Originally Posted by AutoGear
Chrome Reverse Dish rims.
I saw a 1970 Impala the other day with CRDs, no caps - just the small 'dust cap' on the front, and no cap on the rears (to show off the moser M)
I know how they're made and several old timers here (who have sadly left the party too soon) Said these rims were a royal ****** because they would wear out rear axle bearings sooner than later (Im assuming that reversing the center throws the whole thing out of balance more than the bubble balancers of the day could account for?)
My grandad was the head welder for Carrier for almost 40yrs right after WW2; and he used to do a lot of this stuff out of his barn/ fab shop. Widen rims, fix blocks and heads, split manifolds etc. He's gone now and too many questions I never thought to ask
Now I know things vary by region and that 'reliving history through pictures' can be dangerous, because people can find a picture of almost anything and insist that was 'traditional'.
So; when were these the most popular, what were the problems and what are some things you see today in regards to this that just weren't done and aren't 'period correct'.
I woulda asked on the HAMB, but their collective viewpoint seems a little skewed at times. Too many guys my age who read Ol Skool Rods, cuff their jeans and have 3 grand in tattoos and pompadours who 'know'
Reversing the rims moved the tire centerline outboard of the wheel bearings, which for good engineering on the front will be between the inner and outer wheel bearings perhaps favoring the larger inboard bearing; for the rear over the outside wheel bearing. When the tire centerline, which is also a reasonable assumption of the load carrying center for the tire, is moved toward or outboard of the bearing it creates what is called an "overhung moment" on the bearing. What this does is to multiply the force on the bearing by the distance the load center is moved away from the bearing. A common example of this is torquing a bolt where becomes easier to develop the needed load as the wrench handle used gets longer. So it is this multiplied load created by the load center distance from the bearing that kills the bearing. You, also, have to keep in mind that in the 1950s and into the early 1960s many cars still used single row ball bearings not roller bearings. Most rear axles used a single row bearing inside a leather oil seal that was lubricated by what passed for EP gear oil of the day at 90 to 140 weight, imagine getting that stuff to lubricate gears let alone a bearing 3 feet from the axle sump on a winter's morning. Up front there would be two ball bearings in the hub, a smaller outboard and larger inboard both lubricated with short fiber grease that was again contained by a leather grease seal that was also expected to keep water out. So with all these structures right on the edge of the loads they could carry in stock form it is little wonder that they survived at all when a reversed rim was hung on them.
Yes wheel balancing was usually done on a bubble balancer if at all. Although a spin balancer came into use during the 50ís that spun the assembled tire, wheel, and brake drum while on the mounted on the car, this was an expensive process that the average guy couldnít afford.
Angel hair is simply unchopped fiberglass, it was used by customizers on back window trays of their cars for some reason; as well as under the then popular aluminum Christmas tree with a spot light that illuminated the tree through a rotating color wheel.
When I was in high school, 1955-1959, I had a 53 Merc rag top, lowered with a 55 Lincoln 341 punched an eighth. It had chopped wheel wells to fit reversed rims, this was exactly the opposite of what was done in that era to close the rear wheel wells with fender skirts. The rims were painted black with chrome deep dish beauty rings, a chrome cone hub/axle cover with a chrome 5 bolt spider that covered the lug nuts with a small cone of similar shape to the larger hub/axle end cover. Living in outside of San Diego it had the obligatory TJ tuck and roll they filled it with foam rubber, I think the place was called Exclusive in Tijuana. Funny I donít think Exclusive is the right name but I canít grab it but I know/knew it, puff. Old age is a b%%%%. All I remember is they came highly recommended and did super work.