delrin rod

[Krawler Freak]

another way to do this is to buy 3mm setscrews 10 to 15mm long drill out the delrin then use an allen driver to screw them in (this is the easiest way i beleive)

you will have to drill a smaller hole than the delrin (enough so it threads but not to much it cause it to expand derasticly) , and cut the allthread to fit.

another way is to drill the delrin all the way through with a clearance hole for the allthread and put nuts on both the end to hold the allthread in place then simpaly screw your rod ends on

[carver]

drill a hole in one end of the delrin just enogh so that the all thread self taps the delrin then screw the all thread in the delrin about half an inch or so, then cut off excess and leave just enough so that the rod end will completly screw on.

[Headshok88]

Like this:

[twors]

Small Parts jacked my order and never did respond to my e-mails. I had no problems with Enco and I would recommend them. I used 5/16 rod, 8-32 set screws and Revo rod ends. I have a small Taig lathe which made it easy to whip up some links.

[j33pownr]

I will second the small parts being expensive after shipping and saying they have stuff in stock and then when you call to question where your stuff is over a week later they say it should be shipped soon. Then 3 weeks later they still havent shipped so I canceled my order. I do have to give them a thumbs up for customer service because it was no hastle canceling my order. Maybe cause they do it all the time and know the procedure from all the customers that go some place else.

[jwcustomwurks]

Originally Posted by difflocker

How would you thread this into the delrin?

I drill and tap my delrin

[mchester]

Any experience using 1/4" Delrin for links? Is this just too small?

[victionone]

Originally Posted by mchester

Any experience using 1/4" Delrin for links? Is this just too small?

Too small... they will break.

[binaryterror]

Originally Posted by mchester

Any experience using 1/4" Delrin for links? Is this just too small?

Originally Posted by victionone

Too small... they will break.

It's actually more the flexing that is the problem than breaking.

[Trugg]

Originally Posted by binaryterror

It's actually more the flexing that is the problem than breaking.

I agree...I have seen 1/4" delrin links flex over 90* in a bind...not good

[RAM2500]

I agree. 5/16 to 3/8 is as small as I would go. The smaller stuff works great for steering links though. It takes a beating and goes back into shape. I used an old crank pencil sharpener with an adjustable diameter dial on the front to put a bevel on the end of the links so that they narrow down to the diameter of the rod end. Worked great! My homemade delrin links on my beater are still the best ones I have used.

[Offroader5]

I use .250" tube. I cut them to length first, then run a drill bit down the center to open up the ID a little and then slide 8-32 down through the center full length. Then just thread on the rod ends (I use Revo's...hence the 8-32)

You can get tube from McMaster Carr.

Also FYI, thick walled tube vs. solid rod of the same diameter and same material, will usually be stronger. Just because it's solid and there is more material there, doesn't mean it's going to be stronger.

[binaryterror]

Offroader, since you use Revo Rod ends why not use 4mm?

And it is true a Tube is structurally stronger than a solid rod, and the steel thread will help with strength and limit flex as well.

[Offroader5]

Originally Posted by binaryterror

Offroader, since you use Revo Rod ends why not use 4mm?

And it is true a Tube is structurally stronger than a solid rod, and the steel thread will help with strength and limit flex as well.

It's essentially the same diameter really. I have used both, but 8-32 is usually easier to find in the hardware stores or Lowe's/Depot if I need it in a pinch. I have both 4mm and 8-32 hardware in my boxes, but in long lengths of rod I usually get the 8-32.

It's kinda funny...I use metric when I am building/measuring stuff out on my rigs, and use 3mm over 4-40 unless I absolutely have to, but for some reason I still use 8-32 over 4mm

4-40 is the devil :-P

[A_Jeeper]

I just got some 5/16 and the cheapest place was Industrial Plastic Supply, Inc. it was $0.58 per foot, but if you want 1/4 or 3/8 they were expensive. it came 4 pieces of 2 foot.