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Thread: Help with tapping threads

Created on: 03/23/15 05:14 PM

Replies: 29

Rook


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Joined: 03/28/09

Posts: 20589

RE: Help with tapping threads
04/30/15 7:03 PM

Thanks. Good to know. No harm done. I'll probably be making this bracket over again eventually.

Here's how to do it for normal people who own drill presses. Damn, I need a drill press next! Also probably need 3 hands to do this alone....unless I get a drill press vise. I need that too.

Yep, my 10mm tap has a hole in the top (also the bottom). I'd need to chuck that T handle with the chuck and get a normal T handle with the little screw in V groves that leave the top of the tap exposed.

lotta money but a lifetime of perpendicular threads.

BTW, almost done with the bracket that goes on the other side of the frame. I'll be using heat to bend the bracket to the correct angles. Hagrid, you recall we were talking about whether or not the bolt holes on the inside of the back of the frame are parallel? Well guess what, they are NOT. Close but a few degrees off. I believe most of the bolt holes in the frame are parallel but the tail subframe is not quite parallel to the main frame...so they made the bolt holes perpendicular to IT instead of the main frame. I noticed that the two angle irons used to make the bracket for the oil reservoir were not quite parallel to one another. you can see this in the pic of my hand holding the finished bracket showing the nut on the bottom. I tought it was just a fluke because the difference in angle is so slight but here we have the same thing on the other side. This will take some carful measuring to bend the preload control bracket. I have a cardboard dummy made up and I can clearly see the bolts go in at different angles. This is the kind of stuff that makes the difference between a part that fits perfectly and one that almost fits right.


* Last updated by: Rook on 4/30/2015 @ 7:26 PM *



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hagrid


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Location: pittsburgh

Joined: 02/16/12

Posts: 2210

RE: Help with tapping threads
04/30/15 7:24 PM

Heh heh. It's a two person job: one guy running the tap and another guy ten feet a way saying, "move the top away from you... no, too far. move back to you a little. wait... let me check left to right."

My dad and I have done this dance more times than I can count: sometimes he's spotting... sometimes it's me. It's for cutting threads, drilling straight holes, etcetera, etcetera...

You get the point.




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hagrid


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Location: pittsburgh

Joined: 02/16/12

Posts: 2210

RE: Help with tapping threads
04/30/15 7:27 PM

I believe most of the bolt holes in the frame are parallel but the tail subframe is not quite parallel to the main frame...so they made the bolt holes perpendicular to IT and not the main frame.

As I suspected.

Good research, D. Attention to detail.



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Rook


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Joined: 03/28/09

Posts: 20589

RE: Help with tapping threads
04/30/15 7:48 PM

D is for Detail!



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Rook


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Joined: 03/28/09

Posts: 20589

RE: Help with tapping threads
06/09/15 11:54 AM

Got them done. I painted them gold. I have an order in at ProBolt so I'll show pics when i get them bolted up.



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