welding bars together?

[Michael Hohmann]

the whole idea on welding for example rad crows or other backsweep bars confuse me, i cant understand how you would keep everything semetrical and even.. is there somekind of welding mold or vice grips, it would be appriciated if someone could explain this to me. thanks

 

[notaek]

you need a jig to keep everything straight im pretty sure

 

[Robert]

you need a jig to keep everything straight im pretty sure

You don't need one, but it makes it a lot easier.

 

[Carson .]

If your makin more than one, you should take the time to make a jig otherwise it's like starting from scratch each time.

 

[Broccoli1]

http://www.google.com/search?q=weld...sn3igLL3IGQBA&ved=0CAkQ_AUoAQ&biw=768&bih=928

 

[Michael Hohmann]

thanks guys really appriciate this!

 

[instinctscooter]

this sounds real nooby but do you sort of drill away a certain size hole at the top or something so that the cross bar sits 100% straight?

 

[Broccoli1]

this sounds real nooby but do you sort of drill away a certain size hole at the top or something so that the cross bar sits 100% straight?

Yes.

T-Bars:
2 ways to do it:

*Drill a hole through the Down tube and then just slide the Crossbar through the hole and weld. This leaves a bit of the Down Tube on top so the bars are not smooth all the way across.

*Notch the Top of the Down Tube so the Cross bar rests on top of the Down Tube and then weld.

Both of the above only require a simple Jig to hold the bars in a T and keep the Cross Bar at a 90˚ to the Down Tube. You don't really need a jig but if you are making quite a few it helps speed up production. Time is Money.

Drop V and similar style bars that use 2 pieces to make the Cross bar a more complex jig is required because 3- separate pieces need to be held in place, either with no back sweep or with back sweep.

You can google Tube Notching to see how it is done with a Tube Notcher or with a saw.