I have been doing some testing today. I really started testing so compare a couple engines I have. Then I wanted to see how much of a difference nitro content actually makes. I will add more engines later maybe. Here is what I found so far. Garmin Forerunner 301 GPS was used for the speed and I use the rc gears speed calculator to figure the RPM'S
Engine: LRP Z.28 Spec 3
Chassis: Mugen MBX5T
Pipe: Jammin JP2
Diff ratio: 4.6:1
Spur gear:46T
Clutch Bell: 13T
Tire diameter:6.5 inches compensated for "ballooning"
Fuel: 15% nitro, 8% castor oil
Plug McCoy MC59
Top Speed:37.6 MPH
RPM: 31700
Fuel: 30% Nitro, 9.5% castor oil (for better protection)
Plug: McCoy MC9
Top Speed: 41.8 MPH
RPM: 35200











