's super fast. The reliable engine I'll be running is one I've been running for thousands of miles and discovered numerous weak points on which I'll be addressing before taking off on the new blaster engine. This modest engine with additional gear should run upper 40's effortlessly with forays to 55mph or more. The second engine is a faster engine. Target top speed for this engine is 65+mph to cruise at 50-55mph with low load on the engine. Big cylinder, big gearing, big rear wheel. Low revs and "high" speed are the name of the game!
The bike in question is a rotary intake Vespa moped engine with a CVT (continuously variable transmission), hydraulic suspension and hydraulic disk brakes adapted from a dirt bike. The grande is the beefiest of vespa mopeds, and this one has been beefed up even further!
Engine 1: Conservative
DR65 65cc 43mm Cylinder
13:13 Dellorto SHA
Malossi Hi Flow Air Filter
Stock Bushing 12mm crank
Circuit pipe expansion chamber exhaust (heavily reinforced)
13mm intake matched, intake patch opened, crank cut
Kinetic TFR CDI firing at 19* static
Polini Variator
Modified US rear clutch with dio clutch springs and polini silver contra spring
3 step bell
Malossi gears (Currently hitting 50mph with 11:1 final drive, will upgrade to 9.5:1 for the run)
Case modified to bolt on steel intake instead of cast flange
Subframe heavily reinforced
Engine 2: Blaster
Pinasco 46mm 75cc Cylinder
Tube Subframe
OKO 21mm Carburetor w/ Thunderpower Adjustable Power Valve
Dio/Speedfight Reedblock
Calibrata Expansion Chamber Exhaust
K&N Metal Mesh High Flow Airfilter
Vforce 8 petal carbon fiber reeds
Malossi Final Drive Gears
Euro Clutch
Sprocatti Bell (CNC'd vs. Cast means less likely to explode)
Polini Variator
17" Wheel (mild setup is 16" wheel)
Stock bushing 12mm crank
Case Inducted from right case half
If you'd like to help fund this adventure, please feel free to donate! More updates and info as the run approaches!
Why no performance cranks?
ReplyDeleteAre you going to cut your stock crank for the non reed valve engine?
Actually, the reed valve engine blew up in multiple ways before I could run it. I wouldn't bother cutting it though. The reed block would basically be dumping into the right transfer above the crank webs.
ReplyDelete