Motor Speed

[hschnark]

When did Radio Shack start using the 21,500 RPM Red motors instead of the 16,000 RPM Green motors in ZipZaps?

With the SE’s?

[Azimov]

Actually, I think the first gen. Zips had the blue motors in them. They were complete slugs, so they quickly substituted the green motors. I would guess that 2nd gen. came with the red motors, though it could have been before the 2nd gen. PCB upgrade. Third Gen. came with the larger endbell connection on the red motors. And 4th Gen., which I think is the final version, has the squared endbell. I'm not counting the Pixar lighted version as I think this is a 5th version that is completely different from prior regular Zip chassis. This is the way I remember it anyways.

[fatman]

a 4.2 microB in my zz will it work