RE: Short Hub Needed for G38
Horizon got out of the short hub business several years ago.
Unfortunately, you will have to look for a used one.
There is a basic design flaw in all the Horizon hubs for the Zenoah's in that they have a steel bolt threaded into the aluminum hub that is removed/replaced every time you change a prop.
Be smart and put a stud in the hub with a nut on the front. You'll never have hub trouble again,.