Dyno Component Testing and evaluation

[High-Gain SR50]

This is a set of runs I did to help determining the best roller / scooter speed to start the graphs at. Under 10 mph the transmission shouldn't have much if any transition going on. A standing start is hard to graph consistantly but 5 and 10 mph are very repeatable. This will show you the higher you start (above 10mph) the lower your peak HP will be.

[High-Gain SR50]

This is a graph of the corresponding engine speeds.

[High-Gain SR50]

This is a back to back run with the derestricted OEM ECU and then with the 70cc Malossi module added. It idles good but the part throttle is terrible. If you were racing in a 49cc class this could be helpful, but then again, the HGT Regulator took us from 5.16HP to 5.58HP with no part throttle issues.

[High-Gain SR50]

Just as I felt with the butt dyno, the 3 degree advance key added bottom end... not earth shattering but for $8.49 it is the highest HP gain item per dollar. Since 2t's need to retard their timing as rpm's increase, you can see where the HP starts dropping off quicker at the top. On the street you may not hit the point where it starts to drop off.

[High-Gain SR50]

Here's the LeoVince Shoot-out at 49cc.

All pipes were tested back to back at 60F. A little cooler then most my other tests.

All pipes were tested with supplied 4.8gr rollers from LeoVince

Each pipe was fully warmed up and ran 3 times. The top run was graphed.

The order of the pictures is the order they were tested in.

[High-Gain SR50]

This is what all 9 runs look like.

[High-Gain SR50]

Here I have added RPM to the graph. The RPM's are holding just above 8000 as the variator transitions and peak HP is just under 8200.

[High-Gain SR50]

This is the 70cc kit (no adjustments) compared to the 49cc with the ZX-R pipe and tuned. The transmission was all over the place, up and down.

[High-Gain SR50]

This is where we have come from stock 3.80 HP 49cc to 70cc. This is after adjusting out the clutch and rollers..... much smoother. The engine will pull 6.50's consistently and has pulled a 6.62 with the ZX pipe but the ZX-R is holding a higher HP throughout the run where the ZX is peaking and falling off faster.

Quite a change from the show room floor Horse Power.

[High-Gain SR50]

Here's the 4 pipe shoot-out at 70cc between the LeoVince ZX, ZX-R, GP and Tecnigas RSII. When I saw the numbers from the GP I about fell over, then after plotting with the rest of the pipes I could see it fell off fast. The RPM's were also much higher so I am wondering what it will do if I fatten up the rollers and hold the RPM's lower for it.

[High-Gain SR50]

70cc PFI Dyno runs.

[High-Gain SR50]

Here's the difference in case matching and porting the Morini with a Malossi BBK vs bolt on.
1 HP increase and .63 foot pounds of torque. The fall off occurs more at higher rpm's.
Top speed and 0-60 significantly different.

Attachment 205481