[chucko58]

Before anyone gets the wrong idea, I already have a new Hope hub to replace this Chinese piece of... poorly prepared but good looking aluminum. Lesson learned, but fortunately not too costly.

The first time I installed a rotor on this Goldix hub, 2 of the 6 bolt holes stripped. And I had barely put any torque on them! I tried to clean up one of them with the appropriately sized tap. I knew it was a long shot, but nope. The vendor (the GOLDIX Store on AX) said "it was you who screwed the threads, my friend." Thanks a lot.

Is there any way I can put some threads in this thing, say with a Heli-Coil or similar? There's not a whole lot of material there - see the pic. The buggered holes are at 5:30 and 10 o'clock in the pic. Or is it destined to be a paperweight?

 

[TraxFactory]

Is there enough room to drill thru and put a nut on the other end?

 

[chucko58]

No. There might be 7mm or so between the back of the rotor flange and the spoke flange.

Looks like the material around the holes is maybe 1.5mm at the thinnest point. I'm not optimistic about getting a threaded insert in there.

 

[fredcook]

Long shot, but if you want to experiment... JB Weld studs into the holes and use low profile nuts to attach the rotor.

 

[Cleared2land]

I think that there is enough material there for a HeliCoil. You have nothing to lose but the the HeliCoil expense.

 

[dompedro3]

get a thin nut. 7mm is more than enough. Get some slightly longer bolts, glue the thin nut to the backside.

 

[202cycle]

I think that there is enough material there for a HeliCoil. You have nothing to lose but the the HeliCoil expense.

You have to drill out bigger holes for a helicoil. There won't be enough material left, especially for a brake rotor.

 

[WHALENARD]

If you're riding at intermediate speeds or areas with precipitous drop-offs I'd get rid of that thing. Not worth it.

Sent from my Pixel 4a (5G) using Tapatalk

 

[Sparticus]

WHALENARD is talking sense here.
Life is short and precious — waste neither time or life itself.
=sParty

 

[tstinchy]

a helicoil should work

 

[milehi]

I remember when pro DH riders were running only three bolts.

 

[dompedro3]

get a thin nut. 7mm is more than enough. Get some slightly longer bolts, glue the thin nut to the backside.

Here’s some additional resources:
Measure existing bolt, will probably be around 10mm, get a longer one. Disc brakes take m5 (I believe) bolts, get some stainless ones, torx so they don’t strip out.
Then get a 5mm nut, something like this:

Metric hex jam nuts, Stainless steel 316 (A-4), 5mm x 0.8mm - Bolt Depot

www.boltdepot.com

It’s less than 3mm thick, put disc bolt through as usual, but this time pick up nut on rear, torque as usual. Glue nut in place for ease of install.

 

[127.0.0.1]

just don't use it, not worth something going wrong. it can be tapped and coiled but you lose integrity since the ears are tiny to begin with.

back... who cares...
front ? facial fractures suck

 

[202cycle]

a helicoil should work

If you drill out those holes and tap them for a larger bolt (via helicoil) there will only be about a mm or 2 of material left. Hell no.

 

[john1970]

I would throw it out. No point trying to salvage something that is linked to your brakes. Why I went with CL rotors on my MTB wheelset.

 

[Pisgah]

I agree with the sage advice of many others in this thread that recommend the OP absolutely not try and fix the hub. Don’t compound a mistake with another.

 

[noapathy]

If the material is that soft to begin with, I'm not going to trust it with my safety. Removing some of said soft material to use a helicoil - really, no effing way. Time to cut your losses.

 

[eri]

Helicoils are really strong, stronger than existing metal. You can make it work if you want. Ride that damn wheel into the ground, show it who is boss.

seems like something might be amiss with the aluminum though, shouldnt be so soft. Good aluminum is really hard and tough, not peanut butter. Maybe get a hardness test done and see if it matches manufacturer’s specs.

 

[127.0.0.1]

Helicoils are really strong, stronger than existing metal. You can make it work if you want. Ride that damn wheel into the ground, show it who is boss.

<...snip...>

yeah.....no to that....

 

[.WestCoastHucker.]

shaving accidents don't count...