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Re: Factory Works 180* Steering Bellcrank Build

Posted: Tue Nov 20, 2018 9:41 am
by NomadRacer
GoMachV wrote: Tue Nov 20, 2018 9:39 am Lunsford has titanium wide axles in stock also, I grabbed a couple pair for my rigs. They are labeled for the gt I think
Thanks Jeff! I'll check with Barbara about getting some.

Re: Factory Works 180* Steering Bellcrank Build

Posted: Tue Nov 20, 2018 11:19 am
by XLR8
Front axles are relatively easy to make on the lathe Nomad. The only tricky part is drilling the hole for the hinge pin as it has to be located perfectly or the pin could bind when everything is assembled. It's probably best to make a drilling fixture to prevent the bit from wandering off center.
I'd bet you could make a set of axles that would be absolutely stunning!

Re: Factory Works 180* Steering Bellcrank Build

Posted: Tue Nov 20, 2018 12:11 pm
by jwscab
Yeah a v block and center or spotting drill in a drill press works well. I just made some associated pairs for Joey King, as well as losi/trx pairs.

Re: Factory Works 180* Steering Bellcrank Build

Posted: Tue Nov 20, 2018 12:31 pm
by NomadRacer
XLR8 wrote: Tue Nov 20, 2018 11:19 am Front axles are relatively easy to make on the lathe Nomad. The only tricky part is drilling the hole for the hinge pin as it has to be located perfectly or the pin could bind when everything is assembled. It's probably best to make a drilling fixture to prevent the bit from wandering off center.
I'd bet you could make a set of axles that would be absolutely stunning!
I think I can make them, drilling and threading the end either 5-40 or 4-40 (which ever you like) with no problem. I do have a chunk of 1/4" and 5/16" Titanium rod (prefer over alum.) in my stash.

Re: Factory Works 180* Steering Bellcrank Build

Posted: Tue Nov 20, 2018 4:04 pm
by jwscab
Drill and tap to take a screw rather than a make thread.

Re: Factory Works 180* Steering Bellcrank Build

Posted: Tue Nov 20, 2018 4:55 pm
by XLR8
jwscab wrote: Tue Nov 20, 2018 12:11 pm Yeah a v block and center or spotting drill in a drill press works well. I just made some associated pairs for Joey King, as well as losi/trx pairs.
jwscab wrote: Tue Nov 20, 2018 4:04 pm Drill and tap to take a screw rather than a make thread.
Hmmm, those are some great suggestions Joe.
Makes me wanna fire-up the lathe and try them out.
I don't have a v-block but I could improvise/fab something equivalent. :D

Re: Factory Works 180* Steering Bellcrank Build

Posted: Tue Nov 20, 2018 6:49 pm
by jwscab
I've just used a vise before and clamped it to the press table. All the magic is setting up the centerline. Well, the second piece of magic is the stubby drill to prevent wander.

Re: Factory Works 180* Steering Bellcrank Build

Posted: Tue Nov 20, 2018 7:08 pm
by NomadRacer
Yep, stubby, or sometimes called machine screw length drill bits are a must, they're all I have. Go for solid carbide bits for rigidity.

Re: Factory Works 180* Steering Bellcrank Build

Posted: Tue Nov 20, 2018 7:47 pm
by jwscab
If you use a center drill it's even better. I think a #2 is the right one. A spotting drill is the 'correct' tool though.

If you don't have any, you should use them with your lathe, for center drill or making a 60 degree pilot for a live center

Re: Factory Works 180* Steering Bellcrank Build

Posted: Tue Nov 20, 2018 8:55 pm
by XLR8
I don't know what these are called but this is what my Dad had in his shop.
He was an amazing guy; without any formal machinist training, he could make anything on a lathe and a bridgeport.

Re: Factory Works 180* Steering Bellcrank Build

Posted: Tue Nov 20, 2018 10:25 pm
by jwscab
Those are center drills, and you appear to be holding a #1. They are generally used when making a 60 degree pilot in the end of stock so it can be supported in a tail stick with a center.

Re: Factory Works 180* Steering Bellcrank Build

Posted: Wed Nov 21, 2018 6:25 am
by NomadRacer
jwscab wrote: Tue Nov 20, 2018 10:25 pm Those are center drills, and you appear to be holding a #1. They are generally used when making a 60 degree pilot in the end of stock so it can be supported in a tail stick with a center.
Yes, center drills and a nice vintage looking set. They'd look good in any tool chest. :mrgreen:

Sometimes you have to use the tools you have to do a job, like using a center drill to do a chamfered hole. Is it the right tool? no. But it'll get the job done.

Re: Factory Works 180* Steering Bellcrank Build

Posted: Wed Nov 21, 2018 9:14 am
by NomadRacer
Small update for today, working on the trailing arm pivot post...

The first thing I do is remove any flashing from the posts. This is so they fit in my ER16, 1/4" lathe collet nice and true. I use diamond coated files to get the job done.
C2180TrailingArmPivotPost.jpg
Now, I head to the machine shop for some "groovy action". First, I turn the post to make it true. This is done with light cuts, 0.001-0.002" at a time. Next the grooves. I come in 0.050" from the end and cut four grooves, 0.030" spacing, 0.060" deep. They look pretty good to me. Finally, I use a 1/8" hand chucking reamer to remove any internal burs in the hole. I'll continue working on the posts till they are all nice and shinny, well, not a true shine, a sort of fine brushed finish is what I'm after.
C2180TrailingArmPivotPost2.jpg

Re: Factory Works 180* Steering Bellcrank Build

Posted: Wed Nov 21, 2018 12:05 pm
by orangemazda
Where did you get the cool nose tubes?

Re: Factory Works 180* Steering Bellcrank Build

Posted: Wed Nov 21, 2018 5:10 pm
by NomadRacer
orangemazda wrote: Wed Nov 21, 2018 12:05 pm Where did you get the cool nose tubes?
I made them myself.