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Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

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Old 08-27-17, 11:43 PM   #1
Hisamatsu
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QR clamp for handlebar stem

http://www.bikeforums.net/12435545-post54.html

Where can I get a Quick Release clamp like that? Is it just a seat post clamp fitted on the stem?
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Old 08-27-17, 11:50 PM   #2
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The QR is basically the same as used for seat collars, but the ears on most stems are too close to accommodate it. You might be able to do some adapting with spacers to bring the QR out far enough to clear he curve.

If a QR feature is important to you, go ahead and tinker, and you should be able to work something out.
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Old 08-27-17, 11:52 PM   #3
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The QR is basically the same as used for seat collars, but the ears on most stems are too close to accommodate it. You might be able to do some adapting with spacers to bring the QR out far enough to clear he curve.

If a QR feature is important to you, go ahead and tinker, and you should be able to work something out.
I was going to epoxy a short allen wrench into the bolt as a lever, but saw this QR which seems more elegant.
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Old 08-28-17, 05:40 AM   #4
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I have used one for years...just a standard seat post QR, which works very well with no slipping. Very popular with those whose bars won't permit proper folding with out a little bar rotation.
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Old 08-28-17, 08:12 AM   #5
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I have used one for years...just a standard seat post QR, which works very well with no slipping. Very popular with those whose bars won't permit proper folding with out a little bar rotation.
Interesting that I asked clevercycles, nycewheels and several other local brompton shops for quick release option for rotating handlebar; all said none exist.
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Old 08-28-17, 09:05 AM   #6
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they sell new stuff.

there are Over a hundred bike shops in PDX, others do more repairs..
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Old 08-28-17, 02:03 PM   #7
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they sell new stuff.

there are Over a hundred bike shops in PDX, others do more repairs..
I figured since clevercycles & nycewheels were the big online sellers of bromptons they would be the gurus and know it all.
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Old 08-28-17, 03:22 PM   #8
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Bike Fridays (bikefriday.com) also come with QRs for their stems, not to release the handlebars but to remove the stem from the frame, but it should also work for the handlebar clamp. So try a Bike Friday dealer?
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Old 08-28-17, 09:07 PM   #9
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what color you need ? lol
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Old 08-29-17, 08:54 AM   #10
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what color you need ? lol
ohh... http://www.thorusa.com/accessories/hbclamp.jpg you got many colors.

Handlebars, Extenders and Bar Ends


So these don't thread into the stem, i think brompton has english tread pitch, but rather held in place by the end tab/screws?
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Old 08-29-17, 09:00 AM   #11
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get one smaller like the 5mm seat post QR, or just ream the threads out ..

you need a separate nut on the QR skewer, not threading into the threads on the steeing mast.

or just bring a bloody wrench/multitool in your pocket , forget the QR...
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Old 08-29-17, 10:34 AM   #12
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Interesting that I asked clevercycles, nycewheels and several other local brompton shops for quick release option for rotating handlebar; all said none exist.
I don't think an official safety tested version exists for Bromptons. Clearly you can jury rig something yourself.
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Old 09-09-17, 05:31 PM   #13
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Bought a generic QR seatpost lever and it works perfectly.
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Old 09-10-17, 07:45 AM   #14
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I did not have a spacer of the correct length so I had to use several washers to make a seatpost quick release work on my adjustable stem on my Airnimal. I use it to fold down the handlebars when I fold the bike.
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Old 09-10-17, 08:27 AM   #15
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Quote:
Originally Posted by Hisamatsu View Post
Bought a generic QR seatpost lever and it works perfectly.
Curious what you need a QR for on a Brompton S bar? Brake lever or bar end reposition?
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