Wurlitzer 2400 turntable belt groove

58starlight · by **58starlight** » Tue Mar 03, 2015 5:21 am

I have a Wurlitzer 2400 s. It has two grooves on the turntable belt drive wheel. On the front of the wheel it says use inner outer groove. I have two questions. First, this machine requires only one belt, correct ? The second is, which groove do I use ? Thanks

by **Ron Rich** » Tue Mar 03, 2015 5:55 am

Just as it says"inner/outergroove"-- OK I never knew what that meant either--just use whichever aligns best with the turntable--
Ron Rich

Rob-NYC · by **Rob-NYC** » Tue Mar 03, 2015 8:58 am

There were at least 3 different makes of motor used at that point. Since they were not synchronous they all had slightly different RPM's. So Wurlitzer adopted the stepped pulley to bring the speed reasonably close to accurate based on brand of motor used. The all ran slightly fast anyway.

Rob

58starlight · by **58starlight** » Tue Mar 03, 2015 9:27 am

Interesting, I did notice that one groove appears to be deeper than the other. I am using a Redmond motor. 1685 / 1640 rpm, I guess that is the rpm coming out of the two grooves ? The motor its self would not fluctuate that much would it ?

Rob-NYC · by **Rob-NYC** » Tue Mar 03, 2015 12:07 pm

The RPM's on the motor plate are it's output. The variations are typical of load/no load.

The first carousel mechs such as the 1700-1800 (models that I've owned) used only a "C" frame motor and the pulley had only one groove.

Rob