Pin drive bolts splitting Help Please

[Silverback51]

Originally Posted by David Kirkham

Gents,

Ok, I finally finished the quote.

Here it is.

We can do the pins (like in the CAD drawing above) for $10 each. The cost is driven by the high cost of the raw material and the heat treating. There is quite a bit of handling involved to make a really nice part. I don't think the pins that you guys have are heat treated from what I can gather--but I would have to check the hardness on one to know for sure.

First 10 SALE:

For the first 10 CC members who purchase a set of 20 each, I will sell them for $7 each.

Now, I need to add:

We need 10 sets ordered before we can start the run so it is cost effective to do the programming, set up and first run. So, the 10 sets have to be all the SAME set! For example. 10 sets of the Trigo type with the taper on them--1/2-20 thread.

We will also extend this sale to 10 sets of the Vintage type (which from my understanding is flat--no taper--and has an M12 thread.

If I am wrong LET ME KNOW!

Production will begin after 10 sets are ordered and I confirm the angle from CNG's adapter.

David

What grade of stainless material and what hardness for the heat treat?

[David Kirkham]

17-4 Ph H900

[butz999]

I have brand new vintage wheels and adapters my pins are tapered just like a standard lug nut,are they different styles?

[Larry N Johnson]

Originally Posted by butz999

I have brand new vintage wheels and adapters my pins are tapered just like a standard lug nut,are they different styles?

I can not fathom a flat pin. Would they not have to be tapered to "center" the adapter?

[David Kirkham]

Anything you could bring by would help to solve this!

David

[Dominik]

The adapter is centered by the hub - or isn't it?
Different from manufacturer to manufacturer...

I have a pic which shows a TRIGO and a Vintage. I try to add it to my gallery.
You can just see that the Vintage (shiny) has "flat" holes.

Dom

[butz999]

the vintage adapter is hub concentric (spelling?) meaning the hub helps support the load but the holes are tapered

[Dominik]

There is a flat pin from Vintage, maybe not available in the US, only in South-Africa.
It's also shorter!

You should ask the dealer in the US. Also for amounts he needs! :-)

The metrics are for Backdraft' BMW suspension. Do they also have a problem with pins?
Ask Tony Martin or Reg.

For those who need a shorter pin, you could shorten them on a lathe on the taper side to keep the hex.

As for material, CAV uses EN8, if I am correct. I can check next week.

Dom