Locking freewheel?

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r3volved   100 kW

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Locking freewheel?

Post by r3volved » Oct 21 2013 6:40am

I'm not sure if it exists, but I'm looking for a freewheel that can also lock.
So it would freewheel in the same direction that it would pull (when locked).
Does such a thing exist?

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Miles   100 GW

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Re: Locking freewheel?

Post by Miles » Oct 21 2013 11:32am

There was this one. I'm afraid it's no longer available, though.



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Miles   100 GW

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Re: Locking freewheel?

Post by Miles » Oct 21 2013 11:42am


firesurfer   1 µW

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Re: Locking freewheel?

Post by firesurfer » Nov 14 2019 1:44am

Miles wrote:
Oct 21 2013 11:32am
There was this one. I'm afraid it's no longer available, though.
Does anyone know what this was called? I know there are other brands, but this one seems interesting.
Last edited by mark5 on Nov 14 2019 1:54am, edited 1 time in total.
Reason: Fix quote tag

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Miles   100 GW

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Re: Locking freewheel?

Post by Miles » Nov 14 2019 4:05am

It was called the 'Fix-Free' drive. You won't find anything about it online though... I still have the leaflet that came with mine.

Balmorhea   100 W

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Re: Locking freewheel?

Post by Balmorhea » Nov 14 2019 4:30am

r3volved wrote:
Oct 21 2013 6:40am
I'm not sure if it exists, but I'm looking for a freewheel that can also lock.
So it would freewheel in the same direction that it would pull (when locked).
Does such a thing exist?
It's not totally clear what you're asking for. You want a hub that freewheels in one direction, but can be configured to freewheel in both directions?

The late Val Kleitz of Seattle used to modify antique Bendix 2-speed hubs to function as shiftable fixed/free hubs. That's now a few degrees removed from practical.

SRAM made a fixed/free single speed hub a few years ago, but it required a dozen or so turns of a screw in the end of the axle to make the transition. They called it "Torpedo", which was doubly confusing, because Sachs (bought earlier by SRAM) had already made a one-speed coaster brake hub and a three-speed hub called Torpedo.

https://www.parktool.com/blog/calvins-c ... orpedo-hub

In case you're tempted to find a SRAM Torpedo fixed/free hub for yourself, be advised that they're unreliable crap (like most of what SRAM makes, but even worse).

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Miles   100 GW

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Re: Locking freewheel?

Post by Miles » Nov 14 2019 4:43am

Balmorhea wrote: The late Val Kleitz of Seattle used to modify antique Bendix 2-speed hubs to function as shiftable fixed/free hubs. That's now a few degrees removed from practical.
Interesting. BSA made a shiftable fixed/free 2 speed hub called the 'DP'. There were cables controls to both sides of the hub.

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