I will say that Larry's replacement worm gear is a good thing for any of the B&H machines that have worm gear failures. I have used a number of them and they have been excellent.
However, I will also say that the worm gear failures that the B&H 500-series and 1500-series machines are prone to are the result of using a lubricant that wasn't compatible with the delrin gears. So if you encounter one of these machines that hasn't broken a worm gear, clean the grease off and put some grease that is not going to damage it. I have been using the Mobil 1 synthetic grease. Likely after decades with petroleum grease on them, it won't help much at this point but it won't hurt anything. Replacing the worm gear is a very unpleasant job. I tend to replace the front and rear bearings, replace all the cam grease, and often just replace the pulldown claw if there is any visible notching on the claw, since to get to the worm gear you have to take the whole thing apart anyway. --scott _______________________________________________ FrameWorks mailing list FrameWorks@jonasmekasfilms.com https://mailman-mail5.webfaction.com/listinfo/frameworks