Pedal Rods Question

Hill Phillips · Post by **Hill Phillips** » 20 Jul 2003 3:08 pm

Are most threads on rods rolled or cut?
I have Two high speed landis threading heads that I have retired and am thinking about seting them up to thread pedal rods and pull rods.
Also what size rods are the most popular?
Thanks

C Dixon · Post by **C Dixon** » 20 Jul 2003 3:20 pm

Hill,

Like soo many things, they are not standard.
Same for the threads. Some are cut, some are rolled.

But most are 3/16 " SS and they have a 10-32 thread.

carl

Dan Dowd · Post by **Dan Dowd** » 21 Jul 2003 6:23 am

The changer rods are usually 6-32 and or 4-40. Some could also be 5-40. Most of the ones I have seen are rolled threads.

Bob Metzger · Post by **Bob Metzger** » 21 Jul 2003 11:33 am

Could you explain what "Some are cut, some are rolled" means to us in beginners machining class?

Thanks

C Dixon · Post by **C Dixon** » 21 Jul 2003 5:17 pm

Bob this is my understanding.

1. Cut is when they use a die or lathe to "cut" the threads.

2. Rolled means the threads are actually pushed up in a rolling twisting manner; that ends up with the threads actually greater in diameter than the rod was originally. I have also heard it referred to as "stamped".

Note some Emmons' LeGrandes I believe used this latter method.

carl

Hill Phillips · Post by **Hill Phillips** » 21 Jul 2003 6:48 pm

Carl, thanks so very much for the information and explaining the Difference between cut and rolled threads you did it so much better than I could.
Hill

Bill Moore · Post by **Bill Moore** » 22 Jul 2003 4:28 am

On the Carter, Emmons and Remington guitars that I've owned, the pedal rods are 5/32" in dia. with 10-32 threads. The threads are formed, not cut. I believe that it's done this way [rolled, or formed] because the process is more easily done on automatic machines. A 5/32 rod would be too small to thread with a 10-32 die.

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<small>Bill Moore...
my steel guitar web page</font>

John Fabian · Post by **John Fabian** » 22 Jul 2003 4:57 am

If the rod diameter is 3/16" (.188), the threads will be CUT. If the diameter is smaller (around .167) they will be rolled.

John Fabian

Hill Phillips · Post by **Hill Phillips** » 22 Jul 2003 3:43 pm

FYI
My 2 landis heads are on a double spindle machine that turns CONTINOUS, they open automatic for removable when the required amount of threads is reached. the threading tools are similar to a bar 3 inches long and about 1 1/2 inches Wide 1/2" thick with grooves equal to the threads per inch required the length of the bar. they are called chasers and 4 are required.
The operator don't get much idle time when operating both heads,