[OpenTrackRacer]

I just got a wiper motor from Monster Guts. I started working with it by attaching arm (made from flatstock) directly to the rotor. It works but can slip. I see the provided OEM stub arm has teeth to prevent this from happening. However, the other end of the arm is a permanently attached ball. Has anyone found a clean way of removing the ball so a bolt can be used?

Thanks!

 

[The Pod]

I haven't had a motor from MonsterGuts yet, but I've removed the ball connector from other motors simply by drilling it out. I was using a vise and drill press (not a hand drill).

 

[Otaku]

Sure have. Use a belt sander or grinder to remove the mushroomed metal opposite the ball on the arm. Grind it flush with the surface of the arm then clamp the arm in a bench vise, ball down. Use a 1/4" steel dowel pin (get one at the hardware store) to punch out the ball. You may need to twist the ball a bit with a pliers to break it loose from the arm before using the punch. When grinding, remember that the arm will get hot - use pliers to hold it.

 

[OpenTrackRacer]

That's what I figured! Well, I have a bench sander, a bench grinder and a drill press so I guess I'll go get busy!

Thanks!

 

[Diabolik]

Ha, I just did this very thing today. I ground of the head off on the bench grinder and then tapped out the pin in the vise using a pin punch. The grinder made short work of it.

 

[Xpendable]

You can use some lock washers on your flat bar. Also, make sure you make your hole in the flat bar just slightly small so that the shaft will self-tap a thread into the bar when you screw it on by twisting it. I've never had a problem with stripping except for a wiper motor that I had last year where the threads on the shaft were already stripped.

 

[kprimm]

You could also use a pvc arm and just drill a hole slightly smaller than the ball and force it through. It will hold very tightly and is very easy to do.

 

[BATFLY]

i use aluminum and tighten it down hard so it sort of imprints the groves or what have you onto it. no slippage that way. i think it helps that aluminum is a softer metal. i have also removed the ball using the drill press method. go slow and careful if you go that route, sucker gets hot.

 

[OpenTrackRacer]

A minute with the grinder and a minute on the vise was all it took!