machined pins for uniball uppers

[bee-line]

I have a friend that bought an upper arm lift kit w/ a 1" horizontal uniball (vertical bolt) for a ranger EDGE. The balljoint hole is too big to tap for the 3/4" bolt that is supposed to go into the spindle. misalignment spacer is for 3/4" bolt, hole in spindle is .77" or so (with pinch bolt removed) I want to see if I can get a pin machined to fit the spindle/upper arms. The builder of the kit reccommends milling a hole in the spindle to fit a nut inside to hold the bolt, which seems unsafe to me.

I guess my question is: do I have the pin machined from 17-4 & heat treat (we have ovens here where I work & we normally heat treat to H900 (Rc 45/47) too brittle? or would another (chromo?) material be better for this application? I plan on just ball milling a small slot for the pinch bolt to pass thru, instead of turning the radius on a lathe & reducing the dia. all the way around the pin.

I hope all that made sense, and sorry for the long post.
thanks in advance for any responses.

-Brandon-

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[RocketMan]

Sounds like a solid plan to me we use 17-4 H900 -1025 here at work for many custom bolt/pin applications ...

[ntsqd]

Second the H900. My last employer used 17-4 in that condition for all of the production tooling clamp bolts.

[bee-line]

okay, thanks guys...I was hoping for at least a couple responses from people on this board that I feel like I can trust thier opinion...and I got it.

we use H900 17-4 for most of our tooling here, and in production parts...(we make load cells) but I an just a lowly drafter, so I don't have quite the knowledge in engineering/mat'l strength calcs and all that smart guy stuff....looks like this is the way to go

thanks again.

[mfs]

i have done this and it works out good. drill it out to 1" and tig weld a 1" x .120 wall 4130 tube which is 3/4 i.d. thats the easyest way.

[bee-line]

I don't want to weld to the cast spindles. I know it can be done, but I also know that it can't be done by me. also, what am I supposed to do with a 3/4" i.d.? how do I hold the pin or bolt??

[mfs]

Its cast steel not cast iron you can weld on it. you could get it all ready and have someone weld it. If you did it my way you would just put a bolt and nut though the whole thing. Or maybe im missing something? Can you show us some pics? Making a heim adapter would be nice too. i would make it out of 4140.

[dezertdude]

The ranger spindle is'nt setup like your thinking mfs. Chevy spindles you could drill out like that, for instance. Kinda hard to explain, but there is no open end on a ranger spindle. There is no nut for the BJ, it uses a crimp/bolt-sleeve mount.

[Ryan_P]

Same concept here.

-Ryan