SDSSmith wrote:The new crank offers greater leverage than the old crank. I also liked the indexing feature of the original crank but am happy with the Model T crank.
Humph!!! If the threads are kept un cruded and the chain properly adjusted(jack screws in sync), the shorter round one works very well IMHO. Making sure the table support/jackscrew do-hickeys are free to move is also relevant.
Now let the crud build up and the chain slip(on one or more sprockets) then the force required to raise/lower is greatly increased.
When all is right, it turns quite freely.