[big-ted]

So apparently the shaft end of a Double Barrel shock uses a DU bush larger than the 1/2" usually used by Fox etc. Anyone any idea what size it is? Is it possible that this size of DU bush is common in other applications? Do motor bikes/ATVs use DU bushes in shocks that might be this size?

And no, my particular DB doesn't have the spherical bearing setup.

Edit: And yes, Malcom at Cane Creek is one of the most helpful people in cycling, but I doubt he'll get to his email before Monday, hence my asking here.

 

[Kanye West]

The ID should be 1/2" and be compatible with other standard hardware, but I think the DU bushing OD's were larger than a Fox/Marz/Progressive DU.

 

[big-ted]

The ID should be 1/2" and be compatible with other standard hardware, but I think the DU bushing OD's were larger than a Fox/Marz/Progressive DU.

Correct. I need to know how to spec one of these bad boys so that I might go hunting for one tomorrow. I'm used to spec'ing DU bushes by the ID, which as you say seems to be standard.

 

[motomike]

Correct. I need to know how to spec one of these bad boys so that I might go hunting for one tomorrow. I'm used to spec'ing DU bushes by the ID, which as you say seems to be standard.

I ran into that issue a little while ago. They started using Norglide DU bushings, which as you have found out, are larger. Not sure on the exact OD of it since I don't have any sitting around that aren't in a shock.

 

[Udi]

DU Bushing OD is 15.9mm
DU Bushing ID is 12.7mm

The regular DU bushings actually last longer in my experience, whereas the norglide ones (while having a little less stiction) are a little fast to wear out, especially on higher-rotation shock pivots.

Also for interest's sake, the norglide bushings are actually a smaller OD bushing that is fitted into a 15.9mm OD sleeve, which is then pressed into the shock eye. And before you ask, no the ID of this sleeve is not the same size as the OD of a standard fox DU bushing.

Hope that information is useful to you.

 

[epic]

I've been getting better wear from the Norglides. As for diameter, doesn't the diameter change with the year of the shock? I though the earlier shocks had smaller ones.

 

[Udi]

I burnt through mine quick smart after not very long riding in the alps. Like I said, it depends on the amount of rotation in the shock pivots, but my experience was that they had slightly less stiction (not as tight a fit) but wore fairly quickly. YMMV I guess.

Also, I assumed big-ted was referring to the newer DB's, but I *think* the early generation ones (pre gold body perhaps) may have used the standard fox-size DU bushings. Open to correction there though as I haven't owned one. I do know there are only two different sizes though, and it has been the 15.9mm (figure malcolm gave me) for a while now.

 

[big-ted]

Yeah, couldn't comment on the older DBs as my previous one had the spherical bearings.

Re: wear, I got an entire season (~20 Whistler days, lots of muddy shore rides etc) out of this one, which seems reasonable, but holy cow did it do a number on the aluminium hardware. Time to put in a steel pin methinks!

Thanks for the info Udi.

 

[Sandwich]

Looking at a shock with spherical bearings. Can anyone point me towards which bushings I would need to replace, and where I can get them? Bike runs 52 and 34mm.