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1978 Mopeds speed

Honda Express Moped Scooter NC 50 1978 - Express II, SR, Urban Express: Honda Express Top Speed

Honda Express Top Speed - NC50 Max MPH Speed Limit


o, what is a Honda Express moped's top speed? Well, they don't have a governor built-in like you can have on cars or other motorized vehicles. The stock engine on an Express nc50 moped is 49cc. Here are some common factors that will determine the TOP SPEED of your express scooter:
  • Grade of gasoline/petrol fuel - If you use the cheap stuff... you will get lower performance. We all know Honda mopeds are not built as a stock performance bike, but the fuel grade really does make a difference. As with many types of engines, the better the fuel... the better the speed, acceleration, performance. The premium grades of gasoline have additional additives an higher octane (which burns faster). So, try using a high grade gasoline (octane greater than 90) to increase your Honda Express moped top speed.
  • Type of oil your moped uses - Again, the lower quality oil... the decreased chance of performance. You want to use a honda moped oil that will increase the moped's performance like Lucas semi-synthetic 2-cycle engine oil. Don't just use any type of oil (like regular car motor oil), because it could literally cause your engine to "melt-down."
  • Gear oil in the crank case - Is the gear-oil in the nc50's transmission case is low or old this could slow the chain and gears down from turning at their maximum rate of speed. The older the oil gets and the more it is used, the lower the oil's viscosity potential becomes.
  • Air in your tires - This is a simple one, but easily missed. Inflate your 1978 Honda Express nc 50 tires to the correct PSI labeled on the moped's rear fender. Or, consult your Honda express moped manual. Cold tire pressure: psi(kg/cm2) : FRONT 21(1.5) REAR 28(2.0)
  • Wheel ball bearings - If you moped scooter has been neglected or someone has reassembled the wheels incorrectly you could be loosing precious moped top speed due to this. You can repack your wheel bearings using wheel bearing grease at any performance bike shop.New spark plug - Make sure your spark plug is clean. If there is oil or corrosion then this will hinder your honda scooter's top speed.

  • Clean air cleaner - Your honda moped's carburetor needs to receive the proper amount of air/oil mix to operate properly. If the honda air filter/cleaner does not get enough air you can find you honda express motor lacks power.
  • Too much weight - No offense... but do you weight too much? The lighter load on the moped... the faster it goes. The 1978 Honda NC 50 scooter has a "vehicle capacity load" of 180lbs OPERATOR ONLY. Front 7lbs (with optional carrier fitted)

Kenda Kenda K413 Front/Rear Scooter Tire - 130/60-13/--
Automotive Parts and Accessories (Kenda)
  • Designed for performance minded machines
  • Tread design has excellent water dispersion and wear characteristics
  • 4-ply rating

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Thanks for the help. here's alittle more info.

2011-07-25 18:01:10 by ProphetRasputin

I know enough to know i have a full gas tank. I check the fuel filters and lines. They are clean, working, and attached (no kinks or loose hoses) It is Chinese though, lol. Their take on a Honda. i can't take it back to the dealer, because i got it two states away. The air filter is clean. My roommate and I are going out right now to clean the carborator (by running rubbing alcohol through it). I have a idle screw, and it sounds to idle best at just under 2000 rpms which is a just shy of starting the rear tire to rotate (when on the center stand).
my exact scooter is a RK 150cc Scooter Type 75 (2009, but recieved it 4 months ago from manufactuer

Live Wire: No license plates required for mopeds  — Fayetteville Observer
Note: This definition applies to many machines that are described by their manufacturers as scooters or mopeds. Whether the machine is a moped or a motorcycle, its operator must obey all traffic laws.

ScooterX Scooterx 3.50-12 Tire for Scooters 50cc 150cc 250cc, and Mini Choppers
Single Detail Page Misc (ScooterX)
  • 3.50-12 tire
  • Fits many different applications
  • Comes with 30 Day Warranty
  • This tire fits a 12 inch rim
www.rabbitscooter.com Tank Urban Sporty 150CC Moped Scooter
Single Detail Page Misc (www.rabbitscooter.com)
  • Tank Sport Tuned Suspension (STS)
  • Dual Brake Lever Covers
  • Front ABS (Anti-Lock Braking System) Rear Disc Brake
  • Tubeless Wide Tires
  • Stepless CVT Automatic Transmission
Pirelli Pirelli Diablo Performance Rear Scooter Tire - 150/70S-13/--
Automotive Parts and Accessories (Pirelli)
  • Pirellis new radial tire for the demanding class of sport scooters
  • Tread pattern adapted from the Pirelli Diablo sport tire adds the best wet handling and dry grip while limiting road noise
  • Only scooter tire with multi-ply carcass and patented 0 degree steel belt
  • High-performance tread compound imported directly from Pirellis sport-touring tires results in more mileage and regular wear
  • Larger contact patch maximizes braking efficiency and traction in all weather conditions, which increases rider safety

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