issolating differential

[rickf]

ohio mg man--do you think i could achieve a similar improvement with lexan, or perhaps the heavy rubber setting blocks we use in the commercial glazing industry? the blocks come in a variety of thicknesses, and are 1" X 3 " in length. they are very difficult to compress, as they are designed to support large glass units that weigh in excess of 400 lbs.

Lexan would seem a bit "stiff" for that. A polymer like polyethelene seems to work out just fine. Rubber seems like it compresses too much. I dunno. You can find conveyer belting with nylon cording in it for sale. It is a bitch to cut. Thick rubber is a bitch to cut no matter what. I liked the Delrin because it had SOME give and I could mill the holes on my Bridgeport and cut them to size with a bandsaw. It was not that expensive to buy..look for a place that has something in "small scraps."

Than all you need is a Bridgeport!

Rick

[ppauto]

I found some 1/16" thick nylon flat washers (1 1/4" diameter) in the Lowe's specialty fasteners section. I installed my rear diff. with those. I used 3 nylon washers at each mounting point, between the diff. and mount , above the mount and below the diff. with steel flat washers at the outer ends. we'll see how that works.

[rickf]

Keep in mind that those washers are going to slide on each other and you will get side to side motion. I would keep a very close watch on it to make sure you are not egging out the holes in the diff or breaking the mount from the bolt rocking.

Rick

[ohiomgman]

ohio mg man--do you think i could achieve a similar improvement with lexan, or perhaps the heavy rubber setting blocks we use in the commercial glazing industry? the blocks come in a variety of thicknesses, and are 1" X 3 " in length. they are very difficult to compress, as they are designed to support large glass units that weigh in excess of 400 lbs.

Lexan would seem a bit "stiff" for that. A polymer like polyethelene seems to work out just fine. Rubber seems like it compresses too much. I dunno. You can find conveyer belting with nylon cording in it for sale. It is a bitch to cut. Thick rubber is a bitch to cut no matter what. I liked the Delrin because it had SOME give and I could mill the holes on my Bridgeport and cut them to size with a bandsaw. It was not that expensive to buy..look for a place that has something in "small scraps."

Than all you need is a Bridgeport!

Rick

A drill press would work fine. I just don't have any BIG drill bits. I do have lots of end mills.

[ohiomgman]

Keep in mind that those washers are going to slide on each other and you will get side to side motion. I would keep a very close watch on it to make sure you are not egging out the holes in the diff or breaking the mount from the bolt rocking.

Rick

BINGO! Seems a better idea to make your "isolaters" from one piece of... something because of THAT. You will need longer bolts.