Whizzers are like potato chips, you just can't just have one.
I have over 30 Whizzers in my collection including two restored Pacemakers, two restored Sportsmans, three Original Schwinn WZ507/S4, one S10, two Schwinn DX, Schwinn Phantom w/300 motor, Roadmaster 226W, 1948 Roadmaster, 1953 Roadmaster 1999, [2] 2001, 2002, 2003, [3]2005, 2006, 2007 Ambassador, and several still in cartons, not to mention at least 35 Whizzer motors, one of the last vintage motor kits w/704498 motor, over 100 cylinders, and thousands of vintage & new edition parts so taking an extra Sportsman frame and making it a drag bike was a no-brainer. What is important is no one was able to beat it period. I can assure you, many tried but wasn't able to catch it. It produced almost 10 HP on a DYNO, not bad for a flat head 148 CC [bored to 59 MM] motor. BTW the motor started out on a 26" bike, and was a lot of fun to ride, but just couldn't get the belts tight enough to pull the taller ratios without massive slippage, because the motor revs so quickly.
Maybe some day we will cross paths and see if one of your motors can do what others couldn't. I was going to take it apart and sell off a lot of the parts, however I will leave it intact just in case.
Which Weber cam are you using in your motor? I finally collected all 3 versions, and was surprised in the differences. The most common is the .191" lift, second is the .176" lift and last and most rare is the .187" lift with 104 lobe centers. The 104 is by far the wildest and revs the highest, but the super long duration makes it hard to tune at lower RPMs. I had several camshafts ground with .212" lift and 102 lobe centers, and were much easier setting up the carburetor.
Have fun,
I have over 30 Whizzers in my collection including two restored Pacemakers, two restored Sportsmans, three Original Schwinn WZ507/S4, one S10, two Schwinn DX, Schwinn Phantom w/300 motor, Roadmaster 226W, 1948 Roadmaster, 1953 Roadmaster 1999, [2] 2001, 2002, 2003, [3]2005, 2006, 2007 Ambassador, and several still in cartons, not to mention at least 35 Whizzer motors, one of the last vintage motor kits w/704498 motor, over 100 cylinders, and thousands of vintage & new edition parts so taking an extra Sportsman frame and making it a drag bike was a no-brainer. What is important is no one was able to beat it period. I can assure you, many tried but wasn't able to catch it. It produced almost 10 HP on a DYNO, not bad for a flat head 148 CC [bored to 59 MM] motor. BTW the motor started out on a 26" bike, and was a lot of fun to ride, but just couldn't get the belts tight enough to pull the taller ratios without massive slippage, because the motor revs so quickly.
Maybe some day we will cross paths and see if one of your motors can do what others couldn't. I was going to take it apart and sell off a lot of the parts, however I will leave it intact just in case.
Which Weber cam are you using in your motor? I finally collected all 3 versions, and was surprised in the differences. The most common is the .191" lift, second is the .176" lift and last and most rare is the .187" lift with 104 lobe centers. The 104 is by far the wildest and revs the highest, but the super long duration makes it hard to tune at lower RPMs. I had several camshafts ground with .212" lift and 102 lobe centers, and were much easier setting up the carburetor.
Have fun,
