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Rebuilding Hi-E hubs?

Old 08-13-23, 04:58 PM
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Originally Posted by bulgie
Loctite has a dizzying array of formulas and I don't claim to know which is right for this app, but I've found 603 to be amazingly strong. It's green, a bit goopy (not runny), fills gaps OK.
603 is commonly mentioned as an all-purpose strong adhesive by machinists. I was a machine operator (not a trained machinist) for over 20 years but most of what I know now, I learned in the college of YouTube. So take what I say with a grain of salt.

Toughened epoxy like JB Weld is pretty strong too though. I wouldn't wager much on a guess as to which one is stronger.

Loctite 603 can be loosened with heat, if you ever need to. JB Weld would probably have to be machined out if you ever want it apart.

That's all I think I know (I think)!

Mark B
I checked Permabond's site for adhesive recommendations, and it recommended a retaining compound. It suggested HM162.

Loctite does have selector guides, and I worked through their choices.
This is the start of the selector guide, for those of us in North America.
It ended up recommending four products, all of which were unknown to me (not a huge surprise, considering how large of a variety of adhesives that they make).
Here's the list: Loctite EA 9460, Loctite AA H8500, Loctite AA 331, Loctite EA E-90FL

They are in the category of two part epoxies or stuff like that.
I might have to see if any of these are generally available and what the price is. Most are usually pricey. Samples are available, but that's a bit unethical for a hobbyist guy who has no commercial applications or hope for future sales.

I'll have to look up Loctite 603 and see what it is. If I can pick up a little bottle at the hardware store, it might be worth experimenting with.

I'm still hoping that someone has experience with gluing these pins back in. Considering how many stories I've heard about them coming loose, there must be someone who's given this a shot before.

Steve in Peoria
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Old 08-13-23, 05:11 PM
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Originally Posted by steelbikeguy
I'm still hoping that someone has experience with gluing these pins back in. Considering how many stories I've heard about them coming loose, there must be someone who's given this a shot before.
I got one (swap meet maybe?) with the pin missing, and also no cone for the other end. I drilled the piece where the pin fell out, a through-hole big enough to slide a 5 mm allen wrench in as a lever. Not great for mid-race wheel changes of course, ya gott get your 5 allen out of your bag. But I always carry one anyway, so this isn't extra weight to be counted against the skewer, weight-weenie-wise.




For the replacement female-threaded cone, I McGuyvered this:



Quiz, anyone know what part this was?

Mark B
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Old 08-13-23, 05:26 PM
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Originally Posted by steelbikeguy
I'll have to look up Loctite 603 and see what it is. If I can pick up a little bottle at the hardware store, it might be worth experimenting with.
McMaster has a small bottle for $22 plus shipping. cheaper at Amazon, but your tarnish your immortal soul when you buy from them (also they often sell counterfeit products).

But they list 603 as being for tight-fitting parts. If you want to fill a loose fit (up to .020"), according to McMaster you want Loctite 660. A very small tube is $12 plus shipping. Shear Strength 2,490 lbs./sq. in., sounds like it should suffice even though your surface are being glued is way under one square inch.

Last edited by bulgie; 08-13-23 at 06:26 PM.
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Old 08-13-23, 06:31 PM
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Originally Posted by bulgie
McMaster has a small bottle for $22 plus shipping. cheaper at Amazon, but your tarnish your immortal sould when you buy from them (also they often sell counterfeit products).

But they list 603 as being for tight-fitting parts. If you want to fill a loose fit (up to .020"), according to McMaster you want Loctite 660. A very small tube is $12 plus shipping. Shear Strength 2,490 lbs./sq. in., sounds like it should suffice even though your surface are being glued is way under one square inch.
My plan is to swing by the hardware store and see what sort of 3/16" stainless screw/bolt they might have that will allow me to end up with a 26mm plain cylindrical section. While I'm there, I might as well see what suitable adhesive they've got. They seem to favor the Perma-tex brand, so perhaps one of those will be suitable.

The gap seems to be pretty small... not quite an interference fit, but close. ...although... that's going to depend on what sort of dimension the 3/16" screw ends up being. I'll be bringing my cheap digital calipers along, just to verify dimensions.

I wonder if I can set up some test pieces to evaluate potential adhesives?? It would just take some 4mm thick aluminum and some samples. Might be a good excuse to pick up some plain steel versions of the 3/16" screw.

I think we've discussed "plan B" before... I recall seeing your modified aluminum nut before.
My plan B is to use the track version that Hi-E sold. It's just the regular skewer, but the nut has flats instead of the stainless pin...



I already carry a little 4" adjustable wrench for the various 8 or 10mm nuts on my vintage bikes and that'll work for this.

Steve in Peoria
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Old 08-13-23, 06:45 PM
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Originally Posted by bulgie
I got one (swap meet maybe?) with the pin missing, and also no cone for the other end. I drilled the piece where the pin fell out, a through-hole big enough to slide a 5 mm allen wrench in as a lever. Not great for mid-race wheel changes of course, ya gott get your 5 allen out of your bag. But I always carry one anyway, so this isn't extra weight to be counted against the skewer, weight-weenie-wise.




For the replacement female-threaded cone, I McGuyvered this:



Quiz, anyone know what part this was?

Mark B
Looks like a Valentino shift lever adjuster with the knurled edge ground off.
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Old 08-13-23, 08:59 PM
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Originally Posted by Trakhak
Looks like a Valentino shift lever adjuster with the knurled edge ground off.
Ding ding ding, winner winner chicken dinner.

Well, machined off, on a lathe, but the judges say we'll take it!
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Old 08-14-23, 02:20 AM
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Originally Posted by Trakhak
Looks like a Valentino shift lever adjuster with the knurled edge ground off.
Not Valentino (either version), is (was) Gran Sport.
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Old 08-14-23, 05:17 AM
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Originally Posted by oneclick
Not Valentino (either version), is (was) Gran Sport.
Oops looks like you're right, Valentino (part # 3400) was kinda similar but definitely different, this particular flying saucer was part # 3396, for Gran Sport shifters.

I shouldn't run a quiz when I don't know the right answer. Thanks for setting me straight.



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Old 08-14-23, 09:50 AM
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Originally Posted by bulgie
Thanks for setting me straight.
Was easy for me,
I have both kinds and they are my favourite Campag control; in particular because - like Simplex - you can tweak the anti-rotation washer's tab so there really is no rotation.
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Old 04-18-24, 07:46 PM
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Repurposed hubs

Love these hubs. Retro fitted these to Vintage BmX spacing. I had a blast doing this
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Old 04-19-24, 10:59 AM
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Good Info

Very interesting product line
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Old 04-19-24, 11:00 AM
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Quality

I wished they would’ve stayed in business
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Old 04-19-24, 11:00 AM
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Engineering

Designs were way ahead of his time
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