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Barn find whizzer - do wz frames have wz stamped on them?
High school friends dad has had this whizzer in the barn for many years. I've seen cars buried but this is the first time I have had to pull a whizzer out of 6" of dirt. Has dimple that I would expect on wz frame but serial number is f247883.
Bike looks to be a 49. It's not a WZ frame. Motor looks to be a 300.
If the motor serial numbers starts like this 350XXX you have a kit motor.
WZ frames don't start with a letter in the serial numbers, unless it's a July special. 1950,1951,1954, and possibly 2 other years.
Looks like I need a tie breaker. It seems like I had a frame once that had wz stamped but it was long ago. Seemed that it had more weld by the seat tube than normal bikes. I not where I can look at my bikes right now but I didn't think normal frames have the dimple
I am not an expert, but if it has a dimpled frame, and an extended brake arm with the welded on clamp, it is more then likely a true WZ507 bike. Of coarse there is always a chance that somebody added these modifications. In the photo below, you can see the factory extended brake arm. This brake arm was introduced specifically for motorized bikes.
Here are some of my bikes that were dimpled from the factory for use with motors.
The MP97's share all of the same features as the WZ507, but are the DX version, vs the cantilever.
The silver frame is an early wz507 with the flat dimples. I added the brazed on brake clamp.
Black MP97 on floor sn# I81247
Faded maroon WZ507 on floor sn# D87297
Black WZ507 on wall sn# J93128
Bare metal WZ507 on wall sn# C01094
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