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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 06-17-09, 11:51 PM   #1
Austin Rice
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Gyro

Is it possible to put a gyro onto a fixie so that the bike will have a front brake and the ability to do barspins on? Thanks.

P.S. My head tube is 8.25" tall/long and 1" inside diameter. Takes a threaded fork. Thanks!
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Old 06-18-09, 01:29 AM   #2
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No, that's not how a gyro works. A gyro is designed for the rear wheel and with some sort of on-frame support for the cable housing.

Since you're using a threaded headset, and not a threadless bmx headset, you won't be able to have a front brake and do barspins. The topcap on a BMX headset is oversized and the bolt for that headset has a hole in the center through which you send your brake cable.

Also, good luck finding a straight-legged, threaded 1" fork with brake posts. And a fork with brakes (whether center-pull, or linear-pull, or even U-brake) won't be able to do barspins on a track, touring or road geometry bike.

in short... no.
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Old 06-18-09, 05:53 AM   #3
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i have seen a front brake cable routed though the steerertube. then you can spin to win!
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Old 06-18-09, 09:29 AM   #4
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i have seen a front brake cable routed though the steerertube. then you can spin to win!
does anyone have pictures?
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Old 06-18-09, 09:35 AM   #5
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I thought this was about greek food!
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Old 06-18-09, 09:49 AM   #6
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same here
it's almost lunch time so i immediately thought food
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Old 06-18-09, 09:57 AM   #7
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i prefer its middle eastern cousin.
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Old 06-18-09, 09:59 AM   #8
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i could go for some falafel right about now
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Old 06-18-09, 10:00 AM   #9
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^agreed
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Old 06-18-09, 10:00 AM   #10
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Quote:
Originally Posted by Severian View Post
Since you're using a threaded headset, and not a threadless bmx headset, you won't be able to have a front brake and do barspins. The topcap on a BMX headset is oversized and the bolt for that headset has a hole in the center through which you send your brake cable.

Also, good luck finding a straight-legged, threaded 1" fork with brake posts. And a fork with brakes (whether center-pull, or linear-pull, or even U-brake) won't be able to do barspins on a track, touring or road geometry bike.

in short... no.
I'll agree about the fork, but not the cable routing. Back in the mid 80s there were no threadless headsets, and that's when the Potts mod came about.
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Old 06-18-09, 10:12 AM   #11
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not mine

Last edited by The27jeenyus; 06-18-09 at 11:10 AM.
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Old 06-18-09, 11:39 AM   #12
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If you've got a threadless headset drilling a hole in the top cap and routing the cable through there also works. Pretty similar to the pics above, but with no special hardware required.
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Old 06-18-09, 12:01 PM   #13
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Probably also a 1 1/8 headset too. Wasn't the Milwaukee Cycles trick by also being sold with the option of a headset like the one pictured above?
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Old 06-18-09, 12:24 PM   #14
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You need the potts mod topcap, bolt and starnut for 1 1/8" period. You need an 80's ish BMX stem or potts mod bolt/wedge (unless your wedge is the same angle and thread) for 1" period. Any other advice is horse puckey. Any of which should be available through Ebay or Danscomp.com or albes.com.

A gyro CAN be used for rear brakes with minor modification.

To use either potts mod setup you will need to invert the cable attatchment points on the arms of your brake.

A 650c wheel may be needed to clear the frame...it will take some trial and error work but it isn't hard.
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