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Wheels Manufacturing "Growler" locknut

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Wheels Manufacturing "Growler" locknut

Old 01-14-19, 04:50 PM
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jonwvara 
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Wheels Manufacturing "Growler" locknut

Wheels Manufacturing used to make a headset locknut for threaded headsets it called the "Growler." There are still some floating around, although I have never seen one. I know that you installed them like a regular locknut, then secured them further by tightening an allen bolt. My guess is that the nut was split and that the allen bolt pinched the split together to produce some clamping force against the steerer. But that's just a guess--maybe the tightening method operated some other way.

Has anyone used one of these, and do they work? The product directions that I have seen appear to say that the locknut should be tightened with a headset wrench in the usual way before the pinch bolt (or whatever the allen bolt does) is secured. I'm wondering, though, if it would be feasible to screw down the locknut hand-tight, then secure it with the allen bolt. I'm trying to figure out a way to avoid carrying a headset wrench on an upcoming tour--although I will need to remove the fork and stem transport the bike to and from the tour--and this seemed like an easy way out.

I know, there are options for lightweight headset wrenches, but I'd rather not have to bring one at all.
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Old 01-14-19, 04:56 PM
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I had one and they work very well. Also had a 'Gorilla' lock retainer nut for headset on a MTB. Not elegant in appearance but work brilliantly.

Also have a svelte Delta lock nut for road bike. Excellent design.
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Old 01-14-19, 07:34 PM
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These guys have a similar item. I have used one for several years and it seems to be doing fine.

Mountain Tamer Chainring Adapters, Gorilla Brake Beefers, Gorilla Headlocks and more
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Old 01-14-19, 08:05 PM
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1 1/8" threaded on fleaBay: https://www.ebay.com/itm/Growler-Hea...JDYg:rk:1:pf:0

You might be able to turn it fairly tight by using the allen key as a handle to turn it, before tightening down the cinch bolt.

From: BikePro.com / Buyer's Guide / Headset Accessories - Bicycle Parts at discount prices / the Buyer's Guide / Bicycle Parts at their finest! / Professional Bicycle Source / Bike Pro

WHEELS MANUFACTURING GROWLER HEADLOCK

The Growler is machined from 6061-T6 aluminum alloy to replace the non- cinching headset lock nuts provided by the headset makers. The piece is turned on a lathe with a channel milled around the inner surface for an O- ring used as a stem seal. Two parallel cuts create the grip surfaces for the headset wrench. With the threads tapped for the steerer, a hole is drilled horizontally at the base of the headlock nut for the cinch bolt, recessing the head. The cinch hole has threads tapped for the bolt and then cut through to make the cinch mechanism. The bolt has a 3mm hex head fitting. The Growler headlock comes in 1", and 1 1/8" in Silver or Black while the 1 1/4" size comes in Black only. The 1" size weighs 21.5 grams.
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Old 01-14-19, 08:14 PM
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Originally Posted by Vintage_Cyclist View Post
1 1/8" threaded on fleaBay: https://www.ebay.com/itm/Growler-Hea...JDYg:rk:1:pf:0

You might be able to turn it fairly tight by using the allen key as a handle to turn it, before tightening down the cinch bolt.
Yes, that had occurred to me also. I imagine you'd have to remove the cinch bolt first and use a pretty small wrench as a lever (maybe 2 1/2mm?), and also be careful so as not to ding up the female cinch-bolt threads in the locknut itself.
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Old 01-14-19, 08:17 PM
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Or maybe use a long bolt that fits the threading and use it as the lever.
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Old 01-14-19, 08:34 PM
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Originally Posted by Vintage_Cyclist View Post
Or maybe use a long bolt that fits the threading and use it as the lever.
Yes, good idea--I had just thought of that and was coming back to add to my last post, only to find that you're quicker on the uptake than I am.
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Old 01-14-19, 09:13 PM
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Originally Posted by jonwvara View Post
Yes, good idea--I had just thought of that and was coming back to add to my last post, only to find that you're quicker on the uptake than I am.
Once and awhile my synapses fire as designed. Here's another crackpot idea, if you're going with making one of these. If you were to tap two holes, opposite each other and perpendicular to the body of the locknut, you could temporarily insert bolts and use them as handles. Sort of like this, without extending into the center of the locknut.

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Old 01-14-19, 11:37 PM
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I would imagine that once the nut were hand-tightened enough to just spread it slightly at the split, that tightening the little screw would then tension the steerer between the nut and the headset cup, thus effecting a "torqued" (tensioned) nut against the headset.

Only time will tell if the headset tightened this way will stay adjusted properly in hard use over time. It would be possible for the headset to adjust itself tighter if the nut isn't tight enough against the top cup, something I've seen happen in real life.
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