OSCAR Is Plenty Fast For Me!

Discussion in 'Whizzer Motorized Bicycles' started by Hal the Elder, Nov 27, 2012.

  1. Hal the Elder

    Hal the Elder Member


    I've made several engine modifications to OSCAR, mainly to compensate for the thinner atmosphere up here in the High Desert at 3000 feet:

    I had the head milled and the combustion chamber scooped by Quenton.

    I removed the California-mandated intake restrictor, letting my carb breathe through an unobstructed port.

    I replaced my 0.9" muffler insert with a 1.0" insert, allowing 23.4 % better exhaust flow.

    I installed a richer main jet, as recommended by Quenton.

    I advanced the valve timing by one tooth on the camshaft gear. ( After installing mushroom lifters as recommended by Quenton)

    These engine mods increased my top speed to an unknown figure. (I once had OSCAR up to 37 MPH but was afraid to take it any higher, although there was plenty of throttle left for easily topping 40MPH, I'm sure.)

    Knowing that my braking efficiency with a rear coaster brake and the front drum brake were not up to speeds beyond the stock 25 MPH, and since my reflexes and peripheral vision were only sufficient for my age of 76, I thought it better not to push it!

    In the zero traffic riding area on the rural roads in and around the sprawling 78 square miles of the township of Apple Valley, I'm content with speeds of 22-25 MPH, and when I occasionally see another vehicle, I ride to the side of the road.

    I find that my best accelleration begins to come on at 30 MPH, but I don't normally cruise that fast.

    That's All.....

    HAL the ELDER

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    Last edited: Nov 27, 2012

  2. Racie35

    Racie35 Member

    didn't name my NE5 but its plenty fast for me too...now that the clutch is with the program, things are looking better.....gotta get my new luggage rack put on later
  3. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

    Hi Hal

    The next SoCal Motor Bicycle Racing event is on Saturday
    April 6th 2013 at Grange Motor Circuit in Apple Valley.

    Should be close enough for you to drive there on your Whizzer.
    Would be great to meet you.
  4. Hal the Elder

    Hal the Elder Member

    Where is the Grange motor circuit course?

  5. Hal the Elder

    Hal the Elder Member


    What's your name, anyway?

    You don't need to GET your luggage rack put on...it's easy to put on yourself!

  6. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

    I wasn't suggesting that you race.
    It's a very fun event with an amazing collection of motorized bikes
    and their creators.
    We get quite a few spectators that join in the fun without getting on the track. :)

    Grangé Motor Circuit GrangeRaceTrack.com
    20455 Central Rd.
    Apple Valley, CA 92307


    1) 15 Freeway North past Victorville.

    2) Exit 157 = the Bell Mtn / Stoddard Wells Rd off ramp and go North East
    (There are 2 Stoddard Wells Rd. The second is Bell Mtn )

    3) Do NOT make any turns off Stoddard Wells Rd until you reach Central Rd.

    4) Go right (South) on Central approx 1/4 mile and you are there.

    PS: Do NOT use your GPS for directions as it will route you up
    Central from the south which is not accessible because of train tracks.

    Last edited by a moderator: Dec 18, 2015
  7. Racie35

    Racie35 Member

    it's Bruce........I meant "I" need to get it on the bike....then wait for a nice enough day to take another ride
  8. Hal the Elder

    Hal the Elder Member

    OK, Bruce!

  9. Hal the Elder

    Hal the Elder Member

    YEAH...I know where that is!

    I would like to look at other Whizzers all right!

    Thanks for the info...I'll mark the date on my calendar.

  10. Racie35

    Racie35 Member

    around here (Connecticut) I dont think these bikes are overly popular but i'm looking for others who may have a ride organized or something.