walking beam axle suspension question.

[rasorbackq]

Planing on building a multi use trailer with a walking beam suspension. My question is I plan to use 2 x 3 x 1/8 " wall tubing but how do I make the holes through both sides of the tube for the stub axle? I have never seen a 1 3/4 drill bit . Would a bi metal hole saw drill through the tubs? Or is the a better tool?

 

[oldnslo]

A hole saw at slow RPM,s will cut through 1/8" steel. Biggest problem is usually chip removal, the saw teeth load up you have to raise the saw out of the steel, clean out the chips and then start drilling again.

 

[Kernopelli]

I have used bi-metal hole saws for a number of projects and recently used them to cut 2", 3", 4" and 5" round plates out of 5/8" steel for shooting targets. 1/8" is a breeze. As oldnslo stated, slow RPM and cutting fluid/oil will allow many uses from even "cheaper" brand name saws.

If you want to use a regular bit, silver and deming reduced shank bits are available but I would hate to guess what a quality 1/2" shank x 1 3/4" bit would set you back ( $100+?).

 

[BHD]

drilling a small hole on the edge of the track that the hole saw is making, will give a place for chips to work out of, and most likely will not over power a home shop drill press,

ENCO does/did sell 1 3/4" bits but one most of the time will still have to step the drill sizes, to be able to dill the hole if you can get your hole saw close that is most likely the easiest way,

 

[Steve_Miller]

Hole saw would be the best unless you can access a 1 3/4" bit, but which ever you use to drill with, make sure you are clamping everything firm as a hole that size requires a lot of torque. When I built my walking beam I had access to a machine shop and used the same tubing as you are but I had some shoulder spacers made to stiffen the wall of the tubing where it is welded as I didn't think it would stand up the the weight that it would see and I only used 1100lb axle stubs. I will see if I have any pictures of my beams when I was building it. Grandson is asleep in the computer room right now.

Steve
Nova Scotia

 

[cockeyedMFer]

Something like this might be best, but they're pricey. Annular cutters are more stable and cut more accurately


Milwaukee 49-59-1750 1-3/4" x 1" HSS Annular Cutter - Amazon.com

 

[jemclimber]

Doesn't the stub axle get welded in? Why not just take a piece of pipe for a guide and cut it out with a torch. Much, much faster.

 

[rasorbackq]

Your right a torch would be faster ......... but I don't have a torch. But I did buy a hole saw today.

 

[ericher69]

Your right a torch would be faster ......... but I don't have a torch. But I did buy a hole saw today.

Before you venture into this call around.

Don't know the price/quality hole saw you bought but it MAY be cheaper and safer to have a machine shop drill the holes for you!

Granted you can bring the pieces to the shop...just a thought.

 

[R W]

A Super Drill from PracTool | Home would be a good investment.

 

[JimAnderson]

Planing on building a multi use trailer with a walking beam suspension. My question is I plan to use 2 x 3 x 1/8 " wall tubing but how do I make the holes through both sides of the tube for the stub axle? I have never seen a 1 3/4 drill bit . Would a bi metal hole saw drill through the tubs? Or is the a better tool?

A bi metal hole saw will work fine.If you have drill press even better.Just go slow,200RPM or less and use plenty of oil.
Luck,JimAnderson

 

[rasorbackq]

So I bought a 2x4 steel tube and a 1.25 hole saw. drilled the 8 holes Little sloppy but I could see the saw was slightly out of round as it spun.
Had some issues with the drill press at 195 rpms the belts would spins with very little presser on the bit. Increased it to 300 where the belt was a little tighter.
Been looking at different designs for these axles . Seem one with a zerk fitting built into the pivot point. Grease fitting drilled into the axle end??
What is that called so I can source them?

 

[orezok]

So I bought a 2x4 steel tube and a 1.25 hole saw. drilled the 8 holes Little sloppy but I could see the saw was slightly out of round as it spun.
Had some issues with the drill press at 195 rpms the belts would spins with very little presser on the bit. Increased it to 300 where the belt was a little tighter.
Been looking at different designs for these axles . Seem one with a zerk fitting built into the pivot point. Grease fitting drilled into the axle end??
What is that called so I can source them?

After the pilot bit punctures the steel, remove it and replace with a piece of smooth rod. The sides of the drill bit will cut an oversize hole and make the saw wobble.

 

[CDN Farm Boy]

After the pilot bit punctures the steel, remove it and replace with a piece of smooth rod. The sides of the drill bit will cut an oversize hole and make the saw wobble.

That's an interesting idea, never thought of it. I've hole-sawed more holes than I care to count, hand-held is a pain to keep steady and hard on the wrists when (not if but when) the bit binds. I'm glad I have a heavy duty Metabo drill with clutch (no, not the kind of clutch on your cordless) Drill press is much better. I'll have to try this next time to see if I notice a difference.

 

[rasorbackq]

After the pilot bit punctures the steel, remove it and replace with a piece of smooth rod. The sides of the drill bit will cut an oversize hole and make the saw wobble.

Don't think that was the case here The pilot bit was straight it was the saw that was just a bit out of round. What do you want for $8.00