how do you lock the rear

[9W Monighan]

I would like to find a real super heavy grease , which would act like a limited slip differential , but so far no luck . Everything I came across so far was still to thin .


This is what I was going to suggest with stiff oil. My brother told me about this technique they use with their racing buggy's and trucks.
Try some silicone grease from the plumbers section at Home Depot.
There is a semifluid oil we use on our old Cats to lube the rollers. I think it is known as "00" semi fluid grease.
I have some of that and some Castrol Longtime PD O these greases are like vasalene consistancy.
Another grease to try may be the stuff they use on binocular and camera lenses. That would give a nice slow movement. There are different grades for varying temperatures the binos work at.