New differential mount bushings

[Blindcars]

I am finally getting the fact that nothing was ever really standardized when it came to the general fabrication of the WCM Ultralight. A shame in certain ways as consistency and standardization typically leads to lower production costs which might have led to more of them being out there.. Ah well lol, i digress and on to the point : The two welded in tubes that house the differential support bushings on my new chassis are a different size than the ones on the chassis that originally came with my car so i decoded to have Delrin bushings machined for the new chassis. Howevrr, before the Delron rod goes to the machinist i wanted to get some input on wether i should use Delrin or Polyurethane for them ?

Using Delrin, there will essential be tge same as using aluminum bushings there as Delrin has almost no compression characteritics. Polyurethane on the other hand has " some " compression characteristics. So my question actually is. : Will "rigidly " mounting the diff affect anything long or short term ? I know there is probably going to be more vibration transmitted to the chassis thru those two points than if using rubber but am i going to be placing more stress into the chassis ? Im also going to use the same material for the front diff mount ... Thoughts?

 

Next question is : should i use a steel sleeve in the center of the bushings to protect the amount " if any " that it can compress?

 

What have others used?

 

Thanks

Leo

 

Appreciate

[Dave W]

Leo

 

The Delrin material is typically used for bearings and is not compressable. I think your first choice should be the Polyurethane. I would also used a sleeve thru the center of the bushing, to support the load of diff mount troque and it would allow for some compression of the Polyurethane and plus any mis-alignment in the mounting brackets.

Dave W

[powderbrake]

Leo

 

The Delrin material is typically used for bearings and is not compressable. I think your first choice should be the Polyurethane. I would also used a sleeve thru the center of the bushing, to support the load of diff mount troque and it would allow for some compression of the Polyurethane and plus any mis-alignment in the mounting brackets.

Dave W

 

:iagree:

[Blindcars]

After lots more research i am in agreement and thanks for the suggestions. Im thinking about an 80 to 85 duro a hardness. Depending on the results after its on the road i mught have to revisit the hardness if the material. Good point on the inner steel bushing and i had already planned to do that . What do you think of the 80 hardness?

 

Leo

[Blindcars]

Sorry.. Typo. Meant 90 duro a