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DJ Mod Question

564 Views 11 Replies 6 Participants Last post by  Capt Cruiser, 
GeorgeF
Doing the DJ Mod on an 06 C50. I read the instructions several times but I have a question if anyone knows please.

I'm going to modify my current C50 drive shaft. Once the 3/16 is trimmed from the end, does it need to be rounded slightly like the original? See pic attached.

Also, I live in Western PA. I can cold call a machine shop I guess, but is there anyone around my area that has a recommendation for this, or is there someone I can send it to for machining that knows the deal?

Thanks

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Whiskey
Welcome from Kennesaw GA!

I'm afraid I don't have the answers to your questions, but hang out a bit and someone who does will probably come along.
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Skrapiron
It is not the END that needs to be shortened, but the SHOULDER of the splines that needs to be cut back 3/16". Just cutting the end will still make it too long and cause the shaft to catastrophically bind.
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Capt Cruiser
They both need to be pushed back 3/16"

A chamfer on the end of the shaft to the bottom of the splines will help during installing.

.
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GeorgeF
Yeah, I know the shoulder needs shaved back 3/16 also. I don't have any questions about that.

But when the end gets trimmed off 3/16, the end of the shaft will be flat across. Do the edges need to be rounded off a bit like the original pic I posted? That's my question.
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Capt Cruiser
No they don't need to be rounded, but make sure your deburr them with a file after you add the chamfer.
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GeorgeF
Good to know, thanks!

After I add the what? You lost me there. Maybe a typo? Chamfer?
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SSquire
It isn't rounded, it is chamfered. (Google is your friend if it is a new term) The flat corner around the entire circumference is cut off at a 45-deg angle. This allows for easier insertion without perfect alignment.
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Whiskey
SSquire said:
This allows for easier insertion without perfect alignment.
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That's what she said.
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GeorgeF
Okay, so I learned a new word, thank you!

So who adds the chamfered edge? The machine shop when they trim off the edge? Or me after I get it back with a file or something?

This wasn't mentioned in the DJ Mod instructions.
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Rob 61
Whiskey said:
That's what she said.
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Well, it comes that way :eek:
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Capt Cruiser
GeorgeF said:
Okay, so I learned a new word, thank you!

So who adds the chamfered edge? The machine shop when they trim off the edge? Or me after I get it back with a file or something?

This wasn't mentioned in the DJ Mod instructions.
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Have the machine shop do it when they cut the end back.
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