filing flats on a socket

You got one of those 12 spline 20mm antiques?? Try a 3/4" AF coupling nut drilled out to fit over the axle if necessary - I believe the coupler nut for 1/2" allthread is 3/4" 20mm is .787 so it is about .030" smaller but it might kust be big enough to grab 6 of the 12 splines and get it off. ================================================

The 1/2-13 all-thread coupler nuts I bought from a US hardware store measure

11/16", unlike the 3/4" nut standard.

An aluminum blank for the tool could be pounded into the freewheel to mark the spline groove positions and then planed in the lathe to extend them with a cutoff bit turned horizontal. I'd rough out the grooves first with the Dremel and a metal-cutting saw instead of an abrasive, to protect the lathe.

The handwheel carriage feed doesn't have much power to shave steel axially so it's best left for 0.001" finishing cuts. Aluminum is much easier.

If the aluminum tool isn't strong enough as a wrench it could be mounted on a mandrel beside a steel blank and used as a guide to copy.

I was using a 1" to 3/4" square drive adapter from such a store on a neighbor's truck lug nut and sheared it off. The guys watching were VERY impressed that I'm that strong, not knowing the adapter was weak instead.

The same happened to me in the Army. Paint obscured the L on a truck wheel stud and a friend and I stripped it by wrenching the wrong way. When I admitted what I'd done without implicating the helper the mechanics' attitude toward me jumped from dismissive to respectful, and they taught me a lot about maintenance, such as how to replace that flat tire on a split rim wheel.

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For those still following this... I suspect this may have been the correct tool in 1984: === BR SHIMANO ''BOSS" FREEWHEEL REMOVER,

For the removal of Shimano's standard freewheel of yester-year.

Item No: BR-CT4

19.5mm diameter

$3.70 ===

From an old 1984 Third Hand Tools catalog on Archive.org here:

My adapter/removal tool is for the old Shimano SIS models and is slightly bigger, more like 22mm...

I have no scientific answer or explanation, but my gut feeling suggests parallel.

BTW: Those sockets are really hard. Filing might be near impossible. In a similar application, I used an angle grinder.

Splines are 20mm spec, measure 20.2. I have a socket that's 19.97. Happens to be 9/16 but I don't care, just want the outside right. The

14mm was a wee bit smaller.

It's soft now, drilled it already to clear the bolt shank. It'll be hard again later.

The Google Fu is strong with this one.

Who knew that melted potmetal rebar was that weak? Congrats on the strength, too. ;)

Deuce and a half split rims? PASS. Those could be deadly as you seated the bead. I know a guy who rode one and lived. And I saw a video of one take a guy's head clean off. If they taught you split rim stuff, I'm not so sure they were respectful. LOL

Deuce and a half split rims? PASS. Those could be deadly as you seated the bead. I know a guy who rode one and lived. And I saw a video of one take a guy's head clean off. If they taught you split rim stuff, I'm not so sure they were respectful. LOL

The bulged pipe and rebar cage for inflating them clearly showed what can happen, and they made sure I understood the procedure.

If you don't have a proper cage, for ceying out loud use LOTS of strong chains!!!!

I was working in a tire shop (half a century ago) when one let loose in the cage. Very impressive sound and fury. Since then, I don't drive next to trucks.

I was working in a tire shop (half a century ago) when one let loose in the cage. Very impressive sound and fury. Since then, I don't drive next to trucks. ================================= They showed me how to confirm that the ring was fully seated all around, basically hose & brush all the mud off before starting, but I also no longer drove beside trucks unless there was enough space to quickly pass.

Another motor pool lesson was to use only soap or talcum powder, never petroleum grease, when installing a tube or seating the bead on a drop-center rim. I later caught flak from a boss who suggested grease when I was fixing power wheelchairs. Eventually he walked by muttering about You Damned Army Guys, as though someone else had agreed.

Bikes have some of the most screwed up threads and dimensions for parts. The goofier the better - we're talking stuff like british threads with strange inch pitches with a metric diamter.

Yeah. This was back in the '70s, before cages were mandatory. Are split rims even allowed on the road any more? LOL

In 1963, I was driving (actually, living in) a baffed out Metro bread van, reliable and idestructable. And no spare. Big ol' 17" tires? Who needs a spare?

And one night, about 8:30, 100 yards from a service station that would be closing in half an hour, I had a flat. Went into the garage, asked to get the tire fixed. No way, won't do it. Why not, I ask.

And the guy just points to the 20' ceiling where there is a deep circular indentation made by an escaped split rim. I hadn't known about split rims before that.

(All was well, though. He called some old guy out in the woods who came into town, fetched me and my tire, took me to a dimly lit barn/workshop with other old geezers hanging about smoking and drinking beer, fixed the tire with nary a quibble about afterlife and took me back to my truck. And no, he didn't have a cage.)

Yeah. This was back in the '70s, before cages were mandatory. Are split rims even allowed on the road any more? LOL

Cool. Did he do it upside down, with the split ring on the bottom, using a remote air chuck? It's a lot safer that way.

I'd love to get ahold of an old Morris J type vans, like this green '57. I'd make it an electric veeHICKle. (Prettier face than Metro.)

Don't know. Over 50 years ago, y'know? Having been warned by the gas station guy, I was at the other end of the dimly lit shop, talking about pipe tobacco with one of the geezers who thought it was cool that a young guy smoked a pipe.