The Chopper Compendium

I have been in the shop building my jig. It is a crime scene choppers knock off that I have done some slight changes to the prints.
http://www.crimescenechoppers.com/blog/jigplans/

It has been a 3 week process.

I started by cutting the two main slide rails.












I put one rail on top the other to insure same length.



















Did the same with the top rails.








I cut all the other pieces and sand blasted the ones that fit in the cabnet.
This took a long time!!!!








Then took the burrs off all parts.










All the parts blasted.








I then sanded them and the ones that would not fit in cabnet.









All the parts cleaned and ready for machining.

This took a long time!!!!








After 3 days machining!!!

I have all the parts machined. I love my Bridgeport Mill!!!





















Welding the top rails on.









Welded the frame together. Took longer than you would think to make sure straigt!!!!!








Showing rails true along top sliding edge.
















Welded plates to bottom of post. This is on of the mods I did by taping holes.








Fixed post in center of jig.
Matted to each other.














Made sure angles matched jig because table not leveled.












Other direction














Showing the are paralell














Welded the rear jig mount and made sure same as table. Measurement has changed because table was moved while welding.













Moved post and welded the other neck ficture to match.
Clamped together.










Clamps removed after welding













Installed all thread in neck.











Welding motor and rail fixture.












Fixture welded. This is one of the other mods made by making adjustable rails,









Jig done!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!



















What do you guys think?????

What are you waiting for? A pat on the back? Get to choppin.


Looks good.

I have been choppin!!

I just thought I would share how I did it for someone to have some insite on how I did it!!

I am fighting engineering a girder right now for my chop???

And Thanks!!!

I was just going through the build thread. Looking real nice. Excellent lines on your frame. Didn't we have a talk about flame thrower tips? Good luck on the girder, too.

YA you were the one guy who had any insite on how they worked!!

I might be able to make the combustion chambers on them straight with this bike!!!

I was listening to your sugestions just had this in the works so not ready to implement them!!

If I decide to put them back on!!

nice work I like how the posts slide on the bottom rails

Thanks!!

And thanks to Crime Scene Choppers for the prints!!

I have modified them to suit me!!

There is a link to prints on top of link!!
and here!!

http://www.crimescenechoppers.com/blog/jigplans/

This is perfection. And an awesome write up and pictorial as well.

Also, I have a question - Is the purpose of the top rails (the 1/2" by 2" flat stock which lays on top of the main rails of the jig) to keep the rails straight and in line with the center line?

Can we do without it?

I'm using a heavier wall than normal for the main rails (because it's what I've got) but I've noticed that even they aren't exactly straight and true. Flat stock on the top makes it even heavier and brings up the cost so I'd like to do without them, but not at the expense of precision.

What are peoples thoughts on this?

I'm going to start a new thread about this specifically.

A jig can be a straight chalk line on the floor or made from wood.

So, build your jig however you want just make it striaght when done.

A tube is not always round or square as it is extruded when made and rolled by a machine. That is the one reason fo the top 1/2 plates to give a more parrellel suface.

Do you want all my stuff on flamethrowers .... ?

do a write up id love to see that

To busy building cars .... I will send to Nathan if he wants and he can sort out what works ... It is info that has been collected over years of building street rods and customs ....